./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/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_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/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_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/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 acffbf4568185b4df73fbdfca312807b0d1acfe4982bda3fcfc32319476145af --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:23:15,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:23:15,165 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:23:15,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:23:15,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:23:15,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:23:15,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:23:15,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:23:15,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:23:15,198 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:23:15,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:23:15,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:23:15,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:23:15,199 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:23:15,200 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:23:15,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:23:15,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:23:15,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:23:15,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:23:15,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:23:15,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:23:15,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:23:15,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:23:15,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:23:15,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:23:15,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:23:15,202 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:23:15,202 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:23:15,202 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:23:15,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:23:15,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:23:15,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:23:15,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:23:15,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:23:15,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:23:15,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:23:15,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:23:15,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:23:15,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:23:15,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:23:15,204 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:23:15,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:23:15,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:23:15,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:23:15,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:23:15,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:23:15,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:23:15,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:23:15,206 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_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/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 -> acffbf4568185b4df73fbdfca312807b0d1acfe4982bda3fcfc32319476145af [2024-11-23 23:23:15,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:23:15,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:23:15,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:23:15,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:23:15,519 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:23:15,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i [2024-11-23 23:23:18,536 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/data/cec97565c/6f8076558efb4a99852c8a4073b9af81/FLAG5dbbaf554 [2024-11-23 23:23:18,862 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:23:18,863 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i [2024-11-23 23:23:18,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/data/cec97565c/6f8076558efb4a99852c8a4073b9af81/FLAG5dbbaf554 [2024-11-23 23:23:18,901 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/data/cec97565c/6f8076558efb4a99852c8a4073b9af81 [2024-11-23 23:23:18,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:23:18,906 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:23:18,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:23:18,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:23:18,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:23:18,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:23:18" (1/1) ... [2024-11-23 23:23:18,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5998c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:18, skipping insertion in model container [2024-11-23 23:23:18,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:23:18" (1/1) ... [2024-11-23 23:23:18,949 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:23:19,146 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_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i[919,932] [2024-11-23 23:23:19,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:23:19,297 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:23:19,312 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_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i[919,932] [2024-11-23 23:23:19,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:23:19,411 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:23:19,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19 WrapperNode [2024-11-23 23:23:19,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:23:19,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:23:19,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:23:19,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:23:19,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,517 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 317 [2024-11-23 23:23:19,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:23:19,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:23:19,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:23:19,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:23:19,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,583 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:23:19,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,611 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:23:19,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:23:19,650 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:23:19,650 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:23:19,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (1/1) ... [2024-11-23 23:23:19,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:23:19,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:23:19,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:23:19,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:23:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:23:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:23:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:23:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:23:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:23:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:23:19,862 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:23:19,865 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:23:20,747 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-23 23:23:20,747 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:23:20,759 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:23:20,760 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:23:20,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:23:20 BoogieIcfgContainer [2024-11-23 23:23:20,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:23:20,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:23:20,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:23:20,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:23:20,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:23:18" (1/3) ... [2024-11-23 23:23:20,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f91e8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:23:20, skipping insertion in model container [2024-11-23 23:23:20,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:23:19" (2/3) ... [2024-11-23 23:23:20,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f91e8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:23:20, skipping insertion in model container [2024-11-23 23:23:20,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:23:20" (3/3) ... [2024-11-23 23:23:20,772 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i [2024-11-23 23:23:20,790 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:23:20,793 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-10.i that has 2 procedures, 138 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:23:20,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:23:20,888 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;@2c7b2a0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:23:20,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:23:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 94 states have internal predecessors, (133), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-23 23:23:20,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-23 23:23:20,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:20,915 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:20,915 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:20,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash -863788020, now seen corresponding path program 1 times [2024-11-23 23:23:20,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:20,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842269930] [2024-11-23 23:23:20,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:20,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-11-23 23:23:21,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:21,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842269930] [2024-11-23 23:23:21,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842269930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:23:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388910025] [2024-11-23 23:23:21,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:21,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:23:21,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:23:21,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:23:21,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:23:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:21,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:23:21,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:23:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-11-23 23:23:21,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:23:21,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388910025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:21,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:23:21,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:23:21,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022944541] [2024-11-23 23:23:21,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:21,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:23:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:21,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:23:21,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:23:21,923 INFO L87 Difference]: Start difference. First operand has 138 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 94 states have internal predecessors, (133), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:23:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:21,975 INFO L93 Difference]: Finished difference Result 269 states and 470 transitions. [2024-11-23 23:23:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:23:21,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 262 [2024-11-23 23:23:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:21,988 INFO L225 Difference]: With dead ends: 269 [2024-11-23 23:23:21,988 INFO L226 Difference]: Without dead ends: 134 [2024-11-23 23:23:21,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:23:22,000 INFO L435 NwaCegarLoop]: 210 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, 210 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:22,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:23:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-23 23:23:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-23 23:23:22,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 90 states have (on average 1.4) internal successors, (126), 90 states have internal predecessors, (126), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-23 23:23:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 210 transitions. [2024-11-23 23:23:22,062 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 210 transitions. Word has length 262 [2024-11-23 23:23:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:22,064 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 210 transitions. [2024-11-23 23:23:22,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:23:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 210 transitions. [2024-11-23 23:23:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-23 23:23:22,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:22,070 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:22,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:23:22,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd969eff-f8c6-457f-b4d2-fb6c267dd63e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:23:22,271 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:22,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash -798866748, now seen corresponding path program 1 times [2024-11-23 23:23:22,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:22,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888904529] [2024-11-23 23:23:22,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:22,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:23:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888904529] [2024-11-23 23:23:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888904529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:23:23,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:23:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:23:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011186093] [2024-11-23 23:23:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:23:23,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:23:23,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:23,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:23:23,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:23:23,400 INFO L87 Difference]: Start difference. First operand 134 states and 210 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:23:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:23,847 INFO L93 Difference]: Finished difference Result 397 states and 625 transitions. [2024-11-23 23:23:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:23:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 262 [2024-11-23 23:23:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:23,854 INFO L225 Difference]: With dead ends: 397 [2024-11-23 23:23:23,854 INFO L226 Difference]: Without dead ends: 266 [2024-11-23 23:23:23,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:23:23,856 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 130 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:23,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 601 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:23:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-23 23:23:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 206. [2024-11-23 23:23:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 119 states have (on average 1.3025210084033614) internal successors, (155), 119 states have internal predecessors, (155), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 23:23:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 323 transitions. [2024-11-23 23:23:23,940 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 323 transitions. Word has length 262 [2024-11-23 23:23:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:23,941 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 323 transitions. [2024-11-23 23:23:23,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:23:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 323 transitions. [2024-11-23 23:23:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-23 23:23:23,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:23,946 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:23,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:23:23,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:23,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1039366279, now seen corresponding path program 1 times [2024-11-23 23:23:23,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:23,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661588459] [2024-11-23 23:23:23,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:23,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:24:39,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661588459] [2024-11-23 23:24:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661588459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:39,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:39,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:24:39,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70127548] [2024-11-23 23:24:39,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:39,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:24:39,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:39,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:24:39,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:24:39,908 INFO L87 Difference]: Start difference. First operand 206 states and 323 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:24:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:45,657 INFO L93 Difference]: Finished difference Result 649 states and 1000 transitions. [2024-11-23 23:24:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:24:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 263 [2024-11-23 23:24:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:45,663 INFO L225 Difference]: With dead ends: 649 [2024-11-23 23:24:45,663 INFO L226 Difference]: Without dead ends: 518 [2024-11-23 23:24:45,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:24:45,667 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 1156 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:45,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1729 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-23 23:24:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-23 23:24:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 398. [2024-11-23 23:24:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 263 states have (on average 1.349809885931559) internal successors, (355), 264 states have internal predecessors, (355), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-23 23:24:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 607 transitions. [2024-11-23 23:24:45,763 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 607 transitions. Word has length 263 [2024-11-23 23:24:45,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:45,765 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 607 transitions. [2024-11-23 23:24:45,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:24:45,765 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 607 transitions. [2024-11-23 23:24:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-23 23:24:45,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:45,774 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:45,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:24:45,774 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:45,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash -954778427, now seen corresponding path program 1 times [2024-11-23 23:24:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566168038] [2024-11-23 23:24:45,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:27:16,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:16,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566168038] [2024-11-23 23:27:16,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566168038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:16,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:16,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 23:27:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175663991] [2024-11-23 23:27:16,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:16,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:27:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:16,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:27:16,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:27:16,678 INFO L87 Difference]: Start difference. First operand 398 states and 607 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:27:22,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:22,720 INFO L93 Difference]: Finished difference Result 731 states and 1110 transitions. [2024-11-23 23:27:22,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:27:22,720 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-23 23:27:22,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:22,726 INFO L225 Difference]: With dead ends: 731 [2024-11-23 23:27:22,726 INFO L226 Difference]: Without dead ends: 590 [2024-11-23 23:27:22,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:27:22,728 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 1184 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:22,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1798 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-23 23:27:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-23 23:27:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 404. [2024-11-23 23:27:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 269 states have (on average 1.3494423791821561) internal successors, (363), 270 states have internal predecessors, (363), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-23 23:27:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 615 transitions. [2024-11-23 23:27:22,785 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 615 transitions. Word has length 263 [2024-11-23 23:27:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:22,786 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 615 transitions. [2024-11-23 23:27:22,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:27:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 615 transitions. [2024-11-23 23:27:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-23 23:27:22,790 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:22,790 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:22,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:27:22,791 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:22,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1446531655, now seen corresponding path program 1 times [2024-11-23 23:27:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:22,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126298234] [2024-11-23 23:27:22,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:28:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126298234] [2024-11-23 23:28:23,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126298234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:23,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:23,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:28:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795317238] [2024-11-23 23:28:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:23,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:28:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:23,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:28:23,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:28:23,652 INFO L87 Difference]: Start difference. First operand 404 states and 615 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:28:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:26,780 INFO L93 Difference]: Finished difference Result 709 states and 1077 transitions. [2024-11-23 23:28:26,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:28:26,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-23 23:28:26,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:26,785 INFO L225 Difference]: With dead ends: 709 [2024-11-23 23:28:26,785 INFO L226 Difference]: Without dead ends: 578 [2024-11-23 23:28:26,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:28:26,787 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 585 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:26,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1489 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:28:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-23 23:28:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 405. [2024-11-23 23:28:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 270 states have (on average 1.3518518518518519) internal successors, (365), 271 states have internal predecessors, (365), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-23 23:28:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 617 transitions. [2024-11-23 23:28:26,844 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 617 transitions. Word has length 263 [2024-11-23 23:28:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:26,845 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 617 transitions. [2024-11-23 23:28:26,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:28:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 617 transitions. [2024-11-23 23:28:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-23 23:28:26,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:26,852 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:26,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:28:26,853 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:26,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1568571963, now seen corresponding path program 1 times [2024-11-23 23:28:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:26,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883313491] [2024-11-23 23:28:26,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:26,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:28:44,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:44,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883313491] [2024-11-23 23:28:44,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883313491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:44,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:44,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:28:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603991399] [2024-11-23 23:28:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:44,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:28:44,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:44,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:28:44,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:28:44,984 INFO L87 Difference]: Start difference. First operand 405 states and 617 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:28:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:49,906 INFO L93 Difference]: Finished difference Result 711 states and 1080 transitions. [2024-11-23 23:28:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:28:49,907 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-23 23:28:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:49,913 INFO L225 Difference]: With dead ends: 711 [2024-11-23 23:28:49,913 INFO L226 Difference]: Without dead ends: 580 [2024-11-23 23:28:49,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:28:49,918 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 933 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:49,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1544 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:28:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-23 23:28:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 404. [2024-11-23 23:28:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 269 states have (on average 1.3494423791821561) internal successors, (363), 270 states have internal predecessors, (363), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-23 23:28:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 615 transitions. [2024-11-23 23:28:49,986 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 615 transitions. Word has length 263 [2024-11-23 23:28:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:49,987 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 615 transitions. [2024-11-23 23:28:49,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:28:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 615 transitions. [2024-11-23 23:28:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-23 23:28:49,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:49,995 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:49,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:28:49,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:49,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash 679421897, now seen corresponding path program 1 times [2024-11-23 23:28:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385344381] [2024-11-23 23:28:49,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:29:02,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:02,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385344381] [2024-11-23 23:29:02,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385344381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:02,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:02,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:29:02,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036976275] [2024-11-23 23:29:02,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:02,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:29:02,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:02,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:29:02,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:29:02,169 INFO L87 Difference]: Start difference. First operand 404 states and 615 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:29:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:04,003 INFO L93 Difference]: Finished difference Result 890 states and 1352 transitions. [2024-11-23 23:29:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:29:04,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 263 [2024-11-23 23:29:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:04,010 INFO L225 Difference]: With dead ends: 890 [2024-11-23 23:29:04,010 INFO L226 Difference]: Without dead ends: 567 [2024-11-23 23:29:04,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:29:04,013 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 878 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:04,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1277 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:29:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-23 23:29:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 432. [2024-11-23 23:29:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 297 states have (on average 1.3703703703703705) internal successors, (407), 298 states have internal predecessors, (407), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-23 23:29:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 659 transitions. [2024-11-23 23:29:04,087 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 659 transitions. Word has length 263 [2024-11-23 23:29:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:04,087 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 659 transitions. [2024-11-23 23:29:04,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:29:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 659 transitions. [2024-11-23 23:29:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-23 23:29:04,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:04,090 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:04,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:29:04,091 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:04,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 905352773, now seen corresponding path program 1 times [2024-11-23 23:29:04,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233133799] [2024-11-23 23:29:04,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:29:18,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:18,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233133799] [2024-11-23 23:29:18,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233133799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:18,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:18,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:29:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018826969] [2024-11-23 23:29:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:18,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:29:18,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:18,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:29:18,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:29:18,284 INFO L87 Difference]: Start difference. First operand 432 states and 659 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:29:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:19,826 INFO L93 Difference]: Finished difference Result 771 states and 1192 transitions. [2024-11-23 23:29:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:29:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-23 23:29:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:19,830 INFO L225 Difference]: With dead ends: 771 [2024-11-23 23:29:19,830 INFO L226 Difference]: Without dead ends: 640 [2024-11-23 23:29:19,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:29:19,832 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 332 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:19,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1171 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:29:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-23 23:29:19,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 558. [2024-11-23 23:29:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 380 states have (on average 1.3657894736842104) internal successors, (519), 381 states have internal predecessors, (519), 168 states have call successors, (168), 9 states have call predecessors, (168), 9 states have return successors, (168), 167 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-23 23:29:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 855 transitions. [2024-11-23 23:29:19,880 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 855 transitions. Word has length 263 [2024-11-23 23:29:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:19,882 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 855 transitions. [2024-11-23 23:29:19,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:29:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 855 transitions. [2024-11-23 23:29:19,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-23 23:29:19,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:19,886 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:19,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:29:19,888 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:19,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 545408391, now seen corresponding path program 1 times [2024-11-23 23:29:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104131995] [2024-11-23 23:29:19,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:19,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:29:37,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:37,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104131995] [2024-11-23 23:29:37,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104131995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:37,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:37,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:29:37,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420433638] [2024-11-23 23:29:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:37,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:29:37,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:37,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:29:37,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:29:37,013 INFO L87 Difference]: Start difference. First operand 558 states and 855 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:29:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:39,178 INFO L93 Difference]: Finished difference Result 934 states and 1426 transitions. [2024-11-23 23:29:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:29:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 263 [2024-11-23 23:29:39,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:39,184 INFO L225 Difference]: With dead ends: 934 [2024-11-23 23:29:39,184 INFO L226 Difference]: Without dead ends: 637 [2024-11-23 23:29:39,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:29:39,187 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 391 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:39,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1300 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:29:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-23 23:29:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 590. [2024-11-23 23:29:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 411 states have (on average 1.3771289537712896) internal successors, (566), 412 states have internal predecessors, (566), 168 states have call successors, (168), 10 states have call predecessors, (168), 10 states have return successors, (168), 167 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-23 23:29:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 902 transitions. [2024-11-23 23:29:39,240 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 902 transitions. Word has length 263 [2024-11-23 23:29:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:39,241 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 902 transitions. [2024-11-23 23:29:39,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:29:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 902 transitions. [2024-11-23 23:29:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:29:39,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:39,244 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:39,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:29:39,244 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:39,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash -386423847, now seen corresponding path program 1 times [2024-11-23 23:29:39,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:39,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673155988] [2024-11-23 23:29:39,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:39,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:30:19,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:19,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673155988] [2024-11-23 23:30:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673155988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:19,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:30:19,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-23 23:30:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825079508] [2024-11-23 23:30:19,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:19,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 23:30:19,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:19,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 23:30:19,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:30:19,482 INFO L87 Difference]: Start difference. First operand 590 states and 902 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:30:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:28,630 INFO L93 Difference]: Finished difference Result 1193 states and 1797 transitions. [2024-11-23 23:30:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:30:28,630 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 264 [2024-11-23 23:30:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:28,639 INFO L225 Difference]: With dead ends: 1193 [2024-11-23 23:30:28,639 INFO L226 Difference]: Without dead ends: 1062 [2024-11-23 23:30:28,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 23:30:28,641 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 2191 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:28,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 1910 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 23:30:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2024-11-23 23:30:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 599. [2024-11-23 23:30:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 420 states have (on average 1.380952380952381) internal successors, (580), 421 states have internal predecessors, (580), 168 states have call successors, (168), 10 states have call predecessors, (168), 10 states have return successors, (168), 167 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-23 23:30:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 916 transitions. [2024-11-23 23:30:28,709 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 916 transitions. Word has length 264 [2024-11-23 23:30:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:28,710 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 916 transitions. [2024-11-23 23:30:28,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:30:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 916 transitions. [2024-11-23 23:30:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:30:28,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:28,713 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:28,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:30:28,713 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:28,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash -973229861, now seen corresponding path program 1 times [2024-11-23 23:30:28,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:28,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041984432] [2024-11-23 23:30:28,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:28,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:30:29,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:29,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041984432] [2024-11-23 23:30:29,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041984432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:29,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:30:29,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:30:29,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619722053] [2024-11-23 23:30:29,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:29,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:30:29,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:29,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:30:29,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:30:29,002 INFO L87 Difference]: Start difference. First operand 599 states and 916 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:30:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:29,146 INFO L93 Difference]: Finished difference Result 1362 states and 2087 transitions. [2024-11-23 23:30:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:30:29,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-11-23 23:30:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:29,152 INFO L225 Difference]: With dead ends: 1362 [2024-11-23 23:30:29,152 INFO L226 Difference]: Without dead ends: 844 [2024-11-23 23:30:29,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:30:29,155 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 163 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:29,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 699 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:30:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-23 23:30:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 629. [2024-11-23 23:30:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 492 states have (on average 1.4369918699186992) internal successors, (707), 493 states have internal predecessors, (707), 128 states have call successors, (128), 8 states have call predecessors, (128), 8 states have return successors, (128), 127 states have call predecessors, (128), 128 states have call successors, (128) [2024-11-23 23:30:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 963 transitions. [2024-11-23 23:30:29,209 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 963 transitions. Word has length 264 [2024-11-23 23:30:29,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:29,209 INFO L471 AbstractCegarLoop]: Abstraction has 629 states and 963 transitions. [2024-11-23 23:30:29,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:30:29,210 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 963 transitions. [2024-11-23 23:30:29,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:30:29,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:29,212 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:29,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:30:29,212 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:29,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:29,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1039744663, now seen corresponding path program 1 times [2024-11-23 23:30:29,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:29,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028225989] [2024-11-23 23:30:29,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:29,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:31:29,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028225989] [2024-11-23 23:31:29,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028225989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:29,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:29,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-23 23:31:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518559970] [2024-11-23 23:31:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:29,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:31:29,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:29,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:31:29,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:31:29,482 INFO L87 Difference]: Start difference. First operand 629 states and 963 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:31:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:37,070 INFO L93 Difference]: Finished difference Result 1485 states and 2254 transitions. [2024-11-23 23:31:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 23:31:37,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 264 [2024-11-23 23:31:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:37,077 INFO L225 Difference]: With dead ends: 1485 [2024-11-23 23:31:37,077 INFO L226 Difference]: Without dead ends: 1290 [2024-11-23 23:31:37,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 23:31:37,080 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 2029 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:37,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 1760 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 23:31:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2024-11-23 23:31:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 737. [2024-11-23 23:31:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 552 states have (on average 1.4076086956521738) internal successors, (777), 553 states have internal predecessors, (777), 170 states have call successors, (170), 14 states have call predecessors, (170), 14 states have return successors, (170), 169 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-23 23:31:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1117 transitions. [2024-11-23 23:31:37,151 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1117 transitions. Word has length 264 [2024-11-23 23:31:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:37,151 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1117 transitions. [2024-11-23 23:31:37,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:31:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1117 transitions. [2024-11-23 23:31:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:31:37,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:37,154 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:37,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:31:37,154 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:37,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2060813017, now seen corresponding path program 1 times [2024-11-23 23:31:37,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:37,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569269875] [2024-11-23 23:31:37,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:37,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:31:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569269875] [2024-11-23 23:31:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569269875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:55,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:31:55,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695258352] [2024-11-23 23:31:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:55,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:31:55,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:55,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:31:55,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:31:55,291 INFO L87 Difference]: Start difference. First operand 737 states and 1117 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:31:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:57,227 INFO L93 Difference]: Finished difference Result 1374 states and 2083 transitions. [2024-11-23 23:31:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:31:57,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-11-23 23:31:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:57,234 INFO L225 Difference]: With dead ends: 1374 [2024-11-23 23:31:57,234 INFO L226 Difference]: Without dead ends: 1179 [2024-11-23 23:31:57,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:31:57,236 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 466 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:57,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1324 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:31:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2024-11-23 23:31:57,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 745. [2024-11-23 23:31:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 560 states have (on average 1.4089285714285715) internal successors, (789), 561 states have internal predecessors, (789), 170 states have call successors, (170), 14 states have call predecessors, (170), 14 states have return successors, (170), 169 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-23 23:31:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1129 transitions. [2024-11-23 23:31:57,304 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1129 transitions. Word has length 264 [2024-11-23 23:31:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:57,306 INFO L471 AbstractCegarLoop]: Abstraction has 745 states and 1129 transitions. [2024-11-23 23:31:57,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:31:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1129 transitions. [2024-11-23 23:31:57,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:31:57,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:57,308 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:57,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:31:57,309 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:57,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2075367589, now seen corresponding path program 1 times [2024-11-23 23:31:57,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:57,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839466482] [2024-11-23 23:31:57,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:31:57,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:57,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839466482] [2024-11-23 23:31:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839466482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:57,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:57,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:31:57,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540458213] [2024-11-23 23:31:57,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:57,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:31:57,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:57,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:31:57,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:31:57,561 INFO L87 Difference]: Start difference. First operand 745 states and 1129 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:31:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:57,675 INFO L93 Difference]: Finished difference Result 1652 states and 2502 transitions. [2024-11-23 23:31:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:31:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-11-23 23:31:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:57,680 INFO L225 Difference]: With dead ends: 1652 [2024-11-23 23:31:57,680 INFO L226 Difference]: Without dead ends: 1026 [2024-11-23 23:31:57,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:31:57,682 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 84 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:57,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 762 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:31:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-23 23:31:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1010. [2024-11-23 23:31:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 805 states have (on average 1.4260869565217391) internal successors, (1148), 810 states have internal predecessors, (1148), 184 states have call successors, (184), 20 states have call predecessors, (184), 20 states have return successors, (184), 179 states have call predecessors, (184), 184 states have call successors, (184) [2024-11-23 23:31:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1516 transitions. [2024-11-23 23:31:57,769 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1516 transitions. Word has length 264 [2024-11-23 23:31:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:57,769 INFO L471 AbstractCegarLoop]: Abstraction has 1010 states and 1516 transitions. [2024-11-23 23:31:57,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:31:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1516 transitions. [2024-11-23 23:31:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:31:57,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:57,772 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:57,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:31:57,773 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:57,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1783101339, now seen corresponding path program 1 times [2024-11-23 23:31:57,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:57,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201165363] [2024-11-23 23:31:57,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:57,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:32:15,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:15,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201165363] [2024-11-23 23:32:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201165363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:32:15,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:32:15,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:32:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286514728] [2024-11-23 23:32:15,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:32:15,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:32:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:15,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:32:15,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:32:15,406 INFO L87 Difference]: Start difference. First operand 1010 states and 1516 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:32:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:32:20,642 INFO L93 Difference]: Finished difference Result 2462 states and 3684 transitions. [2024-11-23 23:32:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 23:32:20,643 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 264 [2024-11-23 23:32:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:32:20,647 INFO L225 Difference]: With dead ends: 2462 [2024-11-23 23:32:20,647 INFO L226 Difference]: Without dead ends: 1571 [2024-11-23 23:32:20,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2024-11-23 23:32:20,650 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 1285 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:32:20,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1872 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 23:32:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2024-11-23 23:32:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 963. [2024-11-23 23:32:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 763 states have (on average 1.4246395806028833) internal successors, (1087), 767 states have internal predecessors, (1087), 180 states have call successors, (180), 19 states have call predecessors, (180), 19 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-23 23:32:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1447 transitions. [2024-11-23 23:32:20,735 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1447 transitions. Word has length 264 [2024-11-23 23:32:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:32:20,736 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1447 transitions. [2024-11-23 23:32:20,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:32:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1447 transitions. [2024-11-23 23:32:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:32:20,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:32:20,739 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:32:20,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:32:20,739 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:32:20,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:32:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash -64629093, now seen corresponding path program 1 times [2024-11-23 23:32:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:32:20,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588949498] [2024-11-23 23:32:20,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:20,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:32:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:32:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588949498] [2024-11-23 23:32:38,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588949498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:32:38,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:32:38,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:32:38,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364937271] [2024-11-23 23:32:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:32:38,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:32:38,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:38,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:32:38,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:32:38,003 INFO L87 Difference]: Start difference. First operand 963 states and 1447 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:32:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:32:40,732 INFO L93 Difference]: Finished difference Result 2237 states and 3356 transitions. [2024-11-23 23:32:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:32:40,732 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 264 [2024-11-23 23:32:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:32:40,737 INFO L225 Difference]: With dead ends: 2237 [2024-11-23 23:32:40,738 INFO L226 Difference]: Without dead ends: 1393 [2024-11-23 23:32:40,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:32:40,740 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 636 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:32:40,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1805 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:32:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2024-11-23 23:32:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 968. [2024-11-23 23:32:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 768 states have (on average 1.4244791666666667) internal successors, (1094), 772 states have internal predecessors, (1094), 180 states have call successors, (180), 19 states have call predecessors, (180), 19 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-23 23:32:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1454 transitions. [2024-11-23 23:32:40,828 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1454 transitions. Word has length 264 [2024-11-23 23:32:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:32:40,829 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1454 transitions. [2024-11-23 23:32:40,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:32:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1454 transitions. [2024-11-23 23:32:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:32:40,831 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:32:40,831 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:32:40,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:32:40,832 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:32:40,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:32:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash -245875237, now seen corresponding path program 1 times [2024-11-23 23:32:40,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:32:40,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235025160] [2024-11-23 23:32:40,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:40,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:32:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:33:37,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:37,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235025160] [2024-11-23 23:33:37,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235025160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:37,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:37,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 23:33:37,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613982406] [2024-11-23 23:33:37,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:37,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:33:37,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:37,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:33:37,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:33:37,075 INFO L87 Difference]: Start difference. First operand 968 states and 1454 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:33:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:43,371 INFO L93 Difference]: Finished difference Result 1974 states and 2958 transitions. [2024-11-23 23:33:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 23:33:43,372 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 264 [2024-11-23 23:33:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:43,379 INFO L225 Difference]: With dead ends: 1974 [2024-11-23 23:33:43,379 INFO L226 Difference]: Without dead ends: 1670 [2024-11-23 23:33:43,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:33:43,381 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 980 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:43,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 2179 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 23:33:43,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2024-11-23 23:33:43,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1209. [2024-11-23 23:33:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 957 states have (on average 1.4179728317659352) internal successors, (1357), 962 states have internal predecessors, (1357), 226 states have call successors, (226), 25 states have call predecessors, (226), 25 states have return successors, (226), 221 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-23 23:33:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1809 transitions. [2024-11-23 23:33:43,498 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1809 transitions. Word has length 264 [2024-11-23 23:33:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:43,499 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1809 transitions. [2024-11-23 23:33:43,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:33:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1809 transitions. [2024-11-23 23:33:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:33:43,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:43,502 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:43,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:33:43,503 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:43,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash -832681251, now seen corresponding path program 1 times [2024-11-23 23:33:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606005352] [2024-11-23 23:33:43,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:33:44,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:44,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606005352] [2024-11-23 23:33:44,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606005352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:44,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:44,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:33:44,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308378270] [2024-11-23 23:33:44,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:44,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:33:44,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:44,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:33:44,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:33:44,644 INFO L87 Difference]: Start difference. First operand 1209 states and 1809 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:33:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:45,402 INFO L93 Difference]: Finished difference Result 2409 states and 3690 transitions. [2024-11-23 23:33:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:33:45,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-11-23 23:33:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:45,409 INFO L225 Difference]: With dead ends: 2409 [2024-11-23 23:33:45,409 INFO L226 Difference]: Without dead ends: 2095 [2024-11-23 23:33:45,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:33:45,410 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 558 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:45,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 807 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:33:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2024-11-23 23:33:45,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1258. [2024-11-23 23:33:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1006 states have (on average 1.4214711729622267) internal successors, (1430), 1011 states have internal predecessors, (1430), 226 states have call successors, (226), 25 states have call predecessors, (226), 25 states have return successors, (226), 221 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-23 23:33:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1882 transitions. [2024-11-23 23:33:45,536 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1882 transitions. Word has length 264 [2024-11-23 23:33:45,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:45,537 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 1882 transitions. [2024-11-23 23:33:45,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:33:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1882 transitions. [2024-11-23 23:33:45,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:33:45,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:45,539 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:45,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:33:45,540 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:45,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 593487259, now seen corresponding path program 1 times [2024-11-23 23:33:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:45,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803667204] [2024-11-23 23:33:45,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:45,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:34:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803667204] [2024-11-23 23:34:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803667204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:05,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:34:05,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:34:05,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154364100] [2024-11-23 23:34:05,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:05,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:34:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:05,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:34:05,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:34:05,623 INFO L87 Difference]: Start difference. First operand 1258 states and 1882 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:34:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:08,291 INFO L93 Difference]: Finished difference Result 2476 states and 3721 transitions. [2024-11-23 23:34:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:34:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 264 [2024-11-23 23:34:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:08,297 INFO L225 Difference]: With dead ends: 2476 [2024-11-23 23:34:08,297 INFO L226 Difference]: Without dead ends: 2150 [2024-11-23 23:34:08,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:34:08,298 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 638 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:08,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1732 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:34:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2024-11-23 23:34:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1293. [2024-11-23 23:34:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1041 states have (on average 1.4265129682997117) internal successors, (1485), 1046 states have internal predecessors, (1485), 226 states have call successors, (226), 25 states have call predecessors, (226), 25 states have return successors, (226), 221 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-23 23:34:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1937 transitions. [2024-11-23 23:34:08,418 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1937 transitions. Word has length 264 [2024-11-23 23:34:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:08,419 INFO L471 AbstractCegarLoop]: Abstraction has 1293 states and 1937 transitions. [2024-11-23 23:34:08,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:34:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1937 transitions. [2024-11-23 23:34:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:34:08,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:08,422 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:08,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:34:08,422 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:08,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:08,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1923649949, now seen corresponding path program 1 times [2024-11-23 23:34:08,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:08,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408696769] [2024-11-23 23:34:08,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:34:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408696769] [2024-11-23 23:34:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408696769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:34:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:34:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444436632] [2024-11-23 23:34:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:18,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:34:18,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:18,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:34:18,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:34:18,533 INFO L87 Difference]: Start difference. First operand 1293 states and 1937 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:34:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:19,980 INFO L93 Difference]: Finished difference Result 2617 states and 3912 transitions. [2024-11-23 23:34:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:34:19,981 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-11-23 23:34:19,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:19,988 INFO L225 Difference]: With dead ends: 2617 [2024-11-23 23:34:19,989 INFO L226 Difference]: Without dead ends: 1478 [2024-11-23 23:34:19,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:34:19,992 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 431 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:19,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1430 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:34:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2024-11-23 23:34:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1257. [2024-11-23 23:34:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1005 states have (on average 1.4218905472636816) internal successors, (1429), 1010 states have internal predecessors, (1429), 226 states have call successors, (226), 25 states have call predecessors, (226), 25 states have return successors, (226), 221 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-23 23:34:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1881 transitions. [2024-11-23 23:34:20,112 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1881 transitions. Word has length 264 [2024-11-23 23:34:20,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:20,115 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1881 transitions. [2024-11-23 23:34:20,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:34:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1881 transitions. [2024-11-23 23:34:20,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-23 23:34:20,117 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:20,118 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:20,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:34:20,118 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:20,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1336843935, now seen corresponding path program 1 times [2024-11-23 23:34:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:20,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754673088] [2024-11-23 23:34:20,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:34:27,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:27,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754673088] [2024-11-23 23:34:27,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754673088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:34:27,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:34:27,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:34:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058695574] [2024-11-23 23:34:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:34:27,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:34:27,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:27,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:34:27,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:34:27,448 INFO L87 Difference]: Start difference. First operand 1257 states and 1881 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:34:28,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:28,949 INFO L93 Difference]: Finished difference Result 2408 states and 3597 transitions. [2024-11-23 23:34:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:34:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 264 [2024-11-23 23:34:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:28,956 INFO L225 Difference]: With dead ends: 2408 [2024-11-23 23:34:28,956 INFO L226 Difference]: Without dead ends: 1466 [2024-11-23 23:34:28,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:34:28,958 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 408 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:28,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1700 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:34:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2024-11-23 23:34:29,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1201. [2024-11-23 23:34:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 949 states have (on average 1.4109589041095891) internal successors, (1339), 954 states have internal predecessors, (1339), 226 states have call successors, (226), 25 states have call predecessors, (226), 25 states have return successors, (226), 221 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-23 23:34:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1791 transitions. [2024-11-23 23:34:29,061 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1791 transitions. Word has length 264 [2024-11-23 23:34:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:29,062 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1791 transitions. [2024-11-23 23:34:29,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:34:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1791 transitions. [2024-11-23 23:34:29,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-23 23:34:29,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:29,064 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:29,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:34:29,065 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:29,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash 490973476, now seen corresponding path program 1 times [2024-11-23 23:34:29,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:29,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954806940] [2024-11-23 23:34:29,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:29,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:35:29,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:35:29,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954806940] [2024-11-23 23:35:29,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954806940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:29,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:29,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-23 23:35:29,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687795811] [2024-11-23 23:35:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:29,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:35:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:35:29,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:35:29,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:35:29,868 INFO L87 Difference]: Start difference. First operand 1201 states and 1791 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:35:37,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:37,708 INFO L93 Difference]: Finished difference Result 2030 states and 3029 transitions. [2024-11-23 23:35:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 23:35:37,709 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 265 [2024-11-23 23:35:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:37,717 INFO L225 Difference]: With dead ends: 2030 [2024-11-23 23:35:37,717 INFO L226 Difference]: Without dead ends: 1704 [2024-11-23 23:35:37,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 23:35:37,724 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 1102 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:37,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 2106 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-23 23:35:37,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2024-11-23 23:35:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1197. [2024-11-23 23:35:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 945 states have (on average 1.4095238095238096) internal successors, (1332), 950 states have internal predecessors, (1332), 226 states have call successors, (226), 25 states have call predecessors, (226), 25 states have return successors, (226), 221 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-23 23:35:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1784 transitions. [2024-11-23 23:35:37,843 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1784 transitions. Word has length 265 [2024-11-23 23:35:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:37,844 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 1784 transitions. [2024-11-23 23:35:37,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:35:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1784 transitions. [2024-11-23 23:35:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-23 23:35:37,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:37,847 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:37,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:35:37,847 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:35:37,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash -33792924, now seen corresponding path program 1 times [2024-11-23 23:35:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:35:37,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76359734] [2024-11-23 23:35:37,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:37,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:35:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:35:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:35:48,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76359734] [2024-11-23 23:35:48,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76359734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:48,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:48,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:35:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524146562] [2024-11-23 23:35:48,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:48,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:35:48,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:35:48,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:35:48,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:35:48,757 INFO L87 Difference]: Start difference. First operand 1197 states and 1784 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:35:50,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:50,286 INFO L93 Difference]: Finished difference Result 1890 states and 2823 transitions. [2024-11-23 23:35:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:35:50,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 265 [2024-11-23 23:35:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:50,303 INFO L225 Difference]: With dead ends: 1890 [2024-11-23 23:35:50,303 INFO L226 Difference]: Without dead ends: 1564 [2024-11-23 23:35:50,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:35:50,306 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 325 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:50,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 953 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:35:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2024-11-23 23:35:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1199. [2024-11-23 23:35:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 947 states have (on average 1.4086589229144668) internal successors, (1334), 952 states have internal predecessors, (1334), 226 states have call successors, (226), 25 states have call predecessors, (226), 25 states have return successors, (226), 221 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-23 23:35:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1786 transitions. [2024-11-23 23:35:50,384 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1786 transitions. Word has length 265 [2024-11-23 23:35:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:50,385 INFO L471 AbstractCegarLoop]: Abstraction has 1199 states and 1786 transitions. [2024-11-23 23:35:50,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:35:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1786 transitions. [2024-11-23 23:35:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-23 23:35:50,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:50,387 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:50,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:35:50,388 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:35:50,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1292451715, now seen corresponding path program 1 times [2024-11-23 23:35:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:35:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421656908] [2024-11-23 23:35:50,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:35:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:35:58,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:35:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421656908] [2024-11-23 23:35:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421656908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:35:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014168641] [2024-11-23 23:35:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:58,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:35:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:35:58,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:35:58,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:35:58,388 INFO L87 Difference]: Start difference. First operand 1199 states and 1786 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:36:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:02,055 INFO L93 Difference]: Finished difference Result 2085 states and 3142 transitions. [2024-11-23 23:36:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:36:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 266 [2024-11-23 23:36:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:02,063 INFO L225 Difference]: With dead ends: 2085 [2024-11-23 23:36:02,063 INFO L226 Difference]: Without dead ends: 1759 [2024-11-23 23:36:02,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:36:02,066 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 750 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:02,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1742 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 23:36:02,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2024-11-23 23:36:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1454. [2024-11-23 23:36:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1188 states have (on average 1.4250841750841752) internal successors, (1693), 1195 states have internal predecessors, (1693), 238 states have call successors, (238), 27 states have call predecessors, (238), 27 states have return successors, (238), 231 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-23 23:36:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2169 transitions. [2024-11-23 23:36:02,201 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2169 transitions. Word has length 266 [2024-11-23 23:36:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:02,202 INFO L471 AbstractCegarLoop]: Abstraction has 1454 states and 2169 transitions. [2024-11-23 23:36:02,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:36:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2169 transitions. [2024-11-23 23:36:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-23 23:36:02,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:02,204 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:02,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:36:02,205 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:02,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash -839081029, now seen corresponding path program 1 times [2024-11-23 23:36:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:02,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347085950] [2024-11-23 23:36:02,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:36:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347085950] [2024-11-23 23:36:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347085950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:06,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:36:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202823318] [2024-11-23 23:36:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:06,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:36:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:36:06,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:36:06,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:36:06,025 INFO L87 Difference]: Start difference. First operand 1454 states and 2169 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:36:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:07,744 INFO L93 Difference]: Finished difference Result 2296 states and 3419 transitions. [2024-11-23 23:36:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:36:07,745 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 266 [2024-11-23 23:36:07,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:07,751 INFO L225 Difference]: With dead ends: 2296 [2024-11-23 23:36:07,751 INFO L226 Difference]: Without dead ends: 2294 [2024-11-23 23:36:07,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:36:07,753 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 235 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:07,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1981 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:36:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2024-11-23 23:36:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1827. [2024-11-23 23:36:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1549 states have (on average 1.4557779212395094) internal successors, (2255), 1557 states have internal predecessors, (2255), 248 states have call successors, (248), 29 states have call predecessors, (248), 29 states have return successors, (248), 240 states have call predecessors, (248), 248 states have call successors, (248) [2024-11-23 23:36:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2751 transitions. [2024-11-23 23:36:07,916 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2751 transitions. Word has length 266 [2024-11-23 23:36:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:07,916 INFO L471 AbstractCegarLoop]: Abstraction has 1827 states and 2751 transitions. [2024-11-23 23:36:07,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:36:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2751 transitions. [2024-11-23 23:36:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-23 23:36:07,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:07,919 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:07,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:36:07,920 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:07,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1155063677, now seen corresponding path program 1 times [2024-11-23 23:36:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:07,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960433165] [2024-11-23 23:36:07,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:36:12,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:12,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960433165] [2024-11-23 23:36:12,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960433165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:12,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:12,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:36:12,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117886989] [2024-11-23 23:36:12,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:12,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:36:12,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:36:12,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:36:12,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:36:12,752 INFO L87 Difference]: Start difference. First operand 1827 states and 2751 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:36:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:15,382 INFO L93 Difference]: Finished difference Result 2194 states and 3270 transitions. [2024-11-23 23:36:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:36:15,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 266 [2024-11-23 23:36:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:15,387 INFO L225 Difference]: With dead ends: 2194 [2024-11-23 23:36:15,387 INFO L226 Difference]: Without dead ends: 2192 [2024-11-23 23:36:15,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:36:15,388 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 456 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:15,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1752 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 23:36:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2024-11-23 23:36:15,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1719. [2024-11-23 23:36:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1441 states have (on average 1.4462179042331713) internal successors, (2084), 1449 states have internal predecessors, (2084), 248 states have call successors, (248), 29 states have call predecessors, (248), 29 states have return successors, (248), 240 states have call predecessors, (248), 248 states have call successors, (248) [2024-11-23 23:36:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2580 transitions. [2024-11-23 23:36:15,553 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2580 transitions. Word has length 266 [2024-11-23 23:36:15,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:15,554 INFO L471 AbstractCegarLoop]: Abstraction has 1719 states and 2580 transitions. [2024-11-23 23:36:15,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-23 23:36:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2580 transitions. [2024-11-23 23:36:15,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-23 23:36:15,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:15,556 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:15,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:36:15,556 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:15,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -869749889, now seen corresponding path program 1 times [2024-11-23 23:36:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:15,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131844040] [2024-11-23 23:36:15,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:36:17,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:17,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131844040] [2024-11-23 23:36:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131844040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:17,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:17,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:36:17,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504514931] [2024-11-23 23:36:17,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:17,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:36:17,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:36:17,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:36:17,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:36:17,796 INFO L87 Difference]: Start difference. First operand 1719 states and 2580 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:36:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:19,264 INFO L93 Difference]: Finished difference Result 2100 states and 3100 transitions. [2024-11-23 23:36:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:36:19,265 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 266 [2024-11-23 23:36:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:19,272 INFO L225 Difference]: With dead ends: 2100 [2024-11-23 23:36:19,273 INFO L226 Difference]: Without dead ends: 2098 [2024-11-23 23:36:19,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:36:19,274 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 233 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:19,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1702 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:36:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2024-11-23 23:36:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1829. [2024-11-23 23:36:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1528 states have (on average 1.4365183246073299) internal successors, (2195), 1539 states have internal predecessors, (2195), 268 states have call successors, (268), 32 states have call predecessors, (268), 32 states have return successors, (268), 257 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-23 23:36:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2731 transitions. [2024-11-23 23:36:19,434 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2731 transitions. Word has length 266 [2024-11-23 23:36:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:19,434 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2731 transitions. [2024-11-23 23:36:19,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:36:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2731 transitions. [2024-11-23 23:36:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-23 23:36:19,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:19,437 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:19,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 23:36:19,437 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:19,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash -416379203, now seen corresponding path program 1 times [2024-11-23 23:36:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629087996] [2024-11-23 23:36:19,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:19,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:36:22,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629087996] [2024-11-23 23:36:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629087996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:22,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:22,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:36:22,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926814202] [2024-11-23 23:36:22,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:22,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:36:22,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:36:22,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:36:22,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:36:22,838 INFO L87 Difference]: Start difference. First operand 1829 states and 2731 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:36:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:25,961 INFO L93 Difference]: Finished difference Result 2806 states and 4172 transitions. [2024-11-23 23:36:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:36:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 266 [2024-11-23 23:36:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:25,967 INFO L225 Difference]: With dead ends: 2806 [2024-11-23 23:36:25,967 INFO L226 Difference]: Without dead ends: 2804 [2024-11-23 23:36:25,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:36:25,969 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 626 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:25,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1877 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 23:36:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2024-11-23 23:36:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1865. [2024-11-23 23:36:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1564 states have (on average 1.438618925831202) internal successors, (2250), 1575 states have internal predecessors, (2250), 268 states have call successors, (268), 32 states have call predecessors, (268), 32 states have return successors, (268), 257 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-23 23:36:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2786 transitions. [2024-11-23 23:36:26,106 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2786 transitions. Word has length 266 [2024-11-23 23:36:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:26,107 INFO L471 AbstractCegarLoop]: Abstraction has 1865 states and 2786 transitions. [2024-11-23 23:36:26,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:36:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2786 transitions. [2024-11-23 23:36:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-23 23:36:26,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:26,109 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:26,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:36:26,109 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:26,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1577765503, now seen corresponding path program 1 times [2024-11-23 23:36:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:26,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075927813] [2024-11-23 23:36:26,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-23 23:36:29,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:29,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075927813] [2024-11-23 23:36:29,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075927813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:29,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:29,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:36:29,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598900249] [2024-11-23 23:36:29,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:29,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:36:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:36:29,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:36:29,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:36:29,421 INFO L87 Difference]: Start difference. First operand 1865 states and 2786 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:36:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:31,285 INFO L93 Difference]: Finished difference Result 3339 states and 5005 transitions. [2024-11-23 23:36:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:36:31,285 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 266 [2024-11-23 23:36:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:31,294 INFO L225 Difference]: With dead ends: 3339 [2024-11-23 23:36:31,294 INFO L226 Difference]: Without dead ends: 3337 [2024-11-23 23:36:31,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:36:31,296 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 384 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 3837 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:31,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 3837 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:36:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2024-11-23 23:36:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 1930. [2024-11-23 23:36:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1629 states have (on average 1.4462860650705955) internal successors, (2356), 1640 states have internal predecessors, (2356), 268 states have call successors, (268), 32 states have call predecessors, (268), 32 states have return successors, (268), 257 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-23 23:36:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2892 transitions. [2024-11-23 23:36:31,454 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2892 transitions. Word has length 266 [2024-11-23 23:36:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:31,455 INFO L471 AbstractCegarLoop]: Abstraction has 1930 states and 2892 transitions. [2024-11-23 23:36:31,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-23 23:36:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2892 transitions. [2024-11-23 23:36:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-23 23:36:31,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:31,457 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:31,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 23:36:31,458 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:31,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:31,458 INFO L85 PathProgramCache]: Analyzing trace with hash -605504736, now seen corresponding path program 1 times [2024-11-23 23:36:31,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:31,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594431450] [2024-11-23 23:36:31,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:31,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat