./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_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_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/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_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/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_44b00baa-b077-4cfc-9ba3-d822590479ca/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 139d16f6f2adc0a53ed334bc0ef4cd475497ad47ce08b4367552becb4de333c7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:26:51,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:26:51,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:26:51,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:26:51,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:26:51,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:26:51,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:26:51,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:26:51,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:26:51,275 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:26:51,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:26:51,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:26:51,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:26:51,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:26:51,277 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:26:51,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:26:51,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:26:51,278 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:26:51,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:26:51,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:26:51,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:26:51,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:26:51,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:26:51,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:26:51,279 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:26:51,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:26:51,279 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:26:51,279 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:26:51,279 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:26:51,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:26:51,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:26:51,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:26:51,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:26:51,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:26:51,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:26:51,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:26:51,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:26:51,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:26:51,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:26:51,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:26:51,282 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:26:51,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:26:51,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:26:51,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:26:51,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:26:51,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:26:51,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:26:51,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:26:51,283 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_44b00baa-b077-4cfc-9ba3-d822590479ca/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 -> 139d16f6f2adc0a53ed334bc0ef4cd475497ad47ce08b4367552becb4de333c7 [2024-11-24 01:26:51,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:26:51,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:26:51,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:26:51,642 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:26:51,643 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:26:51,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-81.i [2024-11-24 01:26:54,551 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/data/b984621c9/6de1a47f66f844828f26a2bc4d8f55e9/FLAG4e8043d43 [2024-11-24 01:26:54,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:26:54,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-81.i [2024-11-24 01:26:54,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/data/b984621c9/6de1a47f66f844828f26a2bc4d8f55e9/FLAG4e8043d43 [2024-11-24 01:26:54,827 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/data/b984621c9/6de1a47f66f844828f26a2bc4d8f55e9 [2024-11-24 01:26:54,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:26:54,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:26:54,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:26:54,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:26:54,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:26:54,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:26:54" (1/1) ... [2024-11-24 01:26:54,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613a7dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:54, skipping insertion in model container [2024-11-24 01:26:54,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:26:54" (1/1) ... [2024-11-24 01:26:54,875 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:26:55,038 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_44b00baa-b077-4cfc-9ba3-d822590479ca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-81.i[913,926] [2024-11-24 01:26:55,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:26:55,144 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:26:55,154 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_44b00baa-b077-4cfc-9ba3-d822590479ca/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-81.i[913,926] [2024-11-24 01:26:55,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:26:55,228 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:26:55,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55 WrapperNode [2024-11-24 01:26:55,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:26:55,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:26:55,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:26:55,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:26:55,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,310 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2024-11-24 01:26:55,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:26:55,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:26:55,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:26:55,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:26:55,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,330 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,364 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:26:55,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,372 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:26:55,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:26:55,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:26:55,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:26:55,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (1/1) ... [2024-11-24 01:26:55,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:26:55,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:26:55,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:26:55,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:26:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:26:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:26:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:26:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:26:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:26:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:26:55,551 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:26:55,553 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:26:56,011 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-24 01:26:56,011 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:26:56,024 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:26:56,027 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:26:56,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:26:56 BoogieIcfgContainer [2024-11-24 01:26:56,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:26:56,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:26:56,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:26:56,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:26:56,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:26:54" (1/3) ... [2024-11-24 01:26:56,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48700a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:26:56, skipping insertion in model container [2024-11-24 01:26:56,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:26:55" (2/3) ... [2024-11-24 01:26:56,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48700a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:26:56, skipping insertion in model container [2024-11-24 01:26:56,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:26:56" (3/3) ... [2024-11-24 01:26:56,038 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-81.i [2024-11-24 01:26:56,054 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:26:56,055 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_normal_file-81.i that has 2 procedures, 77 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:26:56,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:26:56,141 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;@1aaa3534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:26:56,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:26:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 01:26:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-24 01:26:56,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:26:56,182 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:26:56,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:26:56,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:26:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 409085708, now seen corresponding path program 1 times [2024-11-24 01:26:56,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:26:56,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247263212] [2024-11-24 01:26:56,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:56,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:26:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-24 01:26:56,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:26:56,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247263212] [2024-11-24 01:26:56,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247263212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:26:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431088484] [2024-11-24 01:26:56,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:56,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:26:56,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:26:56,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:26:56,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:26:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:56,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:26:56,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:26:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-24 01:26:56,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:26:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431088484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:26:56,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:26:56,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:26:56,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241189006] [2024-11-24 01:26:56,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:26:56,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:26:56,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:26:56,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:26:56,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:26:56,918 INFO L87 Difference]: Start difference. First operand has 77 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:26:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:26:56,953 INFO L93 Difference]: Finished difference Result 147 states and 256 transitions. [2024-11-24 01:26:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:26:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 163 [2024-11-24 01:26:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:26:56,962 INFO L225 Difference]: With dead ends: 147 [2024-11-24 01:26:56,962 INFO L226 Difference]: Without dead ends: 73 [2024-11-24 01:26:56,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:26:56,970 INFO L435 NwaCegarLoop]: 111 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, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:26:56,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:26:56,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-24 01:26:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-24 01:26:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 45 states have internal predecessors, (59), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 01:26:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2024-11-24 01:26:57,014 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 163 [2024-11-24 01:26:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:26:57,015 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2024-11-24 01:26:57,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:26:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2024-11-24 01:26:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-24 01:26:57,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:26:57,021 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:26:57,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:26:57,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:26:57,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:26:57,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:26:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1193130060, now seen corresponding path program 1 times [2024-11-24 01:26:57,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:26:57,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156827531] [2024-11-24 01:26:57,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:57,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:26:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:27:14,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:14,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156827531] [2024-11-24 01:27:14,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156827531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:14,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:14,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:27:14,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181142555] [2024-11-24 01:27:14,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:14,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:27:14,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:14,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:27:14,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:27:14,702 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:18,470 INFO L93 Difference]: Finished difference Result 321 states and 480 transitions. [2024-11-24 01:27:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:27:18,471 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-24 01:27:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:18,475 INFO L225 Difference]: With dead ends: 321 [2024-11-24 01:27:18,475 INFO L226 Difference]: Without dead ends: 251 [2024-11-24 01:27:18,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:27:18,481 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 679 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:18,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 514 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 01:27:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-24 01:27:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 132. [2024-11-24 01:27:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 77 states have internal predecessors, (99), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:27:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 203 transitions. [2024-11-24 01:27:18,541 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 203 transitions. Word has length 163 [2024-11-24 01:27:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:18,542 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 203 transitions. [2024-11-24 01:27:18,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 203 transitions. [2024-11-24 01:27:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-24 01:27:18,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:18,548 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:27:18,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:27:18,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:18,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash 800103050, now seen corresponding path program 1 times [2024-11-24 01:27:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767298941] [2024-11-24 01:27:18,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:18,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:27:18,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:18,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767298941] [2024-11-24 01:27:18,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767298941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:18,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:18,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:27:18,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864347602] [2024-11-24 01:27:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:18,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:27:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:18,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:27:18,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:27:18,905 INFO L87 Difference]: Start difference. First operand 132 states and 203 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:19,000 INFO L93 Difference]: Finished difference Result 237 states and 360 transitions. [2024-11-24 01:27:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:27:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-24 01:27:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:19,006 INFO L225 Difference]: With dead ends: 237 [2024-11-24 01:27:19,009 INFO L226 Difference]: Without dead ends: 167 [2024-11-24 01:27:19,010 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 [2024-11-24 01:27:19,011 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 42 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:19,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 324 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-24 01:27:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2024-11-24 01:27:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 105 states have internal predecessors, (135), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-24 01:27:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 247 transitions. [2024-11-24 01:27:19,058 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 247 transitions. Word has length 163 [2024-11-24 01:27:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:19,061 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 247 transitions. [2024-11-24 01:27:19,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 247 transitions. [2024-11-24 01:27:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-24 01:27:19,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:19,064 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:27:19,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:27:19,066 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:19,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1894194638, now seen corresponding path program 1 times [2024-11-24 01:27:19,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:19,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602196718] [2024-11-24 01:27:19,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:27:28,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:28,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602196718] [2024-11-24 01:27:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602196718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:28,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:27:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408886188] [2024-11-24 01:27:28,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:28,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:27:28,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:28,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:27:28,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:27:28,070 INFO L87 Difference]: Start difference. First operand 164 states and 247 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:32,006 INFO L93 Difference]: Finished difference Result 372 states and 546 transitions. [2024-11-24 01:27:32,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:27:32,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-24 01:27:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:32,010 INFO L225 Difference]: With dead ends: 372 [2024-11-24 01:27:32,011 INFO L226 Difference]: Without dead ends: 270 [2024-11-24 01:27:32,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:27:32,012 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 418 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:32,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 521 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:27:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-24 01:27:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 164. [2024-11-24 01:27:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 105 states have internal predecessors, (135), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-24 01:27:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 247 transitions. [2024-11-24 01:27:32,059 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 247 transitions. Word has length 163 [2024-11-24 01:27:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:32,060 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 247 transitions. [2024-11-24 01:27:32,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 247 transitions. [2024-11-24 01:27:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-24 01:27:32,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:32,064 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:27:32,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:27:32,065 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:32,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:32,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1451295498, now seen corresponding path program 1 times [2024-11-24 01:27:32,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:32,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757561979] [2024-11-24 01:27:32,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:32,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:27:32,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757561979] [2024-11-24 01:27:32,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757561979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:32,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:32,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:27:32,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557595323] [2024-11-24 01:27:32,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:32,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:27:32,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:32,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:27:32,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:27:32,779 INFO L87 Difference]: Start difference. First operand 164 states and 247 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:33,267 INFO L93 Difference]: Finished difference Result 312 states and 467 transitions. [2024-11-24 01:27:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:27:33,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-24 01:27:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:33,271 INFO L225 Difference]: With dead ends: 312 [2024-11-24 01:27:33,271 INFO L226 Difference]: Without dead ends: 210 [2024-11-24 01:27:33,271 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 [2024-11-24 01:27:33,272 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 136 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:33,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 391 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:27:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-24 01:27:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 170. [2024-11-24 01:27:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 110 states have (on average 1.290909090909091) internal successors, (142), 111 states have internal predecessors, (142), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-24 01:27:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 254 transitions. [2024-11-24 01:27:33,316 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 254 transitions. Word has length 163 [2024-11-24 01:27:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:33,317 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 254 transitions. [2024-11-24 01:27:33,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 254 transitions. [2024-11-24 01:27:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-24 01:27:33,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:33,320 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:27:33,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:27:33,320 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:33,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:33,321 INFO L85 PathProgramCache]: Analyzing trace with hash 182012810, now seen corresponding path program 1 times [2024-11-24 01:27:33,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:33,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679361481] [2024-11-24 01:27:33,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:33,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:27:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679361481] [2024-11-24 01:27:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679361481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:41,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:27:41,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802765349] [2024-11-24 01:27:41,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:41,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:27:41,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:41,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:27:41,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:27:41,939 INFO L87 Difference]: Start difference. First operand 170 states and 254 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:44,096 INFO L93 Difference]: Finished difference Result 341 states and 498 transitions. [2024-11-24 01:27:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:27:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-24 01:27:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:44,101 INFO L225 Difference]: With dead ends: 341 [2024-11-24 01:27:44,103 INFO L226 Difference]: Without dead ends: 239 [2024-11-24 01:27:44,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:27:44,105 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 164 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:44,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 515 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:27:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-24 01:27:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 171. [2024-11-24 01:27:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 112 states have internal predecessors, (144), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-24 01:27:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 256 transitions. [2024-11-24 01:27:44,136 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 256 transitions. Word has length 163 [2024-11-24 01:27:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:44,138 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 256 transitions. [2024-11-24 01:27:44,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 256 transitions. [2024-11-24 01:27:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-24 01:27:44,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:44,140 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:27:44,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:27:44,141 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:44,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash 883077388, now seen corresponding path program 1 times [2024-11-24 01:27:44,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:44,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860905356] [2024-11-24 01:27:44,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:27:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860905356] [2024-11-24 01:27:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860905356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:52,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:52,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:27:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712230585] [2024-11-24 01:27:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:52,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:27:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:52,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:27:52,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:27:52,053 INFO L87 Difference]: Start difference. First operand 171 states and 256 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:54,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:54,242 INFO L93 Difference]: Finished difference Result 322 states and 474 transitions. [2024-11-24 01:27:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:27:54,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2024-11-24 01:27:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:54,245 INFO L225 Difference]: With dead ends: 322 [2024-11-24 01:27:54,245 INFO L226 Difference]: Without dead ends: 210 [2024-11-24 01:27:54,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:27:54,246 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 177 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:54,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 399 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:27:54,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-24 01:27:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 168. [2024-11-24 01:27:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 109 states have internal predecessors, (140), 56 states have call successors, (56), 3 states have call predecessors, (56), 3 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-24 01:27:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 252 transitions. [2024-11-24 01:27:54,270 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 252 transitions. Word has length 163 [2024-11-24 01:27:54,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:54,270 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 252 transitions. [2024-11-24 01:27:54,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:54,271 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 252 transitions. [2024-11-24 01:27:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:27:54,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:54,273 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:27:54,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:27:54,273 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:54,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1839498733, now seen corresponding path program 1 times [2024-11-24 01:27:54,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:54,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768051061] [2024-11-24 01:27:54,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:54,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:27:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:54,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768051061] [2024-11-24 01:27:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768051061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:27:54,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:27:54,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:27:54,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431632912] [2024-11-24 01:27:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:27:54,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:27:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:27:54,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:27:54,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:27:54,509 INFO L87 Difference]: Start difference. First operand 168 states and 252 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:27:54,607 INFO L93 Difference]: Finished difference Result 306 states and 450 transitions. [2024-11-24 01:27:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:27:54,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-24 01:27:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:27:54,610 INFO L225 Difference]: With dead ends: 306 [2024-11-24 01:27:54,610 INFO L226 Difference]: Without dead ends: 194 [2024-11-24 01:27:54,611 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 [2024-11-24 01:27:54,611 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 62 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:27:54,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 317 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:27:54,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-24 01:27:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 163. [2024-11-24 01:27:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.2924528301886793) internal successors, (137), 106 states have internal predecessors, (137), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:27:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 241 transitions. [2024-11-24 01:27:54,632 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 241 transitions. Word has length 164 [2024-11-24 01:27:54,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:27:54,632 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 241 transitions. [2024-11-24 01:27:54,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:27:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 241 transitions. [2024-11-24 01:27:54,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:27:54,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:27:54,635 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:27:54,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:27:54,635 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:27:54,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:27:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2062441553, now seen corresponding path program 1 times [2024-11-24 01:27:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:27:54,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747269899] [2024-11-24 01:27:54,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:54,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:28:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747269899] [2024-11-24 01:28:02,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747269899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:02,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:02,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:28:02,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366802593] [2024-11-24 01:28:02,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:02,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:28:02,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:02,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:28:02,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:28:02,556 INFO L87 Difference]: Start difference. First operand 163 states and 241 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:28:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:04,926 INFO L93 Difference]: Finished difference Result 341 states and 496 transitions. [2024-11-24 01:28:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:28:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-24 01:28:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:04,929 INFO L225 Difference]: With dead ends: 341 [2024-11-24 01:28:04,929 INFO L226 Difference]: Without dead ends: 241 [2024-11-24 01:28:04,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:28:04,931 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 237 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:04,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 478 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:28:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-24 01:28:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 171. [2024-11-24 01:28:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 114 states have internal predecessors, (149), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:28:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2024-11-24 01:28:04,953 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 164 [2024-11-24 01:28:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:04,954 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2024-11-24 01:28:04,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:28:04,954 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2024-11-24 01:28:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:28:04,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:04,956 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:04,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:28:04,956 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:04,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:04,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1531461165, now seen corresponding path program 1 times [2024-11-24 01:28:04,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:04,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989382782] [2024-11-24 01:28:04,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:04,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:28:12,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:12,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989382782] [2024-11-24 01:28:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989382782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:12,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:12,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:28:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242875893] [2024-11-24 01:28:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:12,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:28:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:12,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:28:12,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:28:12,095 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:28:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:14,211 INFO L93 Difference]: Finished difference Result 362 states and 524 transitions. [2024-11-24 01:28:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:28:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2024-11-24 01:28:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:14,214 INFO L225 Difference]: With dead ends: 362 [2024-11-24 01:28:14,214 INFO L226 Difference]: Without dead ends: 262 [2024-11-24 01:28:14,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:28:14,215 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 299 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:14,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 548 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:28:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-24 01:28:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 174. [2024-11-24 01:28:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.3076923076923077) internal successors, (153), 117 states have internal predecessors, (153), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:28:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 257 transitions. [2024-11-24 01:28:14,239 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 257 transitions. Word has length 164 [2024-11-24 01:28:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:14,240 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 257 transitions. [2024-11-24 01:28:14,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:28:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 257 transitions. [2024-11-24 01:28:14,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:28:14,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:14,242 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:14,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:28:14,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:14,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1752388881, now seen corresponding path program 1 times [2024-11-24 01:28:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597680387] [2024-11-24 01:28:14,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:14,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:28:19,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597680387] [2024-11-24 01:28:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597680387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:19,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:19,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:28:19,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498477485] [2024-11-24 01:28:19,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:19,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:28:19,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:19,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:28:19,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:28:19,786 INFO L87 Difference]: Start difference. First operand 174 states and 257 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:28:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:20,725 INFO L93 Difference]: Finished difference Result 316 states and 461 transitions. [2024-11-24 01:28:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:28:20,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-24 01:28:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:20,728 INFO L225 Difference]: With dead ends: 316 [2024-11-24 01:28:20,728 INFO L226 Difference]: Without dead ends: 216 [2024-11-24 01:28:20,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:28:20,730 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 137 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:20,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 389 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:28:20,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-24 01:28:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 171. [2024-11-24 01:28:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.3070175438596492) internal successors, (149), 114 states have internal predecessors, (149), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:28:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2024-11-24 01:28:20,764 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 164 [2024-11-24 01:28:20,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:20,764 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2024-11-24 01:28:20,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:28:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2024-11-24 01:28:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:28:20,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:20,766 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:20,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:28:20,766 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:20,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash -559635055, now seen corresponding path program 1 times [2024-11-24 01:28:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855444643] [2024-11-24 01:28:20,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:28:25,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855444643] [2024-11-24 01:28:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855444643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:25,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:25,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:28:25,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009480616] [2024-11-24 01:28:25,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:25,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:28:25,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:25,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:28:25,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:28:25,319 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:28:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:27,135 INFO L93 Difference]: Finished difference Result 426 states and 613 transitions. [2024-11-24 01:28:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:28:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-24 01:28:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:27,139 INFO L225 Difference]: With dead ends: 426 [2024-11-24 01:28:27,139 INFO L226 Difference]: Without dead ends: 318 [2024-11-24 01:28:27,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:28:27,140 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 457 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:27,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 555 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:28:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-24 01:28:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 175. [2024-11-24 01:28:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 118 states have internal predecessors, (155), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:28:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 259 transitions. [2024-11-24 01:28:27,165 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 259 transitions. Word has length 164 [2024-11-24 01:28:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:27,166 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 259 transitions. [2024-11-24 01:28:27,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:28:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 259 transitions. [2024-11-24 01:28:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:28:27,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:27,167 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:27,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:28:27,168 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:27,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash -952662065, now seen corresponding path program 1 times [2024-11-24 01:28:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647637537] [2024-11-24 01:28:27,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:27,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:28:33,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647637537] [2024-11-24 01:28:33,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647637537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:33,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:33,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:28:33,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901966328] [2024-11-24 01:28:33,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:33,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:28:33,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:33,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:28:33,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:28:33,610 INFO L87 Difference]: Start difference. First operand 175 states and 259 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:28:35,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:35,247 INFO L93 Difference]: Finished difference Result 387 states and 561 transitions. [2024-11-24 01:28:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:28:35,248 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2024-11-24 01:28:35,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:35,250 INFO L225 Difference]: With dead ends: 387 [2024-11-24 01:28:35,250 INFO L226 Difference]: Without dead ends: 279 [2024-11-24 01:28:35,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:28:35,251 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 323 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:35,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 536 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:28:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-24 01:28:35,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 177. [2024-11-24 01:28:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.325) internal successors, (159), 120 states have internal predecessors, (159), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:28:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2024-11-24 01:28:35,275 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 164 [2024-11-24 01:28:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:35,276 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2024-11-24 01:28:35,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:28:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2024-11-24 01:28:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:28:35,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:35,278 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:35,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:28:35,278 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:35,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:35,279 INFO L85 PathProgramCache]: Analyzing trace with hash 141429523, now seen corresponding path program 1 times [2024-11-24 01:28:35,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:35,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580232352] [2024-11-24 01:28:35,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:35,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:28:41,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580232352] [2024-11-24 01:28:41,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580232352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:41,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:41,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 01:28:41,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41157925] [2024-11-24 01:28:41,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:41,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:28:41,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:41,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:28:41,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:28:41,706 INFO L87 Difference]: Start difference. First operand 177 states and 263 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:28:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:43,875 INFO L93 Difference]: Finished difference Result 407 states and 589 transitions. [2024-11-24 01:28:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:28:43,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2024-11-24 01:28:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:43,878 INFO L225 Difference]: With dead ends: 407 [2024-11-24 01:28:43,878 INFO L226 Difference]: Without dead ends: 299 [2024-11-24 01:28:43,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:28:43,879 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 541 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:43,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 494 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:28:43,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-24 01:28:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 178. [2024-11-24 01:28:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 121 states have internal predecessors, (161), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:28:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2024-11-24 01:28:43,904 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 164 [2024-11-24 01:28:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:43,905 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2024-11-24 01:28:43,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:28:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2024-11-24 01:28:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:28:43,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:43,906 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:43,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:28:43,907 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:43,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -251597487, now seen corresponding path program 1 times [2024-11-24 01:28:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:43,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770777477] [2024-11-24 01:28:43,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:28:49,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:49,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770777477] [2024-11-24 01:28:49,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770777477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:49,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:49,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:28:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64981685] [2024-11-24 01:28:49,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:49,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:28:49,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:49,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:28:49,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:28:49,917 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:28:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:52,010 INFO L93 Difference]: Finished difference Result 396 states and 573 transitions. [2024-11-24 01:28:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:28:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2024-11-24 01:28:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:52,013 INFO L225 Difference]: With dead ends: 396 [2024-11-24 01:28:52,014 INFO L226 Difference]: Without dead ends: 288 [2024-11-24 01:28:52,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:28:52,017 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 217 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:52,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 718 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:28:52,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-24 01:28:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 177. [2024-11-24 01:28:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.325) internal successors, (159), 120 states have internal predecessors, (159), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:28:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2024-11-24 01:28:52,047 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 164 [2024-11-24 01:28:52,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:52,047 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2024-11-24 01:28:52,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 01:28:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2024-11-24 01:28:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:28:52,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:52,049 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:52,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:28:52,049 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:52,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1570752305, now seen corresponding path program 1 times [2024-11-24 01:28:52,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:52,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964034665] [2024-11-24 01:28:52,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:28:57,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:28:57,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964034665] [2024-11-24 01:28:57,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964034665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:57,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:28:57,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:28:57,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071599705] [2024-11-24 01:28:57,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:57,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:28:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:57,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:28:57,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:28:57,288 INFO L87 Difference]: Start difference. First operand 177 states and 263 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:28:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:57,948 INFO L93 Difference]: Finished difference Result 396 states and 575 transitions. [2024-11-24 01:28:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:28:57,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-24 01:28:57,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:57,951 INFO L225 Difference]: With dead ends: 396 [2024-11-24 01:28:57,951 INFO L226 Difference]: Without dead ends: 288 [2024-11-24 01:28:57,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:28:57,953 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 225 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:28:57,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 424 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:28:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-24 01:28:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 178. [2024-11-24 01:28:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 121 states have internal predecessors, (161), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:28:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2024-11-24 01:28:57,979 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 164 [2024-11-24 01:28:57,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:57,979 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2024-11-24 01:28:57,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:28:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2024-11-24 01:28:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:28:57,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:57,981 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:57,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:28:57,981 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:57,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:57,981 INFO L85 PathProgramCache]: Analyzing trace with hash -869687727, now seen corresponding path program 1 times [2024-11-24 01:28:57,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:57,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675866019] [2024-11-24 01:28:57,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:57,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:28:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:29:04,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:04,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675866019] [2024-11-24 01:29:04,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675866019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:04,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:04,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:29:04,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956930627] [2024-11-24 01:29:04,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:04,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:29:04,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:04,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:29:04,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:29:04,135 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:04,964 INFO L93 Difference]: Finished difference Result 356 states and 520 transitions. [2024-11-24 01:29:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:29:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-24 01:29:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:04,966 INFO L225 Difference]: With dead ends: 356 [2024-11-24 01:29:04,966 INFO L226 Difference]: Without dead ends: 246 [2024-11-24 01:29:04,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:29:04,967 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 175 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:04,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 342 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:29:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-24 01:29:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 178. [2024-11-24 01:29:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 121 states have internal predecessors, (161), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:29:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2024-11-24 01:29:04,993 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 164 [2024-11-24 01:29:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:04,994 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2024-11-24 01:29:04,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2024-11-24 01:29:04,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:29:04,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:04,995 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:04,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:29:04,996 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:04,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1262714737, now seen corresponding path program 1 times [2024-11-24 01:29:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:04,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278633712] [2024-11-24 01:29:04,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:29:05,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:05,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278633712] [2024-11-24 01:29:05,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278633712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:05,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:05,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:29:05,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614061790] [2024-11-24 01:29:05,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:05,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:29:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:05,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:29:05,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:29:05,713 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:06,332 INFO L93 Difference]: Finished difference Result 358 states and 522 transitions. [2024-11-24 01:29:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:29:06,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 164 [2024-11-24 01:29:06,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:06,335 INFO L225 Difference]: With dead ends: 358 [2024-11-24 01:29:06,335 INFO L226 Difference]: Without dead ends: 248 [2024-11-24 01:29:06,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:29:06,336 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 171 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:06,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 432 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:29:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-24 01:29:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 175. [2024-11-24 01:29:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.3305084745762712) internal successors, (157), 118 states have internal predecessors, (157), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:29:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 261 transitions. [2024-11-24 01:29:06,362 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 261 transitions. Word has length 164 [2024-11-24 01:29:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:06,362 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 261 transitions. [2024-11-24 01:29:06,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 261 transitions. [2024-11-24 01:29:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-24 01:29:06,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:06,363 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:06,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:29:06,364 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:06,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash -992432185, now seen corresponding path program 1 times [2024-11-24 01:29:06,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:06,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867316557] [2024-11-24 01:29:06,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:06,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:29:32,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:32,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867316557] [2024-11-24 01:29:32,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867316557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:32,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:32,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:29:32,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360759035] [2024-11-24 01:29:32,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:32,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:29:32,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:32,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:29:32,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:29:32,828 INFO L87 Difference]: Start difference. First operand 175 states and 261 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:34,351 INFO L93 Difference]: Finished difference Result 225 states and 323 transitions. [2024-11-24 01:29:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:29:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 165 [2024-11-24 01:29:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:34,354 INFO L225 Difference]: With dead ends: 225 [2024-11-24 01:29:34,354 INFO L226 Difference]: Without dead ends: 223 [2024-11-24 01:29:34,354 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 [2024-11-24 01:29:34,354 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 106 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:34,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 649 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:29:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-24 01:29:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 192. [2024-11-24 01:29:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.335820895522388) internal successors, (179), 134 states have internal predecessors, (179), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:29:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 283 transitions. [2024-11-24 01:29:34,393 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 283 transitions. Word has length 165 [2024-11-24 01:29:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:34,394 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 283 transitions. [2024-11-24 01:29:34,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 283 transitions. [2024-11-24 01:29:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 01:29:34,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:34,395 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:34,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:29:34,396 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:34,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash 872197999, now seen corresponding path program 1 times [2024-11-24 01:29:34,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:34,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244636510] [2024-11-24 01:29:34,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:34,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:29:34,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:34,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244636510] [2024-11-24 01:29:34,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244636510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:34,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:34,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:29:34,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000468156] [2024-11-24 01:29:34,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:34,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:29:34,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:34,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:29:34,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:34,490 INFO L87 Difference]: Start difference. First operand 192 states and 283 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:34,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:34,581 INFO L93 Difference]: Finished difference Result 368 states and 527 transitions. [2024-11-24 01:29:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:34,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 166 [2024-11-24 01:29:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:34,584 INFO L225 Difference]: With dead ends: 368 [2024-11-24 01:29:34,585 INFO L226 Difference]: Without dead ends: 241 [2024-11-24 01:29:34,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:34,586 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 47 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:34,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 201 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:29:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-24 01:29:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 238. [2024-11-24 01:29:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 166 states have (on average 1.283132530120482) internal successors, (213), 167 states have internal predecessors, (213), 62 states have call successors, (62), 9 states have call predecessors, (62), 9 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-24 01:29:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 337 transitions. [2024-11-24 01:29:34,638 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 337 transitions. Word has length 166 [2024-11-24 01:29:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:34,639 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 337 transitions. [2024-11-24 01:29:34,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 337 transitions. [2024-11-24 01:29:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 01:29:34,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:34,640 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:34,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:29:34,641 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:34,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:34,641 INFO L85 PathProgramCache]: Analyzing trace with hash 927478476, now seen corresponding path program 1 times [2024-11-24 01:29:34,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:34,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238972626] [2024-11-24 01:29:34,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:34,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:29:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:29:34,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:29:34,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238972626] [2024-11-24 01:29:34,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238972626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:29:34,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:29:34,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:29:34,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059786154] [2024-11-24 01:29:34,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:29:34,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:29:34,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:29:34,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:29:34,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:34,739 INFO L87 Difference]: Start difference. First operand 238 states and 337 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:29:34,835 INFO L93 Difference]: Finished difference Result 414 states and 580 transitions. [2024-11-24 01:29:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:29:34,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 166 [2024-11-24 01:29:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:29:34,837 INFO L225 Difference]: With dead ends: 414 [2024-11-24 01:29:34,838 INFO L226 Difference]: Without dead ends: 245 [2024-11-24 01:29:34,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:29:34,839 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 41 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:29:34,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 226 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:29:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-24 01:29:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 209. [2024-11-24 01:29:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 149 states have (on average 1.2953020134228188) internal successors, (193), 149 states have internal predecessors, (193), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:29:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 297 transitions. [2024-11-24 01:29:34,875 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 297 transitions. Word has length 166 [2024-11-24 01:29:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:29:34,876 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 297 transitions. [2024-11-24 01:29:34,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:29:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 297 transitions. [2024-11-24 01:29:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 01:29:34,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:29:34,877 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:29:34,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:29:34,877 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:29:34,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:29:34,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1364767477, now seen corresponding path program 1 times [2024-11-24 01:29:34,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:29:34,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522267926] [2024-11-24 01:29:34,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:29:34,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:29:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:31:00,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522267926] [2024-11-24 01:31:00,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522267926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:00,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:00,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:31:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772345659] [2024-11-24 01:31:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:00,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:31:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:00,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:31:00,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:31:00,189 INFO L87 Difference]: Start difference. First operand 209 states and 297 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:31:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:01,133 INFO L93 Difference]: Finished difference Result 275 states and 373 transitions. [2024-11-24 01:31:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:31:01,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 166 [2024-11-24 01:31:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:01,135 INFO L225 Difference]: With dead ends: 275 [2024-11-24 01:31:01,135 INFO L226 Difference]: Without dead ends: 273 [2024-11-24 01:31:01,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:31:01,139 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 64 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:01,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 877 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:31:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-24 01:31:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 209. [2024-11-24 01:31:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 149 states have (on average 1.2953020134228188) internal successors, (193), 149 states have internal predecessors, (193), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:31:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 297 transitions. [2024-11-24 01:31:01,177 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 297 transitions. Word has length 166 [2024-11-24 01:31:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:01,178 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 297 transitions. [2024-11-24 01:31:01,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:31:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 297 transitions. [2024-11-24 01:31:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 01:31:01,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:01,179 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:31:01,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:31:01,180 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:01,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:01,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1398527964, now seen corresponding path program 1 times [2024-11-24 01:31:01,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:01,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771412912] [2024-11-24 01:31:01,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:01,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:31:15,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:31:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771412912] [2024-11-24 01:31:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771412912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:15,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:15,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:31:15,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883958278] [2024-11-24 01:31:15,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:15,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:31:15,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:31:15,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:31:15,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:31:15,719 INFO L87 Difference]: Start difference. First operand 209 states and 297 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:31:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:17,070 INFO L93 Difference]: Finished difference Result 284 states and 384 transitions. [2024-11-24 01:31:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:31:17,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 167 [2024-11-24 01:31:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:17,072 INFO L225 Difference]: With dead ends: 284 [2024-11-24 01:31:17,072 INFO L226 Difference]: Without dead ends: 282 [2024-11-24 01:31:17,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:31:17,073 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 77 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 686 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 [2024-11-24 01:31:17,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 686 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:31:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-24 01:31:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2024-11-24 01:31:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 156 states have (on average 1.294871794871795) internal successors, (202), 156 states have internal predecessors, (202), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:31:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 306 transitions. [2024-11-24 01:31:17,138 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 306 transitions. Word has length 167 [2024-11-24 01:31:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:17,139 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 306 transitions. [2024-11-24 01:31:17,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:31:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 306 transitions. [2024-11-24 01:31:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 01:31:17,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:17,140 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:31:17,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:31:17,141 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:31:17,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1256034532, now seen corresponding path program 1 times [2024-11-24 01:31:17,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:31:17,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978468537] [2024-11-24 01:31:17,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:17,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:31:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:32:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978468537] [2024-11-24 01:32:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978468537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:09,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:09,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:32:09,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283683134] [2024-11-24 01:32:09,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:09,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:32:09,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:09,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:32:09,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:32:09,676 INFO L87 Difference]: Start difference. First operand 216 states and 306 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:10,864 INFO L93 Difference]: Finished difference Result 275 states and 374 transitions. [2024-11-24 01:32:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:32:10,864 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 167 [2024-11-24 01:32:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:10,866 INFO L225 Difference]: With dead ends: 275 [2024-11-24 01:32:10,866 INFO L226 Difference]: Without dead ends: 273 [2024-11-24 01:32:10,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:32:10,867 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 97 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:10,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1034 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:32:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-24 01:32:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 211. [2024-11-24 01:32:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 151 states have (on average 1.2980132450331126) internal successors, (196), 151 states have internal predecessors, (196), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:32:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 300 transitions. [2024-11-24 01:32:10,910 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 300 transitions. Word has length 167 [2024-11-24 01:32:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:10,911 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 300 transitions. [2024-11-24 01:32:10,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 300 transitions. [2024-11-24 01:32:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-24 01:32:10,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:10,912 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:10,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:32:10,913 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:10,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1116736592, now seen corresponding path program 1 times [2024-11-24 01:32:10,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:10,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542448014] [2024-11-24 01:32:10,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:10,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:32:12,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:12,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542448014] [2024-11-24 01:32:12,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542448014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:12,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:12,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:32:12,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581759822] [2024-11-24 01:32:12,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:12,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:32:12,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:12,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:32:12,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:32:12,942 INFO L87 Difference]: Start difference. First operand 211 states and 300 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:13,321 INFO L93 Difference]: Finished difference Result 282 states and 384 transitions. [2024-11-24 01:32:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:32:13,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 168 [2024-11-24 01:32:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:13,323 INFO L225 Difference]: With dead ends: 282 [2024-11-24 01:32:13,323 INFO L226 Difference]: Without dead ends: 280 [2024-11-24 01:32:13,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:32:13,324 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 66 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:13,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 784 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:32:13,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-24 01:32:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 221. [2024-11-24 01:32:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 161 states have (on average 1.3043478260869565) internal successors, (210), 161 states have internal predecessors, (210), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:32:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 314 transitions. [2024-11-24 01:32:13,369 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 314 transitions. Word has length 168 [2024-11-24 01:32:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:13,369 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 314 transitions. [2024-11-24 01:32:13,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 314 transitions. [2024-11-24 01:32:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-24 01:32:13,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:13,371 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:13,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 01:32:13,372 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:13,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2143895977, now seen corresponding path program 1 times [2024-11-24 01:32:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670391407] [2024-11-24 01:32:13,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:32:45,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:45,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670391407] [2024-11-24 01:32:45,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670391407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:45,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:45,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:32:45,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320752334] [2024-11-24 01:32:45,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:45,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:32:45,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:45,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:32:45,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:32:45,370 INFO L87 Difference]: Start difference. First operand 221 states and 314 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:47,261 INFO L93 Difference]: Finished difference Result 280 states and 385 transitions. [2024-11-24 01:32:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:32:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 168 [2024-11-24 01:32:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:47,262 INFO L225 Difference]: With dead ends: 280 [2024-11-24 01:32:47,263 INFO L226 Difference]: Without dead ends: 278 [2024-11-24 01:32:47,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:32:47,263 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 85 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:47,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 952 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:32:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-24 01:32:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 223. [2024-11-24 01:32:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 163 states have (on average 1.312883435582822) internal successors, (214), 163 states have internal predecessors, (214), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:32:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 318 transitions. [2024-11-24 01:32:47,301 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 318 transitions. Word has length 168 [2024-11-24 01:32:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:47,301 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 318 transitions. [2024-11-24 01:32:47,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 318 transitions. [2024-11-24 01:32:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 01:32:47,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:47,302 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:47,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 01:32:47,302 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:47,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1454896608, now seen corresponding path program 1 times [2024-11-24 01:32:47,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748397458] [2024-11-24 01:32:47,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:32:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:47,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748397458] [2024-11-24 01:32:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748397458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:32:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879711059] [2024-11-24 01:32:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:47,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:32:47,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:47,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:32:47,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:32:47,355 INFO L87 Difference]: Start difference. First operand 223 states and 318 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:47,435 INFO L93 Difference]: Finished difference Result 431 states and 602 transitions. [2024-11-24 01:32:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:32:47,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2024-11-24 01:32:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:47,437 INFO L225 Difference]: With dead ends: 431 [2024-11-24 01:32:47,437 INFO L226 Difference]: Without dead ends: 277 [2024-11-24 01:32:47,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:32:47,438 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 40 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:47,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 237 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:32:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-24 01:32:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 231. [2024-11-24 01:32:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.2982456140350878) internal successors, (222), 171 states have internal predecessors, (222), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:32:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2024-11-24 01:32:47,485 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 169 [2024-11-24 01:32:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:47,485 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2024-11-24 01:32:47,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2024-11-24 01:32:47,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 01:32:47,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:47,486 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:47,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 01:32:47,487 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:47,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1656283941, now seen corresponding path program 1 times [2024-11-24 01:32:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:47,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179125146] [2024-11-24 01:32:47,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:47,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:32:47,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179125146] [2024-11-24 01:32:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179125146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:47,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:32:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583763286] [2024-11-24 01:32:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:47,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:32:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:47,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:32:47,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:32:47,542 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:47,625 INFO L93 Difference]: Finished difference Result 433 states and 600 transitions. [2024-11-24 01:32:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:32:47,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2024-11-24 01:32:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:47,628 INFO L225 Difference]: With dead ends: 433 [2024-11-24 01:32:47,628 INFO L226 Difference]: Without dead ends: 271 [2024-11-24 01:32:47,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:32:47,629 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 43 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:47,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 206 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:32:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-24 01:32:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 231. [2024-11-24 01:32:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.286549707602339) internal successors, (220), 171 states have internal predecessors, (220), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:32:47,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 324 transitions. [2024-11-24 01:32:47,671 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 324 transitions. Word has length 169 [2024-11-24 01:32:47,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:47,672 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 324 transitions. [2024-11-24 01:32:47,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 324 transitions. [2024-11-24 01:32:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 01:32:47,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:47,673 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:47,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 01:32:47,673 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:47,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:47,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1717250189, now seen corresponding path program 1 times [2024-11-24 01:32:47,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:47,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145151536] [2024-11-24 01:32:47,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:47,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 01:32:51,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145151536] [2024-11-24 01:32:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145151536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:51,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:51,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:32:51,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321366761] [2024-11-24 01:32:51,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:51,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:32:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:51,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:32:51,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:32:51,037 INFO L87 Difference]: Start difference. First operand 231 states and 324 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:51,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:51,547 INFO L93 Difference]: Finished difference Result 296 states and 398 transitions. [2024-11-24 01:32:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:32:51,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2024-11-24 01:32:51,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:51,550 INFO L225 Difference]: With dead ends: 296 [2024-11-24 01:32:51,550 INFO L226 Difference]: Without dead ends: 294 [2024-11-24 01:32:51,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:32:51,551 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 95 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:51,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 854 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:32:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-24 01:32:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 225. [2024-11-24 01:32:51,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 165 states have (on average 1.290909090909091) internal successors, (213), 165 states have internal predecessors, (213), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 01:32:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 317 transitions. [2024-11-24 01:32:51,599 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 317 transitions. Word has length 169 [2024-11-24 01:32:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:51,599 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 317 transitions. [2024-11-24 01:32:51,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 01:32:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 317 transitions. [2024-11-24 01:32:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-24 01:32:51,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:51,601 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:51,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-24 01:32:51,601 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:51,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:51,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1519187211, now seen corresponding path program 1 times [2024-11-24 01:32:51,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:51,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229040829] [2024-11-24 01:32:51,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:51,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-24 01:32:52,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:52,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229040829] [2024-11-24 01:32:52,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229040829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:52,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522626237] [2024-11-24 01:32:52,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:52,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:52,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:52,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:52,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44b00baa-b077-4cfc-9ba3-d822590479ca/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:32:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:52,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 01:32:52,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2024-11-24 01:34:09,084 INFO L312 TraceCheckSpWp]: Computing backward predicates...