./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.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_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/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_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/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_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/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 d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:20:02,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:20:02,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:20:02,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:20:02,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:20:02,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:20:02,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:20:02,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:20:02,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:20:02,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:20:02,652 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:20:02,653 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:20:02,653 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:20:02,655 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:20:02,656 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:20:02,656 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:20:02,657 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:20:02,658 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:20:02,658 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:20:02,659 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:20:02,659 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:20:02,660 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:20:02,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:20:02,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:20:02,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:20:02,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:20:02,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:20:02,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:20:02,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:20:02,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:20:02,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:20:02,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:20:02,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:20:02,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:20:02,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:02,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:20:02,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:20:02,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:20:02,669 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:20:02,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:20:02,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:20:02,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:20:02,671 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:20:02,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:20:02,672 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_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2023-11-23 21:20:02,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:20:03,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:20:03,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:20:03,055 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:20:03,055 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:20:03,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2023-11-23 21:20:06,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:20:06,799 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:20:06,800 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2023-11-23 21:20:06,853 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/data/04d18b73f/31b443e2e01f482e97d108660872040d/FLAG97a5ea362 [2023-11-23 21:20:06,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/data/04d18b73f/31b443e2e01f482e97d108660872040d [2023-11-23 21:20:06,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:20:06,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:20:06,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:06,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:20:06,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:20:06,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:06" (1/1) ... [2023-11-23 21:20:06,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60db99b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:06, skipping insertion in model container [2023-11-23 21:20:06,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:06" (1/1) ... [2023-11-23 21:20:07,084 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:20:08,193 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_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2023-11-23 21:20:09,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:09,488 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:20:09,706 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; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [7017-7018] [2023-11-23 21:20:09,719 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_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2023-11-23 21:20:09,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:10,095 WARN L675 CHandler]: The function __VERIFIER_nondet_u32 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:20:10,103 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:20:10,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10 WrapperNode [2023-11-23 21:20:10,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:10,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:10,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:20:10,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:20:10,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,544 INFO L138 Inliner]: procedures = 239, calls = 3162, calls flagged for inlining = 111, calls inlined = 96, statements flattened = 6029 [2023-11-23 21:20:10,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:10,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:20:10,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:20:10,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:20:10,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:20:10,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:20:10,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:20:10,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:20:10,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (1/1) ... [2023-11-23 21:20:10,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:10,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:10,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:20:10,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef6b9e90-ad73-420b-ab5a-02c1e1b97fec/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:20:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure at76_hw_scan [2023-11-23 21:20:10,962 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_hw_scan [2023-11-23 21:20:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure at76_dfu_get_status [2023-11-23 21:20:10,963 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_dfu_get_status [2023-11-23 21:20:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure at76_join [2023-11-23 21:20:10,965 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_join [2023-11-23 21:20:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 21:20:10,965 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 21:20:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:20:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:20:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:20:10,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:20:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2023-11-23 21:20:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2023-11-23 21:20:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure at76_submit_rx_urb [2023-11-23 21:20:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_submit_rx_urb [2023-11-23 21:20:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure at76_add_interface [2023-11-23 21:20:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_add_interface [2023-11-23 21:20:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_timeout [2023-11-23 21:20:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_timeout [2023-11-23 21:20:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:20:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:20:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-23 21:20:10,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-23 21:20:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure at76_bss_info_changed [2023-11-23 21:20:10,970 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_bss_info_changed [2023-11-23 21:20:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-23 21:20:10,971 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-23 21:20:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure at76_wait_completion [2023-11-23 21:20:10,972 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_wait_completion [2023-11-23 21:20:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:20:10,972 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:20:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-23 21:20:10,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-23 21:20:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:20:10,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:20:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:20:10,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:20:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:20:10,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:20:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:20:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:20:10,974 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:20:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:20:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-23 21:20:10,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-23 21:20:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure at76_delete_device [2023-11-23 21:20:10,975 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_delete_device [2023-11-23 21:20:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2023-11-23 21:20:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_mib [2023-11-23 21:20:10,975 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_mib [2023-11-23 21:20:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_radio [2023-11-23 21:20:10,976 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_radio [2023-11-23 21:20:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:20:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:20:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:20:10,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:20:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_event [2023-11-23 21:20:10,977 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_event [2023-11-23 21:20:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_card_command [2023-11-23 21:20:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_card_command [2023-11-23 21:20:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_cmd_status [2023-11-23 21:20:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_cmd_status [2023-11-23 21:20:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:20:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:20:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2023-11-23 21:20:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2023-11-23 21:20:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-23 21:20:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-23 21:20:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:20:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:20:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2023-11-23 21:20:10,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2023-11-23 21:20:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:20:10,982 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:20:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-23 21:20:10,982 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-23 21:20:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-23 21:20:10,983 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-23 21:20:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_mib [2023-11-23 21:20:10,983 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_mib [2023-11-23 21:20:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-23 21:20:10,983 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-23 21:20:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:20:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:20:10,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:20:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:20:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_pm_mode [2023-11-23 21:20:10,985 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_pm_mode [2023-11-23 21:20:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:20:10,985 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:20:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_key [2023-11-23 21:20:10,986 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_key [2023-11-23 21:20:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure at76_is_505a [2023-11-23 21:20:10,986 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_is_505a [2023-11-23 21:20:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:20:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_hw_cfg [2023-11-23 21:20:10,987 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_hw_cfg [2023-11-23 21:20:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure at76_config [2023-11-23 21:20:10,987 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_config [2023-11-23 21:20:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-23 21:20:10,987 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-23 21:20:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:20:10,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:20:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-11-23 21:20:10,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-11-23 21:20:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:20:10,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:20:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2023-11-23 21:20:10,989 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2023-11-23 21:20:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 21:20:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 21:20:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_op_mode [2023-11-23 21:20:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_op_mode [2023-11-23 21:20:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure at76_remove_interface [2023-11-23 21:20:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_remove_interface [2023-11-23 21:20:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2023-11-23 21:20:10,992 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2023-11-23 21:20:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:20:10,992 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:20:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:20:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:20:10,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:20:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_name [2023-11-23 21:20:10,993 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_name [2023-11-23 21:20:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2023-11-23 21:20:10,993 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2023-11-23 21:20:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:20:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure at76_start_monitor [2023-11-23 21:20:10,994 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_start_monitor [2023-11-23 21:20:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2023-11-23 21:20:10,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2023-11-23 21:20:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-11-23 21:20:10,995 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-11-23 21:20:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:20:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-11-23 21:20:10,996 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-11-23 21:20:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:20:10,996 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 21:20:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 21:20:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-23 21:20:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-23 21:20:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 21:20:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 21:20:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-23 21:20:10,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-23 21:20:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure at76_configure_filter [2023-11-23 21:20:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_configure_filter [2023-11-23 21:20:11,002 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:20:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:20:11,004 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2023-11-23 21:20:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2023-11-23 21:20:11,004 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-23 21:20:11,004 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-23 21:20:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:20:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure at76_mac80211_tx [2023-11-23 21:20:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_mac80211_tx [2023-11-23 21:20:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:20:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:20:11,005 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2023-11-23 21:20:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2023-11-23 21:20:11,843 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:20:11,847 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:20:12,261 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:20:23,811 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:20:25,895 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:20:25,895 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:20:25,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:25 BoogieIcfgContainer [2023-11-23 21:20:25,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:20:25,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:20:25,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:20:25,905 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:20:25,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:20:06" (1/3) ... [2023-11-23 21:20:25,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aed6e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:25, skipping insertion in model container [2023-11-23 21:20:25,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:10" (2/3) ... [2023-11-23 21:20:25,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aed6e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:25, skipping insertion in model container [2023-11-23 21:20:25,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:25" (3/3) ... [2023-11-23 21:20:25,911 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2023-11-23 21:20:25,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:20:25,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:20:26,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:20:26,069 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;@78d22259, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:20:26,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:20:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 1378 states, 880 states have (on average 1.3386363636363636) internal successors, (1178), 904 states have internal predecessors, (1178), 425 states have call successors, (425), 72 states have call predecessors, (425), 71 states have return successors, (420), 419 states have call predecessors, (420), 420 states have call successors, (420) [2023-11-23 21:20:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:20:26,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:26,108 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:26,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:26,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:26,116 INFO L85 PathProgramCache]: Analyzing trace with hash -984974461, now seen corresponding path program 1 times [2023-11-23 21:20:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:26,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732211040] [2023-11-23 21:20:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:26,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-23 21:20:27,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:27,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732211040] [2023-11-23 21:20:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732211040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:27,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:27,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573361353] [2023-11-23 21:20:27,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:27,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:27,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:27,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:27,646 INFO L87 Difference]: Start difference. First operand has 1378 states, 880 states have (on average 1.3386363636363636) internal successors, (1178), 904 states have internal predecessors, (1178), 425 states have call successors, (425), 72 states have call predecessors, (425), 71 states have return successors, (420), 419 states have call predecessors, (420), 420 states have call successors, (420) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:20:32,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:34,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:36,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:36,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:36,650 INFO L93 Difference]: Finished difference Result 4065 states and 5983 transitions. [2023-11-23 21:20:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 74 [2023-11-23 21:20:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:36,700 INFO L225 Difference]: With dead ends: 4065 [2023-11-23 21:20:36,701 INFO L226 Difference]: Without dead ends: 2694 [2023-11-23 21:20:36,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:36,725 INFO L413 NwaCegarLoop]: 1832 mSDtfsCounter, 1960 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:36,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 3637 Invalid, 402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 390 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2023-11-23 21:20:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2023-11-23 21:20:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2694. [2023-11-23 21:20:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 1731 states have (on average 1.3292894280762566) internal successors, (2301), 1765 states have internal predecessors, (2301), 822 states have call successors, (822), 141 states have call predecessors, (822), 140 states have return successors, (821), 819 states have call predecessors, (821), 821 states have call successors, (821) [2023-11-23 21:20:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3944 transitions. [2023-11-23 21:20:37,051 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3944 transitions. Word has length 74 [2023-11-23 21:20:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:37,053 INFO L495 AbstractCegarLoop]: Abstraction has 2694 states and 3944 transitions. [2023-11-23 21:20:37,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:20:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3944 transitions. [2023-11-23 21:20:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 21:20:37,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:37,068 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:37,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:20:37,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:37,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2081573692, now seen corresponding path program 1 times [2023-11-23 21:20:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:37,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154662983] [2023-11-23 21:20:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:37,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-23 21:20:38,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:38,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154662983] [2023-11-23 21:20:38,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154662983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:38,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:38,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:20:38,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419996480] [2023-11-23 21:20:38,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:38,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:20:38,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:38,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:20:38,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:38,241 INFO L87 Difference]: Start difference. First operand 2694 states and 3944 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:20:43,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:45,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:47,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:49,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:51,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:51,836 INFO L93 Difference]: Finished difference Result 5367 states and 7869 transitions. [2023-11-23 21:20:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:20:51,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 88 [2023-11-23 21:20:51,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:51,884 INFO L225 Difference]: With dead ends: 5367 [2023-11-23 21:20:51,884 INFO L226 Difference]: Without dead ends: 5359 [2023-11-23 21:20:51,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:20:51,891 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 1977 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 5492 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:51,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 5492 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 5 Unknown, 0 Unchecked, 13.2s Time] [2023-11-23 21:20:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2023-11-23 21:20:52,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5351. [2023-11-23 21:20:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5351 states, 3438 states have (on average 1.3298429319371727) internal successors, (4572), 3506 states have internal predecessors, (4572), 1632 states have call successors, (1632), 281 states have call predecessors, (1632), 280 states have return successors, (1643), 1627 states have call predecessors, (1643), 1631 states have call successors, (1643) [2023-11-23 21:20:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 7847 transitions. [2023-11-23 21:20:52,301 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 7847 transitions. Word has length 88 [2023-11-23 21:20:52,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:52,305 INFO L495 AbstractCegarLoop]: Abstraction has 5351 states and 7847 transitions. [2023-11-23 21:20:52,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:20:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 7847 transitions. [2023-11-23 21:20:52,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 21:20:52,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:52,322 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:52,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:20:52,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:52,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash 50173085, now seen corresponding path program 1 times [2023-11-23 21:20:52,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:52,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479586144] [2023-11-23 21:20:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:52,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 21:20:52,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479586144] [2023-11-23 21:20:52,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479586144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:52,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:52,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:52,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318183854] [2023-11-23 21:20:52,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:52,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:52,972 INFO L87 Difference]: Start difference. First operand 5351 states and 7847 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)