./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:11:22,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:11:22,666 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:11:22,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:11:22,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:11:22,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:11:22,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:11:22,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:11:22,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:11:22,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:11:22,704 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:11:22,705 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:11:22,705 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:11:22,706 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:11:22,707 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:11:22,707 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:11:22,708 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:11:22,708 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:11:22,709 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:11:22,710 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:11:22,710 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:11:22,711 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:11:22,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:11:22,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:11:22,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:11:22,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:11:22,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:11:22,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:11:22,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:11:22,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:11:22,716 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:11:22,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:11:22,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:11:22,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:22,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:11:22,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:11:22,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:11:22,719 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:11:22,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:11:22,720 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:11:22,721 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:11:22,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:11:22,722 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_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2023-11-19 05:11:22,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:11:23,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:11:23,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:11:23,026 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:11:23,027 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:11:23,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-19 05:11:26,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:11:26,890 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:11:26,891 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-19 05:11:26,954 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/data/13f27b202/306cca45a1fb4b0b86d55a9af9b163f6/FLAGef32c4f03 [2023-11-19 05:11:26,977 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/data/13f27b202/306cca45a1fb4b0b86d55a9af9b163f6 [2023-11-19 05:11:26,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:11:26,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:11:26,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:26,991 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:11:26,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:11:27,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:26" (1/1) ... [2023-11-19 05:11:27,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bebd9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:27, skipping insertion in model container [2023-11-19 05:11:27,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:26" (1/1) ... [2023-11-19 05:11:27,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:11:29,624 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_9e7cd858-bf39-4412-ac5a-824fb9bf935f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2023-11-19 05:11:29,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:29,797 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:11:29,892 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"); [3515] [2023-11-19 05:11:29,896 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; subl %2,%0; sete %1": "+m" (v->counter), "=qm" (c): "ir" (i): "memory"); [3563-3564] [2023-11-19 05:11:29,897 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [3575-3576] [2023-11-19 05:11:29,897 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3579-3580] [2023-11-19 05:11:29,897 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3583-3584] [2023-11-19 05:11:29,898 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3587-3588] [2023-11-19 05:11:30,211 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)); [6907] [2023-11-19 05:11:30,211 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6914] [2023-11-19 05:11:30,212 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6923-6924] [2023-11-19 05:11:30,212 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 %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6940-6941] [2023-11-19 05:11:30,213 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)); [6955-6956] [2023-11-19 05:11:30,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6969] [2023-11-19 05:11:30,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6972] [2023-11-19 05:11:30,215 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6975] [2023-11-19 05:11:30,215 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6978] [2023-11-19 05:11:30,216 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [7000] [2023-11-19 05:11:30,216 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7003] [2023-11-19 05:11:30,217 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7006] [2023-11-19 05:11:30,217 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7009] [2023-11-19 05:11:30,335 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_9e7cd858-bf39-4412-ac5a-824fb9bf935f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2023-11-19 05:11:30,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:30,516 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:11:30,516 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:11:30,516 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:11:30,524 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:11:30,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30 WrapperNode [2023-11-19 05:11:30,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:30,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:30,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:11:30,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:11:30,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,889 INFO L138 Inliner]: procedures = 373, calls = 3058, calls flagged for inlining = 174, calls inlined = 166, statements flattened = 6105 [2023-11-19 05:11:30,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:30,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:11:30,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:11:30,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:11:30,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:30,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:31,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:31,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:31,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:31,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:31,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:11:31,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:11:31,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:11:31,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:11:31,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (1/1) ... [2023-11-19 05:11:31,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:31,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:31,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:11:31,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7cd858-bf39-4412-ac5a-824fb9bf935f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:11:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2023-11-19 05:11:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2023-11-19 05:11:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2023-11-19 05:11:31,422 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2023-11-19 05:11:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2023-11-19 05:11:31,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2023-11-19 05:11:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2023-11-19 05:11:31,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2023-11-19 05:11:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-19 05:11:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-19 05:11:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 05:11:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 05:11:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-19 05:11:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-19 05:11:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-19 05:11:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-19 05:11:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2023-11-19 05:11:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2023-11-19 05:11:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-19 05:11:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-19 05:11:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2023-11-19 05:11:31,428 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2023-11-19 05:11:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2023-11-19 05:11:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2023-11-19 05:11:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2023-11-19 05:11:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2023-11-19 05:11:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2023-11-19 05:11:31,429 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2023-11-19 05:11:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:11:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:11:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-19 05:11:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-19 05:11:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2023-11-19 05:11:31,430 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2023-11-19 05:11:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2023-11-19 05:11:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2023-11-19 05:11:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2023-11-19 05:11:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2023-11-19 05:11:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-11-19 05:11:31,431 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-11-19 05:11:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:11:31,432 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:11:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 05:11:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 05:11:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:11:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:11:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2023-11-19 05:11:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2023-11-19 05:11:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2023-11-19 05:11:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2023-11-19 05:11:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-19 05:11:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-19 05:11:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2023-11-19 05:11:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2023-11-19 05:11:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 05:11:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 05:11:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-19 05:11:31,437 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-19 05:11:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2023-11-19 05:11:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2023-11-19 05:11:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2023-11-19 05:11:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2023-11-19 05:11:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2023-11-19 05:11:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2023-11-19 05:11:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2023-11-19 05:11:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2023-11-19 05:11:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2023-11-19 05:11:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2023-11-19 05:11:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-19 05:11:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-19 05:11:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:11:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:11:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-19 05:11:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-19 05:11:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-19 05:11:31,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-19 05:11:31,441 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:11:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:11:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:11:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 05:11:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 05:11:31,442 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2023-11-19 05:11:31,442 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2023-11-19 05:11:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2023-11-19 05:11:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2023-11-19 05:11:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2023-11-19 05:11:31,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2023-11-19 05:11:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2023-11-19 05:11:31,444 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2023-11-19 05:11:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-19 05:11:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-19 05:11:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2023-11-19 05:11:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2023-11-19 05:11:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:11:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-19 05:11:31,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-19 05:11:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-19 05:11:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2023-11-19 05:11:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2023-11-19 05:11:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2023-11-19 05:11:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2023-11-19 05:11:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:11:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:11:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2023-11-19 05:11:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2023-11-19 05:11:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:11:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:11:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:11:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:11:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:11:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:11:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2023-11-19 05:11:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2023-11-19 05:11:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-19 05:11:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-19 05:11:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 05:11:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 05:11:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-19 05:11:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-19 05:11:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-11-19 05:11:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-11-19 05:11:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:11:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:11:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2023-11-19 05:11:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2023-11-19 05:11:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2023-11-19 05:11:31,453 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2023-11-19 05:11:31,454 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:11:31,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:11:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:11:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:11:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2023-11-19 05:11:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2023-11-19 05:11:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-11-19 05:11:31,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-11-19 05:11:31,460 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 05:11:31,461 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 05:11:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2023-11-19 05:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2023-11-19 05:11:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-19 05:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-19 05:11:31,467 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 05:11:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 05:11:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-11-19 05:11:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2023-11-19 05:11:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:11:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:11:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:11:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:11:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2023-11-19 05:11:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2023-11-19 05:11:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2023-11-19 05:11:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2023-11-19 05:11:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2023-11-19 05:11:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2023-11-19 05:11:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-11-19 05:11:31,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-11-19 05:11:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2023-11-19 05:11:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2023-11-19 05:11:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-11-19 05:11:31,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-11-19 05:11:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:11:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-11-19 05:11:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-11-19 05:11:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-19 05:11:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-19 05:11:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:11:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:11:31,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2023-11-19 05:11:31,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2023-11-19 05:11:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2023-11-19 05:11:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2023-11-19 05:11:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 05:11:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 05:11:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:11:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:11:31,472 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2023-11-19 05:11:31,472 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2023-11-19 05:11:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-19 05:11:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-19 05:11:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:11:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:11:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-19 05:11:31,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-19 05:11:31,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:11:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:11:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:11:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2023-11-19 05:11:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2023-11-19 05:11:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-11-19 05:11:31,474 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-19 05:11:31,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-19 05:11:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-19 05:11:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-19 05:11:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:11:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:11:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-11-19 05:11:31,475 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-11-19 05:11:31,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2023-11-19 05:11:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2023-11-19 05:11:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-19 05:11:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-19 05:11:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:11:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2023-11-19 05:11:31,476 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2023-11-19 05:11:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:11:31,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:11:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:11:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 05:11:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 05:11:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:11:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:11:31,477 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2023-11-19 05:11:31,477 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2023-11-19 05:11:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2023-11-19 05:11:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2023-11-19 05:11:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 05:11:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 05:11:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-11-19 05:11:31,478 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-11-19 05:11:31,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2023-11-19 05:11:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2023-11-19 05:11:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:11:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:11:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2023-11-19 05:11:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2023-11-19 05:11:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2023-11-19 05:11:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2023-11-19 05:11:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 05:11:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 05:11:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2023-11-19 05:11:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2023-11-19 05:11:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 05:11:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 05:11:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2023-11-19 05:11:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2023-11-19 05:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:11:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2023-11-19 05:11:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2023-11-19 05:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-19 05:11:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-19 05:11:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-19 05:11:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-19 05:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:11:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-11-19 05:11:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-11-19 05:11:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-11-19 05:11:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-11-19 05:11:32,375 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:11:32,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:11:44,016 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:11:45,476 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:11:45,480 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:11:45,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:45 BoogieIcfgContainer [2023-11-19 05:11:45,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:11:45,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:11:45,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:11:45,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:11:45,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:11:26" (1/3) ... [2023-11-19 05:11:45,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d14745a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:45, skipping insertion in model container [2023-11-19 05:11:45,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:30" (2/3) ... [2023-11-19 05:11:45,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d14745a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:45, skipping insertion in model container [2023-11-19 05:11:45,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:45" (3/3) ... [2023-11-19 05:11:45,512 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-19 05:11:45,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:11:45,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:11:45,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:11:45,659 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;@1dc81157, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:11:45,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:11:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 1662 states, 1015 states have (on average 1.3221674876847291) internal successors, (1342), 1049 states have internal predecessors, (1342), 527 states have call successors, (527), 118 states have call predecessors, (527), 118 states have return successors, (527), 513 states have call predecessors, (527), 527 states have call successors, (527) [2023-11-19 05:11:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:11:45,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:45,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:45,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:45,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash 320142440, now seen corresponding path program 1 times [2023-11-19 05:11:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:45,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831994961] [2023-11-19 05:11:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:11:46,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831994961] [2023-11-19 05:11:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831994961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:46,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:46,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:11:46,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358236220] [2023-11-19 05:11:46,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:46,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:46,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:46,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:46,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:46,576 INFO L87 Difference]: Start difference. First operand has 1662 states, 1015 states have (on average 1.3221674876847291) internal successors, (1342), 1049 states have internal predecessors, (1342), 527 states have call successors, (527), 118 states have call predecessors, (527), 118 states have return successors, (527), 513 states have call predecessors, (527), 527 states have call successors, (527) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:11:49,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:11:51,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:51,892 INFO L93 Difference]: Finished difference Result 4696 states and 7038 transitions. [2023-11-19 05:11:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:51,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2023-11-19 05:11:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:51,961 INFO L225 Difference]: With dead ends: 4696 [2023-11-19 05:11:51,961 INFO L226 Difference]: Without dead ends: 3064 [2023-11-19 05:11:51,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:51,989 INFO L413 NwaCegarLoop]: 2262 mSDtfsCounter, 2376 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:51,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 4129 Invalid, 438 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 432 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-11-19 05:11:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-11-19 05:11:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3059. [2023-11-19 05:11:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 1874 states have (on average 1.3191035218783351) internal successors, (2472), 1936 states have internal predecessors, (2472), 961 states have call successors, (961), 231 states have call predecessors, (961), 223 states have return successors, (1024), 909 states have call predecessors, (1024), 945 states have call successors, (1024) [2023-11-19 05:11:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4457 transitions. [2023-11-19 05:11:52,456 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4457 transitions. Word has length 23 [2023-11-19 05:11:52,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:52,457 INFO L495 AbstractCegarLoop]: Abstraction has 3059 states and 4457 transitions. [2023-11-19 05:11:52,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:11:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4457 transitions. [2023-11-19 05:11:52,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:11:52,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:52,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:52,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:11:52,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:52,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1332425980, now seen corresponding path program 1 times [2023-11-19 05:11:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:52,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144588026] [2023-11-19 05:11:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:52,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:11:52,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144588026] [2023-11-19 05:11:52,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144588026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:11:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124008174] [2023-11-19 05:11:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:52,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:52,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:52,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:52,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:52,883 INFO L87 Difference]: Start difference. First operand 3059 states and 4457 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:11:56,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:11:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:57,547 INFO L93 Difference]: Finished difference Result 3061 states and 4458 transitions. [2023-11-19 05:11:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:57,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-19 05:11:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:57,580 INFO L225 Difference]: With dead ends: 3061 [2023-11-19 05:11:57,580 INFO L226 Difference]: Without dead ends: 3058 [2023-11-19 05:11:57,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:57,585 INFO L413 NwaCegarLoop]: 2159 mSDtfsCounter, 2366 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:57,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2366 Valid, 2160 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 05:11:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2023-11-19 05:11:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3058. [2023-11-19 05:11:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 1874 states have (on average 1.3185699039487726) internal successors, (2471), 1935 states have internal predecessors, (2471), 960 states have call successors, (960), 231 states have call predecessors, (960), 223 states have return successors, (1024), 909 states have call predecessors, (1024), 945 states have call successors, (1024) [2023-11-19 05:11:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4455 transitions. [2023-11-19 05:11:57,808 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4455 transitions. Word has length 24 [2023-11-19 05:11:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:57,808 INFO L495 AbstractCegarLoop]: Abstraction has 3058 states and 4455 transitions. [2023-11-19 05:11:57,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:11:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4455 transitions. [2023-11-19 05:11:57,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 05:11:57,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:57,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:57,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:11:57,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:57,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1646517781, now seen corresponding path program 1 times [2023-11-19 05:11:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:57,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051594415] [2023-11-19 05:11:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:11:58,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051594415] [2023-11-19 05:11:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051594415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:58,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:11:58,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637034804] [2023-11-19 05:11:58,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:58,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:58,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:58,286 INFO L87 Difference]: Start difference. First operand 3058 states and 4455 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:12:00,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:12:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:02,254 INFO L93 Difference]: Finished difference Result 3060 states and 4456 transitions. [2023-11-19 05:12:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:02,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-11-19 05:12:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:02,284 INFO L225 Difference]: With dead ends: 3060 [2023-11-19 05:12:02,284 INFO L226 Difference]: Without dead ends: 3057 [2023-11-19 05:12:02,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:02,288 INFO L413 NwaCegarLoop]: 2157 mSDtfsCounter, 2363 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2363 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:02,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2363 Valid, 2158 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 05:12:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2023-11-19 05:12:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 3057. [2023-11-19 05:12:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 1874 states have (on average 1.3180362860192103) internal successors, (2470), 1934 states have internal predecessors, (2470), 959 states have call successors, (959), 231 states have call predecessors, (959), 223 states have return successors, (1024), 909 states have call predecessors, (1024), 945 states have call successors, (1024) [2023-11-19 05:12:02,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4453 transitions. [2023-11-19 05:12:02,527 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4453 transitions. Word has length 25 [2023-11-19 05:12:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:02,530 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4453 transitions. [2023-11-19 05:12:02,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:12:02,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4453 transitions. [2023-11-19 05:12:02,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 05:12:02,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:02,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:02,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:12:02,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:12:02,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash 495511007, now seen corresponding path program 1 times [2023-11-19 05:12:02,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:02,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571005120] [2023-11-19 05:12:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:02,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:12:02,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:02,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571005120] [2023-11-19 05:12:02,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571005120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:02,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:02,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:02,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439911531] [2023-11-19 05:12:02,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:02,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:02,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:02,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:02,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:02,923 INFO L87 Difference]: Start difference. First operand 3057 states and 4453 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:12:04,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:12:06,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:12:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:08,283 INFO L93 Difference]: Finished difference Result 3167 states and 4566 transitions. [2023-11-19 05:12:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:08,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2023-11-19 05:12:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:08,312 INFO L225 Difference]: With dead ends: 3167 [2023-11-19 05:12:08,313 INFO L226 Difference]: Without dead ends: 3149 [2023-11-19 05:12:08,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:08,317 INFO L413 NwaCegarLoop]: 2190 mSDtfsCounter, 2207 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:08,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 2370 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-11-19 05:12:08,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2023-11-19 05:12:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3145. [2023-11-19 05:12:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 1930 states have (on average 1.3134715025906736) internal successors, (2535), 1987 states have internal predecessors, (2535), 966 states have call successors, (966), 256 states have call predecessors, (966), 248 states have return successors, (1034), 919 states have call predecessors, (1034), 955 states have call successors, (1034) [2023-11-19 05:12:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 4535 transitions. [2023-11-19 05:12:08,562 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 4535 transitions. Word has length 26 [2023-11-19 05:12:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:08,563 INFO L495 AbstractCegarLoop]: Abstraction has 3145 states and 4535 transitions. [2023-11-19 05:12:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:12:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 4535 transitions. [2023-11-19 05:12:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 05:12:08,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:08,575 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:08,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:12:08,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:12:08,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 854238424, now seen corresponding path program 1 times [2023-11-19 05:12:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:08,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226745731] [2023-11-19 05:12:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:08,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:12:08,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:08,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226745731] [2023-11-19 05:12:08,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226745731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:08,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:08,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:12:08,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983448387] [2023-11-19 05:12:08,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:08,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:08,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:08,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:08,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:08,993 INFO L87 Difference]: Start difference. First operand 3145 states and 4535 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:12:12,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:12:14,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []