./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--cpia2--cpia2.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--cpia2--cpia2.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fa9c38c50a3f15d94d0fc626840e2c4cce013e630c481336cc26ef803035e9ff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:34,712 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:34,786 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:10:34,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:34,793 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:34,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:34,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:34,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:34,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:34,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:34,823 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:34,824 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:34,825 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:34,825 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:10:34,826 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:34,826 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:34,827 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:10:34,827 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:10:34,828 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:34,828 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:10:34,829 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:10:34,829 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:10:34,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:34,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:34,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:10:34,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:34,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:34,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:34,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:34,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:34,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:34,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:34,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:34,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:34,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:34,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:34,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:34,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:34,836 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:10:34,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:10:34,837 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:34,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:34,838 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:34,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:34,838 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_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa9c38c50a3f15d94d0fc626840e2c4cce013e630c481336cc26ef803035e9ff [2023-11-23 21:10:35,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:35,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:35,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:35,103 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:35,104 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:35,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--cpia2--cpia2.ko-main.cil.out.i [2023-11-23 21:10:38,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:39,106 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:39,107 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--cpia2--cpia2.ko-main.cil.out.i [2023-11-23 21:10:39,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/data/87bf79e87/96eba38f92244f35aeba9ac21980c36a/FLAG29566873e [2023-11-23 21:10:39,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/data/87bf79e87/96eba38f92244f35aeba9ac21980c36a [2023-11-23 21:10:39,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:39,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:39,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:39,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:39,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:39,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccad72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39, skipping insertion in model container [2023-11-23 21:10:39,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,478 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:42,251 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_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--cpia2--cpia2.ko-main.cil.out.i[302833,302846] [2023-11-23 21:10:42,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:42,578 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:42,718 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"); [4676] [2023-11-23 21:10:42,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [4689-4690] [2023-11-23 21:10:42,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [4703] [2023-11-23 21:10:42,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4706] [2023-11-23 21:10:42,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4709] [2023-11-23 21:10:42,724 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4712] [2023-11-23 21:10:43,123 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; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [8156] [2023-11-23 21:10:43,279 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_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--cpia2--cpia2.ko-main.cil.out.i[302833,302846] [2023-11-23 21:10:43,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:43,477 WARN L675 CHandler]: The function strcat is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:43,477 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:43,486 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:43,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43 WrapperNode [2023-11-23 21:10:43,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:43,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:43,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:43,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:43,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:43,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:44,920 INFO L138 Inliner]: procedures = 323, calls = 3951, calls flagged for inlining = 155, calls inlined = 150, statements flattened = 8060 [2023-11-23 21:10:44,921 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:44,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:44,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:44,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:44,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:44,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:45,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:45,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:46,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:46,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:46,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:46,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:46,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:46,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:46,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:46,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:46,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (1/1) ... [2023-11-23 21:10:46,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:46,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:46,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:46,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1e01ea9-428a-4e41-88bf-bea207d9b9ef/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_usb_change_streaming_alternate [2023-11-23 21:10:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_usb_change_streaming_alternate [2023-11-23 21:10:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_usb_stream_pause [2023-11-23 21:10:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_usb_stream_pause [2023-11-23 21:10:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure set_vw_size [2023-11-23 21:10:46,867 INFO L138 BoogieDeclarations]: Found implementation of procedure set_vw_size [2023-11-23 21:10:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:10:46,867 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:10:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-23 21:10:46,868 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-23 21:10:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 21:10:46,869 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 21:10:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:10:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:10:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-11-23 21:10:46,869 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-11-23 21:10:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 21:10:46,871 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 21:10:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_send_command [2023-11-23 21:10:46,871 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_send_command [2023-11-23 21:10:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_set_low_power [2023-11-23 21:10:46,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_set_low_power [2023-11-23 21:10:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:10:46,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:10:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure set_alternate [2023-11-23 21:10:46,873 INFO L138 BoogieDeclarations]: Found implementation of procedure set_alternate [2023-11-23 21:10:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:10:46,875 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:10:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:10:46,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:10:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:10:46,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:10:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_set_high_power [2023-11-23 21:10:46,876 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_set_high_power [2023-11-23 21:10:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_reset_camera [2023-11-23 21:10:46,876 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_reset_camera [2023-11-23 21:10:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 21:10:46,877 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 21:10:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2023-11-23 21:10:46,877 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2023-11-23 21:10:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:10:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:10:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2023-11-23 21:10:46,878 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2023-11-23 21:10:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2023-11-23 21:10:46,878 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2023-11-23 21:10:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_do_command [2023-11-23 21:10:46,878 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_do_command [2023-11-23 21:10:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-23 21:10:46,879 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-23 21:10:46,879 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-11-23 21:10:46,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-11-23 21:10:46,880 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2023-11-23 21:10:46,881 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2023-11-23 21:10:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2023-11-23 21:10:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2023-11-23 21:10:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:10:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-23 21:10:46,882 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-23 21:10:46,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_v4l2_lock_of_camera_data [2023-11-23 21:10:46,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_v4l2_lock_of_camera_data [2023-11-23 21:10:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:10:46,883 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:10:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:10:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2023-11-23 21:10:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:10:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:10:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_usb_disconnect [2023-11-23 21:10:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_usb_disconnect [2023-11-23 21:10:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_try_fmt_vid_cap [2023-11-23 21:10:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_try_fmt_vid_cap [2023-11-23 21:10:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc_to_page [2023-11-23 21:10:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc_to_page [2023-11-23 21:10:46,945 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_g_parm [2023-11-23 21:10:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_g_parm [2023-11-23 21:10:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-23 21:10:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-23 21:10:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_usb_resume [2023-11-23 21:10:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_usb_resume [2023-11-23 21:10:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-23 21:10:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-23 21:10:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:10:46,946 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:10:46,947 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:10:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure waitqueue_active [2023-11-23 21:10:46,947 INFO L138 BoogieDeclarations]: Found implementation of procedure waitqueue_active [2023-11-23 21:10:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2023-11-23 21:10:46,947 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2023-11-23 21:10:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:10:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:10:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:10:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_grab [2023-11-23 21:10:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_grab [2023-11-23 21:10:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:10:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_usb_stream_stop [2023-11-23 21:10:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_usb_stream_stop [2023-11-23 21:10:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:10:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:10:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:10:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:10:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:10:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:10:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_usb_stream_resume [2023-11-23 21:10:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_usb_stream_resume [2023-11-23 21:10:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:10:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2023-11-23 21:10:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2023-11-23 21:10:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_v4l2_lock_of_camera_data [2023-11-23 21:10:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_v4l2_lock_of_camera_data [2023-11-23 21:10:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2023-11-23 21:10:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2023-11-23 21:10:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_v4l2_lock_of_camera_data [2023-11-23 21:10:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_v4l2_lock_of_camera_data [2023-11-23 21:10:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_match_video_size [2023-11-23 21:10:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_match_video_size [2023-11-23 21:10:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2023-11-23 21:10:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2023-11-23 21:10:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:10:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_send_onebyte_command [2023-11-23 21:10:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_send_onebyte_command [2023-11-23 21:10:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_v4l_poll [2023-11-23 21:10:46,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_v4l_poll [2023-11-23 21:10:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure configure_transfer_mode [2023-11-23 21:10:46,953 INFO L138 BoogieDeclarations]: Found implementation of procedure configure_transfer_mode [2023-11-23 21:10:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:10:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:10:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_set_fps [2023-11-23 21:10:46,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_set_fps [2023-11-23 21:10:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 21:10:46,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 21:10:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 21:10:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 21:10:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 21:10:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 21:10:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_fh_is_singular_file [2023-11-23 21:10:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_fh_is_singular_file [2023-11-23 21:10:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-23 21:10:46,956 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-23 21:10:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_fh_release [2023-11-23 21:10:46,960 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_fh_release [2023-11-23 21:10:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_usb_stream_start [2023-11-23 21:10:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_usb_stream_start [2023-11-23 21:10:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 21:10:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 21:10:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_dbg_dump_registers [2023-11-23 21:10:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_dbg_dump_registers [2023-11-23 21:10:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:10:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:10:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2023-11-23 21:10:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2023-11-23 21:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure cpia2_mmap [2023-11-23 21:10:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure cpia2_mmap [2023-11-23 21:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure set_all_properties [2023-11-23 21:10:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure set_all_properties [2023-11-23 21:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-23 21:10:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-23 21:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:47,902 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:47,907 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:11:14,834 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:11:19,041 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:11:19,041 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:11:19,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:19 BoogieIcfgContainer [2023-11-23 21:11:19,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:11:19,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:11:19,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:11:19,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:11:19,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:39" (1/3) ... [2023-11-23 21:11:19,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53181a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:19, skipping insertion in model container [2023-11-23 21:11:19,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:43" (2/3) ... [2023-11-23 21:11:19,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53181a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:19, skipping insertion in model container [2023-11-23 21:11:19,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:19" (3/3) ... [2023-11-23 21:11:19,059 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--usb--cpia2--cpia2.ko-main.cil.out.i [2023-11-23 21:11:19,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:11:19,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:11:19,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:11:19,357 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;@6a0e4769, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:11:19,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:11:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 1308 states, 861 states have (on average 1.3960511033681766) internal successors, (1202), 878 states have internal predecessors, (1202), 374 states have call successors, (374), 71 states have call predecessors, (374), 71 states have return successors, (374), 374 states have call predecessors, (374), 374 states have call successors, (374) [2023-11-23 21:11:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:11:19,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:19,401 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:19,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:19,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1128374837, now seen corresponding path program 1 times [2023-11-23 21:11:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:11:19,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464815910] [2023-11-23 21:11:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:19,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:11:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:11:20,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:11:20,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464815910] [2023-11-23 21:11:20,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464815910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:20,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:20,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:11:20,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017604606] [2023-11-23 21:11:20,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:20,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:11:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:11:20,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:11:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:11:20,468 INFO L87 Difference]: Start difference. First operand has 1308 states, 861 states have (on average 1.3960511033681766) internal successors, (1202), 878 states have internal predecessors, (1202), 374 states have call successors, (374), 71 states have call predecessors, (374), 71 states have return successors, (374), 374 states have call predecessors, (374), 374 states have call successors, (374) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:11:22,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:25,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []