./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 9bd2c7ff 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_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/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_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ --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-9bd2c7f [2023-11-19 05:00:25,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:00:25,491 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:00:25,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:00:25,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:00:25,524 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:00:25,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:00:25,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:00:25,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:00:25,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:00:25,527 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:00:25,528 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:00:25,529 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:00:25,529 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:00:25,530 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:00:25,530 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:00:25,531 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:00:25,531 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:00:25,532 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:00:25,533 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:00:25,533 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:00:25,540 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:00:25,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:00:25,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:00:25,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:00:25,542 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:00:25,542 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:00:25,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:00:25,543 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:00:25,544 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:00:25,544 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:00:25,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:00:25,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:00:25,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:25,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:00:25,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:00:25,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:00:25,548 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:00:25,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:00:25,549 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:00:25,550 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:00:25,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:00:25,555 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_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2023-11-19 05:00:25,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:00:25,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:00:25,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:00:25,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:00:25,903 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:00:25,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/../../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 [2023-11-19 05:00:29,027 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:00:29,694 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:00:29,696 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/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 [2023-11-19 05:00:29,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/data/7cdcea5fc/fc96746ef7d84eb28941c06e7f5f873b/FLAGc258119cf [2023-11-19 05:00:29,775 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/data/7cdcea5fc/fc96746ef7d84eb28941c06e7f5f873b [2023-11-19 05:00:29,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:00:29,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:00:29,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:29,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:00:29,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:00:29,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:29" (1/1) ... [2023-11-19 05:00:29,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a572d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:29, skipping insertion in model container [2023-11-19 05:00:29,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:29" (1/1) ... [2023-11-19 05:00:29,973 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:00:31,045 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_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/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] [2023-11-19 05:00:32,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:32,176 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:00:32,425 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] [2023-11-19 05:00:32,439 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_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/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] [2023-11-19 05:00:32,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:32,866 WARN L675 CHandler]: The function __VERIFIER_nondet_u32 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:00:32,875 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:00:32,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32 WrapperNode [2023-11-19 05:00:32,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:32,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:32,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:00:32,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:00:32,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,205 INFO L138 Inliner]: procedures = 239, calls = 3162, calls flagged for inlining = 111, calls inlined = 96, statements flattened = 6029 [2023-11-19 05:00:33,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:33,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:00:33,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:00:33,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:00:33,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:00:33,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:00:33,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:00:33,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:00:33,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (1/1) ... [2023-11-19 05:00:33,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:33,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:33,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:00:33,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd88de5-7a53-4e1d-b80e-49ee3ab96d35/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:00:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure at76_hw_scan [2023-11-19 05:00:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_hw_scan [2023-11-19 05:00:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure at76_dfu_get_status [2023-11-19 05:00:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_dfu_get_status [2023-11-19 05:00:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure at76_join [2023-11-19 05:00:33,699 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_join [2023-11-19 05:00:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 05:00:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 05:00:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:00:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:00:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:00:33,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:00:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2023-11-19 05:00:33,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2023-11-19 05:00:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure at76_submit_rx_urb [2023-11-19 05:00:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_submit_rx_urb [2023-11-19 05:00:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure at76_add_interface [2023-11-19 05:00:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_add_interface [2023-11-19 05:00:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_timeout [2023-11-19 05:00:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_timeout [2023-11-19 05:00:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:00:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:00:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-19 05:00:33,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-19 05:00:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure at76_bss_info_changed [2023-11-19 05:00:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_bss_info_changed [2023-11-19 05:00:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-19 05:00:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-19 05:00:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure at76_wait_completion [2023-11-19 05:00:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_wait_completion [2023-11-19 05:00:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:00:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:00:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 05:00:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 05:00:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:00:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:00:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:00:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:00:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:00:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:00:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:00:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 05:00:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 05:00:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:00:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-19 05:00:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-19 05:00:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure at76_delete_device [2023-11-19 05:00:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_delete_device [2023-11-19 05:00:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2023-11-19 05:00:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_mib [2023-11-19 05:00:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_mib [2023-11-19 05:00:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_radio [2023-11-19 05:00:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_radio [2023-11-19 05:00:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:00:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:00:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:00:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:00:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_event [2023-11-19 05:00:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_event [2023-11-19 05:00:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_card_command [2023-11-19 05:00:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_card_command [2023-11-19 05:00:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_cmd_status [2023-11-19 05:00:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_cmd_status [2023-11-19 05:00:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:00:33,718 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:00:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2023-11-19 05:00:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2023-11-19 05:00:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-19 05:00:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-19 05:00:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:00:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:00:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2023-11-19 05:00:33,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2023-11-19 05:00:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 05:00:33,720 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 05:00:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 05:00:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 05:00:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-19 05:00:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-19 05:00:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_mib [2023-11-19 05:00:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_mib [2023-11-19 05:00:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 05:00:33,722 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 05:00:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:00:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 05:00:33,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 05:00:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:00:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_pm_mode [2023-11-19 05:00:33,723 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_pm_mode [2023-11-19 05:00:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:00:33,724 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:00:33,724 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_key [2023-11-19 05:00:33,724 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_key [2023-11-19 05:00:33,724 INFO L130 BoogieDeclarations]: Found specification of procedure at76_is_505a [2023-11-19 05:00:33,724 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_is_505a [2023-11-19 05:00:33,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:00:33,725 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_hw_cfg [2023-11-19 05:00:33,725 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_hw_cfg [2023-11-19 05:00:33,725 INFO L130 BoogieDeclarations]: Found specification of procedure at76_config [2023-11-19 05:00:33,725 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_config [2023-11-19 05:00:33,725 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-19 05:00:33,725 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-19 05:00:33,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:00:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:00:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-11-19 05:00:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-11-19 05:00:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:00:33,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:00:33,726 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2023-11-19 05:00:33,727 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2023-11-19 05:00:33,727 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:00:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:00:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_op_mode [2023-11-19 05:00:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_op_mode [2023-11-19 05:00:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure at76_remove_interface [2023-11-19 05:00:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_remove_interface [2023-11-19 05:00:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2023-11-19 05:00:33,729 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2023-11-19 05:00:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:00:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:00:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:00:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:00:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:00:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_name [2023-11-19 05:00:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_name [2023-11-19 05:00:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2023-11-19 05:00:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2023-11-19 05:00:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:00:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure at76_start_monitor [2023-11-19 05:00:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_start_monitor [2023-11-19 05:00:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2023-11-19 05:00:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2023-11-19 05:00:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-11-19 05:00:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-11-19 05:00:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:00:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-11-19 05:00:33,733 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-11-19 05:00:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:00:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-19 05:00:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-19 05:00:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-19 05:00:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-19 05:00:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:00:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:00:33,735 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-19 05:00:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-19 05:00:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure at76_configure_filter [2023-11-19 05:00:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_configure_filter [2023-11-19 05:00:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 05:00:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 05:00:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2023-11-19 05:00:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2023-11-19 05:00:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-19 05:00:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-19 05:00:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:00:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure at76_mac80211_tx [2023-11-19 05:00:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_mac80211_tx [2023-11-19 05:00:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:00:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:00:33,750 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2023-11-19 05:00:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2023-11-19 05:00:34,581 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:00:34,585 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:00:34,923 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:00:46,786 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:00:49,074 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:00:49,074 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 05:00:49,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:49 BoogieIcfgContainer [2023-11-19 05:00:49,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:00:49,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:00:49,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:00:49,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:00:49,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:00:29" (1/3) ... [2023-11-19 05:00:49,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b04fcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:49, skipping insertion in model container [2023-11-19 05:00:49,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:32" (2/3) ... [2023-11-19 05:00:49,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b04fcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:49, skipping insertion in model container [2023-11-19 05:00:49,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:49" (3/3) ... [2023-11-19 05:00:49,105 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 [2023-11-19 05:00:49,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:00:49,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:00:49,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:00:49,253 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;@57eb22cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:00:49,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:00:49,265 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) [2023-11-19 05:00:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 05:00:49,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:49,282 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] [2023-11-19 05:00:49,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:49,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2138607578, now seen corresponding path program 1 times [2023-11-19 05:00:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:49,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475208674] [2023-11-19 05:00:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:49,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-19 05:00:50,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475208674] [2023-11-19 05:00:50,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475208674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:50,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:50,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:50,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149510406] [2023-11-19 05:00:50,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:50,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:50,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:50,705 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) [2023-11-19 05:00:55,506 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 [] [2023-11-19 05:00:57,727 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 [] [2023-11-19 05:00:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:58,746 INFO L93 Difference]: Finished difference Result 4065 states and 5983 transitions. [2023-11-19 05:00:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:58,748 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 [2023-11-19 05:00:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:58,793 INFO L225 Difference]: With dead ends: 4065 [2023-11-19 05:00:58,793 INFO L226 Difference]: Without dead ends: 2694 [2023-11-19 05:00:58,807 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 [2023-11-19 05:00:58,811 INFO L413 NwaCegarLoop]: 1832 mSDtfsCounter, 1960 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:58,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 3637 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 391 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2023-11-19 05:00:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2023-11-19 05:00:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2694. [2023-11-19 05:00:59,094 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) [2023-11-19 05:00:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3944 transitions. [2023-11-19 05:00:59,125 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3944 transitions. Word has length 74 [2023-11-19 05:00:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:59,127 INFO L495 AbstractCegarLoop]: Abstraction has 2694 states and 3944 transitions. [2023-11-19 05:00:59,128 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) [2023-11-19 05:00:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3944 transitions. [2023-11-19 05:00:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 05:00:59,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:59,144 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] [2023-11-19 05:00:59,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:00:59,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:59,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash -219265760, now seen corresponding path program 1 times [2023-11-19 05:00:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:59,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245194005] [2023-11-19 05:00:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-19 05:01:00,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245194005] [2023-11-19 05:01:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245194005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:01:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862078473] [2023-11-19 05:01:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:01:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:01:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:00,491 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) [2023-11-19 05:01:05,272 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 [] [2023-11-19 05:01:07,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:01:09,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:01:11,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:01:13,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:01:13,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:13,840 INFO L93 Difference]: Finished difference Result 5367 states and 7869 transitions. [2023-11-19 05:01:13,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:01:13,841 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 [2023-11-19 05:01:13,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:13,885 INFO L225 Difference]: With dead ends: 5367 [2023-11-19 05:01:13,885 INFO L226 Difference]: Without dead ends: 5359 [2023-11-19 05:01:13,890 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 [2023-11-19 05:01:13,895 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 1977 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s 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, 13.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:13,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 5492 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 5 Unknown, 0 Unchecked, 13.0s Time] [2023-11-19 05:01:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2023-11-19 05:01:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5351. [2023-11-19 05:01:14,402 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) [2023-11-19 05:01:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 7847 transitions. [2023-11-19 05:01:14,449 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 7847 transitions. Word has length 88 [2023-11-19 05:01:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:14,456 INFO L495 AbstractCegarLoop]: Abstraction has 5351 states and 7847 transitions. [2023-11-19 05:01:14,456 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) [2023-11-19 05:01:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 7847 transitions. [2023-11-19 05:01:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 05:01:14,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:14,473 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] [2023-11-19 05:01:14,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:01:14,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:01:14,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:14,485 INFO L85 PathProgramCache]: Analyzing trace with hash 455750049, now seen corresponding path program 1 times [2023-11-19 05:01:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:14,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351774233] [2023-11-19 05:01:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-19 05:01:15,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351774233] [2023-11-19 05:01:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351774233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:15,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:15,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:15,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938460745] [2023-11-19 05:01:15,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:15,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:15,013 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) [2023-11-19 05:01:19,390 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 []