./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/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_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/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_45fa0b7e-3a25-4f44-8585-84c96f5c68da/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 20b89f8a60d2f6d2584628c0d5624c8090542a805d1f710cb23a05b88ce8a600 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:03:31,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:03:31,108 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:03:31,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:03:31,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:03:31,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:03:31,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:03:31,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:03:31,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:03:31,141 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:03:31,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:03:31,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:03:31,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:03:31,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:03:31,142 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:03:31,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:03:31,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:03:31,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:03:31,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:03:31,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:03:31,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:03:31,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:03:31,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:03:31,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:03:31,143 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:03:31,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:03:31,144 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:03:31,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:03:31,144 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:03:31,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:03:31,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:03:31,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:03:31,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:03:31,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:03:31,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:03:31,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:03:31,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:03:31,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:03:31,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:03:31,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:03:31,146 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:03:31,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:03:31,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:03:31,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:03:31,146 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:03:31,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:03:31,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:03:31,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:03:31,147 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_45fa0b7e-3a25-4f44-8585-84c96f5c68da/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 -> 20b89f8a60d2f6d2584628c0d5624c8090542a805d1f710cb23a05b88ce8a600 [2024-11-23 23:03:31,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:03:31,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:03:31,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:03:31,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:03:31,418 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:03:31,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2024-11-23 23:03:34,406 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/data/21543ddfe/7c1c0143ce124e53adec476f9a741a44/FLAG6f56bb1b0 [2024-11-23 23:03:34,764 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:03:34,765 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2024-11-23 23:03:34,780 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/data/21543ddfe/7c1c0143ce124e53adec476f9a741a44/FLAG6f56bb1b0 [2024-11-23 23:03:34,801 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/data/21543ddfe/7c1c0143ce124e53adec476f9a741a44 [2024-11-23 23:03:34,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:03:34,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:03:34,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:03:34,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:03:34,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:03:34,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:03:34" (1/1) ... [2024-11-23 23:03:34,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:34, skipping insertion in model container [2024-11-23 23:03:34,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:03:34" (1/1) ... [2024-11-23 23:03:34,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:03:35,025 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_45fa0b7e-3a25-4f44-8585-84c96f5c68da/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i[915,928] [2024-11-23 23:03:35,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:03:35,160 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:03:35,179 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_45fa0b7e-3a25-4f44-8585-84c96f5c68da/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-81.i[915,928] [2024-11-23 23:03:35,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:03:35,275 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:03:35,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35 WrapperNode [2024-11-23 23:03:35,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:03:35,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:03:35,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:03:35,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:03:35,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,370 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2024-11-23 23:03:35,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:03:35,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:03:35,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:03:35,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:03:35,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,406 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 23:03:35,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,429 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:03:35,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:03:35,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:03:35,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:03:35,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (1/1) ... [2024-11-23 23:03:35,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:03:35,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:03:35,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:03:35,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:03:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:03:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:03:35,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:03:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:03:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:03:35,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:03:35,664 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:03:35,666 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:03:36,373 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-23 23:03:36,374 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:03:36,385 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:03:36,385 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:03:36,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:03:36 BoogieIcfgContainer [2024-11-23 23:03:36,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:03:36,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:03:36,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:03:36,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:03:36,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:03:34" (1/3) ... [2024-11-23 23:03:36,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de9ce74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:03:36, skipping insertion in model container [2024-11-23 23:03:36,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:35" (2/3) ... [2024-11-23 23:03:36,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de9ce74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:03:36, skipping insertion in model container [2024-11-23 23:03:36,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:03:36" (3/3) ... [2024-11-23 23:03:36,397 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-81.i [2024-11-23 23:03:36,413 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:03:36,414 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-81.i that has 2 procedures, 109 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:03:36,479 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:03:36,491 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;@68a04ef7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:03:36,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:03:36,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 66 states have internal predecessors, (90), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:03:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-23 23:03:36,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:36,512 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:36,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:36,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash 598275583, now seen corresponding path program 1 times [2024-11-23 23:03:36,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:36,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579868853] [2024-11-23 23:03:36,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:36,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2024-11-23 23:03:37,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:37,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579868853] [2024-11-23 23:03:37,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579868853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:03:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524745331] [2024-11-23 23:03:37,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:37,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:03:37,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:03:37,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:03:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:37,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:03:37,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:03:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2024-11-23 23:03:37,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:03:37,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524745331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:37,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:03:37,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:03:37,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935604841] [2024-11-23 23:03:37,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:37,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:03:37,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:37,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:03:37,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:03:37,562 INFO L87 Difference]: Start difference. First operand has 109 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 66 states have internal predecessors, (90), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-23 23:03:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:37,627 INFO L93 Difference]: Finished difference Result 211 states and 379 transitions. [2024-11-23 23:03:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:03:37,629 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 251 [2024-11-23 23:03:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:37,639 INFO L225 Difference]: With dead ends: 211 [2024-11-23 23:03:37,639 INFO L226 Difference]: Without dead ends: 105 [2024-11-23 23:03:37,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 252 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 23:03:37,650 INFO L435 NwaCegarLoop]: 165 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, 165 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 23:03:37,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:03:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-23 23:03:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-23 23:03:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:03:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 165 transitions. [2024-11-23 23:03:37,732 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 165 transitions. Word has length 251 [2024-11-23 23:03:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:37,732 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 165 transitions. [2024-11-23 23:03:37,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-23 23:03:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 165 transitions. [2024-11-23 23:03:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-23 23:03:37,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:37,744 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:37,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:03:37,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:03:37,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:37,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1120972483, now seen corresponding path program 1 times [2024-11-23 23:03:37,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:37,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672125595] [2024-11-23 23:03:37,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:03:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672125595] [2024-11-23 23:03:58,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672125595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:58,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:58,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:03:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103098861] [2024-11-23 23:03:58,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:58,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:03:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:58,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:03:58,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:03:58,121 INFO L87 Difference]: Start difference. First operand 105 states and 165 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-23 23:04:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:03,077 INFO L93 Difference]: Finished difference Result 417 states and 642 transitions. [2024-11-23 23:04:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:04:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 251 [2024-11-23 23:04:03,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:03,083 INFO L225 Difference]: With dead ends: 417 [2024-11-23 23:04:03,083 INFO L226 Difference]: Without dead ends: 315 [2024-11-23 23:04:03,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:04:03,086 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 929 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:03,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 862 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:04:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-23 23:04:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 196. [2024-11-23 23:04:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 111 states have (on average 1.3243243243243243) internal successors, (147), 111 states have internal predecessors, (147), 82 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:04:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 311 transitions. [2024-11-23 23:04:03,155 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 311 transitions. Word has length 251 [2024-11-23 23:04:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:03,157 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 311 transitions. [2024-11-23 23:04:03,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-23 23:04:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 311 transitions. [2024-11-23 23:04:03,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-23 23:04:03,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:03,166 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:03,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:04:03,167 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:03,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1513999493, now seen corresponding path program 1 times [2024-11-23 23:04:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479409514] [2024-11-23 23:04:03,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:04:03,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:03,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479409514] [2024-11-23 23:04:03,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479409514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:03,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:03,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:04:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087198582] [2024-11-23 23:04:03,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:03,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:03,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:03,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:03,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:04:03,650 INFO L87 Difference]: Start difference. First operand 196 states and 311 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:03,762 INFO L93 Difference]: Finished difference Result 333 states and 522 transitions. [2024-11-23 23:04:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 251 [2024-11-23 23:04:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:03,767 INFO L225 Difference]: With dead ends: 333 [2024-11-23 23:04:03,767 INFO L226 Difference]: Without dead ends: 231 [2024-11-23 23:04:03,768 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 23:04:03,769 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 42 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:03,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 485 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-23 23:04:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2024-11-23 23:04:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 138 states have (on average 1.326086956521739) internal successors, (183), 139 states have internal predecessors, (183), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:04:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 355 transitions. [2024-11-23 23:04:03,824 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 355 transitions. Word has length 251 [2024-11-23 23:04:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:03,825 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 355 transitions. [2024-11-23 23:04:03,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 355 transitions. [2024-11-23 23:04:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-23 23:04:03,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:03,829 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:03,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:04:03,829 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:03,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash -419907905, now seen corresponding path program 1 times [2024-11-23 23:04:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:03,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580913338] [2024-11-23 23:04:03,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:04:16,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:16,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580913338] [2024-11-23 23:04:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580913338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:04:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631634527] [2024-11-23 23:04:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:16,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:04:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:16,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:04:16,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:04:16,016 INFO L87 Difference]: Start difference. First operand 228 states and 355 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:17,160 INFO L93 Difference]: Finished difference Result 402 states and 615 transitions. [2024-11-23 23:04:17,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:04:17,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 251 [2024-11-23 23:04:17,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:17,165 INFO L225 Difference]: With dead ends: 402 [2024-11-23 23:04:17,166 INFO L226 Difference]: Without dead ends: 268 [2024-11-23 23:04:17,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:04:17,167 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 86 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:17,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 778 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:04:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-23 23:04:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 147. [2024-11-23 23:04:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 99 states have (on average 1.3535353535353536) internal successors, (134), 100 states have internal predecessors, (134), 45 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-23 23:04:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 224 transitions. [2024-11-23 23:04:17,194 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 224 transitions. Word has length 251 [2024-11-23 23:04:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:17,195 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 224 transitions. [2024-11-23 23:04:17,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 224 transitions. [2024-11-23 23:04:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-23 23:04:17,199 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:17,199 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:17,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:04:17,199 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:17,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash -862807045, now seen corresponding path program 1 times [2024-11-23 23:04:17,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:17,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010276312] [2024-11-23 23:04:17,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:17,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:04:18,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:18,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010276312] [2024-11-23 23:04:18,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010276312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:18,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:18,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:04:18,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396898424] [2024-11-23 23:04:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:18,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:04:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:18,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:04:18,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:04:18,093 INFO L87 Difference]: Start difference. First operand 147 states and 224 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:18,821 INFO L93 Difference]: Finished difference Result 424 states and 651 transitions. [2024-11-23 23:04:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 251 [2024-11-23 23:04:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:18,824 INFO L225 Difference]: With dead ends: 424 [2024-11-23 23:04:18,824 INFO L226 Difference]: Without dead ends: 280 [2024-11-23 23:04:18,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:04:18,828 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 171 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:18,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 600 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:04:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-23 23:04:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 232. [2024-11-23 23:04:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 142 states have (on average 1.323943661971831) internal successors, (188), 143 states have internal predecessors, (188), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:04:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 360 transitions. [2024-11-23 23:04:18,883 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 360 transitions. Word has length 251 [2024-11-23 23:04:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:18,885 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 360 transitions. [2024-11-23 23:04:18,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:18,886 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 360 transitions. [2024-11-23 23:04:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:04:18,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:18,891 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:18,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:04:18,892 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:18,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:18,893 INFO L85 PathProgramCache]: Analyzing trace with hash 717630209, now seen corresponding path program 1 times [2024-11-23 23:04:18,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:18,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94333323] [2024-11-23 23:04:18,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:04:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94333323] [2024-11-23 23:04:26,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94333323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:26,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:26,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:04:26,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268388207] [2024-11-23 23:04:26,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:26,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:04:26,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:26,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:04:26,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:04:26,848 INFO L87 Difference]: Start difference. First operand 232 states and 360 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:29,201 INFO L93 Difference]: Finished difference Result 576 states and 859 transitions. [2024-11-23 23:04:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:04:29,202 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-23 23:04:29,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:29,204 INFO L225 Difference]: With dead ends: 576 [2024-11-23 23:04:29,204 INFO L226 Difference]: Without dead ends: 432 [2024-11-23 23:04:29,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:04:29,206 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 577 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:29,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 825 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:04:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-23 23:04:29,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 237. [2024-11-23 23:04:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 147 states have (on average 1.3333333333333333) internal successors, (196), 148 states have internal predecessors, (196), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:04:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 368 transitions. [2024-11-23 23:04:29,243 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 368 transitions. Word has length 252 [2024-11-23 23:04:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:29,244 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 368 transitions. [2024-11-23 23:04:29,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 368 transitions. [2024-11-23 23:04:29,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:04:29,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:29,248 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:29,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:04:29,248 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:29,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:29,248 INFO L85 PathProgramCache]: Analyzing trace with hash 324603199, now seen corresponding path program 1 times [2024-11-23 23:04:29,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:29,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601723033] [2024-11-23 23:04:29,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:29,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:04:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601723033] [2024-11-23 23:04:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601723033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:36,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:36,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:04:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874099715] [2024-11-23 23:04:36,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:36,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:04:36,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:36,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:04:36,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:04:36,380 INFO L87 Difference]: Start difference. First operand 237 states and 368 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-23 23:04:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:38,934 INFO L93 Difference]: Finished difference Result 544 states and 815 transitions. [2024-11-23 23:04:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:04:38,936 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 252 [2024-11-23 23:04:38,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:38,939 INFO L225 Difference]: With dead ends: 544 [2024-11-23 23:04:38,939 INFO L226 Difference]: Without dead ends: 400 [2024-11-23 23:04:38,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:04:38,941 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 404 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:38,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1042 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:04:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-23 23:04:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 245. [2024-11-23 23:04:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 155 states have (on average 1.335483870967742) internal successors, (207), 156 states have internal predecessors, (207), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:04:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 379 transitions. [2024-11-23 23:04:38,981 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 379 transitions. Word has length 252 [2024-11-23 23:04:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:38,981 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 379 transitions. [2024-11-23 23:04:38,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-23 23:04:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 379 transitions. [2024-11-23 23:04:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:04:38,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:38,986 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:38,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:04:38,986 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:38,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:38,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1418694787, now seen corresponding path program 1 times [2024-11-23 23:04:38,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:38,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109133078] [2024-11-23 23:04:38,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:38,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:04:49,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109133078] [2024-11-23 23:04:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109133078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:04:49,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921513490] [2024-11-23 23:04:49,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:49,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:04:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:49,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:04:49,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:04:49,804 INFO L87 Difference]: Start difference. First operand 245 states and 379 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:53,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:53,096 INFO L93 Difference]: Finished difference Result 539 states and 808 transitions. [2024-11-23 23:04:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:04:53,098 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-23 23:04:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:53,103 INFO L225 Difference]: With dead ends: 539 [2024-11-23 23:04:53,103 INFO L226 Difference]: Without dead ends: 395 [2024-11-23 23:04:53,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:04:53,108 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 374 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:53,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 911 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:04:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-23 23:04:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 246. [2024-11-23 23:04:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 156 states have (on average 1.3397435897435896) internal successors, (209), 157 states have internal predecessors, (209), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:04:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 381 transitions. [2024-11-23 23:04:53,153 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 381 transitions. Word has length 252 [2024-11-23 23:04:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:53,154 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 381 transitions. [2024-11-23 23:04:53,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:04:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 381 transitions. [2024-11-23 23:04:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:04:53,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:53,156 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:53,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:04:53,156 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:53,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1025667777, now seen corresponding path program 1 times [2024-11-23 23:04:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:53,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880598235] [2024-11-23 23:04:53,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:04:59,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:59,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880598235] [2024-11-23 23:04:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880598235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:59,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:59,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:04:59,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397395725] [2024-11-23 23:04:59,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:59,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:04:59,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:59,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:04:59,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:04:59,420 INFO L87 Difference]: Start difference. First operand 246 states and 381 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-23 23:05:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:02,332 INFO L93 Difference]: Finished difference Result 516 states and 776 transitions. [2024-11-23 23:05:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:05:02,334 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 252 [2024-11-23 23:05:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:02,339 INFO L225 Difference]: With dead ends: 516 [2024-11-23 23:05:02,339 INFO L226 Difference]: Without dead ends: 372 [2024-11-23 23:05:02,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:05:02,341 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 350 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:02,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1035 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:05:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-23 23:05:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 245. [2024-11-23 23:05:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 155 states have (on average 1.335483870967742) internal successors, (207), 156 states have internal predecessors, (207), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:05:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 379 transitions. [2024-11-23 23:05:02,388 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 379 transitions. Word has length 252 [2024-11-23 23:05:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:02,389 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 379 transitions. [2024-11-23 23:05:02,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-23 23:05:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 379 transitions. [2024-11-23 23:05:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:05:02,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:02,395 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:02,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:05:02,395 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:02,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash -293487041, now seen corresponding path program 1 times [2024-11-23 23:05:02,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935322263] [2024-11-23 23:05:02,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:05:09,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:09,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935322263] [2024-11-23 23:05:09,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935322263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:09,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:09,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:05:09,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633564468] [2024-11-23 23:05:09,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:09,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:05:09,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:09,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:05:09,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:05:09,960 INFO L87 Difference]: Start difference. First operand 245 states and 379 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:11,383 INFO L93 Difference]: Finished difference Result 538 states and 808 transitions. [2024-11-23 23:05:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:05:11,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-23 23:05:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:11,387 INFO L225 Difference]: With dead ends: 538 [2024-11-23 23:05:11,387 INFO L226 Difference]: Without dead ends: 394 [2024-11-23 23:05:11,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:05:11,391 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 263 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:11,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 694 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:05:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-23 23:05:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 252. [2024-11-23 23:05:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 162 states have (on average 1.345679012345679) internal successors, (218), 163 states have internal predecessors, (218), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:05:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 390 transitions. [2024-11-23 23:05:11,447 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 390 transitions. Word has length 252 [2024-11-23 23:05:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:11,447 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 390 transitions. [2024-11-23 23:05:11,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 390 transitions. [2024-11-23 23:05:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:05:11,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:11,450 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:11,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:05:11,450 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:11,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash -686514051, now seen corresponding path program 1 times [2024-11-23 23:05:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:11,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940693266] [2024-11-23 23:05:11,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:05:12,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:12,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940693266] [2024-11-23 23:05:12,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940693266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:12,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:12,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:05:12,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129420342] [2024-11-23 23:05:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:12,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:05:12,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:12,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:05:12,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:05:12,712 INFO L87 Difference]: Start difference. First operand 252 states and 390 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:13,964 INFO L93 Difference]: Finished difference Result 489 states and 742 transitions. [2024-11-23 23:05:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:05:13,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-23 23:05:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:13,971 INFO L225 Difference]: With dead ends: 489 [2024-11-23 23:05:13,971 INFO L226 Difference]: Without dead ends: 340 [2024-11-23 23:05:13,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:05:13,973 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 244 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:13,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 635 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:05:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-23 23:05:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 253. [2024-11-23 23:05:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 163 states have (on average 1.3496932515337423) internal successors, (220), 164 states have internal predecessors, (220), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:05:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 392 transitions. [2024-11-23 23:05:14,018 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 392 transitions. Word has length 252 [2024-11-23 23:05:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:14,019 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 392 transitions. [2024-11-23 23:05:14,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 392 transitions. [2024-11-23 23:05:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:05:14,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:14,021 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:14,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:05:14,021 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:14,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash 407577537, now seen corresponding path program 1 times [2024-11-23 23:05:14,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213057468] [2024-11-23 23:05:14,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:14,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:05:23,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:23,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213057468] [2024-11-23 23:05:23,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213057468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:23,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:23,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:05:23,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328443379] [2024-11-23 23:05:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:23,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:05:23,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:23,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:05:23,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:05:23,637 INFO L87 Difference]: Start difference. First operand 253 states and 392 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:26,311 INFO L93 Difference]: Finished difference Result 481 states and 729 transitions. [2024-11-23 23:05:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:05:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-23 23:05:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:26,316 INFO L225 Difference]: With dead ends: 481 [2024-11-23 23:05:26,316 INFO L226 Difference]: Without dead ends: 332 [2024-11-23 23:05:26,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:05:26,318 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 293 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:26,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 835 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:05:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-23 23:05:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 250. [2024-11-23 23:05:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 160 states have (on average 1.35) internal successors, (216), 161 states have internal predecessors, (216), 86 states have call successors, (86), 3 states have call predecessors, (86), 3 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 23:05:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 388 transitions. [2024-11-23 23:05:26,363 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 388 transitions. Word has length 252 [2024-11-23 23:05:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:26,364 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 388 transitions. [2024-11-23 23:05:26,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 388 transitions. [2024-11-23 23:05:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:05:26,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:26,366 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:26,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:05:26,366 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:26,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash -562233469, now seen corresponding path program 1 times [2024-11-23 23:05:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:26,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447742491] [2024-11-23 23:05:26,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:05:26,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:26,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447742491] [2024-11-23 23:05:26,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447742491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:26,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:26,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:05:26,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121975140] [2024-11-23 23:05:26,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:26,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:05:26,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:26,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:05:26,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:05:26,661 INFO L87 Difference]: Start difference. First operand 250 states and 388 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:26,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:26,783 INFO L93 Difference]: Finished difference Result 430 states and 655 transitions. [2024-11-23 23:05:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:05:26,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-23 23:05:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:26,786 INFO L225 Difference]: With dead ends: 430 [2024-11-23 23:05:26,786 INFO L226 Difference]: Without dead ends: 281 [2024-11-23 23:05:26,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:05:26,788 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 61 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:26,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 494 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:05:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-23 23:05:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 237. [2024-11-23 23:05:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 150 states have internal predecessors, (202), 82 states have call successors, (82), 4 states have call predecessors, (82), 4 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:05:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 366 transitions. [2024-11-23 23:05:26,829 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 366 transitions. Word has length 252 [2024-11-23 23:05:26,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:26,829 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 366 transitions. [2024-11-23 23:05:26,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 366 transitions. [2024-11-23 23:05:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:05:26,831 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:26,832 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:26,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:05:26,832 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:26,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash -955260479, now seen corresponding path program 1 times [2024-11-23 23:05:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:26,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605916381] [2024-11-23 23:05:26,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:26,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:05:38,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:38,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605916381] [2024-11-23 23:05:38,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605916381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:38,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:05:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498938889] [2024-11-23 23:05:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:38,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:05:38,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:38,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:05:38,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:05:38,880 INFO L87 Difference]: Start difference. First operand 237 states and 366 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:41,436 INFO L93 Difference]: Finished difference Result 456 states and 684 transitions. [2024-11-23 23:05:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:05:41,437 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-23 23:05:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:41,439 INFO L225 Difference]: With dead ends: 456 [2024-11-23 23:05:41,439 INFO L226 Difference]: Without dead ends: 322 [2024-11-23 23:05:41,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:05:41,441 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 353 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:41,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 923 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:05:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-23 23:05:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 241. [2024-11-23 23:05:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 154 states have (on average 1.344155844155844) internal successors, (207), 154 states have internal predecessors, (207), 82 states have call successors, (82), 4 states have call predecessors, (82), 4 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:05:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 371 transitions. [2024-11-23 23:05:41,482 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 371 transitions. Word has length 252 [2024-11-23 23:05:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:41,483 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 371 transitions. [2024-11-23 23:05:41,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 371 transitions. [2024-11-23 23:05:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:05:41,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:41,485 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:41,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:05:41,486 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:41,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash -254195901, now seen corresponding path program 1 times [2024-11-23 23:05:41,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:41,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024886729] [2024-11-23 23:05:41,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:41,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:05:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024886729] [2024-11-23 23:05:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024886729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:05:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932690967] [2024-11-23 23:05:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:50,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:05:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:50,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:05:50,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:05:50,510 INFO L87 Difference]: Start difference. First operand 241 states and 371 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:52,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:52,001 INFO L93 Difference]: Finished difference Result 423 states and 642 transitions. [2024-11-23 23:05:52,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:05:52,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 252 [2024-11-23 23:05:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:52,005 INFO L225 Difference]: With dead ends: 423 [2024-11-23 23:05:52,005 INFO L226 Difference]: Without dead ends: 289 [2024-11-23 23:05:52,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:05:52,006 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 127 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:52,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 721 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:05:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-23 23:05:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 239. [2024-11-23 23:05:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 152 states have (on average 1.3486842105263157) internal successors, (205), 152 states have internal predecessors, (205), 82 states have call successors, (82), 4 states have call predecessors, (82), 4 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:05:52,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 369 transitions. [2024-11-23 23:05:52,045 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 369 transitions. Word has length 252 [2024-11-23 23:05:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:52,046 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 369 transitions. [2024-11-23 23:05:52,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:05:52,047 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 369 transitions. [2024-11-23 23:05:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-23 23:05:52,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:52,048 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:52,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:05:52,049 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:52,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash -51914600, now seen corresponding path program 1 times [2024-11-23 23:05:52,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:52,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884045863] [2024-11-23 23:05:52,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:07:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:12,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884045863] [2024-11-23 23:07:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884045863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:12,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:12,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:07:12,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392320372] [2024-11-23 23:07:12,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:12,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:07:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:12,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:07:12,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:07:12,339 INFO L87 Difference]: Start difference. First operand 239 states and 369 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:14,401 INFO L93 Difference]: Finished difference Result 289 states and 431 transitions. [2024-11-23 23:07:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:07:14,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 253 [2024-11-23 23:07:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:14,404 INFO L225 Difference]: With dead ends: 289 [2024-11-23 23:07:14,404 INFO L226 Difference]: Without dead ends: 287 [2024-11-23 23:07:14,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:07:14,405 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 89 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:14,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1018 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:07:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-23 23:07:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 256. [2024-11-23 23:07:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 168 states have (on average 1.3511904761904763) internal successors, (227), 168 states have internal predecessors, (227), 82 states have call successors, (82), 5 states have call predecessors, (82), 5 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:07:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 391 transitions. [2024-11-23 23:07:14,446 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 391 transitions. Word has length 253 [2024-11-23 23:07:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:14,447 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 391 transitions. [2024-11-23 23:07:14,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 391 transitions. [2024-11-23 23:07:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-23 23:07:14,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:14,449 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:14,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:07:14,449 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:14,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:14,450 INFO L85 PathProgramCache]: Analyzing trace with hash 18752604, now seen corresponding path program 1 times [2024-11-23 23:07:14,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:14,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589520002] [2024-11-23 23:07:14,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:14,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:07:14,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:14,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589520002] [2024-11-23 23:07:14,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589520002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:14,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:14,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:07:14,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121639700] [2024-11-23 23:07:14,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:14,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:07:14,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:14,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:07:14,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:14,543 INFO L87 Difference]: Start difference. First operand 256 states and 391 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:14,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:14,645 INFO L93 Difference]: Finished difference Result 460 states and 686 transitions. [2024-11-23 23:07:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:07:14,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 254 [2024-11-23 23:07:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:14,648 INFO L225 Difference]: With dead ends: 460 [2024-11-23 23:07:14,648 INFO L226 Difference]: Without dead ends: 301 [2024-11-23 23:07:14,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:14,650 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 41 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:14,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 334 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:07:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-23 23:07:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2024-11-23 23:07:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 197 states have (on average 1.3045685279187818) internal successors, (257), 198 states have internal predecessors, (257), 92 states have call successors, (92), 8 states have call predecessors, (92), 8 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 23:07:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 441 transitions. [2024-11-23 23:07:14,712 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 441 transitions. Word has length 254 [2024-11-23 23:07:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:14,713 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 441 transitions. [2024-11-23 23:07:14,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 441 transitions. [2024-11-23 23:07:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-23 23:07:14,715 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:14,715 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:14,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:07:14,715 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:14,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2021473947, now seen corresponding path program 1 times [2024-11-23 23:07:14,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:14,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235866390] [2024-11-23 23:07:14,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:07:16,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:16,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235866390] [2024-11-23 23:07:16,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235866390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:16,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:16,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:07:16,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790026324] [2024-11-23 23:07:16,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:16,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:07:16,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:16,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:07:16,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:07:16,609 INFO L87 Difference]: Start difference. First operand 298 states and 441 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:16,904 INFO L93 Difference]: Finished difference Result 379 states and 537 transitions. [2024-11-23 23:07:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:07:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 254 [2024-11-23 23:07:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:16,907 INFO L225 Difference]: With dead ends: 379 [2024-11-23 23:07:16,907 INFO L226 Difference]: Without dead ends: 377 [2024-11-23 23:07:16,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:07:16,908 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 92 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:16,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1117 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:07:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-23 23:07:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 298. [2024-11-23 23:07:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 197 states have (on average 1.3045685279187818) internal successors, (257), 198 states have internal predecessors, (257), 92 states have call successors, (92), 8 states have call predecessors, (92), 8 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 23:07:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 441 transitions. [2024-11-23 23:07:16,999 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 441 transitions. Word has length 254 [2024-11-23 23:07:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:16,999 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 441 transitions. [2024-11-23 23:07:17,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 441 transitions. [2024-11-23 23:07:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-23 23:07:17,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:17,002 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:17,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:07:17,002 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:17,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash -36527873, now seen corresponding path program 1 times [2024-11-23 23:07:17,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:17,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876654038] [2024-11-23 23:07:17,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:17,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:07:17,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:17,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876654038] [2024-11-23 23:07:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876654038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:17,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:17,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:07:17,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119326256] [2024-11-23 23:07:17,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:17,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:07:17,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:17,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:07:17,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:17,082 INFO L87 Difference]: Start difference. First operand 298 states and 441 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:17,171 INFO L93 Difference]: Finished difference Result 510 states and 740 transitions. [2024-11-23 23:07:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:07:17,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 254 [2024-11-23 23:07:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:17,174 INFO L225 Difference]: With dead ends: 510 [2024-11-23 23:07:17,175 INFO L226 Difference]: Without dead ends: 309 [2024-11-23 23:07:17,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:07:17,176 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 48 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:17,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 308 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:07:17,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-23 23:07:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 273. [2024-11-23 23:07:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 183 states have (on average 1.3169398907103824) internal successors, (241), 183 states have internal predecessors, (241), 82 states have call successors, (82), 7 states have call predecessors, (82), 7 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:07:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 405 transitions. [2024-11-23 23:07:17,228 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 405 transitions. Word has length 254 [2024-11-23 23:07:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:17,229 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 405 transitions. [2024-11-23 23:07:17,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 405 transitions. [2024-11-23 23:07:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-23 23:07:17,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:17,231 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:17,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:07:17,232 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:17,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash 495741141, now seen corresponding path program 1 times [2024-11-23 23:07:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:17,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805338442] [2024-11-23 23:07:17,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:07:32,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805338442] [2024-11-23 23:07:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805338442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:32,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:32,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:07:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964698913] [2024-11-23 23:07:32,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:32,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:07:32,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:32,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:07:32,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:07:32,629 INFO L87 Difference]: Start difference. First operand 273 states and 405 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:33,694 INFO L93 Difference]: Finished difference Result 348 states and 492 transitions. [2024-11-23 23:07:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:07:33,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 255 [2024-11-23 23:07:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:33,696 INFO L225 Difference]: With dead ends: 348 [2024-11-23 23:07:33,696 INFO L226 Difference]: Without dead ends: 346 [2024-11-23 23:07:33,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:07:33,697 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 77 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:33,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1010 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:07:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-23 23:07:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 280. [2024-11-23 23:07:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 190 states have (on average 1.3157894736842106) internal successors, (250), 190 states have internal predecessors, (250), 82 states have call successors, (82), 7 states have call predecessors, (82), 7 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:07:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 414 transitions. [2024-11-23 23:07:33,739 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 414 transitions. Word has length 255 [2024-11-23 23:07:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:33,739 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 414 transitions. [2024-11-23 23:07:33,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 414 transitions. [2024-11-23 23:07:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-23 23:07:33,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:33,741 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:33,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:07:33,741 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:33,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash 849481047, now seen corresponding path program 1 times [2024-11-23 23:07:33,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:33,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972328448] [2024-11-23 23:07:33,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:33,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:07:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972328448] [2024-11-23 23:07:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972328448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:36,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:36,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:07:36,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34959234] [2024-11-23 23:07:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:36,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:07:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:36,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:07:36,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:07:36,980 INFO L87 Difference]: Start difference. First operand 280 states and 414 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:37,459 INFO L93 Difference]: Finished difference Result 339 states and 482 transitions. [2024-11-23 23:07:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:07:37,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 255 [2024-11-23 23:07:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:37,462 INFO L225 Difference]: With dead ends: 339 [2024-11-23 23:07:37,462 INFO L226 Difference]: Without dead ends: 337 [2024-11-23 23:07:37,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:07:37,463 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 97 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:37,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1469 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:07:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-23 23:07:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 275. [2024-11-23 23:07:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 185 states have (on average 1.318918918918919) internal successors, (244), 185 states have internal predecessors, (244), 82 states have call successors, (82), 7 states have call predecessors, (82), 7 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:07:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 408 transitions. [2024-11-23 23:07:37,515 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 408 transitions. Word has length 255 [2024-11-23 23:07:37,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:37,516 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 408 transitions. [2024-11-23 23:07:37,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 408 transitions. [2024-11-23 23:07:37,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-23 23:07:37,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:37,518 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:37,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:07:37,519 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:37,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1771030880, now seen corresponding path program 1 times [2024-11-23 23:07:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005100837] [2024-11-23 23:07:37,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:07:39,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:39,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005100837] [2024-11-23 23:07:39,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005100837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:07:39,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:07:39,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:07:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186048742] [2024-11-23 23:07:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:39,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:07:39,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:39,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:07:39,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:07:39,252 INFO L87 Difference]: Start difference. First operand 275 states and 408 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:39,605 INFO L93 Difference]: Finished difference Result 346 states and 492 transitions. [2024-11-23 23:07:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:07:39,608 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 256 [2024-11-23 23:07:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:39,611 INFO L225 Difference]: With dead ends: 346 [2024-11-23 23:07:39,611 INFO L226 Difference]: Without dead ends: 344 [2024-11-23 23:07:39,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:07:39,614 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 66 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:39,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1108 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:07:39,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-23 23:07:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 285. [2024-11-23 23:07:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 195 states have (on average 1.323076923076923) internal successors, (258), 195 states have internal predecessors, (258), 82 states have call successors, (82), 7 states have call predecessors, (82), 7 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:07:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 422 transitions. [2024-11-23 23:07:39,668 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 422 transitions. Word has length 256 [2024-11-23 23:07:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:39,668 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 422 transitions. [2024-11-23 23:07:39,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:07:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 422 transitions. [2024-11-23 23:07:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-23 23:07:39,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:39,670 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:39,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:07:39,671 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:39,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:39,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1869327401, now seen corresponding path program 1 times [2024-11-23 23:07:39,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:39,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038207138] [2024-11-23 23:07:39,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:39,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:08:07,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:07,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038207138] [2024-11-23 23:08:07,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038207138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:07,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:07,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:08:07,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874243742] [2024-11-23 23:08:07,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:07,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:08:07,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:07,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:08:07,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:08:07,194 INFO L87 Difference]: Start difference. First operand 285 states and 422 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:08:08,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:08,840 INFO L93 Difference]: Finished difference Result 344 states and 493 transitions. [2024-11-23 23:08:08,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:08:08,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 256 [2024-11-23 23:08:08,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:08,843 INFO L225 Difference]: With dead ends: 344 [2024-11-23 23:08:08,843 INFO L226 Difference]: Without dead ends: 342 [2024-11-23 23:08:08,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:08:08,844 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 87 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:08,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1006 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:08:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-23 23:08:08,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 287. [2024-11-23 23:08:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 197 states have internal predecessors, (262), 82 states have call successors, (82), 7 states have call predecessors, (82), 7 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:08:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 426 transitions. [2024-11-23 23:08:08,895 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 426 transitions. Word has length 256 [2024-11-23 23:08:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:08,896 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 426 transitions. [2024-11-23 23:08:08,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:08:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 426 transitions. [2024-11-23 23:08:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-23 23:08:08,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:08,898 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:08,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:08:08,898 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:08,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash 781375089, now seen corresponding path program 1 times [2024-11-23 23:08:08,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:08,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455449755] [2024-11-23 23:08:08,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:08:08,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:08,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455449755] [2024-11-23 23:08:08,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455449755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:08,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:08,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:08:08,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357977945] [2024-11-23 23:08:08,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:08,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:08:08,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:08,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:08:08,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:08:08,990 INFO L87 Difference]: Start difference. First operand 287 states and 426 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:08:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:09,092 INFO L93 Difference]: Finished difference Result 527 states and 764 transitions. [2024-11-23 23:08:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:08:09,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2024-11-23 23:08:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:09,095 INFO L225 Difference]: With dead ends: 527 [2024-11-23 23:08:09,095 INFO L226 Difference]: Without dead ends: 341 [2024-11-23 23:08:09,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:08:09,096 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 40 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:09,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 345 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:08:09,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-23 23:08:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 295. [2024-11-23 23:08:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 205 states have (on average 1.3170731707317074) internal successors, (270), 205 states have internal predecessors, (270), 82 states have call successors, (82), 7 states have call predecessors, (82), 7 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:08:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 434 transitions. [2024-11-23 23:08:09,150 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 434 transitions. Word has length 257 [2024-11-23 23:08:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:09,150 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 434 transitions. [2024-11-23 23:08:09,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:08:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 434 transitions. [2024-11-23 23:08:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-23 23:08:09,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:09,153 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:09,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:08:09,153 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:09,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 982762422, now seen corresponding path program 1 times [2024-11-23 23:08:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409231377] [2024-11-23 23:08:09,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:08:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:09,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409231377] [2024-11-23 23:08:09,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409231377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:09,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:09,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:08:09,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495786240] [2024-11-23 23:08:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:09,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:08:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:09,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:08:09,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:08:09,245 INFO L87 Difference]: Start difference. First operand 295 states and 434 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:08:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:09,398 INFO L93 Difference]: Finished difference Result 529 states and 762 transitions. [2024-11-23 23:08:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:08:09,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2024-11-23 23:08:09,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:09,401 INFO L225 Difference]: With dead ends: 529 [2024-11-23 23:08:09,401 INFO L226 Difference]: Without dead ends: 335 [2024-11-23 23:08:09,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:08:09,402 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 43 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:09,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 314 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:08:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-23 23:08:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 295. [2024-11-23 23:08:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 205 states have internal predecessors, (268), 82 states have call successors, (82), 7 states have call predecessors, (82), 7 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:08:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 432 transitions. [2024-11-23 23:08:09,452 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 432 transitions. Word has length 257 [2024-11-23 23:08:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:09,452 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 432 transitions. [2024-11-23 23:08:09,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:08:09,453 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 432 transitions. [2024-11-23 23:08:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-23 23:08:09,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:09,454 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:09,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:08:09,455 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:09,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1861377120, now seen corresponding path program 1 times [2024-11-23 23:08:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:09,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045908770] [2024-11-23 23:08:09,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:09,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-23 23:08:12,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:12,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045908770] [2024-11-23 23:08:12,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045908770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:08:12,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:08:12,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:08:12,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178469967] [2024-11-23 23:08:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:08:12,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:08:12,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:12,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:08:12,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:08:12,915 INFO L87 Difference]: Start difference. First operand 295 states and 432 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:08:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:08:13,517 INFO L93 Difference]: Finished difference Result 360 states and 506 transitions. [2024-11-23 23:08:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:08:13,518 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2024-11-23 23:08:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:08:13,520 INFO L225 Difference]: With dead ends: 360 [2024-11-23 23:08:13,520 INFO L226 Difference]: Without dead ends: 358 [2024-11-23 23:08:13,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:08:13,521 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 116 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:08:13,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1070 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:08:13,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-23 23:08:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 289. [2024-11-23 23:08:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 199 states have (on average 1.3115577889447236) internal successors, (261), 199 states have internal predecessors, (261), 82 states have call successors, (82), 7 states have call predecessors, (82), 7 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-23 23:08:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 425 transitions. [2024-11-23 23:08:13,565 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 425 transitions. Word has length 257 [2024-11-23 23:08:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:08:13,565 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 425 transitions. [2024-11-23 23:08:13,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-23 23:08:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 425 transitions. [2024-11-23 23:08:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-23 23:08:13,567 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:08:13,567 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:08:13,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:08:13,567 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:08:13,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:08:13,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2114856667, now seen corresponding path program 1 times [2024-11-23 23:08:13,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:08:13,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036048367] [2024-11-23 23:08:13,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:13,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:08:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 24 proven. 96 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2024-11-23 23:08:14,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:08:14,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036048367] [2024-11-23 23:08:14,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036048367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:08:14,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969641800] [2024-11-23 23:08:14,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:08:14,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:08:14,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:08:14,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:08:14,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fa0b7e-3a25-4f44-8585-84c96f5c68da/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:08:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:08:14,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 23:08:14,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:09:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1080 proven. 96 refuted. 0 times theorem prover too weak. 2104 trivial. 0 not checked. [2024-11-23 23:09:25,648 INFO L312 TraceCheckSpWp]: Computing backward predicates...