./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya --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 ebeacfd453f434fdf714d7b079047e83de79a1e641783287d3b5f33f6eefdc0e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:53:40,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:53:40,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:53:40,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:53:40,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:53:40,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:53:40,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:53:40,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:53:40,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:53:40,389 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:53:40,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:53:40,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:53:40,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:53:40,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:53:40,392 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:53:40,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:53:40,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:53:40,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:53:40,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:53:40,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:53:40,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:53:40,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:53:40,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:53:40,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:53:40,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:53:40,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:53:40,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:53:40,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:53:40,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:53:40,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:53:40,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:53:40,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:53:40,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:53:40,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:53:40,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:53:40,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:53:40,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:53:40,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:53:40,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:53:40,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:53:40,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:53:40,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:53:40,404 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebeacfd453f434fdf714d7b079047e83de79a1e641783287d3b5f33f6eefdc0e [2023-11-29 02:53:40,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:53:40,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:53:40,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:53:40,663 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:53:40,663 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:53:40,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-1.c [2023-11-29 02:53:43,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:53:44,045 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:53:44,046 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-1.c [2023-11-29 02:53:44,097 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/data/e752408d9/d48af73677f74768a6387d14d019dd1c/FLAGbac3c1299 [2023-11-29 02:53:44,112 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/data/e752408d9/d48af73677f74768a6387d14d019dd1c [2023-11-29 02:53:44,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:53:44,116 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:53:44,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:53:44,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:53:44,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:53:44,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421f639e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:44, skipping insertion in model container [2023-11-29 02:53:44,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:53:44" (1/1) ... [2023-11-29 02:53:44,371 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:53:46,118 WARN L240 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_cf8a6386-525f-4544-bde5-b3aac7580b10/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-1.c[380323,380336] [2023-11-29 02:53:46,144 WARN L240 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_cf8a6386-525f-4544-bde5-b3aac7580b10/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-1.c[383339,383352] [2023-11-29 02:53:46,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:53:46,445 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:53:47,354 WARN L240 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_cf8a6386-525f-4544-bde5-b3aac7580b10/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-1.c[380323,380336] [2023-11-29 02:53:47,360 WARN L240 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_cf8a6386-525f-4544-bde5-b3aac7580b10/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-1.c[383339,383352] [2023-11-29 02:53:47,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:53:47,493 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:53:47,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47 WrapperNode [2023-11-29 02:53:47,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:53:47,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:53:47,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:53:47,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:53:47,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:47,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:47,995 INFO L138 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13114 [2023-11-29 02:53:47,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:53:47,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:53:47,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:53:47,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:53:48,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,147 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]. [2023-11-29 02:53:48,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:53:48,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:53:48,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:53:48,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:53:48,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (1/1) ... [2023-11-29 02:53:48,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:53:48,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:53:48,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:53:48,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf8a6386-525f-4544-bde5-b3aac7580b10/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:53:48,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:53:48,486 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-29 02:53:48,486 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-29 02:53:48,486 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 02:53:48,486 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 02:53:48,486 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-29 02:53:48,486 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-29 02:53:48,486 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-29 02:53:48,487 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-29 02:53:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-29 02:53:48,487 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-29 02:53:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 02:53:48,487 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 02:53:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-29 02:53:48,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-29 02:53:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:53:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:53:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:53:48,657 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:53:48,660 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:53:56,411 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:53:56,514 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:53:56,514 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-29 02:53:56,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:53:56 BoogieIcfgContainer [2023-11-29 02:53:56,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:53:56,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:53:56,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:53:56,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:53:56,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:53:44" (1/3) ... [2023-11-29 02:53:56,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c91ec2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:53:56, skipping insertion in model container [2023-11-29 02:53:56,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:53:47" (2/3) ... [2023-11-29 02:53:56,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c91ec2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:53:56, skipping insertion in model container [2023-11-29 02:53:56,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:53:56" (3/3) ... [2023-11-29 02:53:56,526 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.10.cil-1.c [2023-11-29 02:53:56,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:53:56,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:53:56,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:53:56,647 INFO L357 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, mHoare=true, 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;@3dcb3d3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:53:56,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:53:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 2433 states, 2397 states have (on average 1.8777638715060492) internal successors, (4501), 2402 states have internal predecessors, (4501), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 02:53:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:53:56,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:53:56,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:53:56,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:53:56,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:53:56,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1699658596, now seen corresponding path program 1 times [2023-11-29 02:53:56,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:53:56,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018245188] [2023-11-29 02:53:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:56,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:53:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:53:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:53:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:53:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:57,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:53:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:53:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:53:57,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:53:57,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018245188] [2023-11-29 02:53:57,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018245188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:53:57,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:53:57,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:53:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261904108] [2023-11-29 02:53:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:53:57,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:53:57,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:53:57,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:53:57,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:53:57,300 INFO L87 Difference]: Start difference. First operand has 2433 states, 2397 states have (on average 1.8777638715060492) internal successors, (4501), 2402 states have internal predecessors, (4501), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:53:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:53:59,415 INFO L93 Difference]: Finished difference Result 4967 states and 9286 transitions. [2023-11-29 02:53:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:53:59,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:53:59,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:53:59,449 INFO L225 Difference]: With dead ends: 4967 [2023-11-29 02:53:59,450 INFO L226 Difference]: Without dead ends: 2538 [2023-11-29 02:53:59,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:53:59,463 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 851 mSDsluCounter, 12178 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 16408 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:53:59,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 16408 Invalid, 968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:53:59,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-11-29 02:53:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2428. [2023-11-29 02:53:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2394 states have (on average 1.840016708437761) internal successors, (4405), 2397 states have internal predecessors, (4405), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 02:53:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 4455 transitions. [2023-11-29 02:53:59,623 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 4455 transitions. Word has length 142 [2023-11-29 02:53:59,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:53:59,624 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 4455 transitions. [2023-11-29 02:53:59,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:53:59,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 4455 transitions. [2023-11-29 02:53:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:53:59,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:53:59,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:53:59,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:53:59,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:53:59,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:53:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1154786022, now seen corresponding path program 1 times [2023-11-29 02:53:59,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:53:59,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054520711] [2023-11-29 02:53:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:53:59,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:53:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:53:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:53:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:53:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054520711] [2023-11-29 02:54:00,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054520711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:00,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:00,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:00,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951138908] [2023-11-29 02:54:00,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:00,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:00,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:00,086 INFO L87 Difference]: Start difference. First operand 2428 states and 4455 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:04,176 INFO L93 Difference]: Finished difference Result 3266 states and 5862 transitions. [2023-11-29 02:54:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:54:04,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:04,197 INFO L225 Difference]: With dead ends: 3266 [2023-11-29 02:54:04,197 INFO L226 Difference]: Without dead ends: 2975 [2023-11-29 02:54:04,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:54:04,201 INFO L413 NwaCegarLoop]: 4383 mSDtfsCounter, 5177 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 3307 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5194 SdHoareTripleChecker+Valid, 21619 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:04,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5194 Valid, 21619 Invalid, 3373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3307 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 02:54:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2023-11-29 02:54:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2736. [2023-11-29 02:54:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2673 states have (on average 1.8204264870931537) internal successors, (4866), 2678 states have internal predecessors, (4866), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2023-11-29 02:54:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4965 transitions. [2023-11-29 02:54:04,311 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4965 transitions. Word has length 142 [2023-11-29 02:54:04,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:04,312 INFO L495 AbstractCegarLoop]: Abstraction has 2736 states and 4965 transitions. [2023-11-29 02:54:04,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4965 transitions. [2023-11-29 02:54:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:04,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:04,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:04,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:54:04,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:04,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1089772376, now seen corresponding path program 1 times [2023-11-29 02:54:04,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:04,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805263445] [2023-11-29 02:54:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:04,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:04,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:04,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805263445] [2023-11-29 02:54:04,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805263445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:04,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:04,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:04,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159783775] [2023-11-29 02:54:04,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:04,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:04,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:04,646 INFO L87 Difference]: Start difference. First operand 2736 states and 4965 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:08,072 INFO L93 Difference]: Finished difference Result 4324 states and 7612 transitions. [2023-11-29 02:54:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:54:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:08,091 INFO L225 Difference]: With dead ends: 4324 [2023-11-29 02:54:08,091 INFO L226 Difference]: Without dead ends: 3727 [2023-11-29 02:54:08,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:54:08,095 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 5218 mSDsluCounter, 17172 mSDsCounter, 0 mSdLazyCounter, 2999 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5235 SdHoareTripleChecker+Valid, 21504 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:08,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5235 Valid, 21504 Invalid, 3073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2999 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 02:54:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2023-11-29 02:54:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3300. [2023-11-29 02:54:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.7886970172684458) internal successors, (5697), 3192 states have internal predecessors, (5697), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-29 02:54:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5882 transitions. [2023-11-29 02:54:08,198 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5882 transitions. Word has length 142 [2023-11-29 02:54:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:08,199 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5882 transitions. [2023-11-29 02:54:08,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5882 transitions. [2023-11-29 02:54:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:08,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:08,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:08,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:54:08,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:08,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1577819482, now seen corresponding path program 1 times [2023-11-29 02:54:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:08,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610130610] [2023-11-29 02:54:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:08,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610130610] [2023-11-29 02:54:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610130610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:08,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:08,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929738811] [2023-11-29 02:54:08,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:08,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:08,489 INFO L87 Difference]: Start difference. First operand 3300 states and 5882 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:10,456 INFO L93 Difference]: Finished difference Result 4901 states and 8568 transitions. [2023-11-29 02:54:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:54:10,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:10,475 INFO L225 Difference]: With dead ends: 4901 [2023-11-29 02:54:10,475 INFO L226 Difference]: Without dead ends: 3738 [2023-11-29 02:54:10,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:54:10,480 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4885 mSDsluCounter, 16532 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 20718 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:10,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 20718 Invalid, 1705 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:54:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2023-11-29 02:54:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3300. [2023-11-29 02:54:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.78712715855573) internal successors, (5692), 3192 states have internal predecessors, (5692), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-29 02:54:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5877 transitions. [2023-11-29 02:54:10,648 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5877 transitions. Word has length 142 [2023-11-29 02:54:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:10,648 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5877 transitions. [2023-11-29 02:54:10,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:10,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5877 transitions. [2023-11-29 02:54:10,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:10,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:10,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:10,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:54:10,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:10,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash 485184280, now seen corresponding path program 1 times [2023-11-29 02:54:10,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:10,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453115548] [2023-11-29 02:54:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:10,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:10,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:10,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453115548] [2023-11-29 02:54:10,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453115548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:10,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:10,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:10,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616418313] [2023-11-29 02:54:10,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:10,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:10,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:10,981 INFO L87 Difference]: Start difference. First operand 3300 states and 5877 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:12,799 INFO L93 Difference]: Finished difference Result 4897 states and 8547 transitions. [2023-11-29 02:54:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:54:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:12,818 INFO L225 Difference]: With dead ends: 4897 [2023-11-29 02:54:12,819 INFO L226 Difference]: Without dead ends: 3734 [2023-11-29 02:54:12,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:54:12,823 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4883 mSDsluCounter, 16532 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 20718 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:12,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4901 Valid, 20718 Invalid, 1689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:54:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2023-11-29 02:54:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3300. [2023-11-29 02:54:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.785557299843014) internal successors, (5687), 3192 states have internal predecessors, (5687), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-29 02:54:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5872 transitions. [2023-11-29 02:54:12,913 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5872 transitions. Word has length 142 [2023-11-29 02:54:12,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:12,914 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5872 transitions. [2023-11-29 02:54:12,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5872 transitions. [2023-11-29 02:54:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:12,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:12,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:12,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:54:12,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:12,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash -796988006, now seen corresponding path program 1 times [2023-11-29 02:54:12,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:12,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854015908] [2023-11-29 02:54:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:12,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:13,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:13,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854015908] [2023-11-29 02:54:13,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854015908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:13,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:13,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601681108] [2023-11-29 02:54:13,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:13,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:13,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:13,143 INFO L87 Difference]: Start difference. First operand 3300 states and 5872 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:14,969 INFO L93 Difference]: Finished difference Result 4892 states and 8524 transitions. [2023-11-29 02:54:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:54:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:14,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:14,991 INFO L225 Difference]: With dead ends: 4892 [2023-11-29 02:54:14,991 INFO L226 Difference]: Without dead ends: 3729 [2023-11-29 02:54:14,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:54:14,997 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 5011 mSDsluCounter, 12425 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 16611 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:14,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 16611 Invalid, 1542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:54:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2023-11-29 02:54:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3300. [2023-11-29 02:54:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.7839874411302983) internal successors, (5682), 3192 states have internal predecessors, (5682), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-29 02:54:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5867 transitions. [2023-11-29 02:54:15,117 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5867 transitions. Word has length 142 [2023-11-29 02:54:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:15,117 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5867 transitions. [2023-11-29 02:54:15,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5867 transitions. [2023-11-29 02:54:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:15,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:15,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:15,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:54:15,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:15,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:15,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1655503576, now seen corresponding path program 1 times [2023-11-29 02:54:15,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:15,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13649773] [2023-11-29 02:54:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:15,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:15,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:15,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13649773] [2023-11-29 02:54:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13649773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:15,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906730759] [2023-11-29 02:54:15,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:15,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:15,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:15,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:15,401 INFO L87 Difference]: Start difference. First operand 3300 states and 5867 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:18,879 INFO L93 Difference]: Finished difference Result 6373 states and 10927 transitions. [2023-11-29 02:54:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:54:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:18,906 INFO L225 Difference]: With dead ends: 6373 [2023-11-29 02:54:18,906 INFO L226 Difference]: Without dead ends: 5212 [2023-11-29 02:54:18,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:54:18,911 INFO L413 NwaCegarLoop]: 4379 mSDtfsCounter, 5168 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5185 SdHoareTripleChecker+Valid, 21615 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:18,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5185 Valid, 21615 Invalid, 3276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:54:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2023-11-29 02:54:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4439. [2023-11-29 02:54:19,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 4220 states have (on average 1.740047393364929) internal successors, (7343), 4231 states have internal predecessors, (7343), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2023-11-29 02:54:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 7706 transitions. [2023-11-29 02:54:19,038 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 7706 transitions. Word has length 142 [2023-11-29 02:54:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:19,038 INFO L495 AbstractCegarLoop]: Abstraction has 4439 states and 7706 transitions. [2023-11-29 02:54:19,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 7706 transitions. [2023-11-29 02:54:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:19,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:19,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:19,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:54:19,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:19,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash -66499110, now seen corresponding path program 1 times [2023-11-29 02:54:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:19,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348147078] [2023-11-29 02:54:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:19,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:19,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:19,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:19,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348147078] [2023-11-29 02:54:19,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348147078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:19,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:19,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:19,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068160928] [2023-11-29 02:54:19,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:19,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:19,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:19,265 INFO L87 Difference]: Start difference. First operand 4439 states and 7706 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:20,939 INFO L93 Difference]: Finished difference Result 7548 states and 12863 transitions. [2023-11-29 02:54:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:54:20,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:20,954 INFO L225 Difference]: With dead ends: 7548 [2023-11-29 02:54:20,955 INFO L226 Difference]: Without dead ends: 5246 [2023-11-29 02:54:20,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:54:20,961 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 5016 mSDsluCounter, 12425 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 16611 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:20,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 16611 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:54:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2023-11-29 02:54:21,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 4439. [2023-11-29 02:54:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 4220 states have (on average 1.7379146919431279) internal successors, (7334), 4231 states have internal predecessors, (7334), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2023-11-29 02:54:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 7697 transitions. [2023-11-29 02:54:21,144 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 7697 transitions. Word has length 142 [2023-11-29 02:54:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:21,144 INFO L495 AbstractCegarLoop]: Abstraction has 4439 states and 7697 transitions. [2023-11-29 02:54:21,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 7697 transitions. [2023-11-29 02:54:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:21,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:21,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:21,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:54:21,150 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:21,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash -399142248, now seen corresponding path program 1 times [2023-11-29 02:54:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:21,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978164215] [2023-11-29 02:54:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:21,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:21,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978164215] [2023-11-29 02:54:21,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978164215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:21,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205987977] [2023-11-29 02:54:21,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:21,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:21,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:21,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:21,421 INFO L87 Difference]: Start difference. First operand 4439 states and 7697 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:25,057 INFO L93 Difference]: Finished difference Result 10480 states and 17612 transitions. [2023-11-29 02:54:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:54:25,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:25,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:25,081 INFO L225 Difference]: With dead ends: 10480 [2023-11-29 02:54:25,081 INFO L226 Difference]: Without dead ends: 8180 [2023-11-29 02:54:25,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:54:25,089 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 5200 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 21616 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:25,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 21616 Invalid, 3161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 3093 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:54:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2023-11-29 02:54:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 6739. [2023-11-29 02:54:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6739 states, 6312 states have (on average 1.692173637515843) internal successors, (10681), 6331 states have internal predecessors, (10681), 313 states have call successors, (313), 97 states have call predecessors, (313), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2023-11-29 02:54:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6739 states to 6739 states and 11418 transitions. [2023-11-29 02:54:25,324 INFO L78 Accepts]: Start accepts. Automaton has 6739 states and 11418 transitions. Word has length 142 [2023-11-29 02:54:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:25,324 INFO L495 AbstractCegarLoop]: Abstraction has 6739 states and 11418 transitions. [2023-11-29 02:54:25,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6739 states and 11418 transitions. [2023-11-29 02:54:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:25,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:25,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:25,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:54:25,329 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:25,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1602744022, now seen corresponding path program 1 times [2023-11-29 02:54:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:25,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682650007] [2023-11-29 02:54:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:25,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682650007] [2023-11-29 02:54:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682650007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:25,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:25,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:25,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150366632] [2023-11-29 02:54:25,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:25,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:25,563 INFO L87 Difference]: Start difference. First operand 6739 states and 11418 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:29,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:29,100 INFO L93 Difference]: Finished difference Result 18724 states and 31133 transitions. [2023-11-29 02:54:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:54:29,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:29,143 INFO L225 Difference]: With dead ends: 18724 [2023-11-29 02:54:29,143 INFO L226 Difference]: Without dead ends: 14124 [2023-11-29 02:54:29,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:54:29,162 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 5226 mSDsluCounter, 17172 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5243 SdHoareTripleChecker+Valid, 21504 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:29,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5243 Valid, 21504 Invalid, 2911 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 02:54:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14124 states. [2023-11-29 02:54:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14124 to 11355. [2023-11-29 02:54:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11355 states, 10512 states have (on average 1.65515601217656) internal successors, (17399), 10547 states have internal predecessors, (17399), 617 states have call successors, (617), 193 states have call predecessors, (617), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2023-11-29 02:54:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11355 states to 11355 states and 18938 transitions. [2023-11-29 02:54:29,611 INFO L78 Accepts]: Start accepts. Automaton has 11355 states and 18938 transitions. Word has length 142 [2023-11-29 02:54:29,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:29,611 INFO L495 AbstractCegarLoop]: Abstraction has 11355 states and 18938 transitions. [2023-11-29 02:54:29,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 11355 states and 18938 transitions. [2023-11-29 02:54:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:29,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:29,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:29,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:54:29,620 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:29,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash -965078312, now seen corresponding path program 1 times [2023-11-29 02:54:29,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334484980] [2023-11-29 02:54:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:29,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:29,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334484980] [2023-11-29 02:54:29,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334484980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:29,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:29,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:29,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35561465] [2023-11-29 02:54:29,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:29,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:29,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:29,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:29,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:29,843 INFO L87 Difference]: Start difference. First operand 11355 states and 18938 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:34,027 INFO L93 Difference]: Finished difference Result 39308 states and 64993 transitions. [2023-11-29 02:54:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:54:34,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:34,106 INFO L225 Difference]: With dead ends: 39308 [2023-11-29 02:54:34,106 INFO L226 Difference]: Without dead ends: 30092 [2023-11-29 02:54:34,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:54:34,139 INFO L413 NwaCegarLoop]: 4378 mSDtfsCounter, 5566 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5594 SdHoareTripleChecker+Valid, 21609 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:34,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5594 Valid, 21609 Invalid, 3128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 02:54:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30092 states. [2023-11-29 02:54:34,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30092 to 20555. [2023-11-29 02:54:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20555 states, 18912 states have (on average 1.6312923011844331) internal successors, (30851), 18979 states have internal predecessors, (30851), 1193 states have call successors, (1193), 385 states have call predecessors, (1193), 448 states have return successors, (2048), 1254 states have call predecessors, (2048), 1191 states have call successors, (2048) [2023-11-29 02:54:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20555 states to 20555 states and 34092 transitions. [2023-11-29 02:54:35,005 INFO L78 Accepts]: Start accepts. Automaton has 20555 states and 34092 transitions. Word has length 142 [2023-11-29 02:54:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:35,005 INFO L495 AbstractCegarLoop]: Abstraction has 20555 states and 34092 transitions. [2023-11-29 02:54:35,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:35,005 INFO L276 IsEmpty]: Start isEmpty. Operand 20555 states and 34092 transitions. [2023-11-29 02:54:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:35,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:35,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:35,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:54:35,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:35,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:35,019 INFO L85 PathProgramCache]: Analyzing trace with hash -493721962, now seen corresponding path program 1 times [2023-11-29 02:54:35,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:35,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251881222] [2023-11-29 02:54:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:35,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251881222] [2023-11-29 02:54:35,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251881222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:35,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:35,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:35,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558446179] [2023-11-29 02:54:35,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:35,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:35,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:35,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:35,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:35,235 INFO L87 Difference]: Start difference. First operand 20555 states and 34092 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:40,325 INFO L93 Difference]: Finished difference Result 75484 states and 125245 transitions. [2023-11-29 02:54:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:54:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:40,481 INFO L225 Difference]: With dead ends: 75484 [2023-11-29 02:54:40,482 INFO L226 Difference]: Without dead ends: 57068 [2023-11-29 02:54:40,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:54:40,532 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 5285 mSDsluCounter, 17228 mSDsCounter, 0 mSdLazyCounter, 3608 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5301 SdHoareTripleChecker+Valid, 21605 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:40,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5301 Valid, 21605 Invalid, 3678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3608 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 02:54:40,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57068 states. [2023-11-29 02:54:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57068 to 38315. [2023-11-29 02:54:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38315 states, 35104 states have (on average 1.614260483135825) internal successors, (56667), 35235 states have internal predecessors, (56667), 2313 states have call successors, (2313), 769 states have call predecessors, (2313), 896 states have return successors, (4754), 2438 states have call predecessors, (4754), 2311 states have call successors, (4754) [2023-11-29 02:54:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38315 states to 38315 states and 63734 transitions. [2023-11-29 02:54:42,239 INFO L78 Accepts]: Start accepts. Automaton has 38315 states and 63734 transitions. Word has length 142 [2023-11-29 02:54:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:42,239 INFO L495 AbstractCegarLoop]: Abstraction has 38315 states and 63734 transitions. [2023-11-29 02:54:42,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 38315 states and 63734 transitions. [2023-11-29 02:54:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:42,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:42,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:42,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:54:42,257 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:42,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2141084904, now seen corresponding path program 1 times [2023-11-29 02:54:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:42,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190095260] [2023-11-29 02:54:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:42,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:42,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:42,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:42,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190095260] [2023-11-29 02:54:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190095260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:42,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:42,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105879399] [2023-11-29 02:54:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:42,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:42,473 INFO L87 Difference]: Start difference. First operand 38315 states and 63734 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:54:48,746 INFO L93 Difference]: Finished difference Result 145020 states and 242573 transitions. [2023-11-29 02:54:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:54:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:54:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:54:49,025 INFO L225 Difference]: With dead ends: 145020 [2023-11-29 02:54:49,025 INFO L226 Difference]: Without dead ends: 108844 [2023-11-29 02:54:49,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:54:49,096 INFO L413 NwaCegarLoop]: 4378 mSDtfsCounter, 5498 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3031 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5526 SdHoareTripleChecker+Valid, 21609 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:54:49,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5526 Valid, 21609 Invalid, 3102 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [71 Valid, 3031 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 02:54:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108844 states. [2023-11-29 02:54:52,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108844 to 74475. [2023-11-29 02:54:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74475 states, 68192 states have (on average 1.606918700140779) internal successors, (109579), 68451 states have internal predecessors, (109579), 4489 states have call successors, (4489), 1537 states have call predecessors, (4489), 1792 states have return successors, (11560), 4742 states have call predecessors, (11560), 4487 states have call successors, (11560) [2023-11-29 02:54:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74475 states to 74475 states and 125628 transitions. [2023-11-29 02:54:52,614 INFO L78 Accepts]: Start accepts. Automaton has 74475 states and 125628 transitions. Word has length 142 [2023-11-29 02:54:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:54:52,615 INFO L495 AbstractCegarLoop]: Abstraction has 74475 states and 125628 transitions. [2023-11-29 02:54:52,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:54:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 74475 states and 125628 transitions. [2023-11-29 02:54:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:54:52,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:54:52,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:54:52,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:54:52,661 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:54:52,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:54:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 22531670, now seen corresponding path program 1 times [2023-11-29 02:54:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:54:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906439630] [2023-11-29 02:54:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:54:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:54:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:54:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:54:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:54:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:52,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:54:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:54:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:54:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:54:52,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:54:52,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906439630] [2023-11-29 02:54:52,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906439630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:54:52,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:54:52,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:54:52,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824174751] [2023-11-29 02:54:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:54:52,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:54:52,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:54:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:54:52,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:54:52,972 INFO L87 Difference]: Start difference. First operand 74475 states and 125628 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:01,804 INFO L93 Difference]: Finished difference Result 283964 states and 483061 transitions. [2023-11-29 02:55:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:01,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:55:01,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:02,569 INFO L225 Difference]: With dead ends: 283964 [2023-11-29 02:55:02,570 INFO L226 Difference]: Without dead ends: 211628 [2023-11-29 02:55:02,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:02,810 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 5464 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3013 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5492 SdHoareTripleChecker+Valid, 21608 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:02,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5492 Valid, 21608 Invalid, 3084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 3013 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 02:55:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211628 states. [2023-11-29 02:55:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211628 to 146795. [2023-11-29 02:55:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146795 states, 134496 states have (on average 1.6034603259576492) internal successors, (215659), 135011 states have internal predecessors, (215659), 8713 states have call successors, (8713), 3073 states have call predecessors, (8713), 3584 states have return successors, (29418), 9222 states have call predecessors, (29418), 8711 states have call successors, (29418) [2023-11-29 02:55:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146795 states to 146795 states and 253790 transitions. [2023-11-29 02:55:10,617 INFO L78 Accepts]: Start accepts. Automaton has 146795 states and 253790 transitions. Word has length 142 [2023-11-29 02:55:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:10,618 INFO L495 AbstractCegarLoop]: Abstraction has 146795 states and 253790 transitions. [2023-11-29 02:55:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 146795 states and 253790 transitions. [2023-11-29 02:55:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:55:10,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:10,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:55:10,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:55:10,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:10,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:10,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1016052904, now seen corresponding path program 1 times [2023-11-29 02:55:10,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:10,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402213965] [2023-11-29 02:55:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:55:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:10,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:55:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:55:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:55:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:10,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:10,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402213965] [2023-11-29 02:55:10,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402213965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:10,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:10,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:10,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322810112] [2023-11-29 02:55:10,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:10,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:10,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:10,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:10,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:10,939 INFO L87 Difference]: Start difference. First operand 146795 states and 253790 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:25,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:55:25,658 INFO L93 Difference]: Finished difference Result 558012 states and 974877 transitions. [2023-11-29 02:55:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:55:25,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:55:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:55:27,410 INFO L225 Difference]: With dead ends: 558012 [2023-11-29 02:55:27,410 INFO L226 Difference]: Without dead ends: 413356 [2023-11-29 02:55:27,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:55:27,892 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 5268 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5284 SdHoareTripleChecker+Valid, 21611 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:55:27,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5284 Valid, 21611 Invalid, 3507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3437 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 02:55:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413356 states. [2023-11-29 02:55:42,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413356 to 291435. [2023-11-29 02:55:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291435 states, 267360 states have (on average 1.6020758527827648) internal successors, (428331), 268387 states have internal predecessors, (428331), 16905 states have call successors, (16905), 6145 states have call predecessors, (16905), 7168 states have return successors, (78000), 17926 states have call predecessors, (78000), 16903 states have call successors, (78000) [2023-11-29 02:55:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291435 states to 291435 states and 523236 transitions. [2023-11-29 02:55:44,647 INFO L78 Accepts]: Start accepts. Automaton has 291435 states and 523236 transitions. Word has length 142 [2023-11-29 02:55:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:55:44,648 INFO L495 AbstractCegarLoop]: Abstraction has 291435 states and 523236 transitions. [2023-11-29 02:55:44,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:55:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 291435 states and 523236 transitions. [2023-11-29 02:55:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:55:44,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:55:44,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:55:44,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:55:44,787 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:55:44,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:55:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1305749014, now seen corresponding path program 1 times [2023-11-29 02:55:44,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:55:44,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287485211] [2023-11-29 02:55:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:55:44,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:55:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:55:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:55:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:55:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:55:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:55:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:55:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:55:45,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:55:45,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287485211] [2023-11-29 02:55:45,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287485211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:55:45,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:55:45,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:55:45,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677741262] [2023-11-29 02:55:45,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:55:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:55:45,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:55:45,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:55:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:55:45,081 INFO L87 Difference]: Start difference. First operand 291435 states and 523236 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:56:11,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:56:11,331 INFO L93 Difference]: Finished difference Result 1085116 states and 1977205 transitions. [2023-11-29 02:56:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:56:11,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-29 02:56:11,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:56:15,597 INFO L225 Difference]: With dead ends: 1085116 [2023-11-29 02:56:15,598 INFO L226 Difference]: Without dead ends: 795820 [2023-11-29 02:56:16,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:56:16,861 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 5249 mSDsluCounter, 17231 mSDsCounter, 0 mSdLazyCounter, 3318 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5265 SdHoareTripleChecker+Valid, 21611 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:56:16,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5265 Valid, 21611 Invalid, 3388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 3318 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 02:56:17,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795820 states. [2023-11-29 02:56:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795820 to 581739. [2023-11-29 02:56:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581739 states, 534624 states have (on average 1.602522520500389) internal successors, (856747), 536675 states have internal predecessors, (856747), 32777 states have call successors, (32777), 12289 states have call predecessors, (32777), 14336 states have return successors, (214018), 34822 states have call predecessors, (214018), 32775 states have call successors, (214018) [2023-11-29 02:56:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581739 states to 581739 states and 1103542 transitions. [2023-11-29 02:56:51,117 INFO L78 Accepts]: Start accepts. Automaton has 581739 states and 1103542 transitions. Word has length 142 [2023-11-29 02:56:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:56:51,117 INFO L495 AbstractCegarLoop]: Abstraction has 581739 states and 1103542 transitions. [2023-11-29 02:56:51,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:56:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 581739 states and 1103542 transitions. [2023-11-29 02:56:51,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 02:56:51,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:56:51,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:56:51,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:56:51,326 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:56:51,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:56:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash 682467412, now seen corresponding path program 1 times [2023-11-29 02:56:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:56:51,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526426165] [2023-11-29 02:56:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:56:51,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:56:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:51,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:56:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:51,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:56:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:56:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:56:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 02:56:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:56:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:56:51,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:56:51,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526426165] [2023-11-29 02:56:51,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526426165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:56:51,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:56:51,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:56:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361217707] [2023-11-29 02:56:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:56:51,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:56:51,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:56:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:56:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:56:51,572 INFO L87 Difference]: Start difference. First operand 581739 states and 1103542 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)