./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--media--usb--s2255--s2255drv.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--media--usb--s2255--s2255drv.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 54e002909c3a42ac4626b4ae6d9c433b64c95193dc7056ae93230780cdb474fa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:26,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:26,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:17:26,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:26,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:26,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:26,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:26,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:26,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:26,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:26,443 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:26,444 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:26,445 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:26,445 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:26,446 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:26,447 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:26,447 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:26,448 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:26,448 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:26,449 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:26,449 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:26,450 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:26,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:26,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:26,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:26,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:26,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:26,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:26,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:26,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:26,455 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:26,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:26,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:26,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:26,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:26,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:26,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:26,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:26,458 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:26,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:26,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:26,459 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:26,459 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:26,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:26,460 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54e002909c3a42ac4626b4ae6d9c433b64c95193dc7056ae93230780cdb474fa [2023-11-23 21:17:26,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:26,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:26,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:26,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:26,964 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:26,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--media--usb--s2255--s2255drv.ko-entry_point.cil.out.i [2023-11-23 21:17:30,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:31,334 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:31,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--media--usb--s2255--s2255drv.ko-entry_point.cil.out.i [2023-11-23 21:17:31,409 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/data/68765f74d/88d8cb53f81f4670a4585def629a224e/FLAG16e666aed [2023-11-23 21:17:31,434 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/data/68765f74d/88d8cb53f81f4670a4585def629a224e [2023-11-23 21:17:31,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:31,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:31,450 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:31,450 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:31,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:31,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:31" (1/1) ... [2023-11-23 21:17:31,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a12f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:31, skipping insertion in model container [2023-11-23 21:17:31,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:31" (1/1) ... [2023-11-23 21:17:31,667 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:32,495 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4609] [2023-11-23 21:17:34,714 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_80199632-0a98-410f-841b-40ec983f92f6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--media--usb--s2255--s2255drv.ko-entry_point.cil.out.i[293547,293560] [2023-11-23 21:17:34,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:34,960 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:35,213 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4609] [2023-11-23 21:17:35,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [5353] [2023-11-23 21:17:35,252 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [5361-5362] [2023-11-23 21:17:35,804 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_80199632-0a98-410f-841b-40ec983f92f6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--media--usb--s2255--s2255drv.ko-entry_point.cil.out.i[293547,293560] [2023-11-23 21:17:35,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:36,032 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:36,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36 WrapperNode [2023-11-23 21:17:36,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:36,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:36,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:36,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:36,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:36,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:37,604 INFO L138 Inliner]: procedures = 249, calls = 3593, calls flagged for inlining = 133, calls inlined = 120, statements flattened = 7593 [2023-11-23 21:17:37,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:37,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:37,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:37,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:37,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:37,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:38,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:38,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:39,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:39,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:40,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:40,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:40,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:40,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:40,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:40,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:40,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (1/1) ... [2023-11-23 21:17:40,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:40,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:40,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:40,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80199632-0a98-410f-841b-40ec983f92f6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-23 21:17:40,189 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-23 21:17:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure s2255_stop_acquire [2023-11-23 21:17:40,191 INFO L138 BoogieDeclarations]: Found implementation of procedure s2255_stop_acquire [2023-11-23 21:17:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:17:40,191 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:17:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_set_plane_payload [2023-11-23 21:17:40,192 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_set_plane_payload [2023-11-23 21:17:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_is_streaming [2023-11-23 21:17:40,192 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_is_streaming [2023-11-23 21:17:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_poll [2023-11-23 21:17:40,192 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_fop_poll [2023-11-23 21:17:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:17:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:17:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:17:40,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:17:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:17:40,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:17:40,194 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2023-11-23 21:17:40,194 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2023-11-23 21:17:40,194 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_mmap [2023-11-23 21:17:40,195 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_fop_mmap [2023-11-23 21:17:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:17:40,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:17:40,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:17:40,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:17:40,196 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_is_busy [2023-11-23 21:17:40,197 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_is_busy [2023-11-23 21:17:40,197 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2023-11-23 21:17:40,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2023-11-23 21:17:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:17:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:17:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-23 21:17:40,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-23 21:17:40,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:17:40,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:17:40,199 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2023-11-23 21:17:40,199 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2023-11-23 21:17:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-23 21:17:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-23 21:17:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:17:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:17:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:17:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:17:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2023-11-23 21:17:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2023-11-23 21:17:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-23 21:17:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-23 21:17:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:17:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:17:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:17:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:17:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2023-11-23 21:17:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2023-11-23 21:17:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-11-23 21:17:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-11-23 21:17:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:17:40,203 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:17:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2023-11-23 21:17:40,204 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2023-11-23 21:17:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:17:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:17:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure s2255_write_config [2023-11-23 21:17:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure s2255_write_config [2023-11-23 21:17:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:17:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:17:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure to_s2255_dev [2023-11-23 21:17:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure to_s2255_dev [2023-11-23 21:17:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:17:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:17:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:17:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:17:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 21:17:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 21:17:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-23 21:17:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-23 21:17:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:17:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:17:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:17:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:17:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-11-23 21:17:40,208 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-11-23 21:17:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2023-11-23 21:17:40,209 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2023-11-23 21:17:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure s2255_vendor_req [2023-11-23 21:17:40,209 INFO L138 BoogieDeclarations]: Found implementation of procedure s2255_vendor_req [2023-11-23 21:17:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:17:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure norm_minw [2023-11-23 21:17:40,209 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_minw [2023-11-23 21:17:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:17:40,210 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:17:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2023-11-23 21:17:40,210 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2023-11-23 21:17:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure norm_minh [2023-11-23 21:17:40,210 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_minh [2023-11-23 21:17:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2023-11-23 21:17:40,210 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2023-11-23 21:17:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:17:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:17:40,211 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:17:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:17:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2023-11-23 21:17:40,212 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2023-11-23 21:17:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-23 21:17:40,212 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-23 21:17:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:17:40,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:17:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:17:40,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:17:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2023-11-23 21:17:40,213 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2023-11-23 21:17:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 21:17:40,214 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 21:17:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:17:40,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:17:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-23 21:17:40,215 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-23 21:17:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure get_transfer_size [2023-11-23 21:17:40,215 INFO L138 BoogieDeclarations]: Found implementation of procedure get_transfer_size [2023-11-23 21:17:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2023-11-23 21:17:40,215 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2023-11-23 21:17:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:17:40,216 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:17:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:17:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:17:40,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:17:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:17:40,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:17:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure s2255_board_shutdown [2023-11-23 21:17:40,217 INFO L138 BoogieDeclarations]: Found implementation of procedure s2255_board_shutdown [2023-11-23 21:17:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:17:40,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:17:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:17:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-23 21:17:40,218 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-23 21:17:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure s2255_destroy [2023-11-23 21:17:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure s2255_destroy [2023-11-23 21:17:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure s2255_set_mode [2023-11-23 21:17:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure s2255_set_mode [2023-11-23 21:17:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:17:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:17:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-23 21:17:40,221 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-23 21:17:40,224 INFO L130 BoogieDeclarations]: Found specification of procedure s2255_reset_dsppower [2023-11-23 21:17:40,224 INFO L138 BoogieDeclarations]: Found implementation of procedure s2255_reset_dsppower [2023-11-23 21:17:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:17:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure s2255_fwload_start [2023-11-23 21:17:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure s2255_fwload_start [2023-11-23 21:17:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2023-11-23 21:17:40,228 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2023-11-23 21:17:40,228 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 21:17:40,228 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 21:17:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 21:17:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 21:17:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 21:17:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 21:17:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 21:17:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 21:17:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2023-11-23 21:17:40,234 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2023-11-23 21:17:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-23 21:17:40,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-23 21:17:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2023-11-23 21:17:40,235 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2023-11-23 21:17:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:17:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-11-23 21:17:40,235 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-11-23 21:17:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-23 21:17:40,236 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-23 21:17:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:40,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:41,192 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:41,197 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:41,576 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:18:04,503 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:07,530 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:07,530 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:18:07,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:07 BoogieIcfgContainer [2023-11-23 21:18:07,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:07,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:07,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:07,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:07,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:31" (1/3) ... [2023-11-23 21:18:07,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3457ec66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:07, skipping insertion in model container [2023-11-23 21:18:07,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:36" (2/3) ... [2023-11-23 21:18:07,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3457ec66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:07, skipping insertion in model container [2023-11-23 21:18:07,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:07" (3/3) ... [2023-11-23 21:18:07,547 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--media--usb--s2255--s2255drv.ko-entry_point.cil.out.i [2023-11-23 21:18:07,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:07,569 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:18:07,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:07,685 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=FINITE_AUTOMATA, 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;@7ea10c43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:07,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:18:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 1295 states, 825 states have (on average 1.3466666666666667) internal successors, (1111), 853 states have internal predecessors, (1111), 391 states have call successors, (391), 78 states have call predecessors, (391), 77 states have return successors, (382), 378 states have call predecessors, (382), 382 states have call successors, (382) [2023-11-23 21:18:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-11-23 21:18:07,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:07,762 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:07,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:07,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1322086675, now seen corresponding path program 1 times [2023-11-23 21:18:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:07,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400406946] [2023-11-23 21:18:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:07,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10096 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10096 trivial. 0 not checked. [2023-11-23 21:18:10,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400406946] [2023-11-23 21:18:10,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400406946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:10,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:10,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969442647] [2023-11-23 21:18:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:10,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:10,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:10,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:10,249 INFO L87 Difference]: Start difference. First operand has 1295 states, 825 states have (on average 1.3466666666666667) internal successors, (1111), 853 states have internal predecessors, (1111), 391 states have call successors, (391), 78 states have call predecessors, (391), 77 states have return successors, (382), 378 states have call predecessors, (382), 382 states have call successors, (382) Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-11-23 21:18:12,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []