./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.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_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/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_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/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_fa0c9e9b-855c-45e7-9779-3244e053de92/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 d402cd14beee6851ca97c58b2a2589220820214ac9c394c1c5bdac6dbc1a1025 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:06:24,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:06:25,028 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:06:25,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:06:25,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:06:25,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:06:25,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:06:25,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:06:25,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:06:25,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:06:25,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:06:25,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:06:25,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:06:25,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:06:25,080 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:06:25,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:06:25,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:06:25,081 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:06:25,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:06:25,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:06:25,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:06:25,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:06:25,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:06:25,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:06:25,082 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:06:25,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:06:25,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:06:25,084 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:06:25,084 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:06:25,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:06:25,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:06:25,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:06:25,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:06:25,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:06:25,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:06:25,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:06:25,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:06:25,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:06:25,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:06:25,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:06:25,085 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:06:25,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:06:25,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:06:25,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:06:25,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:06:25,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:06:25,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:06:25,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:06:25,086 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_fa0c9e9b-855c-45e7-9779-3244e053de92/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 -> d402cd14beee6851ca97c58b2a2589220820214ac9c394c1c5bdac6dbc1a1025 [2024-11-23 23:06:25,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:06:25,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:06:25,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:06:25,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:06:25,430 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:06:25,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2024-11-23 23:06:28,311 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/data/21530ffcf/6755f05e77084691adee5c4f1ca286fd/FLAGda6318e3c [2024-11-23 23:06:28,640 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:06:28,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2024-11-23 23:06:28,668 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/data/21530ffcf/6755f05e77084691adee5c4f1ca286fd/FLAGda6318e3c [2024-11-23 23:06:28,688 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/data/21530ffcf/6755f05e77084691adee5c4f1ca286fd [2024-11-23 23:06:28,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:06:28,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:06:28,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:06:28,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:06:28,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:06:28,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:06:28" (1/1) ... [2024-11-23 23:06:28,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579f00e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:28, skipping insertion in model container [2024-11-23 23:06:28,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:06:28" (1/1) ... [2024-11-23 23:06:28,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:06:28,903 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_fa0c9e9b-855c-45e7-9779-3244e053de92/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i[919,932] [2024-11-23 23:06:29,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:06:29,039 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:06:29,050 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_fa0c9e9b-855c-45e7-9779-3244e053de92/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i[919,932] [2024-11-23 23:06:29,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:06:29,129 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:06:29,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29 WrapperNode [2024-11-23 23:06:29,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:06:29,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:06:29,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:06:29,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:06:29,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,216 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 301 [2024-11-23 23:06:29,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:06:29,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:06:29,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:06:29,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:06:29,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,261 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:06:29,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,271 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:06:29,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:06:29,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:06:29,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:06:29,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (1/1) ... [2024-11-23 23:06:29,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:06:29,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:06:29,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:06:29,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:06:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:06:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:06:29,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:06:29,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:06:29,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:06:29,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:06:29,448 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:06:29,450 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:06:30,213 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-23 23:06:30,213 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:06:30,225 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:06:30,225 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:06:30,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:06:30 BoogieIcfgContainer [2024-11-23 23:06:30,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:06:30,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:06:30,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:06:30,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:06:30,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:06:28" (1/3) ... [2024-11-23 23:06:30,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e43a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:06:30, skipping insertion in model container [2024-11-23 23:06:30,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:06:29" (2/3) ... [2024-11-23 23:06:30,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e43a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:06:30, skipping insertion in model container [2024-11-23 23:06:30,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:06:30" (3/3) ... [2024-11-23 23:06:30,235 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2024-11-23 23:06:30,252 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:06:30,254 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i that has 2 procedures, 131 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:06:30,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:06:30,349 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;@267c608b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:06:30,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:06:30,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 80 states have (on average 1.425) internal successors, (114), 81 states have internal predecessors, (114), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 23:06:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:06:30,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:30,380 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:30,380 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:30,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:30,387 INFO L85 PathProgramCache]: Analyzing trace with hash -479091727, now seen corresponding path program 1 times [2024-11-23 23:06:30,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:30,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686764591] [2024-11-23 23:06:30,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:30,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-23 23:06:30,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:30,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686764591] [2024-11-23 23:06:30,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686764591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:06:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197146386] [2024-11-23 23:06:30,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:30,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:06:30,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:06:30,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:06:30,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:06:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:31,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:06:31,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:06:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-23 23:06:31,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:06:31,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197146386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:31,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:06:31,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:06:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044125779] [2024-11-23 23:06:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:31,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:06:31,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:31,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:06:31,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:06:31,385 INFO L87 Difference]: Start difference. First operand has 131 states, 80 states have (on average 1.425) internal successors, (114), 81 states have internal predecessors, (114), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:06:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:31,481 INFO L93 Difference]: Finished difference Result 255 states and 462 transitions. [2024-11-23 23:06:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:06:31,483 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 295 [2024-11-23 23:06:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:31,497 INFO L225 Difference]: With dead ends: 255 [2024-11-23 23:06:31,498 INFO L226 Difference]: Without dead ends: 127 [2024-11-23 23:06:31,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:06:31,516 INFO L435 NwaCegarLoop]: 203 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, 203 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:31,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:06:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-23 23:06:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-23 23:06:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 23:06:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 203 transitions. [2024-11-23 23:06:31,604 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 203 transitions. Word has length 295 [2024-11-23 23:06:31,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:31,604 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 203 transitions. [2024-11-23 23:06:31,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:06:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 203 transitions. [2024-11-23 23:06:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:06:31,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:31,614 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:31,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:06:31,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:06:31,814 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:31,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1513420009, now seen corresponding path program 1 times [2024-11-23 23:06:31,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339537336] [2024-11-23 23:06:31,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:06:34,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:34,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339537336] [2024-11-23 23:06:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339537336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:34,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:06:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832397473] [2024-11-23 23:06:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:34,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:06:34,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:34,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:06:34,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:06:34,573 INFO L87 Difference]: Start difference. First operand 127 states and 203 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:06:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:35,856 INFO L93 Difference]: Finished difference Result 410 states and 659 transitions. [2024-11-23 23:06:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:06:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:06:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:35,862 INFO L225 Difference]: With dead ends: 410 [2024-11-23 23:06:35,863 INFO L226 Difference]: Without dead ends: 286 [2024-11-23 23:06:35,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:06:35,868 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 357 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:35,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 789 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:06:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-23 23:06:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 215. [2024-11-23 23:06:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 116 states have (on average 1.3017241379310345) internal successors, (151), 116 states have internal predecessors, (151), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:06:35,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 343 transitions. [2024-11-23 23:06:35,939 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 343 transitions. Word has length 295 [2024-11-23 23:06:35,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:35,940 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 343 transitions. [2024-11-23 23:06:35,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:06:35,941 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 343 transitions. [2024-11-23 23:06:35,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:06:35,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:35,973 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:35,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:06:35,974 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:35,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash -787402581, now seen corresponding path program 1 times [2024-11-23 23:06:35,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:35,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664853065] [2024-11-23 23:06:35,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:35,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:06:39,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664853065] [2024-11-23 23:06:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664853065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:39,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:06:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617980332] [2024-11-23 23:06:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:39,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:06:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:39,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:06:39,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:06:39,808 INFO L87 Difference]: Start difference. First operand 215 states and 343 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:06:43,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:43,274 INFO L93 Difference]: Finished difference Result 612 states and 975 transitions. [2024-11-23 23:06:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:06:43,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 295 [2024-11-23 23:06:43,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:43,286 INFO L225 Difference]: With dead ends: 612 [2024-11-23 23:06:43,286 INFO L226 Difference]: Without dead ends: 488 [2024-11-23 23:06:43,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:06:43,289 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 1543 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:43,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 997 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:06:43,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-23 23:06:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 233. [2024-11-23 23:06:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 134 states have (on average 1.3507462686567164) internal successors, (181), 134 states have internal predecessors, (181), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:06:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 373 transitions. [2024-11-23 23:06:43,356 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 373 transitions. Word has length 295 [2024-11-23 23:06:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:43,357 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 373 transitions. [2024-11-23 23:06:43,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:06:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 373 transitions. [2024-11-23 23:06:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:06:43,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:43,362 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:43,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:06:43,363 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:43,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:43,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1919216813, now seen corresponding path program 1 times [2024-11-23 23:06:43,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:43,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951556499] [2024-11-23 23:06:43,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:43,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:07:00,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951556499] [2024-11-23 23:07:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951556499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:00,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:00,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:07:00,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335688291] [2024-11-23 23:07:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:00,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:07:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:00,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:07:00,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:07:00,128 INFO L87 Difference]: Start difference. First operand 233 states and 373 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:04,165 INFO L93 Difference]: Finished difference Result 567 states and 909 transitions. [2024-11-23 23:07:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:07:04,167 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:07:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:04,170 INFO L225 Difference]: With dead ends: 567 [2024-11-23 23:07:04,170 INFO L226 Difference]: Without dead ends: 443 [2024-11-23 23:07:04,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:07:04,172 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 839 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:04,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 982 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:07:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-23 23:07:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 281. [2024-11-23 23:07:04,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 182 states have (on average 1.445054945054945) internal successors, (263), 182 states have internal predecessors, (263), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:07:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 455 transitions. [2024-11-23 23:07:04,224 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 455 transitions. Word has length 295 [2024-11-23 23:07:04,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:04,228 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 455 transitions. [2024-11-23 23:07:04,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 455 transitions. [2024-11-23 23:07:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:07:04,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:04,234 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:04,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:07:04,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:04,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:04,235 INFO L85 PathProgramCache]: Analyzing trace with hash 908099563, now seen corresponding path program 1 times [2024-11-23 23:07:04,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:04,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408672488] [2024-11-23 23:07:04,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:04,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:07:04,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:04,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408672488] [2024-11-23 23:07:04,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408672488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:04,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:04,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:07:04,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886122159] [2024-11-23 23:07:04,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:04,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:07:04,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:04,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:07:04,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:07:04,677 INFO L87 Difference]: Start difference. First operand 281 states and 455 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:04,784 INFO L93 Difference]: Finished difference Result 476 states and 765 transitions. [2024-11-23 23:07:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:07:04,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:07:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:04,788 INFO L225 Difference]: With dead ends: 476 [2024-11-23 23:07:04,789 INFO L226 Difference]: Without dead ends: 345 [2024-11-23 23:07:04,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:07:04,792 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 72 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:04,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 600 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:07:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-23 23:07:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2024-11-23 23:07:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 238 states have (on average 1.4621848739495797) internal successors, (348), 239 states have internal predecessors, (348), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:07:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 548 transitions. [2024-11-23 23:07:04,842 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 548 transitions. Word has length 295 [2024-11-23 23:07:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:04,843 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 548 transitions. [2024-11-23 23:07:04,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 548 transitions. [2024-11-23 23:07:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:07:04,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:04,849 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:04,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:07:04,850 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:04,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:04,851 INFO L85 PathProgramCache]: Analyzing trace with hash -364700755, now seen corresponding path program 1 times [2024-11-23 23:07:04,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:04,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899296919] [2024-11-23 23:07:04,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:07:06,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:06,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899296919] [2024-11-23 23:07:06,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899296919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:06,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:06,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:07:06,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305492781] [2024-11-23 23:07:06,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:06,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:07:06,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:06,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:07:06,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:07:06,139 INFO L87 Difference]: Start difference. First operand 342 states and 548 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:06,539 INFO L93 Difference]: Finished difference Result 831 states and 1323 transitions. [2024-11-23 23:07:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:07:06,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:07:06,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:06,546 INFO L225 Difference]: With dead ends: 831 [2024-11-23 23:07:06,546 INFO L226 Difference]: Without dead ends: 656 [2024-11-23 23:07:06,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:07:06,548 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 405 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:06,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 615 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:07:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-23 23:07:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 357. [2024-11-23 23:07:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 253 states have (on average 1.4782608695652173) internal successors, (374), 254 states have internal predecessors, (374), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:07:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 574 transitions. [2024-11-23 23:07:06,593 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 574 transitions. Word has length 295 [2024-11-23 23:07:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:06,594 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 574 transitions. [2024-11-23 23:07:06,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 574 transitions. [2024-11-23 23:07:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-23 23:07:06,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:06,598 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:06,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:07:06,599 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:06,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1953048657, now seen corresponding path program 1 times [2024-11-23 23:07:06,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517807471] [2024-11-23 23:07:06,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:06,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:07:19,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:19,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517807471] [2024-11-23 23:07:19,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517807471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:19,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:19,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:07:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565327154] [2024-11-23 23:07:19,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:19,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:07:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:19,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:07:19,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:07:19,301 INFO L87 Difference]: Start difference. First operand 357 states and 574 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:20,602 INFO L93 Difference]: Finished difference Result 636 states and 1018 transitions. [2024-11-23 23:07:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:07:20,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2024-11-23 23:07:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:20,608 INFO L225 Difference]: With dead ends: 636 [2024-11-23 23:07:20,608 INFO L226 Difference]: Without dead ends: 427 [2024-11-23 23:07:20,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:07:20,611 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 204 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:20,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 918 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:07:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-23 23:07:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 342. [2024-11-23 23:07:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 238 states have (on average 1.4621848739495797) internal successors, (348), 239 states have internal predecessors, (348), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:07:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 548 transitions. [2024-11-23 23:07:20,654 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 548 transitions. Word has length 295 [2024-11-23 23:07:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:20,654 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 548 transitions. [2024-11-23 23:07:20,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 548 transitions. [2024-11-23 23:07:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:07:20,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:20,659 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:20,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:07:20,659 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:20,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 536651513, now seen corresponding path program 1 times [2024-11-23 23:07:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934436124] [2024-11-23 23:07:20,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:07:22,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:22,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934436124] [2024-11-23 23:07:22,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934436124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:22,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:22,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:07:22,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349088244] [2024-11-23 23:07:22,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:22,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:07:22,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:22,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:07:22,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:07:22,142 INFO L87 Difference]: Start difference. First operand 342 states and 548 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:23,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:23,800 INFO L93 Difference]: Finished difference Result 802 states and 1289 transitions. [2024-11-23 23:07:23,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:07:23,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:07:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:23,804 INFO L225 Difference]: With dead ends: 802 [2024-11-23 23:07:23,804 INFO L226 Difference]: Without dead ends: 563 [2024-11-23 23:07:23,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:07:23,806 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 273 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:23,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1027 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:07:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-23 23:07:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 471. [2024-11-23 23:07:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 367 states have (on average 1.5122615803814714) internal successors, (555), 368 states have internal predecessors, (555), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:07:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 755 transitions. [2024-11-23 23:07:23,872 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 755 transitions. Word has length 296 [2024-11-23 23:07:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:23,874 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 755 transitions. [2024-11-23 23:07:23,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 755 transitions. [2024-11-23 23:07:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:07:23,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:23,877 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:23,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:07:23,877 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:23,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash 92496221, now seen corresponding path program 1 times [2024-11-23 23:07:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:23,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735207939] [2024-11-23 23:07:23,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:23,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:07:43,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:43,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735207939] [2024-11-23 23:07:43,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735207939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:43,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:43,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:07:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18333950] [2024-11-23 23:07:43,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:43,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:07:43,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:43,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:07:43,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:07:43,881 INFO L87 Difference]: Start difference. First operand 471 states and 755 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:50,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:50,775 INFO L93 Difference]: Finished difference Result 1367 states and 2117 transitions. [2024-11-23 23:07:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 23:07:50,776 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:07:50,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:50,782 INFO L225 Difference]: With dead ends: 1367 [2024-11-23 23:07:50,782 INFO L226 Difference]: Without dead ends: 1128 [2024-11-23 23:07:50,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:07:50,784 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 1272 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:50,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1119 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 23:07:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2024-11-23 23:07:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 499. [2024-11-23 23:07:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 395 states have (on average 1.5367088607594936) internal successors, (607), 396 states have internal predecessors, (607), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:07:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 807 transitions. [2024-11-23 23:07:50,855 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 807 transitions. Word has length 296 [2024-11-23 23:07:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:50,856 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 807 transitions. [2024-11-23 23:07:50,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:07:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 807 transitions. [2024-11-23 23:07:50,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:07:50,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:50,859 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:50,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:07:50,859 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:50,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:50,860 INFO L85 PathProgramCache]: Analyzing trace with hash -918621029, now seen corresponding path program 1 times [2024-11-23 23:07:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:50,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158023507] [2024-11-23 23:07:50,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:50,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:07:59,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158023507] [2024-11-23 23:07:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158023507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:59,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:59,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:07:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295392485] [2024-11-23 23:07:59,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:59,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:07:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:59,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:07:59,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:07:59,979 INFO L87 Difference]: Start difference. First operand 499 states and 807 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:08:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:03,033 INFO L93 Difference]: Finished difference Result 1073 states and 1706 transitions. [2024-11-23 23:08:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:08:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:08:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:03,039 INFO L225 Difference]: With dead ends: 1073 [2024-11-23 23:08:03,039 INFO L226 Difference]: Without dead ends: 831 [2024-11-23 23:08:03,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:08:03,041 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 490 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:03,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1375 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:08:03,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-11-23 23:08:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 545. [2024-11-23 23:08:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 441 states have (on average 1.5328798185941044) internal successors, (676), 442 states have internal predecessors, (676), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:08:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 876 transitions. [2024-11-23 23:08:03,105 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 876 transitions. Word has length 296 [2024-11-23 23:08:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:03,106 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 876 transitions. [2024-11-23 23:08:03,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:08:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 876 transitions. [2024-11-23 23:08:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:08:03,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:03,108 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:03,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:08:03,109 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:03,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash 515198047, now seen corresponding path program 1 times [2024-11-23 23:08:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:03,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047888234] [2024-11-23 23:08:03,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:03,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:08:13,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047888234] [2024-11-23 23:08:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047888234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:08:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166396734] [2024-11-23 23:08:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:13,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:08:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:13,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:08:13,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:08:13,303 INFO L87 Difference]: Start difference. First operand 545 states and 876 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:08:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:14,480 INFO L93 Difference]: Finished difference Result 1016 states and 1621 transitions. [2024-11-23 23:08:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:08:14,481 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:08:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:14,485 INFO L225 Difference]: With dead ends: 1016 [2024-11-23 23:08:14,485 INFO L226 Difference]: Without dead ends: 777 [2024-11-23 23:08:14,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:08:14,487 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 616 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:14,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 777 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:08:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-23 23:08:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 565. [2024-11-23 23:08:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 461 states have (on average 1.5488069414316703) internal successors, (714), 462 states have internal predecessors, (714), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:08:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 914 transitions. [2024-11-23 23:08:14,555 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 914 transitions. Word has length 296 [2024-11-23 23:08:14,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:14,556 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 914 transitions. [2024-11-23 23:08:14,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:08:14,556 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 914 transitions. [2024-11-23 23:08:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:08:14,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:14,559 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:14,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:08:14,559 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:14,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:14,560 INFO L85 PathProgramCache]: Analyzing trace with hash -495919203, now seen corresponding path program 1 times [2024-11-23 23:08:14,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:14,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488490711] [2024-11-23 23:08:14,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:14,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:08:15,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:15,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488490711] [2024-11-23 23:08:15,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488490711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:15,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:15,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:08:15,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360929621] [2024-11-23 23:08:15,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:15,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:08:15,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:15,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:08:15,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:08:15,767 INFO L87 Difference]: Start difference. First operand 565 states and 914 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:08:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:16,780 INFO L93 Difference]: Finished difference Result 1000 states and 1589 transitions. [2024-11-23 23:08:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:08:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:08:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:16,785 INFO L225 Difference]: With dead ends: 1000 [2024-11-23 23:08:16,785 INFO L226 Difference]: Without dead ends: 729 [2024-11-23 23:08:16,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:08:16,787 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 489 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:16,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 902 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:08:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-23 23:08:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 541. [2024-11-23 23:08:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 437 states have (on average 1.5331807780320366) internal successors, (670), 438 states have internal predecessors, (670), 100 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:08:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 870 transitions. [2024-11-23 23:08:16,854 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 870 transitions. Word has length 296 [2024-11-23 23:08:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:16,854 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 870 transitions. [2024-11-23 23:08:16,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:08:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 870 transitions. [2024-11-23 23:08:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:08:16,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:16,857 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:16,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:08:16,858 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:16,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:16,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1546830617, now seen corresponding path program 1 times [2024-11-23 23:08:16,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:16,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081401385] [2024-11-23 23:08:16,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:16,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:08:17,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081401385] [2024-11-23 23:08:17,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081401385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:17,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:17,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:08:17,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945975226] [2024-11-23 23:08:17,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:17,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:08:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:17,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:08:17,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:08:17,204 INFO L87 Difference]: Start difference. First operand 541 states and 870 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:08:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:17,325 INFO L93 Difference]: Finished difference Result 889 states and 1424 transitions. [2024-11-23 23:08:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:08:17,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:08:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:17,329 INFO L225 Difference]: With dead ends: 889 [2024-11-23 23:08:17,329 INFO L226 Difference]: Without dead ends: 621 [2024-11-23 23:08:17,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:08:17,332 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 126 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:17,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 679 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:08:17,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-11-23 23:08:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 507. [2024-11-23 23:08:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 406 states have (on average 1.541871921182266) internal successors, (626), 406 states have internal predecessors, (626), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:08:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 818 transitions. [2024-11-23 23:08:17,395 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 818 transitions. Word has length 296 [2024-11-23 23:08:17,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:17,396 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 818 transitions. [2024-11-23 23:08:17,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:08:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 818 transitions. [2024-11-23 23:08:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:08:17,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:17,398 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:17,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:08:17,398 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:17,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash 535713367, now seen corresponding path program 1 times [2024-11-23 23:08:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8047660] [2024-11-23 23:08:17,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:17,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:08:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8047660] [2024-11-23 23:08:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8047660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:20,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:20,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:08:20,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999506788] [2024-11-23 23:08:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:20,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:08:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:20,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:08:20,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:08:20,025 INFO L87 Difference]: Start difference. First operand 507 states and 818 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:08:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:23,110 INFO L93 Difference]: Finished difference Result 947 states and 1496 transitions. [2024-11-23 23:08:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:08:23,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:08:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:23,116 INFO L225 Difference]: With dead ends: 947 [2024-11-23 23:08:23,117 INFO L226 Difference]: Without dead ends: 706 [2024-11-23 23:08:23,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:08:23,119 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 894 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:23,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1224 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:08:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-23 23:08:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 530. [2024-11-23 23:08:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 429 states have (on average 1.5454545454545454) internal successors, (663), 429 states have internal predecessors, (663), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:08:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 855 transitions. [2024-11-23 23:08:23,200 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 855 transitions. Word has length 296 [2024-11-23 23:08:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:23,200 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 855 transitions. [2024-11-23 23:08:23,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:08:23,201 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 855 transitions. [2024-11-23 23:08:23,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:08:23,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:23,203 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:23,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:08:23,204 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:23,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1052634535, now seen corresponding path program 1 times [2024-11-23 23:08:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:23,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610747297] [2024-11-23 23:08:23,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:08:43,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:43,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610747297] [2024-11-23 23:08:43,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610747297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:43,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:08:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974696457] [2024-11-23 23:08:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:43,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:08:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:43,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:08:43,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:08:43,788 INFO L87 Difference]: Start difference. First operand 530 states and 855 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:08:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:46,312 INFO L93 Difference]: Finished difference Result 890 states and 1424 transitions. [2024-11-23 23:08:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:08:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:08:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:46,316 INFO L225 Difference]: With dead ends: 890 [2024-11-23 23:08:46,316 INFO L226 Difference]: Without dead ends: 656 [2024-11-23 23:08:46,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:08:46,318 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 493 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:46,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1556 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:08:46,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-23 23:08:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 538. [2024-11-23 23:08:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 437 states have (on average 1.5491990846681922) internal successors, (677), 437 states have internal predecessors, (677), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:08:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 869 transitions. [2024-11-23 23:08:46,386 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 869 transitions. Word has length 296 [2024-11-23 23:08:46,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:46,388 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 869 transitions. [2024-11-23 23:08:46,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:08:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 869 transitions. [2024-11-23 23:08:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:08:46,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:46,390 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:46,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:08:46,391 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:46,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash 958415193, now seen corresponding path program 1 times [2024-11-23 23:08:46,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:46,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612903111] [2024-11-23 23:08:46,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:46,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:08:48,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:48,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612903111] [2024-11-23 23:08:48,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612903111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:48,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:48,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:08:48,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796267932] [2024-11-23 23:08:48,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:48,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:08:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:48,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:08:48,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:08:48,502 INFO L87 Difference]: Start difference. First operand 538 states and 869 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:08:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:49,774 INFO L93 Difference]: Finished difference Result 956 states and 1522 transitions. [2024-11-23 23:08:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:08:49,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-11-23 23:08:49,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:49,779 INFO L225 Difference]: With dead ends: 956 [2024-11-23 23:08:49,779 INFO L226 Difference]: Without dead ends: 688 [2024-11-23 23:08:49,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:08:49,781 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 299 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:49,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1196 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:08:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-23 23:08:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 548. [2024-11-23 23:08:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 447 states have (on average 1.54586129753915) internal successors, (691), 447 states have internal predecessors, (691), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-23 23:08:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 883 transitions. [2024-11-23 23:08:49,848 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 883 transitions. Word has length 296 [2024-11-23 23:08:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:49,848 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 883 transitions. [2024-11-23 23:08:49,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:08:49,849 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 883 transitions. [2024-11-23 23:08:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-23 23:08:49,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:49,851 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:49,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:08:49,851 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:49,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash -629932709, now seen corresponding path program 1 times [2024-11-23 23:08:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123530781] [2024-11-23 23:08:49,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:09:04,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:09:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123530781] [2024-11-23 23:09:04,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123530781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:04,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:04,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:09:04,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181109555] [2024-11-23 23:09:04,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:04,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:09:04,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:09:04,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:09:04,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:09:04,406 INFO L87 Difference]: Start difference. First operand 548 states and 883 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:09:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:08,896 INFO L93 Difference]: Finished difference Result 1170 states and 1861 transitions. [2024-11-23 23:09:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:09:08,896 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-11-23 23:09:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:08,900 INFO L225 Difference]: With dead ends: 1170 [2024-11-23 23:09:08,900 INFO L226 Difference]: Without dead ends: 936 [2024-11-23 23:09:08,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:09:08,901 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 921 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:08,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1088 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:09:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-11-23 23:09:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 696. [2024-11-23 23:09:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 545 states have (on average 1.528440366972477) internal successors, (833), 545 states have internal predecessors, (833), 144 states have call successors, (144), 6 states have call predecessors, (144), 6 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:09:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1121 transitions. [2024-11-23 23:09:09,016 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1121 transitions. Word has length 296 [2024-11-23 23:09:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:09,016 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 1121 transitions. [2024-11-23 23:09:09,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-23 23:09:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1121 transitions. [2024-11-23 23:09:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-23 23:09:09,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:09,019 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:09,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:09:09,019 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:09:09,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash 992239688, now seen corresponding path program 1 times [2024-11-23 23:09:09,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:09:09,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94112692] [2024-11-23 23:09:09,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:09:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:09:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:09:37,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:09:37,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94112692] [2024-11-23 23:09:37,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94112692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:09:37,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:09:37,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:09:37,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174792749] [2024-11-23 23:09:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:09:37,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:09:37,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:09:37,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:09:37,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:09:37,747 INFO L87 Difference]: Start difference. First operand 696 states and 1121 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:09:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:09:39,747 INFO L93 Difference]: Finished difference Result 798 states and 1248 transitions. [2024-11-23 23:09:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:09:39,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 297 [2024-11-23 23:09:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:09:39,751 INFO L225 Difference]: With dead ends: 798 [2024-11-23 23:09:39,752 INFO L226 Difference]: Without dead ends: 796 [2024-11-23 23:09:39,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:09:39,753 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 113 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:09:39,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 948 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:09:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2024-11-23 23:09:39,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 736. [2024-11-23 23:09:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 583 states have (on average 1.5128644939965694) internal successors, (882), 583 states have internal predecessors, (882), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:09:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1170 transitions. [2024-11-23 23:09:39,885 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1170 transitions. Word has length 297 [2024-11-23 23:09:39,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:09:39,886 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 1170 transitions. [2024-11-23 23:09:39,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:09:39,886 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1170 transitions. [2024-11-23 23:09:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 23:09:39,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:09:39,889 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:09:39,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:09:39,889 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:09:39,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:09:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash 30518573, now seen corresponding path program 1 times [2024-11-23 23:09:39,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:09:39,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297858018] [2024-11-23 23:09:39,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:09:39,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:09:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:11:12,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:12,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297858018] [2024-11-23 23:11:12,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297858018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:12,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:12,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:11:12,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095645740] [2024-11-23 23:11:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:12,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:11:12,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:12,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:11:12,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:11:12,914 INFO L87 Difference]: Start difference. First operand 736 states and 1170 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:14,621 INFO L93 Difference]: Finished difference Result 813 states and 1261 transitions. [2024-11-23 23:11:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:11:14,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-11-23 23:11:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:14,626 INFO L225 Difference]: With dead ends: 813 [2024-11-23 23:11:14,626 INFO L226 Difference]: Without dead ends: 811 [2024-11-23 23:11:14,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:11:14,627 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 83 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:14,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1702 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:11:14,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2024-11-23 23:11:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 738. [2024-11-23 23:11:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 585 states have (on average 1.511111111111111) internal successors, (884), 585 states have internal predecessors, (884), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:11:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1172 transitions. [2024-11-23 23:11:14,751 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1172 transitions. Word has length 298 [2024-11-23 23:11:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:14,751 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1172 transitions. [2024-11-23 23:11:14,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1172 transitions. [2024-11-23 23:11:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 23:11:14,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:14,755 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:14,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:11:14,755 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:14,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1972202770, now seen corresponding path program 1 times [2024-11-23 23:11:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315417709] [2024-11-23 23:11:14,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:14,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:11:14,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:14,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315417709] [2024-11-23 23:11:14,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315417709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:14,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:14,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:11:14,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47488302] [2024-11-23 23:11:14,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:14,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:11:14,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:14,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:11:14,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:14,906 INFO L87 Difference]: Start difference. First operand 738 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:15,128 INFO L93 Difference]: Finished difference Result 1267 states and 1984 transitions. [2024-11-23 23:11:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:11:15,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-11-23 23:11:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:15,134 INFO L225 Difference]: With dead ends: 1267 [2024-11-23 23:11:15,134 INFO L226 Difference]: Without dead ends: 822 [2024-11-23 23:11:15,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:15,136 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 41 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:15,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 405 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:11:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2024-11-23 23:11:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 794. [2024-11-23 23:11:15,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 615 states have (on average 1.4796747967479675) internal successors, (910), 617 states have internal predecessors, (910), 164 states have call successors, (164), 14 states have call predecessors, (164), 14 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-23 23:11:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1238 transitions. [2024-11-23 23:11:15,309 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1238 transitions. Word has length 298 [2024-11-23 23:11:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:15,310 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1238 transitions. [2024-11-23 23:11:15,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1238 transitions. [2024-11-23 23:11:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 23:11:15,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:15,313 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:15,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:11:15,313 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:15,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:15,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2027483247, now seen corresponding path program 1 times [2024-11-23 23:11:15,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:15,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862649540] [2024-11-23 23:11:15,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:15,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:11:15,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:15,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862649540] [2024-11-23 23:11:15,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862649540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:15,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:15,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:11:15,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496463307] [2024-11-23 23:11:15,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:15,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:11:15,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:15,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:11:15,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:15,467 INFO L87 Difference]: Start difference. First operand 794 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:15,819 INFO L93 Difference]: Finished difference Result 1335 states and 2055 transitions. [2024-11-23 23:11:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:11:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-11-23 23:11:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:15,825 INFO L225 Difference]: With dead ends: 1335 [2024-11-23 23:11:15,825 INFO L226 Difference]: Without dead ends: 810 [2024-11-23 23:11:15,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:15,828 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 48 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:15,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 381 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:11:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-11-23 23:11:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 740. [2024-11-23 23:11:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 584 states have (on average 1.4982876712328768) internal successors, (875), 584 states have internal predecessors, (875), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:11:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1163 transitions. [2024-11-23 23:11:15,961 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1163 transitions. Word has length 298 [2024-11-23 23:11:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:15,962 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1163 transitions. [2024-11-23 23:11:15,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1163 transitions. [2024-11-23 23:11:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-23 23:11:15,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:15,966 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:15,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:11:15,967 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:15,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:15,967 INFO L85 PathProgramCache]: Analyzing trace with hash 922761658, now seen corresponding path program 1 times [2024-11-23 23:11:15,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:15,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020631121] [2024-11-23 23:11:15,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:15,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:11:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:27,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020631121] [2024-11-23 23:11:27,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020631121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:27,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:11:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648515521] [2024-11-23 23:11:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:27,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:11:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:27,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:11:27,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:11:27,566 INFO L87 Difference]: Start difference. First operand 740 states and 1163 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:28,995 INFO L93 Difference]: Finished difference Result 1244 states and 1913 transitions. [2024-11-23 23:11:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:11:28,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-11-23 23:11:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:29,004 INFO L225 Difference]: With dead ends: 1244 [2024-11-23 23:11:29,004 INFO L226 Difference]: Without dead ends: 984 [2024-11-23 23:11:29,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:11:29,007 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 230 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:29,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 806 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:11:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-23 23:11:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 710. [2024-11-23 23:11:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 554 states have (on average 1.4945848375451263) internal successors, (828), 554 states have internal predecessors, (828), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:11:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1116 transitions. [2024-11-23 23:11:29,146 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1116 transitions. Word has length 298 [2024-11-23 23:11:29,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:29,146 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 1116 transitions. [2024-11-23 23:11:29,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1116 transitions. [2024-11-23 23:11:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-23 23:11:29,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:29,150 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:29,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:11:29,150 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:29,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1094333243, now seen corresponding path program 1 times [2024-11-23 23:11:29,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:29,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531736954] [2024-11-23 23:11:29,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:29,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:11:57,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531736954] [2024-11-23 23:11:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531736954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:57,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:57,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:11:57,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770212431] [2024-11-23 23:11:57,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:57,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:11:57,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:57,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:11:57,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:11:57,707 INFO L87 Difference]: Start difference. First operand 710 states and 1116 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:59,151 INFO L93 Difference]: Finished difference Result 785 states and 1203 transitions. [2024-11-23 23:11:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:11:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 299 [2024-11-23 23:11:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:59,156 INFO L225 Difference]: With dead ends: 785 [2024-11-23 23:11:59,156 INFO L226 Difference]: Without dead ends: 783 [2024-11-23 23:11:59,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:11:59,157 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 76 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:59,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1381 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:11:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-11-23 23:11:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 717. [2024-11-23 23:11:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 561 states have (on average 1.4919786096256684) internal successors, (837), 561 states have internal predecessors, (837), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:11:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1125 transitions. [2024-11-23 23:11:59,293 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1125 transitions. Word has length 299 [2024-11-23 23:11:59,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:59,294 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1125 transitions. [2024-11-23 23:11:59,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:11:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1125 transitions. [2024-11-23 23:11:59,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-23 23:11:59,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:59,297 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:59,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:11:59,297 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:59,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -540436355, now seen corresponding path program 1 times [2024-11-23 23:11:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968320753] [2024-11-23 23:11:59,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:13:42,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:13:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968320753] [2024-11-23 23:13:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968320753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:13:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:13:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:13:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301737322] [2024-11-23 23:13:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:13:42,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:13:42,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:13:42,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:13:42,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:13:42,489 INFO L87 Difference]: Start difference. First operand 717 states and 1125 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:13:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:13:44,013 INFO L93 Difference]: Finished difference Result 796 states and 1218 transitions. [2024-11-23 23:13:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:13:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 299 [2024-11-23 23:13:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:13:44,019 INFO L225 Difference]: With dead ends: 796 [2024-11-23 23:13:44,019 INFO L226 Difference]: Without dead ends: 794 [2024-11-23 23:13:44,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:13:44,024 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 111 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:13:44,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1863 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:13:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2024-11-23 23:13:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 707. [2024-11-23 23:13:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 551 states have (on average 1.4972776769509981) internal successors, (825), 551 states have internal predecessors, (825), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:13:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1113 transitions. [2024-11-23 23:13:44,168 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1113 transitions. Word has length 299 [2024-11-23 23:13:44,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:13:44,169 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1113 transitions. [2024-11-23 23:13:44,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:13:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1113 transitions. [2024-11-23 23:13:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-23 23:13:44,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:13:44,173 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:13:44,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:13:44,174 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:13:44,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:13:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash -276634702, now seen corresponding path program 1 times [2024-11-23 23:13:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:13:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049910325] [2024-11-23 23:13:44,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:44,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:13:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:13:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:13:46,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:13:46,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049910325] [2024-11-23 23:13:46,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049910325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:13:46,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:13:46,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:13:46,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630467267] [2024-11-23 23:13:46,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:13:46,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:13:46,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:13:46,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:13:46,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:13:46,010 INFO L87 Difference]: Start difference. First operand 707 states and 1113 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:13:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:13:46,537 INFO L93 Difference]: Finished difference Result 778 states and 1197 transitions. [2024-11-23 23:13:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:13:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-11-23 23:13:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:13:46,541 INFO L225 Difference]: With dead ends: 778 [2024-11-23 23:13:46,541 INFO L226 Difference]: Without dead ends: 776 [2024-11-23 23:13:46,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:13:46,542 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 80 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:13:46,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1343 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:13:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-11-23 23:13:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 717. [2024-11-23 23:13:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 561 states have (on average 1.4955436720142603) internal successors, (839), 561 states have internal predecessors, (839), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:13:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1127 transitions. [2024-11-23 23:13:46,653 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1127 transitions. Word has length 300 [2024-11-23 23:13:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:13:46,654 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1127 transitions. [2024-11-23 23:13:46,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:13:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1127 transitions. [2024-11-23 23:13:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-23 23:13:46,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:13:46,657 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:13:46,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:13:46,657 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:13:46,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:13:46,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2007093837, now seen corresponding path program 1 times [2024-11-23 23:13:46,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:13:46,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347014635] [2024-11-23 23:13:46,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:13:46,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:13:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:14:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:14:23,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:14:23,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347014635] [2024-11-23 23:14:23,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347014635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:14:23,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:14:23,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:14:23,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021514173] [2024-11-23 23:14:23,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:14:23,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:14:23,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:14:23,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:14:23,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:14:23,811 INFO L87 Difference]: Start difference. First operand 717 states and 1127 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:14:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:14:25,947 INFO L93 Difference]: Finished difference Result 816 states and 1250 transitions. [2024-11-23 23:14:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:14:25,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-11-23 23:14:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:14:25,956 INFO L225 Difference]: With dead ends: 816 [2024-11-23 23:14:25,956 INFO L226 Difference]: Without dead ends: 814 [2024-11-23 23:14:25,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:14:25,958 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 92 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:14:25,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1503 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:14:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2024-11-23 23:14:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 727. [2024-11-23 23:14:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 571 states have (on average 1.4973730297723293) internal successors, (855), 571 states have internal predecessors, (855), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:14:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1143 transitions. [2024-11-23 23:14:26,095 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1143 transitions. Word has length 300 [2024-11-23 23:14:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:14:26,096 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1143 transitions. [2024-11-23 23:14:26,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:14:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1143 transitions. [2024-11-23 23:14:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-23 23:14:26,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:14:26,099 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:14:26,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:14:26,099 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:14:26,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:14:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1728251553, now seen corresponding path program 1 times [2024-11-23 23:14:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:14:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548721688] [2024-11-23 23:14:26,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:26,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:14:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:14:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:14:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:14:26,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548721688] [2024-11-23 23:14:26,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548721688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:14:26,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:14:26,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:14:26,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775905122] [2024-11-23 23:14:26,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:14:26,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:14:26,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:14:26,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:14:26,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:14:26,228 INFO L87 Difference]: Start difference. First operand 727 states and 1143 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:14:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:14:26,394 INFO L93 Difference]: Finished difference Result 1315 states and 2025 transitions. [2024-11-23 23:14:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:14:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 301 [2024-11-23 23:14:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:14:26,400 INFO L225 Difference]: With dead ends: 1315 [2024-11-23 23:14:26,400 INFO L226 Difference]: Without dead ends: 827 [2024-11-23 23:14:26,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:14:26,402 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 40 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:14:26,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 416 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:14:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-23 23:14:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 743. [2024-11-23 23:14:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 587 states have (on average 1.48381601362862) internal successors, (871), 587 states have internal predecessors, (871), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:14:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1159 transitions. [2024-11-23 23:14:26,528 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1159 transitions. Word has length 301 [2024-11-23 23:14:26,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:14:26,528 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1159 transitions. [2024-11-23 23:14:26,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:14:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1159 transitions. [2024-11-23 23:14:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-23 23:14:26,530 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:14:26,531 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:14:26,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 23:14:26,531 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:14:26,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:14:26,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1929638886, now seen corresponding path program 1 times [2024-11-23 23:14:26,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:14:26,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326212894] [2024-11-23 23:14:26,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:26,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:14:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:14:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:14:26,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:14:26,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326212894] [2024-11-23 23:14:26,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326212894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:14:26,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:14:26,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:14:26,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484768551] [2024-11-23 23:14:26,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:14:26,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:14:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:14:26,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:14:26,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:14:26,656 INFO L87 Difference]: Start difference. First operand 743 states and 1159 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:14:26,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:14:26,845 INFO L93 Difference]: Finished difference Result 1321 states and 2025 transitions. [2024-11-23 23:14:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:14:26,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 301 [2024-11-23 23:14:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:14:26,850 INFO L225 Difference]: With dead ends: 1321 [2024-11-23 23:14:26,850 INFO L226 Difference]: Without dead ends: 817 [2024-11-23 23:14:26,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:14:26,852 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 43 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:14:26,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 385 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:14:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-23 23:14:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 743. [2024-11-23 23:14:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 587 states have (on average 1.4787052810902896) internal successors, (868), 587 states have internal predecessors, (868), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:14:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1156 transitions. [2024-11-23 23:14:26,966 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1156 transitions. Word has length 301 [2024-11-23 23:14:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:14:26,967 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1156 transitions. [2024-11-23 23:14:26,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:14:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1156 transitions. [2024-11-23 23:14:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-23 23:14:26,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:14:26,970 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:14:26,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:14:26,970 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:14:26,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:14:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1885584966, now seen corresponding path program 1 times [2024-11-23 23:14:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:14:26,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076614886] [2024-11-23 23:14:26,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:14:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-23 23:16:07,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:16:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076614886] [2024-11-23 23:16:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076614886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:16:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:16:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:16:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280389418] [2024-11-23 23:16:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:16:07,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:16:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:07,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:16:07,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:16:07,737 INFO L87 Difference]: Start difference. First operand 743 states and 1156 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:16:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:16:09,341 INFO L93 Difference]: Finished difference Result 828 states and 1255 transitions. [2024-11-23 23:16:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:16:09,342 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 301 [2024-11-23 23:16:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:16:09,345 INFO L225 Difference]: With dead ends: 828 [2024-11-23 23:16:09,345 INFO L226 Difference]: Without dead ends: 826 [2024-11-23 23:16:09,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:16:09,346 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 109 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:16:09,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1831 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:16:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-23 23:16:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 731. [2024-11-23 23:16:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 575 states have (on average 1.4852173913043478) internal successors, (854), 575 states have internal predecessors, (854), 144 states have call successors, (144), 11 states have call predecessors, (144), 11 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:16:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1142 transitions. [2024-11-23 23:16:09,480 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1142 transitions. Word has length 301 [2024-11-23 23:16:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:16:09,480 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1142 transitions. [2024-11-23 23:16:09,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-23 23:16:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1142 transitions. [2024-11-23 23:16:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-23 23:16:09,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:16:09,483 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:16:09,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 23:16:09,484 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:16:09,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:16:09,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1403256045, now seen corresponding path program 1 times [2024-11-23 23:16:09,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:16:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739152433] [2024-11-23 23:16:09,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:09,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:16:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2024-11-23 23:16:10,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:16:10,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739152433] [2024-11-23 23:16:10,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739152433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:16:10,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057978211] [2024-11-23 23:16:10,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:10,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:16:10,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:16:10,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:16:10,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa0c9e9b-855c-45e7-9779-3244e053de92/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:16:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:10,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 23:16:10,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:17:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2024-11-23 23:17:37,129 INFO L312 TraceCheckSpWp]: Computing backward predicates...