./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-86.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_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/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_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/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_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/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 23a05992f4024df2d983a8fb4ad6ac19034ad7c6bce98692b4d6369898cca580 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:33:27,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:33:27,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:33:27,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:33:27,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:33:27,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:33:27,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:33:27,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:33:27,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:33:27,802 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:33:27,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:33:27,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:33:27,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:33:27,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:33:27,804 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:33:27,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:33:27,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:33:27,805 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:33:27,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:33:27,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:33:27,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:33:27,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:33:27,806 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:33:27,806 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:33:27,806 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:33:27,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:33:27,806 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:33:27,806 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:33:27,806 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:33:27,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:33:27,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:33:27,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:33:27,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:33:27,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:33:27,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:33:27,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:33:27,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:33:27,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:33:27,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:33:27,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:33:27,809 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_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/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 -> 23a05992f4024df2d983a8fb4ad6ac19034ad7c6bce98692b4d6369898cca580 [2024-11-24 01:33:28,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:33:28,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:33:28,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:33:28,195 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:33:28,195 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:33:28,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-86.i [2024-11-24 01:33:31,260 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/data/fb383b750/dff79d57b1d4429f84f18a40f6fe7d83/FLAG0cfd50949 [2024-11-24 01:33:31,650 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:33:31,653 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-86.i [2024-11-24 01:33:31,672 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/data/fb383b750/dff79d57b1d4429f84f18a40f6fe7d83/FLAG0cfd50949 [2024-11-24 01:33:31,692 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/data/fb383b750/dff79d57b1d4429f84f18a40f6fe7d83 [2024-11-24 01:33:31,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:33:31,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:33:31,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:33:31,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:33:31,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:33:31,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:33:31" (1/1) ... [2024-11-24 01:33:31,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500b3d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:31, skipping insertion in model container [2024-11-24 01:33:31,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:33:31" (1/1) ... [2024-11-24 01:33:31,735 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:33:31,905 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_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-86.i[919,932] [2024-11-24 01:33:32,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:33:32,037 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:33:32,050 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_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-86.i[919,932] [2024-11-24 01:33:32,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:33:32,114 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:33:32,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32 WrapperNode [2024-11-24 01:33:32,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:33:32,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:33:32,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:33:32,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:33:32,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,217 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 247 [2024-11-24 01:33:32,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:33:32,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:33:32,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:33:32,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:33:32,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,270 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:33:32,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,286 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:33:32,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:33:32,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:33:32,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:33:32,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (1/1) ... [2024-11-24 01:33:32,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:33:32,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:32,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:33:32,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:33:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:33:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:33:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:33:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:33:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:33:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:33:32,479 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:33:32,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:33:33,062 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-24 01:33:33,062 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:33:33,075 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:33:33,075 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:33:33,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:33:33 BoogieIcfgContainer [2024-11-24 01:33:33,076 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:33:33,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:33:33,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:33:33,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:33:33,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:33:31" (1/3) ... [2024-11-24 01:33:33,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf2a7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:33:33, skipping insertion in model container [2024-11-24 01:33:33,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:33:32" (2/3) ... [2024-11-24 01:33:33,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf2a7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:33:33, skipping insertion in model container [2024-11-24 01:33:33,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:33:33" (3/3) ... [2024-11-24 01:33:33,087 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-86.i [2024-11-24 01:33:33,104 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:33:33,105 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-86.i that has 2 procedures, 104 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:33:33,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:33:33,188 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;@1f5f1f49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:33:33,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:33:33,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:33:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:33:33,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:33,214 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:33,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:33,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash 750140910, now seen corresponding path program 1 times [2024-11-24 01:33:33,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:33,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803523797] [2024-11-24 01:33:33,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-24 01:33:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803523797] [2024-11-24 01:33:33,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803523797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:33,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141634334] [2024-11-24 01:33:33,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:33,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:33,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:33,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:33,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:33:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:33,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:33:33,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-24 01:33:33,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:33:33,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141634334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:33:33,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:33:33,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:33:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596899260] [2024-11-24 01:33:33,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:33:33,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:33:33,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:34,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:33:34,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:33:34,024 INFO L87 Difference]: Start difference. First operand has 104 states, 70 states have (on average 1.4714285714285715) internal successors, (103), 71 states have internal predecessors, (103), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:33:34,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:34,061 INFO L93 Difference]: Finished difference Result 201 states and 355 transitions. [2024-11-24 01:33:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:33:34,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 197 [2024-11-24 01:33:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:34,071 INFO L225 Difference]: With dead ends: 201 [2024-11-24 01:33:34,071 INFO L226 Difference]: Without dead ends: 100 [2024-11-24 01:33:34,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:33:34,078 INFO L435 NwaCegarLoop]: 157 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, 157 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:34,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:33:34,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-24 01:33:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-24 01:33:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:33:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 157 transitions. [2024-11-24 01:33:34,125 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 157 transitions. Word has length 197 [2024-11-24 01:33:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:34,125 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 157 transitions. [2024-11-24 01:33:34,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:33:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 157 transitions. [2024-11-24 01:33:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:33:34,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:34,132 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:34,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:33:34,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:33:34,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:34,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash -263955024, now seen corresponding path program 1 times [2024-11-24 01:33:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:34,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811150954] [2024-11-24 01:33:34,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:33:34,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:34,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811150954] [2024-11-24 01:33:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811150954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:33:34,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:33:34,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:33:34,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732525520] [2024-11-24 01:33:34,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:33:34,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:33:34,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:34,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:33:34,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:33:34,913 INFO L87 Difference]: Start difference. First operand 100 states and 157 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:33:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:34,978 INFO L93 Difference]: Finished difference Result 198 states and 313 transitions. [2024-11-24 01:33:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:33:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-11-24 01:33:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:34,982 INFO L225 Difference]: With dead ends: 198 [2024-11-24 01:33:34,982 INFO L226 Difference]: Without dead ends: 101 [2024-11-24 01:33:34,987 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 [2024-11-24 01:33:34,988 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:34,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:33:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-24 01:33:35,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-24 01:33:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.411764705882353) internal successors, (96), 68 states have internal predecessors, (96), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 01:33:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 158 transitions. [2024-11-24 01:33:35,014 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 158 transitions. Word has length 197 [2024-11-24 01:33:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:35,016 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 158 transitions. [2024-11-24 01:33:35,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:33:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 158 transitions. [2024-11-24 01:33:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:33:35,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:35,023 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:35,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:33:35,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:35,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2036867566, now seen corresponding path program 1 times [2024-11-24 01:33:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:35,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939352695] [2024-11-24 01:33:35,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:35,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:33:44,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:44,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939352695] [2024-11-24 01:33:44,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939352695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:33:44,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:33:44,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:33:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554475997] [2024-11-24 01:33:44,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:33:44,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:33:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:44,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:33:44,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:33:44,198 INFO L87 Difference]: Start difference. First operand 101 states and 158 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:33:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:46,047 INFO L93 Difference]: Finished difference Result 383 states and 590 transitions. [2024-11-24 01:33:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:33:46,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-11-24 01:33:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:46,051 INFO L225 Difference]: With dead ends: 383 [2024-11-24 01:33:46,055 INFO L226 Difference]: Without dead ends: 285 [2024-11-24 01:33:46,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:33:46,057 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 431 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:46,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1058 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:33:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-24 01:33:46,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 199. [2024-11-24 01:33:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 134 states have (on average 1.3955223880597014) internal successors, (187), 134 states have internal predecessors, (187), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-24 01:33:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 311 transitions. [2024-11-24 01:33:46,104 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 311 transitions. Word has length 197 [2024-11-24 01:33:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:46,107 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 311 transitions. [2024-11-24 01:33:46,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:33:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 311 transitions. [2024-11-24 01:33:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:33:46,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:46,113 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:46,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:33:46,113 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:46,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:46,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1557035152, now seen corresponding path program 1 times [2024-11-24 01:33:46,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:46,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119585697] [2024-11-24 01:33:46,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:46,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:33:46,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119585697] [2024-11-24 01:33:46,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119585697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:33:46,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:33:46,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:33:46,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441726073] [2024-11-24 01:33:46,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:33:46,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:33:46,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:46,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:33:46,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:33:46,244 INFO L87 Difference]: Start difference. First operand 199 states and 311 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:33:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:46,303 INFO L93 Difference]: Finished difference Result 394 states and 619 transitions. [2024-11-24 01:33:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:33:46,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-11-24 01:33:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:46,310 INFO L225 Difference]: With dead ends: 394 [2024-11-24 01:33:46,310 INFO L226 Difference]: Without dead ends: 296 [2024-11-24 01:33:46,311 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 [2024-11-24 01:33:46,312 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 148 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:46,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 314 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:33:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-24 01:33:46,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 294. [2024-11-24 01:33:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 197 states have (on average 1.3908629441624365) internal successors, (274), 197 states have internal predecessors, (274), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:33:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 460 transitions. [2024-11-24 01:33:46,369 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 460 transitions. Word has length 197 [2024-11-24 01:33:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:46,371 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 460 transitions. [2024-11-24 01:33:46,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:33:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 460 transitions. [2024-11-24 01:33:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-24 01:33:46,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:46,376 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:46,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:33:46,377 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:46,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1246982480, now seen corresponding path program 1 times [2024-11-24 01:33:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:46,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230800149] [2024-11-24 01:33:46,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:33:46,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:46,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230800149] [2024-11-24 01:33:46,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230800149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:33:46,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:33:46,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:33:46,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2749619] [2024-11-24 01:33:46,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:33:46,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:33:46,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:46,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:33:46,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:33:46,621 INFO L87 Difference]: Start difference. First operand 294 states and 460 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:33:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:46,879 INFO L93 Difference]: Finished difference Result 510 states and 792 transitions. [2024-11-24 01:33:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:33:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-11-24 01:33:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:46,883 INFO L225 Difference]: With dead ends: 510 [2024-11-24 01:33:46,883 INFO L226 Difference]: Without dead ends: 314 [2024-11-24 01:33:46,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:33:46,885 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 149 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:46,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 535 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:33:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-24 01:33:46,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 292. [2024-11-24 01:33:46,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 195 states have (on average 1.3846153846153846) internal successors, (270), 195 states have internal predecessors, (270), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:33:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 456 transitions. [2024-11-24 01:33:46,922 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 456 transitions. Word has length 197 [2024-11-24 01:33:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:46,922 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 456 transitions. [2024-11-24 01:33:46,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:33:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 456 transitions. [2024-11-24 01:33:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:33:46,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:46,925 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:33:46,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:33:46,925 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:33:46,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1228112962, now seen corresponding path program 1 times [2024-11-24 01:33:46,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:33:46,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817360636] [2024-11-24 01:33:46,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:46,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:33:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:33:56,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:33:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817360636] [2024-11-24 01:33:56,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817360636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:33:56,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:33:56,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:33:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466147175] [2024-11-24 01:33:56,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:33:56,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:33:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:33:56,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:33:56,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:33:56,172 INFO L87 Difference]: Start difference. First operand 292 states and 456 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:34:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:00,311 INFO L93 Difference]: Finished difference Result 342 states and 514 transitions. [2024-11-24 01:34:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:34:00,312 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:34:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:00,315 INFO L225 Difference]: With dead ends: 342 [2024-11-24 01:34:00,315 INFO L226 Difference]: Without dead ends: 340 [2024-11-24 01:34:00,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:34:00,317 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 322 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:00,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1164 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:34:00,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-24 01:34:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 293. [2024-11-24 01:34:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 196 states have (on average 1.3826530612244898) internal successors, (271), 196 states have internal predecessors, (271), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:34:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 457 transitions. [2024-11-24 01:34:00,357 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 457 transitions. Word has length 198 [2024-11-24 01:34:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:00,358 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 457 transitions. [2024-11-24 01:34:00,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:34:00,358 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 457 transitions. [2024-11-24 01:34:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:34:00,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:00,361 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:00,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:34:00,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:00,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:00,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1440270376, now seen corresponding path program 1 times [2024-11-24 01:34:00,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:00,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261682117] [2024-11-24 01:34:00,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:00,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:34:00,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261682117] [2024-11-24 01:34:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261682117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:00,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:00,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:34:00,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928878475] [2024-11-24 01:34:00,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:00,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:34:00,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:00,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:34:00,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:00,623 INFO L87 Difference]: Start difference. First operand 293 states and 457 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:34:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:00,661 INFO L93 Difference]: Finished difference Result 497 states and 776 transitions. [2024-11-24 01:34:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:34:00,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:34:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:00,665 INFO L225 Difference]: With dead ends: 497 [2024-11-24 01:34:00,665 INFO L226 Difference]: Without dead ends: 301 [2024-11-24 01:34:00,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:34:00,666 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 6 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:00,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 305 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:34:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-24 01:34:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 293. [2024-11-24 01:34:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 196 states have (on average 1.3673469387755102) internal successors, (268), 196 states have internal predecessors, (268), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:34:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 454 transitions. [2024-11-24 01:34:00,708 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 454 transitions. Word has length 198 [2024-11-24 01:34:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:00,709 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 454 transitions. [2024-11-24 01:34:00,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:34:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 454 transitions. [2024-11-24 01:34:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:34:00,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:00,714 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:00,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:34:00,714 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:00,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash 334736986, now seen corresponding path program 1 times [2024-11-24 01:34:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:00,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557007208] [2024-11-24 01:34:00,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:34:06,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:06,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557007208] [2024-11-24 01:34:06,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557007208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:06,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:06,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:34:06,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704676197] [2024-11-24 01:34:06,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:06,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:34:06,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:06,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:34:06,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:34:06,222 INFO L87 Difference]: Start difference. First operand 293 states and 454 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:34:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:08,029 INFO L93 Difference]: Finished difference Result 347 states and 514 transitions. [2024-11-24 01:34:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:34:08,030 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 198 [2024-11-24 01:34:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:08,032 INFO L225 Difference]: With dead ends: 347 [2024-11-24 01:34:08,032 INFO L226 Difference]: Without dead ends: 345 [2024-11-24 01:34:08,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:34:08,033 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 522 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:08,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1117 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:34:08,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-24 01:34:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 293. [2024-11-24 01:34:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 196 states have (on average 1.3673469387755102) internal successors, (268), 196 states have internal predecessors, (268), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:34:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 454 transitions. [2024-11-24 01:34:08,073 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 454 transitions. Word has length 198 [2024-11-24 01:34:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:08,074 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 454 transitions. [2024-11-24 01:34:08,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:34:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 454 transitions. [2024-11-24 01:34:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:34:08,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:08,077 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:08,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:34:08,077 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:08,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash -109385737, now seen corresponding path program 1 times [2024-11-24 01:34:08,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:08,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286521363] [2024-11-24 01:34:08,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:08,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:34:17,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286521363] [2024-11-24 01:34:17,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286521363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:17,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:17,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:34:17,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391645320] [2024-11-24 01:34:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:17,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:34:17,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:17,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:34:17,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:34:17,494 INFO L87 Difference]: Start difference. First operand 293 states and 454 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:34:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:25,800 INFO L93 Difference]: Finished difference Result 363 states and 533 transitions. [2024-11-24 01:34:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:34:25,801 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:34:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:25,803 INFO L225 Difference]: With dead ends: 363 [2024-11-24 01:34:25,804 INFO L226 Difference]: Without dead ends: 361 [2024-11-24 01:34:25,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=262, Invalid=668, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:34:25,805 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 369 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:25,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 957 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 01:34:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-24 01:34:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 303. [2024-11-24 01:34:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 206 states have (on average 1.3640776699029127) internal successors, (281), 206 states have internal predecessors, (281), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:34:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 467 transitions. [2024-11-24 01:34:25,849 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 467 transitions. Word has length 198 [2024-11-24 01:34:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:25,850 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 467 transitions. [2024-11-24 01:34:25,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:34:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 467 transitions. [2024-11-24 01:34:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-24 01:34:25,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:25,854 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:25,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:34:25,855 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:25,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 570672633, now seen corresponding path program 1 times [2024-11-24 01:34:25,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:25,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361474501] [2024-11-24 01:34:25,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:34:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361474501] [2024-11-24 01:34:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361474501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:34,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:34,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:34:34,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577928869] [2024-11-24 01:34:34,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:34,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:34:34,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:34,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:34:34,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:34:34,159 INFO L87 Difference]: Start difference. First operand 303 states and 467 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:34:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:41,500 INFO L93 Difference]: Finished difference Result 357 states and 527 transitions. [2024-11-24 01:34:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:34:41,501 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 198 [2024-11-24 01:34:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:41,504 INFO L225 Difference]: With dead ends: 357 [2024-11-24 01:34:41,504 INFO L226 Difference]: Without dead ends: 355 [2024-11-24 01:34:41,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-24 01:34:41,505 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 256 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:41,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1156 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 01:34:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-24 01:34:41,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 303. [2024-11-24 01:34:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 206 states have (on average 1.3640776699029127) internal successors, (281), 206 states have internal predecessors, (281), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:34:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 467 transitions. [2024-11-24 01:34:41,535 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 467 transitions. Word has length 198 [2024-11-24 01:34:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:41,536 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 467 transitions. [2024-11-24 01:34:41,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:34:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 467 transitions. [2024-11-24 01:34:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:34:41,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:41,539 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:41,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:34:41,539 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:41,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1840413906, now seen corresponding path program 1 times [2024-11-24 01:34:41,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:41,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440480940] [2024-11-24 01:34:41,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:41,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:34:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440480940] [2024-11-24 01:34:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440480940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:34:49,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:34:49,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:34:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453867473] [2024-11-24 01:34:49,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:34:49,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:34:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:34:49,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:34:49,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:34:49,095 INFO L87 Difference]: Start difference. First operand 303 states and 467 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:34:54,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:54,321 INFO L93 Difference]: Finished difference Result 345 states and 513 transitions. [2024-11-24 01:34:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:34:54,321 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 199 [2024-11-24 01:34:54,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:54,323 INFO L225 Difference]: With dead ends: 345 [2024-11-24 01:34:54,323 INFO L226 Difference]: Without dead ends: 343 [2024-11-24 01:34:54,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:34:54,325 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 474 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:54,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1294 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 01:34:54,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-24 01:34:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 300. [2024-11-24 01:34:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 203 states have (on average 1.3645320197044335) internal successors, (277), 203 states have internal predecessors, (277), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:34:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 463 transitions. [2024-11-24 01:34:54,353 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 463 transitions. Word has length 199 [2024-11-24 01:34:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:54,354 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 463 transitions. [2024-11-24 01:34:54,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:34:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 463 transitions. [2024-11-24 01:34:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:34:54,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:54,356 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:34:54,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:34:54,356 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:34:54,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash 959358423, now seen corresponding path program 1 times [2024-11-24 01:34:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:34:54,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567207578] [2024-11-24 01:34:54,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:35:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567207578] [2024-11-24 01:35:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567207578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:00,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:00,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:35:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903008505] [2024-11-24 01:35:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:00,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:35:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:00,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:35:00,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:35:00,084 INFO L87 Difference]: Start difference. First operand 300 states and 463 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:35:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:03,091 INFO L93 Difference]: Finished difference Result 358 states and 528 transitions. [2024-11-24 01:35:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:35:03,092 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:35:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:03,095 INFO L225 Difference]: With dead ends: 358 [2024-11-24 01:35:03,095 INFO L226 Difference]: Without dead ends: 356 [2024-11-24 01:35:03,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:35:03,096 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 294 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:03,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1179 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:35:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-24 01:35:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 305. [2024-11-24 01:35:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 208 states have (on average 1.3653846153846154) internal successors, (284), 208 states have internal predecessors, (284), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:35:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 470 transitions. [2024-11-24 01:35:03,126 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 470 transitions. Word has length 199 [2024-11-24 01:35:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:03,126 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 470 transitions. [2024-11-24 01:35:03,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:35:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 470 transitions. [2024-11-24 01:35:03,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:35:03,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:03,128 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:03,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:35:03,129 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:03,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1774605967, now seen corresponding path program 1 times [2024-11-24 01:35:03,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:03,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867694683] [2024-11-24 01:35:03,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:35:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867694683] [2024-11-24 01:35:08,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867694683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:08,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:08,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 01:35:08,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320897920] [2024-11-24 01:35:08,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:08,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 01:35:08,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:08,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 01:35:08,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:35:08,326 INFO L87 Difference]: Start difference. First operand 305 states and 470 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:35:12,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:12,164 INFO L93 Difference]: Finished difference Result 358 states and 528 transitions. [2024-11-24 01:35:12,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:35:12,166 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:35:12,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:12,168 INFO L225 Difference]: With dead ends: 358 [2024-11-24 01:35:12,168 INFO L226 Difference]: Without dead ends: 356 [2024-11-24 01:35:12,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=298, Invalid=758, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:35:12,170 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 365 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:12,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1038 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:35:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-24 01:35:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 306. [2024-11-24 01:35:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 209 states have (on average 1.3636363636363635) internal successors, (285), 209 states have internal predecessors, (285), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:35:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 471 transitions. [2024-11-24 01:35:12,206 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 471 transitions. Word has length 199 [2024-11-24 01:35:12,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:12,206 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 471 transitions. [2024-11-24 01:35:12,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:35:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 471 transitions. [2024-11-24 01:35:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:35:12,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:12,208 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:12,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:35:12,208 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:12,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash 566331413, now seen corresponding path program 1 times [2024-11-24 01:35:12,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:12,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304887826] [2024-11-24 01:35:12,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:12,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:35:23,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:23,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304887826] [2024-11-24 01:35:23,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304887826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:23,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:35:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919443096] [2024-11-24 01:35:23,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:23,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:35:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:23,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:35:23,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:35:23,620 INFO L87 Difference]: Start difference. First operand 306 states and 471 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:35:35,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:35,481 INFO L93 Difference]: Finished difference Result 354 states and 524 transitions. [2024-11-24 01:35:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:35:35,482 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:35:35,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:35,484 INFO L225 Difference]: With dead ends: 354 [2024-11-24 01:35:35,485 INFO L226 Difference]: Without dead ends: 352 [2024-11-24 01:35:35,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:35:35,486 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 281 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:35,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 980 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 01:35:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-24 01:35:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 306. [2024-11-24 01:35:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 209 states have (on average 1.3636363636363635) internal successors, (285), 209 states have internal predecessors, (285), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:35:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 471 transitions. [2024-11-24 01:35:35,514 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 471 transitions. Word has length 199 [2024-11-24 01:35:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:35,515 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 471 transitions. [2024-11-24 01:35:35,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:35:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 471 transitions. [2024-11-24 01:35:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:35:35,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:35,516 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:35,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:35:35,516 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:35,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2127334319, now seen corresponding path program 1 times [2024-11-24 01:35:35,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:35,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441767082] [2024-11-24 01:35:35,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:35:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:35:41,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441767082] [2024-11-24 01:35:41,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441767082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:35:41,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:35:41,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:35:41,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385010403] [2024-11-24 01:35:41,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:35:41,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:35:41,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:35:41,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:35:41,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:35:41,958 INFO L87 Difference]: Start difference. First operand 306 states and 471 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:35:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:46,427 INFO L93 Difference]: Finished difference Result 353 states and 522 transitions. [2024-11-24 01:35:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 01:35:46,427 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:35:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:46,429 INFO L225 Difference]: With dead ends: 353 [2024-11-24 01:35:46,429 INFO L226 Difference]: Without dead ends: 351 [2024-11-24 01:35:46,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=409, Invalid=1073, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:35:46,430 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 269 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:46,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1238 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 01:35:46,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-24 01:35:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 304. [2024-11-24 01:35:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 207 states have internal predecessors, (282), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:35:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 468 transitions. [2024-11-24 01:35:46,462 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 468 transitions. Word has length 199 [2024-11-24 01:35:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:46,462 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 468 transitions. [2024-11-24 01:35:46,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:35:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 468 transitions. [2024-11-24 01:35:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:35:46,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:46,464 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:35:46,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:35:46,464 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:35:46,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:46,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1872439518, now seen corresponding path program 1 times [2024-11-24 01:35:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:35:46,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063784694] [2024-11-24 01:35:46,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:46,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:35:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:36:02,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:02,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063784694] [2024-11-24 01:36:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063784694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:02,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:02,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 01:36:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123908738] [2024-11-24 01:36:02,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:02,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:36:02,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:02,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:36:02,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:36:02,487 INFO L87 Difference]: Start difference. First operand 304 states and 468 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:36:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:15,253 INFO L93 Difference]: Finished difference Result 361 states and 531 transitions. [2024-11-24 01:36:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:36:15,254 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:36:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:15,257 INFO L225 Difference]: With dead ends: 361 [2024-11-24 01:36:15,257 INFO L226 Difference]: Without dead ends: 359 [2024-11-24 01:36:15,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=318, Invalid=804, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:36:15,258 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 328 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:15,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 951 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 01:36:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-24 01:36:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 310. [2024-11-24 01:36:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 213 states have (on average 1.3615023474178405) internal successors, (290), 213 states have internal predecessors, (290), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:36:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 476 transitions. [2024-11-24 01:36:15,287 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 476 transitions. Word has length 199 [2024-11-24 01:36:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:15,288 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 476 transitions. [2024-11-24 01:36:15,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:36:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 476 transitions. [2024-11-24 01:36:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:36:15,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:15,290 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:15,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:36:15,290 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:15,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1192381148, now seen corresponding path program 1 times [2024-11-24 01:36:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206266187] [2024-11-24 01:36:15,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:36:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206266187] [2024-11-24 01:36:33,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206266187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:33,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:33,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:36:33,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925332887] [2024-11-24 01:36:33,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:33,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:36:33,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:33,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:36:33,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:36:33,164 INFO L87 Difference]: Start difference. First operand 310 states and 476 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:36:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:46,800 INFO L93 Difference]: Finished difference Result 355 states and 525 transitions. [2024-11-24 01:36:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:36:46,801 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2024-11-24 01:36:46,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:46,804 INFO L225 Difference]: With dead ends: 355 [2024-11-24 01:36:46,804 INFO L226 Difference]: Without dead ends: 353 [2024-11-24 01:36:46,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=341, Invalid=849, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:36:46,805 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 247 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:46,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1174 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 01:36:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-24 01:36:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 310. [2024-11-24 01:36:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 213 states have (on average 1.3615023474178405) internal successors, (290), 213 states have internal predecessors, (290), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:36:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 476 transitions. [2024-11-24 01:36:46,833 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 476 transitions. Word has length 199 [2024-11-24 01:36:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:46,833 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 476 transitions. [2024-11-24 01:36:46,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:36:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 476 transitions. [2024-11-24 01:36:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-24 01:36:46,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:46,835 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:46,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:36:46,836 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:46,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 877138845, now seen corresponding path program 1 times [2024-11-24 01:36:46,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:46,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583179400] [2024-11-24 01:36:46,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:36:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:36:59,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:36:59,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583179400] [2024-11-24 01:36:59,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583179400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:36:59,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:36:59,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:36:59,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820761423] [2024-11-24 01:36:59,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:36:59,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:36:59,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:59,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:36:59,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:36:59,754 INFO L87 Difference]: Start difference. First operand 310 states and 476 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:37:16,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:16,612 INFO L93 Difference]: Finished difference Result 362 states and 533 transitions. [2024-11-24 01:37:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:37:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2024-11-24 01:37:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:16,616 INFO L225 Difference]: With dead ends: 362 [2024-11-24 01:37:16,616 INFO L226 Difference]: Without dead ends: 360 [2024-11-24 01:37:16,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=354, Invalid=978, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:37:16,617 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 280 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:16,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1257 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-24 01:37:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-24 01:37:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 313. [2024-11-24 01:37:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 216 states have (on average 1.3611111111111112) internal successors, (294), 216 states have internal predecessors, (294), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:37:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 480 transitions. [2024-11-24 01:37:16,648 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 480 transitions. Word has length 200 [2024-11-24 01:37:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:16,648 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 480 transitions. [2024-11-24 01:37:16,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:37:16,649 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 480 transitions. [2024-11-24 01:37:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-24 01:37:16,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:16,650 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:16,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:37:16,651 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:16,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:16,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1578203423, now seen corresponding path program 1 times [2024-11-24 01:37:16,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:16,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446306005] [2024-11-24 01:37:16,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:16,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:37:27,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:27,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446306005] [2024-11-24 01:37:27,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446306005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:37:27,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:37:27,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 01:37:27,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13600965] [2024-11-24 01:37:27,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:37:27,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:37:27,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:27,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:37:27,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:37:27,014 INFO L87 Difference]: Start difference. First operand 313 states and 480 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:37:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:36,920 INFO L93 Difference]: Finished difference Result 352 states and 522 transitions. [2024-11-24 01:37:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:37:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2024-11-24 01:37:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:36,923 INFO L225 Difference]: With dead ends: 352 [2024-11-24 01:37:36,923 INFO L226 Difference]: Without dead ends: 350 [2024-11-24 01:37:36,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=356, Invalid=904, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:37:36,928 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 329 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:36,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1024 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 01:37:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-24 01:37:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 310. [2024-11-24 01:37:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 213 states have (on average 1.3615023474178405) internal successors, (290), 213 states have internal predecessors, (290), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:37:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 476 transitions. [2024-11-24 01:37:36,976 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 476 transitions. Word has length 200 [2024-11-24 01:37:36,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:36,976 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 476 transitions. [2024-11-24 01:37:36,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:37:36,977 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 476 transitions. [2024-11-24 01:37:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-24 01:37:36,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:36,978 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:36,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:37:36,979 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:36,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2139266060, now seen corresponding path program 1 times [2024-11-24 01:37:36,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:36,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033314669] [2024-11-24 01:37:36,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:36,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:37:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:52,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033314669] [2024-11-24 01:37:52,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033314669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:37:52,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:37:52,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:37:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284201451] [2024-11-24 01:37:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:37:52,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:37:52,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:52,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:37:52,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:37:52,976 INFO L87 Difference]: Start difference. First operand 310 states and 476 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-24 01:38:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:10,489 INFO L93 Difference]: Finished difference Result 356 states and 526 transitions. [2024-11-24 01:38:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:38:10,490 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 200 [2024-11-24 01:38:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:10,492 INFO L225 Difference]: With dead ends: 356 [2024-11-24 01:38:10,492 INFO L226 Difference]: Without dead ends: 354 [2024-11-24 01:38:10,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=375, Invalid=1031, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:38:10,493 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 334 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:10,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1252 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-24 01:38:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-24 01:38:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2024-11-24 01:38:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 215 states have (on average 1.3627906976744186) internal successors, (293), 215 states have internal predecessors, (293), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:38:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 479 transitions. [2024-11-24 01:38:10,523 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 479 transitions. Word has length 200 [2024-11-24 01:38:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:10,523 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 479 transitions. [2024-11-24 01:38:10,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 3 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2024-11-24 01:38:10,524 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 479 transitions. [2024-11-24 01:38:10,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-24 01:38:10,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:10,525 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:10,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:38:10,525 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:10,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:10,526 INFO L85 PathProgramCache]: Analyzing trace with hash -594698330, now seen corresponding path program 1 times [2024-11-24 01:38:10,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:10,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059670487] [2024-11-24 01:38:10,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:10,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:38:21,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:21,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059670487] [2024-11-24 01:38:21,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059670487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:21,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:38:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139943416] [2024-11-24 01:38:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:21,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:38:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:21,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:38:21,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:38:21,694 INFO L87 Difference]: Start difference. First operand 312 states and 479 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:38:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:38:33,876 INFO L93 Difference]: Finished difference Result 356 states and 526 transitions. [2024-11-24 01:38:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:38:33,877 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 200 [2024-11-24 01:38:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:38:33,879 INFO L225 Difference]: With dead ends: 356 [2024-11-24 01:38:33,879 INFO L226 Difference]: Without dead ends: 354 [2024-11-24 01:38:33,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=353, Invalid=979, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:38:33,883 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 262 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:38:33,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1336 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 01:38:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-24 01:38:33,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 313. [2024-11-24 01:38:33,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 216 states have (on average 1.3611111111111112) internal successors, (294), 216 states have internal predecessors, (294), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:38:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 480 transitions. [2024-11-24 01:38:33,912 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 480 transitions. Word has length 200 [2024-11-24 01:38:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:38:33,912 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 480 transitions. [2024-11-24 01:38:33,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:38:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 480 transitions. [2024-11-24 01:38:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-24 01:38:33,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:38:33,914 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:38:33,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:38:33,915 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:38:33,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:38:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1746239050, now seen corresponding path program 1 times [2024-11-24 01:38:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:38:33,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105814924] [2024-11-24 01:38:33,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:38:33,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:38:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:38:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:38:48,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:38:48,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105814924] [2024-11-24 01:38:48,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105814924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:38:48,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:38:48,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:38:48,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449688402] [2024-11-24 01:38:48,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:38:48,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:38:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:38:48,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:38:48,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:38:48,522 INFO L87 Difference]: Start difference. First operand 313 states and 480 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:39:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:03,592 INFO L93 Difference]: Finished difference Result 352 states and 522 transitions. [2024-11-24 01:39:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:39:03,594 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2024-11-24 01:39:03,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:03,596 INFO L225 Difference]: With dead ends: 352 [2024-11-24 01:39:03,596 INFO L226 Difference]: Without dead ends: 350 [2024-11-24 01:39:03,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=392, Invalid=940, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:39:03,599 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 218 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:03,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1093 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-24 01:39:03,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-24 01:39:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 313. [2024-11-24 01:39:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 216 states have (on average 1.3611111111111112) internal successors, (294), 216 states have internal predecessors, (294), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:39:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 480 transitions. [2024-11-24 01:39:03,622 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 480 transitions. Word has length 200 [2024-11-24 01:39:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:03,623 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 480 transitions. [2024-11-24 01:39:03,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:39:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 480 transitions. [2024-11-24 01:39:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-24 01:39:03,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:03,624 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:03,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:39:03,625 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:39:03,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash -987725340, now seen corresponding path program 1 times [2024-11-24 01:39:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:03,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530676068] [2024-11-24 01:39:03,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:39:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:39:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:39:15,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530676068] [2024-11-24 01:39:15,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530676068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:39:15,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:39:15,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-24 01:39:15,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833807543] [2024-11-24 01:39:15,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:39:15,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:39:15,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:15,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:39:15,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:39:15,169 INFO L87 Difference]: Start difference. First operand 313 states and 480 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:39:25,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:25,052 INFO L93 Difference]: Finished difference Result 346 states and 515 transitions. [2024-11-24 01:39:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 01:39:25,053 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2024-11-24 01:39:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:25,055 INFO L225 Difference]: With dead ends: 346 [2024-11-24 01:39:25,055 INFO L226 Difference]: Without dead ends: 344 [2024-11-24 01:39:25,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=393, Invalid=939, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:39:25,056 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 230 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:25,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1154 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 01:39:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-24 01:39:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 311. [2024-11-24 01:39:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 214 states have (on average 1.3598130841121496) internal successors, (291), 214 states have internal predecessors, (291), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:39:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 477 transitions. [2024-11-24 01:39:25,081 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 477 transitions. Word has length 200 [2024-11-24 01:39:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:25,081 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 477 transitions. [2024-11-24 01:39:25,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:39:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 477 transitions. [2024-11-24 01:39:25,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-24 01:39:25,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:25,083 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:25,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:39:25,083 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:39:25,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1200430072, now seen corresponding path program 1 times [2024-11-24 01:39:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55283041] [2024-11-24 01:39:25,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:39:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:39:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:39:40,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:40,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55283041] [2024-11-24 01:39:40,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55283041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:39:40,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:39:40,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 01:39:40,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969341043] [2024-11-24 01:39:40,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:39:40,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:39:40,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:40,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:39:40,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:39:40,751 INFO L87 Difference]: Start difference. First operand 311 states and 477 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:40:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:03,897 INFO L93 Difference]: Finished difference Result 355 states and 525 transitions. [2024-11-24 01:40:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:40:03,898 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 201 [2024-11-24 01:40:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:03,900 INFO L225 Difference]: With dead ends: 355 [2024-11-24 01:40:03,900 INFO L226 Difference]: Without dead ends: 353 [2024-11-24 01:40:03,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=386, Invalid=1096, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 01:40:03,901 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 296 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:03,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1315 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-24 01:40:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-24 01:40:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 311. [2024-11-24 01:40:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 214 states have (on average 1.3598130841121496) internal successors, (291), 214 states have internal predecessors, (291), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:40:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 477 transitions. [2024-11-24 01:40:03,926 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 477 transitions. Word has length 201 [2024-11-24 01:40:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:03,927 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 477 transitions. [2024-11-24 01:40:03,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:40:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 477 transitions. [2024-11-24 01:40:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-24 01:40:03,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:03,928 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:03,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:40:03,929 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:40:03,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash -499365494, now seen corresponding path program 1 times [2024-11-24 01:40:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:03,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7817066] [2024-11-24 01:40:03,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:03,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-24 01:40:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:20,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7817066] [2024-11-24 01:40:20,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7817066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:40:20,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:40:20,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-24 01:40:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938370402] [2024-11-24 01:40:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:40:20,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:40:20,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:20,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:40:20,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:40:20,710 INFO L87 Difference]: Start difference. First operand 311 states and 477 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:40:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:43,747 INFO L93 Difference]: Finished difference Result 345 states and 514 transitions. [2024-11-24 01:40:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:40:43,747 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 201 [2024-11-24 01:40:43,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:43,749 INFO L225 Difference]: With dead ends: 345 [2024-11-24 01:40:43,749 INFO L226 Difference]: Without dead ends: 343 [2024-11-24 01:40:43,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=424, Invalid=1136, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:40:43,750 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 336 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:43,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1190 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-24 01:40:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-24 01:40:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 303. [2024-11-24 01:40:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 206 states have (on average 1.3592233009708738) internal successors, (280), 206 states have internal predecessors, (280), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:40:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 466 transitions. [2024-11-24 01:40:43,773 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 466 transitions. Word has length 201 [2024-11-24 01:40:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:43,774 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 466 transitions. [2024-11-24 01:40:43,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-24 01:40:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 466 transitions. [2024-11-24 01:40:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-24 01:40:43,777 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:43,777 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:43,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 01:40:43,778 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:40:43,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash -704856996, now seen corresponding path program 1 times [2024-11-24 01:40:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164549070] [2024-11-24 01:40:43,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7620 trivial. 0 not checked. [2024-11-24 01:40:52,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:40:52,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164549070] [2024-11-24 01:40:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164549070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:40:52,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:40:52,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 01:40:52,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829644901] [2024-11-24 01:40:52,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:40:52,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:40:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:40:52,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:40:52,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:40:52,678 INFO L87 Difference]: Start difference. First operand 303 states and 466 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:40:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:56,248 INFO L93 Difference]: Finished difference Result 601 states and 901 transitions. [2024-11-24 01:40:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:40:56,249 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 391 [2024-11-24 01:40:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:56,252 INFO L225 Difference]: With dead ends: 601 [2024-11-24 01:40:56,252 INFO L226 Difference]: Without dead ends: 408 [2024-11-24 01:40:56,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:40:56,253 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 91 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:56,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1189 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 01:40:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-24 01:40:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 318. [2024-11-24 01:40:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 221 states have (on average 1.3619909502262444) internal successors, (301), 221 states have internal predecessors, (301), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:40:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 487 transitions. [2024-11-24 01:40:56,282 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 487 transitions. Word has length 391 [2024-11-24 01:40:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:56,283 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 487 transitions. [2024-11-24 01:40:56,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:40:56,283 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 487 transitions. [2024-11-24 01:40:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-24 01:40:56,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:56,286 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:40:56,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 01:40:56,287 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:40:56,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash 306260254, now seen corresponding path program 1 times [2024-11-24 01:40:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:40:56,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947638618] [2024-11-24 01:40:56,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:40:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7620 trivial. 0 not checked. [2024-11-24 01:41:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947638618] [2024-11-24 01:41:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947638618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:41:06,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:41:06,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 01:41:06,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714557234] [2024-11-24 01:41:06,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:41:06,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:41:06,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:06,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:41:06,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:41:06,149 INFO L87 Difference]: Start difference. First operand 318 states and 487 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:41:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:09,996 INFO L93 Difference]: Finished difference Result 609 states and 915 transitions. [2024-11-24 01:41:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:41:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 391 [2024-11-24 01:41:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:10,000 INFO L225 Difference]: With dead ends: 609 [2024-11-24 01:41:10,000 INFO L226 Difference]: Without dead ends: 398 [2024-11-24 01:41:10,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:41:10,002 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 84 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:10,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1194 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:41:10,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-24 01:41:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 314. [2024-11-24 01:41:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 217 states have (on average 1.359447004608295) internal successors, (295), 217 states have internal predecessors, (295), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:41:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 481 transitions. [2024-11-24 01:41:10,032 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 481 transitions. Word has length 391 [2024-11-24 01:41:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:10,033 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 481 transitions. [2024-11-24 01:41:10,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:41:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 481 transitions. [2024-11-24 01:41:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-24 01:41:10,036 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:10,037 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:10,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 01:41:10,037 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:10,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:10,038 INFO L85 PathProgramCache]: Analyzing trace with hash -322228464, now seen corresponding path program 1 times [2024-11-24 01:41:10,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:10,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13821401] [2024-11-24 01:41:10,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:10,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7620 trivial. 0 not checked. [2024-11-24 01:41:16,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:16,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13821401] [2024-11-24 01:41:16,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13821401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:41:16,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:41:16,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:41:16,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214567689] [2024-11-24 01:41:16,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:41:16,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:41:16,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:16,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:41:16,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:41:16,855 INFO L87 Difference]: Start difference. First operand 314 states and 481 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:41:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:18,136 INFO L93 Difference]: Finished difference Result 419 states and 610 transitions. [2024-11-24 01:41:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:41:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 392 [2024-11-24 01:41:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:18,139 INFO L225 Difference]: With dead ends: 419 [2024-11-24 01:41:18,139 INFO L226 Difference]: Without dead ends: 417 [2024-11-24 01:41:18,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:41:18,140 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 94 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:18,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 858 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:41:18,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-24 01:41:18,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 323. [2024-11-24 01:41:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 226 states have (on average 1.3628318584070795) internal successors, (308), 226 states have internal predecessors, (308), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:41:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 494 transitions. [2024-11-24 01:41:18,175 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 494 transitions. Word has length 392 [2024-11-24 01:41:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:18,175 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 494 transitions. [2024-11-24 01:41:18,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:41:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 494 transitions. [2024-11-24 01:41:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-24 01:41:18,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:18,182 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:18,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 01:41:18,182 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:18,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1240621484, now seen corresponding path program 1 times [2024-11-24 01:41:18,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:18,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224571499] [2024-11-24 01:41:18,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-24 01:41:30,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224571499] [2024-11-24 01:41:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224571499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:41:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034327878] [2024-11-24 01:41:30,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:30,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:41:30,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:41:30,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:41:30,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:41:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:30,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:41:30,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:41:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 4063 proven. 72 refuted. 0 times theorem prover too weak. 3498 trivial. 0 not checked. [2024-11-24 01:41:32,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:41:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 172 proven. 72 refuted. 0 times theorem prover too weak. 7389 trivial. 0 not checked. [2024-11-24 01:41:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034327878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:41:32,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:41:32,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 7] total 27 [2024-11-24 01:41:32,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930831273] [2024-11-24 01:41:32,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:41:32,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 01:41:32,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:32,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 01:41:32,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:41:32,899 INFO L87 Difference]: Start difference. First operand 323 states and 494 transitions. Second operand has 27 states, 27 states have (on average 6.481481481481482) internal successors, (175), 27 states have internal predecessors, (175), 7 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 7 states have call predecessors, (116), 7 states have call successors, (116) [2024-11-24 01:41:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:40,053 INFO L93 Difference]: Finished difference Result 872 states and 1298 transitions. [2024-11-24 01:41:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-24 01:41:40,053 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.481481481481482) internal successors, (175), 27 states have internal predecessors, (175), 7 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 7 states have call predecessors, (116), 7 states have call successors, (116) Word has length 392 [2024-11-24 01:41:40,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:40,055 INFO L225 Difference]: With dead ends: 872 [2024-11-24 01:41:40,055 INFO L226 Difference]: Without dead ends: 645 [2024-11-24 01:41:40,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 781 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=447, Invalid=2003, Unknown=0, NotChecked=0, Total=2450 [2024-11-24 01:41:40,057 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 691 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:40,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1796 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 01:41:40,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-11-24 01:41:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 324. [2024-11-24 01:41:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 224 states have (on average 1.3348214285714286) internal successors, (299), 224 states have internal predecessors, (299), 93 states have call successors, (93), 6 states have call predecessors, (93), 6 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:41:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 485 transitions. [2024-11-24 01:41:40,119 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 485 transitions. Word has length 392 [2024-11-24 01:41:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:40,120 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 485 transitions. [2024-11-24 01:41:40,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.481481481481482) internal successors, (175), 27 states have internal predecessors, (175), 7 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 7 states have call predecessors, (116), 7 states have call successors, (116) [2024-11-24 01:41:40,120 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 485 transitions. [2024-11-24 01:41:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-24 01:41:40,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:40,124 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:40,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:41:40,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:41:40,325 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:40,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash 796498761, now seen corresponding path program 1 times [2024-11-24 01:41:40,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:40,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926907608] [2024-11-24 01:41:40,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:40,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7620 trivial. 0 not checked. [2024-11-24 01:41:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926907608] [2024-11-24 01:41:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926907608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:41:48,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:41:48,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:41:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576329824] [2024-11-24 01:41:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:41:48,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:41:48,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:48,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:41:48,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:41:48,614 INFO L87 Difference]: Start difference. First operand 324 states and 485 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:41:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:51,796 INFO L93 Difference]: Finished difference Result 416 states and 592 transitions. [2024-11-24 01:41:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:41:51,798 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 392 [2024-11-24 01:41:51,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:51,800 INFO L225 Difference]: With dead ends: 416 [2024-11-24 01:41:51,800 INFO L226 Difference]: Without dead ends: 414 [2024-11-24 01:41:51,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:41:51,802 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 83 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:51,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1106 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 01:41:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-24 01:41:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 331. [2024-11-24 01:41:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 231 states have (on average 1.3333333333333333) internal successors, (308), 231 states have internal predecessors, (308), 93 states have call successors, (93), 6 states have call predecessors, (93), 6 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:41:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 494 transitions. [2024-11-24 01:41:51,847 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 494 transitions. Word has length 392 [2024-11-24 01:41:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:51,847 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 494 transitions. [2024-11-24 01:41:51,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:41:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 494 transitions. [2024-11-24 01:41:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-24 01:41:51,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:51,852 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:51,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-24 01:41:51,852 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:51,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1476557131, now seen corresponding path program 1 times [2024-11-24 01:41:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:51,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337121269] [2024-11-24 01:41:51,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:51,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7620 trivial. 0 not checked. [2024-11-24 01:41:59,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:59,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337121269] [2024-11-24 01:41:59,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337121269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:41:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:41:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 01:41:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001433123] [2024-11-24 01:41:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:41:59,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:41:59,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:59,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:41:59,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:41:59,459 INFO L87 Difference]: Start difference. First operand 331 states and 494 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:42:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:03,689 INFO L93 Difference]: Finished difference Result 400 states and 575 transitions. [2024-11-24 01:42:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:42:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 392 [2024-11-24 01:42:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:03,691 INFO L225 Difference]: With dead ends: 400 [2024-11-24 01:42:03,691 INFO L226 Difference]: Without dead ends: 398 [2024-11-24 01:42:03,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:42:03,692 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 91 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:03,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1091 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:42:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-24 01:42:03,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 331. [2024-11-24 01:42:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 231 states have (on average 1.3333333333333333) internal successors, (308), 231 states have internal predecessors, (308), 93 states have call successors, (93), 6 states have call predecessors, (93), 6 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:42:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 494 transitions. [2024-11-24 01:42:03,737 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 494 transitions. Word has length 392 [2024-11-24 01:42:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:03,738 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 494 transitions. [2024-11-24 01:42:03,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:42:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 494 transitions. [2024-11-24 01:42:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-24 01:42:03,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:03,741 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:03,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 01:42:03,742 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:03,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2082895369, now seen corresponding path program 1 times [2024-11-24 01:42:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573992747] [2024-11-24 01:42:03,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:03,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7620 trivial. 0 not checked. [2024-11-24 01:42:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573992747] [2024-11-24 01:42:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573992747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:11,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:11,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:42:11,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538549084] [2024-11-24 01:42:11,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:11,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:42:11,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:11,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:42:11,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:42:11,510 INFO L87 Difference]: Start difference. First operand 331 states and 494 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:42:14,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:14,904 INFO L93 Difference]: Finished difference Result 653 states and 947 transitions. [2024-11-24 01:42:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:42:14,906 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 392 [2024-11-24 01:42:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:14,908 INFO L225 Difference]: With dead ends: 653 [2024-11-24 01:42:14,908 INFO L226 Difference]: Without dead ends: 421 [2024-11-24 01:42:14,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:42:14,910 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 106 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:14,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 843 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:42:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-24 01:42:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 333. [2024-11-24 01:42:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 233 states have (on average 1.3390557939914163) internal successors, (312), 233 states have internal predecessors, (312), 93 states have call successors, (93), 6 states have call predecessors, (93), 6 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-24 01:42:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 498 transitions. [2024-11-24 01:42:14,957 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 498 transitions. Word has length 392 [2024-11-24 01:42:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:14,961 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 498 transitions. [2024-11-24 01:42:14,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-24 01:42:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 498 transitions. [2024-11-24 01:42:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-24 01:42:14,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:14,965 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:14,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-24 01:42:14,965 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:14,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1824729931, now seen corresponding path program 1 times [2024-11-24 01:42:14,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:14,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476634183] [2024-11-24 01:42:14,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:14,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-24 01:42:15,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:15,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476634183] [2024-11-24 01:42:15,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476634183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:42:15,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:42:15,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:42:15,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540291620] [2024-11-24 01:42:15,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:42:15,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:42:15,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:42:15,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:42:15,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:42:15,642 INFO L87 Difference]: Start difference. First operand 333 states and 498 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-24 01:42:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:42:15,992 INFO L93 Difference]: Finished difference Result 839 states and 1237 transitions. [2024-11-24 01:42:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:42:15,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 392 [2024-11-24 01:42:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:42:15,996 INFO L225 Difference]: With dead ends: 839 [2024-11-24 01:42:15,997 INFO L226 Difference]: Without dead ends: 605 [2024-11-24 01:42:15,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:42:15,998 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 296 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:42:15,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 833 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:42:15,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-24 01:42:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 462. [2024-11-24 01:42:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 329 states have (on average 1.3404255319148937) internal successors, (441), 329 states have internal predecessors, (441), 124 states have call successors, (124), 8 states have call predecessors, (124), 8 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 01:42:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 689 transitions. [2024-11-24 01:42:16,065 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 689 transitions. Word has length 392 [2024-11-24 01:42:16,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:42:16,066 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 689 transitions. [2024-11-24 01:42:16,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-24 01:42:16,066 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 689 transitions. [2024-11-24 01:42:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-24 01:42:16,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:16,069 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:16,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-24 01:42:16,070 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:42:16,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash 957635214, now seen corresponding path program 1 times [2024-11-24 01:42:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:16,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4407614] [2024-11-24 01:42:16,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7633 backedges. 5 proven. 64 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-24 01:42:29,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:42:29,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4407614] [2024-11-24 01:42:29,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4407614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:42:29,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259137375] [2024-11-24 01:42:29,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:29,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:29,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:29,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:29,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11f350a8-8c7f-4a1d-afa0-a64ae65cb089/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:42:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:42:29,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-24 01:42:29,763 INFO L279 TraceCheckSpWp]: Computing forward predicates...