./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.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_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/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_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/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_90a2686c-1388-440a-a09d-fa2ff8c1e149/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 1d2525c514f5f41938cb8dbff9fda78c478979aa19fdef1a39087aafe1b8a708 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:54:18,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:54:18,705 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:54:18,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:54:18,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:54:18,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:54:18,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:54:18,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:54:18,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:54:18,752 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:54:18,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:54:18,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:54:18,752 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:54:18,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:54:18,752 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:54:18,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:54:18,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:54:18,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:54:18,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:54:18,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:54:18,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:54:18,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:54:18,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:54:18,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:54:18,754 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:54:18,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:54:18,754 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:54:18,754 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:54:18,754 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:54:18,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:54:18,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:54:18,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:54:18,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:54:18,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:54:18,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:54:18,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:54:18,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:54:18,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:54:18,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:54:18,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:54:18,758 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:54:18,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:54:18,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:54:18,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:54:18,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:54:18,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:54:18,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:54:18,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:54:18,760 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_90a2686c-1388-440a-a09d-fa2ff8c1e149/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 -> 1d2525c514f5f41938cb8dbff9fda78c478979aa19fdef1a39087aafe1b8a708 [2024-11-24 01:54:19,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:54:19,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:54:19,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:54:19,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:54:19,099 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:54:19,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i [2024-11-24 01:54:22,306 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/data/235358ec7/0a8daeadb1c9458ba3f250f3997ac6b2/FLAG6982337a4 [2024-11-24 01:54:22,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:54:22,629 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i [2024-11-24 01:54:22,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/data/235358ec7/0a8daeadb1c9458ba3f250f3997ac6b2/FLAG6982337a4 [2024-11-24 01:54:22,675 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/data/235358ec7/0a8daeadb1c9458ba3f250f3997ac6b2 [2024-11-24 01:54:22,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:54:22,681 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:54:22,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:54:22,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:54:22,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:54:22,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:54:22" (1/1) ... [2024-11-24 01:54:22,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ad7792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:22, skipping insertion in model container [2024-11-24 01:54:22,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:54:22" (1/1) ... [2024-11-24 01:54:22,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:54:22,944 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_90a2686c-1388-440a-a09d-fa2ff8c1e149/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i[919,932] [2024-11-24 01:54:23,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:54:23,056 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:54:23,072 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_90a2686c-1388-440a-a09d-fa2ff8c1e149/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i[919,932] [2024-11-24 01:54:23,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:54:23,149 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:54:23,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23 WrapperNode [2024-11-24 01:54:23,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:54:23,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:54:23,151 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:54:23,151 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:54:23,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,230 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 317 [2024-11-24 01:54:23,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:54:23,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:54:23,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:54:23,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:54:23,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,298 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]. [2024-11-24 01:54:23,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,313 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:54:23,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:54:23,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:54:23,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:54:23,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (1/1) ... [2024-11-24 01:54:23,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:54:23,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:23,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:54:23,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:54:23,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:54:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:54:23,434 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:54:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:54:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:54:23,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:54:23,575 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:54:23,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:54:24,396 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-24 01:54:24,396 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:54:24,417 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:54:24,420 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:54:24,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:54:24 BoogieIcfgContainer [2024-11-24 01:54:24,420 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:54:24,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:54:24,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:54:24,431 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:54:24,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:54:22" (1/3) ... [2024-11-24 01:54:24,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1937e555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:54:24, skipping insertion in model container [2024-11-24 01:54:24,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:54:23" (2/3) ... [2024-11-24 01:54:24,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1937e555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:54:24, skipping insertion in model container [2024-11-24 01:54:24,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:54:24" (3/3) ... [2024-11-24 01:54:24,436 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i [2024-11-24 01:54:24,456 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:54:24,458 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i that has 2 procedures, 137 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:54:24,527 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:54:24,544 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;@79ee4915, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:54:24,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:54:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 92 states have (on average 1.434782608695652) internal successors, (132), 93 states have internal predecessors, (132), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-24 01:54:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-24 01:54:24,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:24,574 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:24,575 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:24,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 591584545, now seen corresponding path program 1 times [2024-11-24 01:54:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:24,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292507558] [2024-11-24 01:54:24,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:24,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-11-24 01:54:25,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:25,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292507558] [2024-11-24 01:54:25,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292507558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:25,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007679074] [2024-11-24 01:54:25,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:25,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:25,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:25,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:54:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:25,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:54:25,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:54:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-11-24 01:54:25,746 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:54:25,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007679074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:54:25,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:54:25,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:54:25,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385483967] [2024-11-24 01:54:25,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:54:25,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:54:25,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:25,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:54:25,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:54:25,794 INFO L87 Difference]: Start difference. First operand has 137 states, 92 states have (on average 1.434782608695652) internal successors, (132), 93 states have internal predecessors, (132), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 01:54:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:25,843 INFO L93 Difference]: Finished difference Result 267 states and 468 transitions. [2024-11-24 01:54:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:54:25,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 261 [2024-11-24 01:54:25,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:25,856 INFO L225 Difference]: With dead ends: 267 [2024-11-24 01:54:25,856 INFO L226 Difference]: Without dead ends: 133 [2024-11-24 01:54:25,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:54:25,869 INFO L435 NwaCegarLoop]: 209 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, 209 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 [2024-11-24 01:54:25,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:54:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-24 01:54:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-24 01:54:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 89 states have (on average 1.404494382022472) internal successors, (125), 89 states have internal predecessors, (125), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-24 01:54:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 209 transitions. [2024-11-24 01:54:25,930 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 209 transitions. Word has length 261 [2024-11-24 01:54:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:25,931 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 209 transitions. [2024-11-24 01:54:25,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 01:54:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 209 transitions. [2024-11-24 01:54:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-24 01:54:25,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:25,938 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:25,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:54:26,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a2686c-1388-440a-a09d-fa2ff8c1e149/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:26,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:26,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:26,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2117699433, now seen corresponding path program 1 times [2024-11-24 01:54:26,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:26,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456692099] [2024-11-24 01:54:26,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:26,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:54:27,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:27,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456692099] [2024-11-24 01:54:27,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456692099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:54:27,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:54:27,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:54:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428411755] [2024-11-24 01:54:27,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:54:27,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:54:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:27,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:54:27,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:54:27,450 INFO L87 Difference]: Start difference. First operand 133 states and 209 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:54:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:27,929 INFO L93 Difference]: Finished difference Result 394 states and 622 transitions. [2024-11-24 01:54:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:54:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 261 [2024-11-24 01:54:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:27,938 INFO L225 Difference]: With dead ends: 394 [2024-11-24 01:54:27,938 INFO L226 Difference]: Without dead ends: 264 [2024-11-24 01:54:27,943 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 [2024-11-24 01:54:27,944 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 131 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:27,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 598 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:54:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-24 01:54:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 205. [2024-11-24 01:54:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 118 states have (on average 1.305084745762712) internal successors, (154), 118 states have internal predecessors, (154), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-24 01:54:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 322 transitions. [2024-11-24 01:54:28,031 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 322 transitions. Word has length 261 [2024-11-24 01:54:28,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:28,032 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 322 transitions. [2024-11-24 01:54:28,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:54:28,032 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 322 transitions. [2024-11-24 01:54:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:54:28,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:28,044 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:28,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:54:28,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:28,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1662415630, now seen corresponding path program 1 times [2024-11-24 01:54:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:28,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691046507] [2024-11-24 01:54:28,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:28,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:55:52,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:52,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691046507] [2024-11-24 01:55:52,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691046507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:52,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:55:52,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:55:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258455926] [2024-11-24 01:55:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:52,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:55:52,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:52,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:55:52,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:55:52,881 INFO L87 Difference]: Start difference. First operand 205 states and 322 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:55:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:58,693 INFO L93 Difference]: Finished difference Result 642 states and 988 transitions. [2024-11-24 01:55:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:55:58,695 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2024-11-24 01:55:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:58,703 INFO L225 Difference]: With dead ends: 642 [2024-11-24 01:55:58,704 INFO L226 Difference]: Without dead ends: 512 [2024-11-24 01:55:58,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-24 01:55:58,709 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 838 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:58,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1401 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 01:55:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-24 01:55:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 363. [2024-11-24 01:55:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 232 states have (on average 1.3448275862068966) internal successors, (312), 233 states have internal predecessors, (312), 126 states have call successors, (126), 4 states have call predecessors, (126), 4 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-24 01:55:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 564 transitions. [2024-11-24 01:55:58,818 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 564 transitions. Word has length 262 [2024-11-24 01:55:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:58,823 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 564 transitions. [2024-11-24 01:55:58,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:55:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 564 transitions. [2024-11-24 01:55:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:55:58,831 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:58,832 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:58,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:55:58,832 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:58,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:58,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1484426226, now seen corresponding path program 1 times [2024-11-24 01:55:58,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:58,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445445872] [2024-11-24 01:55:58,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:56:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445445872] [2024-11-24 01:56:12,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445445872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:12,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:56:12,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:56:12,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33779843] [2024-11-24 01:56:12,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:12,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:56:12,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:12,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:56:12,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:56:12,534 INFO L87 Difference]: Start difference. First operand 363 states and 564 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:56:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:15,913 INFO L93 Difference]: Finished difference Result 788 states and 1190 transitions. [2024-11-24 01:56:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:56:15,914 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2024-11-24 01:56:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:15,920 INFO L225 Difference]: With dead ends: 788 [2024-11-24 01:56:15,920 INFO L226 Difference]: Without dead ends: 658 [2024-11-24 01:56:15,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:56:15,922 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 1042 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:15,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1143 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:56:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-24 01:56:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 385. [2024-11-24 01:56:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 254 states have (on average 1.3700787401574803) internal successors, (348), 254 states have internal predecessors, (348), 126 states have call successors, (126), 4 states have call predecessors, (126), 4 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-24 01:56:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 600 transitions. [2024-11-24 01:56:15,996 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 600 transitions. Word has length 262 [2024-11-24 01:56:15,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:15,997 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 600 transitions. [2024-11-24 01:56:15,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:56:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 600 transitions. [2024-11-24 01:56:16,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:56:16,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:16,002 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:16,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:56:16,003 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:16,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash -804367856, now seen corresponding path program 1 times [2024-11-24 01:56:16,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:16,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004953931] [2024-11-24 01:56:16,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:16,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:57:42,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:42,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004953931] [2024-11-24 01:57:42,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004953931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:42,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:42,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:57:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546223304] [2024-11-24 01:57:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:42,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:57:42,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:42,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:57:42,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:57:42,908 INFO L87 Difference]: Start difference. First operand 385 states and 600 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:57:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:47,306 INFO L93 Difference]: Finished difference Result 650 states and 997 transitions. [2024-11-24 01:57:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:57:47,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2024-11-24 01:57:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:47,314 INFO L225 Difference]: With dead ends: 650 [2024-11-24 01:57:47,314 INFO L226 Difference]: Without dead ends: 520 [2024-11-24 01:57:47,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:57:47,319 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 897 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:47,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1169 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 01:57:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-24 01:57:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 389. [2024-11-24 01:57:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 258 states have (on average 1.372093023255814) internal successors, (354), 258 states have internal predecessors, (354), 126 states have call successors, (126), 4 states have call predecessors, (126), 4 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-24 01:57:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 606 transitions. [2024-11-24 01:57:47,375 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 606 transitions. Word has length 262 [2024-11-24 01:57:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:47,376 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 606 transitions. [2024-11-24 01:57:47,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:57:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 606 transitions. [2024-11-24 01:57:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:57:47,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:47,381 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:47,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:57:47,381 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:57:47,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1404250192, now seen corresponding path program 1 times [2024-11-24 01:57:47,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:47,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489483704] [2024-11-24 01:57:47,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:58:10,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:58:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489483704] [2024-11-24 01:58:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489483704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:10,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:58:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469264659] [2024-11-24 01:58:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:10,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:58:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:58:10,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:58:10,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:58:10,606 INFO L87 Difference]: Start difference. First operand 389 states and 606 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-24 01:58:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:16,239 INFO L93 Difference]: Finished difference Result 670 states and 1014 transitions. [2024-11-24 01:58:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:58:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 262 [2024-11-24 01:58:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:16,246 INFO L225 Difference]: With dead ends: 670 [2024-11-24 01:58:16,247 INFO L226 Difference]: Without dead ends: 540 [2024-11-24 01:58:16,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2024-11-24 01:58:16,251 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 1115 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:16,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1512 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 01:58:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-11-24 01:58:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 408. [2024-11-24 01:58:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 273 states have (on average 1.358974358974359) internal successors, (371), 273 states have internal predecessors, (371), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-24 01:58:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 623 transitions. [2024-11-24 01:58:16,311 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 623 transitions. Word has length 262 [2024-11-24 01:58:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:16,312 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 623 transitions. [2024-11-24 01:58:16,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-24 01:58:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 623 transitions. [2024-11-24 01:58:16,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:58:16,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:16,322 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:16,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:58:16,322 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:58:16,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:16,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2136704398, now seen corresponding path program 1 times [2024-11-24 01:58:16,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:58:16,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151993567] [2024-11-24 01:58:16,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:16,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:58:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:58:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:58:30,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:58:30,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151993567] [2024-11-24 01:58:30,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151993567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:58:30,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:58:30,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:58:30,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596083997] [2024-11-24 01:58:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:58:30,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:58:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:58:30,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:58:30,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:58:30,692 INFO L87 Difference]: Start difference. First operand 408 states and 623 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 01:58:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:58:36,961 INFO L93 Difference]: Finished difference Result 889 states and 1332 transitions. [2024-11-24 01:58:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:58:36,962 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), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 262 [2024-11-24 01:58:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:58:36,970 INFO L225 Difference]: With dead ends: 889 [2024-11-24 01:58:36,970 INFO L226 Difference]: Without dead ends: 584 [2024-11-24 01:58:36,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:58:36,972 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 813 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:58:36,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1585 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 01:58:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-24 01:58:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 418. [2024-11-24 01:58:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 283 states have (on average 1.3604240282685511) internal successors, (385), 283 states have internal predecessors, (385), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-24 01:58:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 637 transitions. [2024-11-24 01:58:37,031 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 637 transitions. Word has length 262 [2024-11-24 01:58:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:58:37,032 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 637 transitions. [2024-11-24 01:58:37,033 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), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 01:58:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 637 transitions. [2024-11-24 01:58:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:58:37,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:58:37,036 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:58:37,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:58:37,036 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:58:37,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:58:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1010137458, now seen corresponding path program 1 times [2024-11-24 01:58:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:58:37,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562138834] [2024-11-24 01:58:37,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:58:37,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:58:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:59:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:59:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562138834] [2024-11-24 01:59:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562138834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:16,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:16,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:59:16,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693580382] [2024-11-24 01:59:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:16,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:59:16,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:59:16,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:59:16,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:59:16,872 INFO L87 Difference]: Start difference. First operand 418 states and 637 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:59:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:19,492 INFO L93 Difference]: Finished difference Result 854 states and 1289 transitions. [2024-11-24 01:59:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:59:19,494 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2024-11-24 01:59:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:19,498 INFO L225 Difference]: With dead ends: 854 [2024-11-24 01:59:19,499 INFO L226 Difference]: Without dead ends: 539 [2024-11-24 01:59:19,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:59:19,501 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 584 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:19,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1201 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 01:59:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-24 01:59:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 416. [2024-11-24 01:59:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 281 states have (on average 1.3558718861209964) internal successors, (381), 281 states have internal predecessors, (381), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-24 01:59:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 633 transitions. [2024-11-24 01:59:19,564 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 633 transitions. Word has length 262 [2024-11-24 01:59:19,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:19,566 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 633 transitions. [2024-11-24 01:59:19,566 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:59:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 633 transitions. [2024-11-24 01:59:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:59:19,570 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:19,570 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:19,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:59:19,571 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:19,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:19,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1878538960, now seen corresponding path program 1 times [2024-11-24 01:59:19,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339945915] [2024-11-24 01:59:19,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:19,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:59:31,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:59:31,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339945915] [2024-11-24 01:59:31,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339945915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:31,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:59:31,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620110592] [2024-11-24 01:59:31,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:31,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:59:31,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:59:31,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:59:31,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:59:31,235 INFO L87 Difference]: Start difference. First operand 416 states and 633 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 01:59:33,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:33,541 INFO L93 Difference]: Finished difference Result 843 states and 1271 transitions. [2024-11-24 01:59:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:59:33,542 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 262 [2024-11-24 01:59:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:33,546 INFO L225 Difference]: With dead ends: 843 [2024-11-24 01:59:33,547 INFO L226 Difference]: Without dead ends: 530 [2024-11-24 01:59:33,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:59:33,549 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 485 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:33,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1566 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:59:33,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-24 01:59:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 410. [2024-11-24 01:59:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 275 states have (on average 1.3563636363636364) internal successors, (373), 275 states have internal predecessors, (373), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-24 01:59:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 625 transitions. [2024-11-24 01:59:33,601 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 625 transitions. Word has length 262 [2024-11-24 01:59:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:33,602 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 625 transitions. [2024-11-24 01:59:33,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 01:59:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 625 transitions. [2024-11-24 01:59:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:59:33,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:33,605 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:33,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:59:33,605 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:33,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash -143022704, now seen corresponding path program 1 times [2024-11-24 01:59:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:33,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533638570] [2024-11-24 01:59:33,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:33,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:59:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 01:59:54,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:59:54,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533638570] [2024-11-24 01:59:54,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533638570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:59:54,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:59:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:59:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142088692] [2024-11-24 01:59:54,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:59:54,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:59:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:59:54,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:59:54,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:59:54,615 INFO L87 Difference]: Start difference. First operand 410 states and 625 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:59:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:58,705 INFO L93 Difference]: Finished difference Result 759 states and 1161 transitions. [2024-11-24 01:59:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:59:58,706 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2024-11-24 01:59:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:58,712 INFO L225 Difference]: With dead ends: 759 [2024-11-24 01:59:58,712 INFO L226 Difference]: Without dead ends: 629 [2024-11-24 01:59:58,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:59:58,719 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 492 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:58,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1265 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 01:59:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-24 01:59:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 533. [2024-11-24 01:59:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 354 states have (on average 1.347457627118644) internal successors, (477), 355 states have internal predecessors, (477), 168 states have call successors, (168), 10 states have call predecessors, (168), 10 states have return successors, (168), 167 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-24 01:59:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 813 transitions. [2024-11-24 01:59:58,814 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 813 transitions. Word has length 262 [2024-11-24 01:59:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:58,815 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 813 transitions. [2024-11-24 01:59:58,815 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 01:59:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 813 transitions. [2024-11-24 01:59:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 01:59:58,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:58,820 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:58,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:59:58,821 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:58,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash -401188142, now seen corresponding path program 1 times [2024-11-24 01:59:58,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903097183] [2024-11-24 01:59:58,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:59:58,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:00:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:00:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:00:47,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903097183] [2024-11-24 02:00:47,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903097183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:00:47,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:00:47,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 02:00:47,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530324429] [2024-11-24 02:00:47,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:00:47,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 02:00:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:00:47,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 02:00:47,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-24 02:00:47,106 INFO L87 Difference]: Start difference. First operand 533 states and 813 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:00:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:00:51,135 INFO L93 Difference]: Finished difference Result 1078 states and 1628 transitions. [2024-11-24 02:00:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 02:00:51,136 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 262 [2024-11-24 02:00:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:00:51,147 INFO L225 Difference]: With dead ends: 1078 [2024-11-24 02:00:51,147 INFO L226 Difference]: Without dead ends: 948 [2024-11-24 02:00:51,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2024-11-24 02:00:51,151 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 586 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:00:51,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1808 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 02:00:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2024-11-24 02:00:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 694. [2024-11-24 02:00:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 469 states have (on average 1.35181236673774) internal successors, (634), 469 states have internal predecessors, (634), 210 states have call successors, (210), 14 states have call predecessors, (210), 14 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-24 02:00:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1054 transitions. [2024-11-24 02:00:51,259 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1054 transitions. Word has length 262 [2024-11-24 02:00:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:00:51,261 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 1054 transitions. [2024-11-24 02:00:51,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:00:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1054 transitions. [2024-11-24 02:00:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 02:00:51,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:00:51,264 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:00:51,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 02:00:51,264 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:00:51,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:00:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 331266064, now seen corresponding path program 1 times [2024-11-24 02:00:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:00:51,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597865661] [2024-11-24 02:00:51,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:00:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:00:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:00:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:00:54,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:00:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597865661] [2024-11-24 02:00:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597865661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:00:54,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:00:54,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 02:00:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919829011] [2024-11-24 02:00:54,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:00:54,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 02:00:54,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:00:54,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 02:00:54,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:00:54,391 INFO L87 Difference]: Start difference. First operand 694 states and 1054 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:00:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:00:58,540 INFO L93 Difference]: Finished difference Result 1367 states and 2059 transitions. [2024-11-24 02:00:58,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 02:00:58,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2024-11-24 02:00:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:00:58,548 INFO L225 Difference]: With dead ends: 1367 [2024-11-24 02:00:58,548 INFO L226 Difference]: Without dead ends: 922 [2024-11-24 02:00:58,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2024-11-24 02:00:58,551 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 624 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:00:58,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 2534 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 02:00:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-24 02:00:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 702. [2024-11-24 02:00:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 477 states have (on average 1.350104821802935) internal successors, (644), 477 states have internal predecessors, (644), 210 states have call successors, (210), 14 states have call predecessors, (210), 14 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-24 02:00:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1064 transitions. [2024-11-24 02:00:58,643 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1064 transitions. Word has length 262 [2024-11-24 02:00:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:00:58,644 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 1064 transitions. [2024-11-24 02:00:58,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:00:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1064 transitions. [2024-11-24 02:00:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-24 02:00:58,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:00:58,647 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:00:58,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 02:00:58,647 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:00:58,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:00:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash 73100626, now seen corresponding path program 1 times [2024-11-24 02:00:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:00:58,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390008821] [2024-11-24 02:00:58,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:00:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:00:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:01:19,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:01:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390008821] [2024-11-24 02:01:19,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390008821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:01:19,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:01:19,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 02:01:19,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047997770] [2024-11-24 02:01:19,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:01:19,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 02:01:19,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:01:19,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 02:01:19,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:01:19,995 INFO L87 Difference]: Start difference. First operand 702 states and 1064 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:01:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:01:23,358 INFO L93 Difference]: Finished difference Result 1405 states and 2121 transitions. [2024-11-24 02:01:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 02:01:23,358 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 262 [2024-11-24 02:01:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:01:23,365 INFO L225 Difference]: With dead ends: 1405 [2024-11-24 02:01:23,365 INFO L226 Difference]: Without dead ends: 952 [2024-11-24 02:01:23,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-11-24 02:01:23,369 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 490 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:01:23,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1748 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 02:01:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2024-11-24 02:01:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 696. [2024-11-24 02:01:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 471 states have (on average 1.3503184713375795) internal successors, (636), 471 states have internal predecessors, (636), 210 states have call successors, (210), 14 states have call predecessors, (210), 14 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-24 02:01:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1056 transitions. [2024-11-24 02:01:23,454 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1056 transitions. Word has length 262 [2024-11-24 02:01:23,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:01:23,456 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 1056 transitions. [2024-11-24 02:01:23,456 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:01:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1056 transitions. [2024-11-24 02:01:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:01:23,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:01:23,459 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:01:23,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 02:01:23,460 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:01:23,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:01:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash 540208674, now seen corresponding path program 1 times [2024-11-24 02:01:23,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:01:23,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799158001] [2024-11-24 02:01:23,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:23,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:01:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:01:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:01:23,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:01:23,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799158001] [2024-11-24 02:01:23,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799158001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:01:23,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:01:23,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:01:23,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539270419] [2024-11-24 02:01:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:01:23,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:01:23,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:01:23,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:01:23,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:01:23,703 INFO L87 Difference]: Start difference. First operand 696 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:01:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:01:23,865 INFO L93 Difference]: Finished difference Result 1452 states and 2173 transitions. [2024-11-24 02:01:23,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:01:23,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-24 02:01:23,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:01:23,873 INFO L225 Difference]: With dead ends: 1452 [2024-11-24 02:01:23,873 INFO L226 Difference]: Without dead ends: 844 [2024-11-24 02:01:23,875 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 [2024-11-24 02:01:23,876 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 39 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:01:23,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 619 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:01:23,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-24 02:01:23,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 831. [2024-11-24 02:01:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 583 states have (on average 1.3224699828473414) internal successors, (771), 587 states have internal predecessors, (771), 226 states have call successors, (226), 21 states have call predecessors, (226), 21 states have return successors, (226), 222 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-24 02:01:23,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1223 transitions. [2024-11-24 02:01:23,987 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1223 transitions. Word has length 263 [2024-11-24 02:01:23,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:01:23,988 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 1223 transitions. [2024-11-24 02:01:23,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:01:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1223 transitions. [2024-11-24 02:01:23,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:01:23,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:01:23,992 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:01:23,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 02:01:23,993 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:01:23,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:01:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1127014688, now seen corresponding path program 1 times [2024-11-24 02:01:23,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:01:23,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561508461] [2024-11-24 02:01:23,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:01:23,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:01:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:02:22,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:22,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561508461] [2024-11-24 02:02:22,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561508461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:22,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:22,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 02:02:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697375074] [2024-11-24 02:02:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:22,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 02:02:22,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:22,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 02:02:22,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-24 02:02:22,442 INFO L87 Difference]: Start difference. First operand 831 states and 1223 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:02:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:26,835 INFO L93 Difference]: Finished difference Result 1370 states and 1999 transitions. [2024-11-24 02:02:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 02:02:26,836 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-24 02:02:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:26,845 INFO L225 Difference]: With dead ends: 1370 [2024-11-24 02:02:26,845 INFO L226 Difference]: Without dead ends: 1210 [2024-11-24 02:02:26,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-24 02:02:26,848 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 537 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:02:26,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1685 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 02:02:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-24 02:02:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 851. [2024-11-24 02:02:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 603 states have (on average 1.328358208955224) internal successors, (801), 607 states have internal predecessors, (801), 226 states have call successors, (226), 21 states have call predecessors, (226), 21 states have return successors, (226), 222 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-24 02:02:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1253 transitions. [2024-11-24 02:02:26,965 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1253 transitions. Word has length 263 [2024-11-24 02:02:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:26,966 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 1253 transitions. [2024-11-24 02:02:26,967 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:02:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1253 transitions. [2024-11-24 02:02:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:02:26,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:26,970 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:26,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 02:02:26,970 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:26,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1392945246, now seen corresponding path program 1 times [2024-11-24 02:02:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:26,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583172477] [2024-11-24 02:02:26,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:02:27,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:27,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583172477] [2024-11-24 02:02:27,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583172477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:27,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:27,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:02:27,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107048054] [2024-11-24 02:02:27,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:27,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:02:27,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:27,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:02:27,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:02:27,957 INFO L87 Difference]: Start difference. First operand 851 states and 1253 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:02:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:28,705 INFO L93 Difference]: Finished difference Result 1391 states and 2061 transitions. [2024-11-24 02:02:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 02:02:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-24 02:02:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:28,727 INFO L225 Difference]: With dead ends: 1391 [2024-11-24 02:02:28,727 INFO L226 Difference]: Without dead ends: 1231 [2024-11-24 02:02:28,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-24 02:02:28,731 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 439 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:02:28,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1072 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 02:02:28,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-24 02:02:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1021. [2024-11-24 02:02:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 766 states have (on average 1.3681462140992167) internal successors, (1048), 772 states have internal predecessors, (1048), 230 states have call successors, (230), 24 states have call predecessors, (230), 24 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:02:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1508 transitions. [2024-11-24 02:02:28,859 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1508 transitions. Word has length 263 [2024-11-24 02:02:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:28,860 INFO L471 AbstractCegarLoop]: Abstraction has 1021 states and 1508 transitions. [2024-11-24 02:02:28,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:02:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1508 transitions. [2024-11-24 02:02:28,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:02:28,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:28,864 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:28,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 02:02:28,865 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:28,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:28,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1349902688, now seen corresponding path program 1 times [2024-11-24 02:02:28,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:28,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703697053] [2024-11-24 02:02:28,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:28,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:02:42,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:42,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703697053] [2024-11-24 02:02:42,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703697053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:42,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 02:02:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290397324] [2024-11-24 02:02:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:42,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 02:02:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:42,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 02:02:42,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-24 02:02:42,063 INFO L87 Difference]: Start difference. First operand 1021 states and 1508 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:02:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:47,064 INFO L93 Difference]: Finished difference Result 2134 states and 3126 transitions. [2024-11-24 02:02:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 02:02:47,065 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-24 02:02:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:47,071 INFO L225 Difference]: With dead ends: 2134 [2024-11-24 02:02:47,072 INFO L226 Difference]: Without dead ends: 1403 [2024-11-24 02:02:47,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2024-11-24 02:02:47,075 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 569 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:02:47,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1782 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 02:02:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2024-11-24 02:02:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1024. [2024-11-24 02:02:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 769 states have (on average 1.3693107932379713) internal successors, (1053), 775 states have internal predecessors, (1053), 230 states have call successors, (230), 24 states have call predecessors, (230), 24 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:02:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1513 transitions. [2024-11-24 02:02:47,206 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1513 transitions. Word has length 263 [2024-11-24 02:02:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:47,206 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1513 transitions. [2024-11-24 02:02:47,207 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:02:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1513 transitions. [2024-11-24 02:02:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:02:47,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:47,209 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:47,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 02:02:47,210 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:47,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:47,210 INFO L85 PathProgramCache]: Analyzing trace with hash 425104674, now seen corresponding path program 1 times [2024-11-24 02:02:47,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:47,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352873548] [2024-11-24 02:02:47,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:47,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:02:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:47,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352873548] [2024-11-24 02:02:47,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352873548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:47,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:47,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:02:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026517127] [2024-11-24 02:02:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:47,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:02:47,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:47,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:02:47,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:02:47,595 INFO L87 Difference]: Start difference. First operand 1024 states and 1513 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:02:47,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:02:47,811 INFO L93 Difference]: Finished difference Result 1901 states and 2817 transitions. [2024-11-24 02:02:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:02:47,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-24 02:02:47,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:02:47,817 INFO L225 Difference]: With dead ends: 1901 [2024-11-24 02:02:47,817 INFO L226 Difference]: Without dead ends: 1167 [2024-11-24 02:02:47,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:02:47,820 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 156 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:02:47,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 664 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:02:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2024-11-24 02:02:47,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1024. [2024-11-24 02:02:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 769 states have (on average 1.3589076723016904) internal successors, (1045), 775 states have internal predecessors, (1045), 230 states have call successors, (230), 24 states have call predecessors, (230), 24 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:02:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1505 transitions. [2024-11-24 02:02:47,944 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1505 transitions. Word has length 263 [2024-11-24 02:02:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:02:47,945 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1505 transitions. [2024-11-24 02:02:47,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:02:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1505 transitions. [2024-11-24 02:02:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:02:47,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:02:47,947 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:47,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 02:02:47,948 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:02:47,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash -117752416, now seen corresponding path program 1 times [2024-11-24 02:02:47,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:47,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917385967] [2024-11-24 02:02:47,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:03:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:03:11,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:03:11,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917385967] [2024-11-24 02:03:11,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917385967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:03:11,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:03:11,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 02:03:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460529857] [2024-11-24 02:03:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:03:11,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 02:03:11,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:03:11,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 02:03:11,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-24 02:03:11,256 INFO L87 Difference]: Start difference. First operand 1024 states and 1505 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:03:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:03:14,760 INFO L93 Difference]: Finished difference Result 2072 states and 3031 transitions. [2024-11-24 02:03:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 02:03:14,761 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), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-24 02:03:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:03:14,769 INFO L225 Difference]: With dead ends: 2072 [2024-11-24 02:03:14,769 INFO L226 Difference]: Without dead ends: 1338 [2024-11-24 02:03:14,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2024-11-24 02:03:14,772 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 493 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:03:14,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1424 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 02:03:14,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2024-11-24 02:03:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1019. [2024-11-24 02:03:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 764 states have (on average 1.3586387434554974) internal successors, (1038), 770 states have internal predecessors, (1038), 230 states have call successors, (230), 24 states have call predecessors, (230), 24 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:03:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1498 transitions. [2024-11-24 02:03:14,907 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1498 transitions. Word has length 263 [2024-11-24 02:03:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:03:14,907 INFO L471 AbstractCegarLoop]: Abstraction has 1019 states and 1498 transitions. [2024-11-24 02:03:14,908 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), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:03:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1498 transitions. [2024-11-24 02:03:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:03:14,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:03:14,910 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:03:14,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 02:03:14,911 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:03:14,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:03:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash 993001182, now seen corresponding path program 1 times [2024-11-24 02:03:14,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:03:14,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941132996] [2024-11-24 02:03:14,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:03:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:05:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941132996] [2024-11-24 02:05:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941132996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:45,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:45,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-24 02:05:45,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826103576] [2024-11-24 02:05:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:45,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 02:05:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:45,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 02:05:45,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-11-24 02:05:45,292 INFO L87 Difference]: Start difference. First operand 1019 states and 1498 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-24 02:06:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:07,974 INFO L93 Difference]: Finished difference Result 1705 states and 2479 transitions. [2024-11-24 02:06:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 02:06:07,975 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 263 [2024-11-24 02:06:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:07,982 INFO L225 Difference]: With dead ends: 1705 [2024-11-24 02:06:07,982 INFO L226 Difference]: Without dead ends: 1455 [2024-11-24 02:06:07,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=292, Invalid=1190, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 02:06:07,984 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 959 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:07,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1772 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-24 02:06:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2024-11-24 02:06:08,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1040. [2024-11-24 02:06:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 785 states have (on average 1.3668789808917197) internal successors, (1073), 791 states have internal predecessors, (1073), 230 states have call successors, (230), 24 states have call predecessors, (230), 24 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:06:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1533 transitions. [2024-11-24 02:06:08,129 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1533 transitions. Word has length 263 [2024-11-24 02:06:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:08,130 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1533 transitions. [2024-11-24 02:06:08,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-24 02:06:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1533 transitions. [2024-11-24 02:06:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:06:08,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:08,133 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:08,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 02:06:08,133 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:08,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1526958752, now seen corresponding path program 1 times [2024-11-24 02:06:08,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:08,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182150790] [2024-11-24 02:06:08,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:08,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:06:09,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182150790] [2024-11-24 02:06:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182150790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:09,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 02:06:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737939470] [2024-11-24 02:06:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:09,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 02:06:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:09,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 02:06:09,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 02:06:09,863 INFO L87 Difference]: Start difference. First operand 1040 states and 1533 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:06:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:10,757 INFO L93 Difference]: Finished difference Result 1762 states and 2583 transitions. [2024-11-24 02:06:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 02:06:10,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-24 02:06:10,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:10,765 INFO L225 Difference]: With dead ends: 1762 [2024-11-24 02:06:10,765 INFO L226 Difference]: Without dead ends: 1512 [2024-11-24 02:06:10,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:06:10,769 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 257 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:10,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1273 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 02:06:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2024-11-24 02:06:10,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1121. [2024-11-24 02:06:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 866 states have (on average 1.384526558891455) internal successors, (1199), 872 states have internal predecessors, (1199), 230 states have call successors, (230), 24 states have call predecessors, (230), 24 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:06:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1659 transitions. [2024-11-24 02:06:10,904 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1659 transitions. Word has length 263 [2024-11-24 02:06:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:10,904 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1659 transitions. [2024-11-24 02:06:10,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-24 02:06:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1659 transitions. [2024-11-24 02:06:10,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:06:10,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:10,907 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:10,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 02:06:10,907 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:10,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:10,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2069815842, now seen corresponding path program 1 times [2024-11-24 02:06:10,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:10,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527415533] [2024-11-24 02:06:10,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:06:27,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527415533] [2024-11-24 02:06:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527415533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:27,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:27,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 02:06:27,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641172881] [2024-11-24 02:06:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:27,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 02:06:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:27,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 02:06:27,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-24 02:06:27,530 INFO L87 Difference]: Start difference. First operand 1121 states and 1659 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:06:32,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:32,135 INFO L93 Difference]: Finished difference Result 1857 states and 2709 transitions. [2024-11-24 02:06:32,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 02:06:32,136 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-24 02:06:32,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:32,145 INFO L225 Difference]: With dead ends: 1857 [2024-11-24 02:06:32,145 INFO L226 Difference]: Without dead ends: 1561 [2024-11-24 02:06:32,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2024-11-24 02:06:32,152 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 587 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:32,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1895 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-24 02:06:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2024-11-24 02:06:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1146. [2024-11-24 02:06:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 891 states have (on average 1.387205387205387) internal successors, (1236), 897 states have internal predecessors, (1236), 230 states have call successors, (230), 24 states have call predecessors, (230), 24 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:06:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1696 transitions. [2024-11-24 02:06:32,288 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1696 transitions. Word has length 263 [2024-11-24 02:06:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:32,289 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1696 transitions. [2024-11-24 02:06:32,289 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, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:06:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1696 transitions. [2024-11-24 02:06:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:06:32,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:32,292 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:32,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 02:06:32,292 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:32,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:32,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1832124444, now seen corresponding path program 1 times [2024-11-24 02:06:32,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:32,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457659561] [2024-11-24 02:06:32,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:32,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:06:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457659561] [2024-11-24 02:06:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457659561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:51,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:51,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 02:06:51,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825089319] [2024-11-24 02:06:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:51,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 02:06:51,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:51,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 02:06:51,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-24 02:06:51,475 INFO L87 Difference]: Start difference. First operand 1146 states and 1696 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:06:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:55,305 INFO L93 Difference]: Finished difference Result 1930 states and 2805 transitions. [2024-11-24 02:06:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 02:06:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-24 02:06:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:55,313 INFO L225 Difference]: With dead ends: 1930 [2024-11-24 02:06:55,313 INFO L226 Difference]: Without dead ends: 1634 [2024-11-24 02:06:55,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2024-11-24 02:06:55,315 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 884 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:55,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1467 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 02:06:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2024-11-24 02:06:55,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1153. [2024-11-24 02:06:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 897 states have (on average 1.386845039018952) internal successors, (1244), 903 states have internal predecessors, (1244), 230 states have call successors, (230), 25 states have call predecessors, (230), 25 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:06:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1704 transitions. [2024-11-24 02:06:55,410 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1704 transitions. Word has length 263 [2024-11-24 02:06:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:55,411 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1704 transitions. [2024-11-24 02:06:55,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:06:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1704 transitions. [2024-11-24 02:06:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:06:55,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:55,413 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:55,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 02:06:55,414 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:55,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:55,414 INFO L85 PathProgramCache]: Analyzing trace with hash -687835490, now seen corresponding path program 1 times [2024-11-24 02:06:55,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:55,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251797027] [2024-11-24 02:06:55,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:55,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:07:18,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:18,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251797027] [2024-11-24 02:07:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251797027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:18,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:18,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 02:07:18,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730560614] [2024-11-24 02:07:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:18,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 02:07:18,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:18,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 02:07:18,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:07:18,037 INFO L87 Difference]: Start difference. First operand 1153 states and 1704 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:07:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:20,626 INFO L93 Difference]: Finished difference Result 1944 states and 2821 transitions. [2024-11-24 02:07:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 02:07:20,626 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-24 02:07:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:20,632 INFO L225 Difference]: With dead ends: 1944 [2024-11-24 02:07:20,632 INFO L226 Difference]: Without dead ends: 1648 [2024-11-24 02:07:20,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2024-11-24 02:07:20,634 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 730 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:20,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1352 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 02:07:20,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2024-11-24 02:07:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1153. [2024-11-24 02:07:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 897 states have (on average 1.386845039018952) internal successors, (1244), 903 states have internal predecessors, (1244), 230 states have call successors, (230), 25 states have call predecessors, (230), 25 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:07:20,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1704 transitions. [2024-11-24 02:07:20,770 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1704 transitions. Word has length 263 [2024-11-24 02:07:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:20,770 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1704 transitions. [2024-11-24 02:07:20,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:07:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1704 transitions. [2024-11-24 02:07:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:07:20,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:20,773 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:20,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 02:07:20,774 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:20,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1483916194, now seen corresponding path program 1 times [2024-11-24 02:07:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236457604] [2024-11-24 02:07:20,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:07:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236457604] [2024-11-24 02:07:31,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236457604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:31,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:31,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 02:07:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770826715] [2024-11-24 02:07:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:31,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 02:07:31,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:31,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 02:07:31,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-24 02:07:31,481 INFO L87 Difference]: Start difference. First operand 1153 states and 1704 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:07:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:34,507 INFO L93 Difference]: Finished difference Result 2089 states and 3075 transitions. [2024-11-24 02:07:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 02:07:34,507 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-24 02:07:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:34,513 INFO L225 Difference]: With dead ends: 2089 [2024-11-24 02:07:34,513 INFO L226 Difference]: Without dead ends: 1288 [2024-11-24 02:07:34,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-24 02:07:34,516 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 529 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:34,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1588 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 02:07:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2024-11-24 02:07:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1159. [2024-11-24 02:07:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 902 states have (on average 1.3847006651884701) internal successors, (1249), 908 states have internal predecessors, (1249), 230 states have call successors, (230), 26 states have call predecessors, (230), 26 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:07:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1709 transitions. [2024-11-24 02:07:34,618 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1709 transitions. Word has length 263 [2024-11-24 02:07:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:34,618 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1709 transitions. [2024-11-24 02:07:34,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:07:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1709 transitions. [2024-11-24 02:07:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-24 02:07:34,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:34,621 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:34,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 02:07:34,621 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:34,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:34,622 INFO L85 PathProgramCache]: Analyzing trace with hash 291091168, now seen corresponding path program 1 times [2024-11-24 02:07:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:34,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931932568] [2024-11-24 02:07:34,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-24 02:07:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931932568] [2024-11-24 02:07:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931932568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:36,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:36,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 02:07:36,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579111254] [2024-11-24 02:07:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:36,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 02:07:36,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:36,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 02:07:36,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-24 02:07:36,762 INFO L87 Difference]: Start difference. First operand 1159 states and 1709 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:07:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:38,631 INFO L93 Difference]: Finished difference Result 2125 states and 3116 transitions. [2024-11-24 02:07:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 02:07:38,632 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), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-24 02:07:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:38,639 INFO L225 Difference]: With dead ends: 2125 [2024-11-24 02:07:38,639 INFO L226 Difference]: Without dead ends: 1318 [2024-11-24 02:07:38,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2024-11-24 02:07:38,642 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 490 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:38,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1281 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 02:07:38,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-11-24 02:07:38,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1157. [2024-11-24 02:07:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 900 states have (on average 1.3844444444444444) internal successors, (1246), 906 states have internal predecessors, (1246), 230 states have call successors, (230), 26 states have call predecessors, (230), 26 states have return successors, (230), 224 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-24 02:07:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1706 transitions. [2024-11-24 02:07:38,775 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1706 transitions. Word has length 263 [2024-11-24 02:07:38,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:38,776 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1706 transitions. [2024-11-24 02:07:38,776 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), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-24 02:07:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1706 transitions. [2024-11-24 02:07:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-24 02:07:38,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:38,779 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:38,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 02:07:38,779 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:38,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:38,780 INFO L85 PathProgramCache]: Analyzing trace with hash -700387993, now seen corresponding path program 1 times [2024-11-24 02:07:38,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:38,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503468810] [2024-11-24 02:07:38,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat