./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--media--usb--gspca--gspca_main.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--media--usb--gspca--gspca_main.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 68ead1e29a6cc769e9e712c81a52de8a551f5275fff71a8b8c48675aa28de434 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:51:54,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:51:55,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:51:55,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:51:55,020 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:51:55,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:51:55,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:51:55,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:51:55,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:51:55,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:51:55,075 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:51:55,075 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:51:55,076 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:51:55,077 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:51:55,078 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:51:55,078 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:51:55,079 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:51:55,079 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:51:55,079 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:51:55,080 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:51:55,080 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:51:55,081 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:51:55,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:51:55,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:51:55,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:51:55,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:51:55,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:51:55,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:51:55,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:51:55,105 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:51:55,106 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:51:55,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:51:55,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:51:55,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:51:55,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:51:55,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:55,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:51:55,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:51:55,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:51:55,109 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:51:55,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:51:55,109 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:51:55,110 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:51:55,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:51:55,110 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_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ead1e29a6cc769e9e712c81a52de8a551f5275fff71a8b8c48675aa28de434 [2023-11-12 00:51:55,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:51:55,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:51:55,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:51:55,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:51:55,445 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:51:55,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--media--usb--gspca--gspca_main.ko.cil.i [2023-11-12 00:51:58,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:51:59,257 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:51:59,257 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--media--usb--gspca--gspca_main.ko.cil.i [2023-11-12 00:51:59,324 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/data/ffcd88230/4ba6ce1a99d44d2798a96c2b30c34b74/FLAGb4303d36b [2023-11-12 00:51:59,341 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/data/ffcd88230/4ba6ce1a99d44d2798a96c2b30c34b74 [2023-11-12 00:51:59,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:51:59,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:51:59,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:51:59,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:51:59,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:51:59,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc2ac80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:59, skipping insertion in model container [2023-11-12 00:51:59,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:51:59" (1/1) ... [2023-11-12 00:51:59,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:52:04,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:52:04,321 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:52:04,426 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 %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5691] [2023-11-12 00:52:04,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [5732] [2023-11-12 00:52:04,429 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [5735] [2023-11-12 00:52:04,429 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [5738] [2023-11-12 00:52:04,429 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [5741] [2023-11-12 00:52:04,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:52:05,338 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:52:05,346 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:52:05,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05 WrapperNode [2023-11-12 00:52:05,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:52:05,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:52:05,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:52:05,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:52:05,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:05,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:05,841 INFO L138 Inliner]: procedures = 643, calls = 3986, calls flagged for inlining = 294, calls inlined = 195, statements flattened = 6436 [2023-11-12 00:52:05,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:52:05,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:52:05,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:52:05,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:52:05,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:05,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:05,898 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:05,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:06,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:06,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:06,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:06,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:06,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:52:06,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:52:06,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:52:06,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:52:06,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (1/1) ... [2023-11-12 00:52:06,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:52:06,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:52:06,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:52:06,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb7064fc-b0c5-412d-b488-d972827519f2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:52:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-12 00:52:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-12 00:52:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure PDEBUG_MODE [2023-11-12 00:52:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure PDEBUG_MODE [2023-11-12 00:52:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2023-11-12 00:52:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2023-11-12 00:52:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure alt_xfer [2023-11-12 00:52:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_xfer [2023-11-12 00:52:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2023-11-12 00:52:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2023-11-12 00:52:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:52:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:52:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure dev_poll [2023-11-12 00:52:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_poll [2023-11-12 00:52:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2023-11-12 00:52:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2023-11-12 00:52:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2023-11-12 00:52:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2023-11-12 00:52:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure frame_ready_nolock [2023-11-12 00:52:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure frame_ready_nolock [2023-11-12 00:52:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_usb_alloc_coherent [2023-11-12 00:52:06,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_usb_alloc_coherent [2023-11-12 00:52:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure frame_ready [2023-11-12 00:52:06,236 INFO L138 BoogieDeclarations]: Found implementation of procedure frame_ready [2023-11-12 00:52:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-12 00:52:06,237 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-12 00:52:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2023-11-12 00:52:06,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2023-11-12 00:52:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2023-11-12 00:52:06,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2023-11-12 00:52:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_set_alt0 [2023-11-12 00:52:06,238 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_set_alt0 [2023-11-12 00:52:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2023-11-12 00:52:06,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2023-11-12 00:52:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-12 00:52:06,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-12 00:52:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2023-11-12 00:52:06,239 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2023-11-12 00:52:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-12 00:52:06,239 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-12 00:52:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2023-11-12 00:52:06,240 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2023-11-12 00:52:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:52:06,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:52:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2023-11-12 00:52:06,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2023-11-12 00:52:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_interruptible_or_killable_queue_lock_of_gspca_dev [2023-11-12 00:52:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_interruptible_or_killable_queue_lock_of_gspca_dev [2023-11-12 00:52:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2023-11-12 00:52:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2023-11-12 00:52:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:52:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_usb_lock_of_gspca_dev [2023-11-12 00:52:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_usb_lock_of_gspca_dev [2023-11-12 00:52:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2023-11-12 00:52:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2023-11-12 00:52:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2023-11-12 00:52:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2023-11-12 00:52:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:52:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2023-11-12 00:52:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2023-11-12 00:52:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timeval [2023-11-12 00:52:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timeval [2023-11-12 00:52:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 00:52:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 00:52:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:52:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2023-11-12 00:52:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2023-11-12 00:52:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:52:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-12 00:52:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2023-11-12 00:52:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2023-11-12 00:52:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:52:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2023-11-12 00:52:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2023-11-12 00:52:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:52:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:52:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2023-11-12 00:52:06,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2023-11-12 00:52:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-12 00:52:06,248 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-12 00:52:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-12 00:52:06,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-12 00:52:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2023-11-12 00:52:06,249 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2023-11-12 00:52:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2023-11-12 00:52:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2023-11-12 00:52:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-12 00:52:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-12 00:52:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2023-11-12 00:52:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2023-11-12 00:52:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2023-11-12 00:52:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2023-11-12 00:52:06,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:52:06,251 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_resume [2023-11-12 00:52:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_resume [2023-11-12 00:52:06,251 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_urbs [2023-11-12 00:52:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_urbs [2023-11-12 00:52:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:52:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 00:52:06,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 00:52:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:52:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-12 00:52:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:52:06,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:52:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-12 00:52:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-12 00:52:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:52:06,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:52:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure dev_open [2023-11-12 00:52:06,254 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_open [2023-11-12 00:52:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_queue_lock_of_gspca_dev [2023-11-12 00:52:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_queue_lock_of_gspca_dev [2023-11-12 00:52:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_vm_close [2023-11-12 00:52:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_vm_close [2023-11-12 00:52:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2023-11-12 00:52:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2023-11-12 00:52:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2023-11-12 00:52:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2023-11-12 00:52:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-12 00:52:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-12 00:52:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2023-11-12 00:52:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2023-11-12 00:52:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2023-11-12 00:52:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2023-11-12 00:52:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:52:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:52:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 00:52:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 00:52:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure wxh_to_mode [2023-11-12 00:52:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure wxh_to_mode [2023-11-12 00:52:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-12 00:52:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-12 00:52:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:52:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:52:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:52:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:52:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-11-12 00:52:06,260 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-11-12 00:52:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure frame_free [2023-11-12 00:52:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure frame_free [2023-11-12 00:52:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-12 00:52:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-12 00:52:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mmap [2023-11-12 00:52:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mmap [2023-11-12 00:52:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-12 00:52:06,265 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-12 00:52:06,265 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2023-11-12 00:52:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2023-11-12 00:52:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2023-11-12 00:52:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2023-11-12 00:52:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-12 00:52:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-12 00:52:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:52:06,274 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:52:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2023-11-12 00:52:06,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2023-11-12 00:52:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2023-11-12 00:52:06,275 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2023-11-12 00:52:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2023-11-12 00:52:06,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2023-11-12 00:52:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2023-11-12 00:52:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2023-11-12 00:52:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:52:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2023-11-12 00:52:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2023-11-12 00:52:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:52:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-12 00:52:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-12 00:52:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2023-11-12 00:52:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2023-11-12 00:52:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_usb_lock_of_gspca_dev [2023-11-12 00:52:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_usb_lock_of_gspca_dev [2023-11-12 00:52:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_usb_free_coherent [2023-11-12 00:52:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_usb_free_coherent [2023-11-12 00:52:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:52:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:52:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:52:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2023-11-12 00:52:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2023-11-12 00:52:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_module_put [2023-11-12 00:52:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_module_put [2023-11-12 00:52:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure read_alloc [2023-11-12 00:52:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure read_alloc [2023-11-12 00:52:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2023-11-12 00:52:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2023-11-12 00:52:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-12 00:52:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-12 00:52:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2023-11-12 00:52:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2023-11-12 00:52:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release_empty [2023-11-12 00:52:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release_empty [2023-11-12 00:52:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2023-11-12 00:52:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2023-11-12 00:52:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2023-11-12 00:52:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2023-11-12 00:52:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2023-11-12 00:52:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2023-11-12 00:52:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_destroy_urb [2023-11-12 00:52:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_destroy_urb [2023-11-12 00:52:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-11-12 00:52:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-11-12 00:52:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2023-11-12 00:52:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2023-11-12 00:52:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 00:52:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 00:52:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2023-11-12 00:52:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2023-11-12 00:52:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2023-11-12 00:52:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2023-11-12 00:52:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:52:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:52:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-11-12 00:52:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-11-12 00:52:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:52:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2023-11-12 00:52:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2023-11-12 00:52:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_disconnect [2023-11-12 00:52:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_disconnect [2023-11-12 00:52:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:52:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:52:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2023-11-12 00:52:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2023-11-12 00:52:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2023-11-12 00:52:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2023-11-12 00:52:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure try_fmt_vid_cap [2023-11-12 00:52:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure try_fmt_vid_cap [2023-11-12 00:52:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-12 00:52:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-12 00:52:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-12 00:52:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-12 00:52:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2023-11-12 00:52:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2023-11-12 00:52:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-12 00:52:06,285 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-12 00:52:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_interruptible_or_killable_usb_lock_of_gspca_dev [2023-11-12 00:52:06,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_interruptible_or_killable_usb_lock_of_gspca_dev [2023-11-12 00:52:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:52:06,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:52:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:52:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-12 00:52:06,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-12 00:52:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_vm_open [2023-11-12 00:52:06,287 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_vm_open [2023-11-12 00:52:07,171 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:52:07,176 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:52:07,403 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:52:13,915 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:52:15,627 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:52:15,627 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:52:15,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:52:15 BoogieIcfgContainer [2023-11-12 00:52:15,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:52:15,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:52:15,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:52:15,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:52:15,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:51:59" (1/3) ... [2023-11-12 00:52:15,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9ef08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:52:15, skipping insertion in model container [2023-11-12 00:52:15,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:52:05" (2/3) ... [2023-11-12 00:52:15,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9ef08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:52:15, skipping insertion in model container [2023-11-12 00:52:15,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:52:15" (3/3) ... [2023-11-12 00:52:15,643 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--media--usb--gspca--gspca_main.ko.cil.i [2023-11-12 00:52:15,663 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:52:15,663 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 105 error locations. [2023-11-12 00:52:15,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:52:15,759 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;@71dabc6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:52:15,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2023-11-12 00:52:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 1736 states, 1057 states have (on average 1.412488174077578) internal successors, (1493), 1212 states have internal predecessors, (1493), 461 states have call successors, (461), 113 states have call predecessors, (461), 112 states have return successors, (457), 450 states have call predecessors, (457), 457 states have call successors, (457) [2023-11-12 00:52:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-12 00:52:15,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:15,809 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:15,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting dev_openErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [wxh_to_modeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, wxh_to_modeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_linux_usb_urb_usb_alloc_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 102 more)] === [2023-11-12 00:52:15,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1072802370, now seen corresponding path program 1 times [2023-11-12 00:52:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948942745] [2023-11-12 00:52:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:15,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4019 trivial. 0 not checked. [2023-11-12 00:52:18,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:18,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948942745] [2023-11-12 00:52:18,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948942745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:18,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:52:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176769241] [2023-11-12 00:52:18,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:18,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:52:18,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:52:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:52:18,235 INFO L87 Difference]: Start difference. First operand has 1736 states, 1057 states have (on average 1.412488174077578) internal successors, (1493), 1212 states have internal predecessors, (1493), 461 states have call successors, (461), 113 states have call predecessors, (461), 112 states have return successors, (457), 450 states have call predecessors, (457), 457 states have call successors, (457) Second operand has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-12 00:52:23,110 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 [] [2023-11-12 00:52:25,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:52:29,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:52:30,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:52:30,056 INFO L93 Difference]: Finished difference Result 5023 states and 7354 transitions. [2023-11-12 00:52:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:52:30,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 397 [2023-11-12 00:52:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:52:30,118 INFO L225 Difference]: With dead ends: 5023 [2023-11-12 00:52:30,118 INFO L226 Difference]: Without dead ends: 3043 [2023-11-12 00:52:30,141 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 [2023-11-12 00:52:30,148 INFO L413 NwaCegarLoop]: 3795 mSDtfsCounter, 2291 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 5798 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:52:30,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 5798 Invalid, 775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 769 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2023-11-12 00:52:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2023-11-12 00:52:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2956. [2023-11-12 00:52:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 1940 states have (on average 1.3958762886597937) internal successors, (2708), 2064 states have internal predecessors, (2708), 745 states have call successors, (745), 180 states have call predecessors, (745), 180 states have return successors, (789), 731 states have call predecessors, (789), 745 states have call successors, (789) [2023-11-12 00:52:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 4242 transitions. [2023-11-12 00:52:30,494 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 4242 transitions. Word has length 397 [2023-11-12 00:52:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:52:30,501 INFO L495 AbstractCegarLoop]: Abstraction has 2956 states and 4242 transitions. [2023-11-12 00:52:30,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-12 00:52:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 4242 transitions. [2023-11-12 00:52:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-12 00:52:30,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:52:30,516 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:52:30,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:52:30,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_kernel_module_module_putErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [wxh_to_modeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, wxh_to_modeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_linux_usb_urb_usb_alloc_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 102 more)] === [2023-11-12 00:52:30,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:52:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1517328365, now seen corresponding path program 1 times [2023-11-12 00:52:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:52:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066173347] [2023-11-12 00:52:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:52:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:52:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:52:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4019 trivial. 0 not checked. [2023-11-12 00:52:32,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:52:32,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066173347] [2023-11-12 00:52:32,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066173347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:52:32,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:52:32,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:52:32,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689149002] [2023-11-12 00:52:32,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:52:32,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:52:32,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:52:32,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:52:32,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:52:32,251 INFO L87 Difference]: Start difference. First operand 2956 states and 4242 transitions. Second operand has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-12 00:52:39,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:52:41,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:52:43,823 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 []