./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/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_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-24 23:50:33,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:33,291 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:50:33,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:33,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:33,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:33,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:33,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:33,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:33,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:33,332 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:33,332 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:33,333 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:33,334 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:50:33,334 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:33,335 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:33,335 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:50:33,336 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:50:33,337 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:33,337 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:50:33,338 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:50:33,339 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:50:33,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:33,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:33,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:50:33,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:33,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:33,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:33,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:33,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:33,344 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:33,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:33,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:50:33,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:33,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:33,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:33,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:33,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:33,347 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:50:33,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:50:33,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:33,349 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:33,349 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:33,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:33,350 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_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2023-11-24 23:50:33,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:33,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:33,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:33,645 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:33,646 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:33,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-24 23:50:36,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:37,396 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:37,397 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-24 23:50:37,449 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/data/09771ed66/1203c65bf72e4fb6883284f8ac478edd/FLAG7e599cf47 [2023-11-24 23:50:37,473 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/data/09771ed66/1203c65bf72e4fb6883284f8ac478edd [2023-11-24 23:50:37,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:37,482 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:37,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:37,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:37,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:37,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:37,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e42ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:37, skipping insertion in model container [2023-11-24 23:50:37,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:37" (1/1) ... [2023-11-24 23:50:37,667 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:40,081 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_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2023-11-24 23:50:40,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:40,236 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:40,341 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] [2023-11-24 23:50:40,345 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] [2023-11-24 23:50:40,346 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] [2023-11-24 23:50:40,346 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] [2023-11-24 23:50:40,347 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] [2023-11-24 23:50:40,347 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] [2023-11-24 23:50:40,636 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] [2023-11-24 23:50:40,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6914] [2023-11-24 23:50:40,636 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] [2023-11-24 23:50:40,637 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] [2023-11-24 23:50:40,638 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] [2023-11-24 23:50:40,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6969] [2023-11-24 23:50:40,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6972] [2023-11-24 23:50:40,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6975] [2023-11-24 23:50:40,640 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6978] [2023-11-24 23:50:40,640 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [7000] [2023-11-24 23:50:40,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7003] [2023-11-24 23:50:40,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7006] [2023-11-24 23:50:40,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7009] [2023-11-24 23:50:40,729 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_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2023-11-24 23:50:40,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:40,864 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:40,864 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:40,864 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:40,872 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:40,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40 WrapperNode [2023-11-24 23:50:40,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:40,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:40,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:40,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:40,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,262 INFO L138 Inliner]: procedures = 373, calls = 3058, calls flagged for inlining = 174, calls inlined = 166, statements flattened = 6243 [2023-11-24 23:50:41,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:41,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:41,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:41,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:41,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:41,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:41,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:41,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:41,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (1/1) ... [2023-11-24 23:50:41,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:41,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:41,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:41,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fe312a9-9878-45b4-bdc9-7510ae0f7f77/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2023-11-24 23:50:41,712 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2023-11-24 23:50:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2023-11-24 23:50:41,713 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2023-11-24 23:50:41,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2023-11-24 23:50:41,714 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2023-11-24 23:50:41,714 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2023-11-24 23:50:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2023-11-24 23:50:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-24 23:50:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-24 23:50:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-24 23:50:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-24 23:50:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-24 23:50:41,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-24 23:50:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-24 23:50:41,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-24 23:50:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2023-11-24 23:50:41,719 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2023-11-24 23:50:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-24 23:50:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-24 23:50:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2023-11-24 23:50:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2023-11-24 23:50:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2023-11-24 23:50:41,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2023-11-24 23:50:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2023-11-24 23:50:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2023-11-24 23:50:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2023-11-24 23:50:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2023-11-24 23:50:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:50:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:50:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-24 23:50:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-24 23:50:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2023-11-24 23:50:41,722 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2023-11-24 23:50:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2023-11-24 23:50:41,722 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2023-11-24 23:50:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2023-11-24 23:50:41,722 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2023-11-24 23:50:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-11-24 23:50:41,723 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-11-24 23:50:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-24 23:50:41,725 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-24 23:50:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-24 23:50:41,725 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-24 23:50:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-24 23:50:41,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-24 23:50:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2023-11-24 23:50:41,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2023-11-24 23:50:41,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2023-11-24 23:50:41,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2023-11-24 23:50:41,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-24 23:50:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-24 23:50:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2023-11-24 23:50:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2023-11-24 23:50:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-24 23:50:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-24 23:50:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-24 23:50:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-24 23:50:41,728 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2023-11-24 23:50:41,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2023-11-24 23:50:41,728 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2023-11-24 23:50:41,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2023-11-24 23:50:41,729 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2023-11-24 23:50:41,729 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2023-11-24 23:50:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2023-11-24 23:50:41,730 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2023-11-24 23:50:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2023-11-24 23:50:41,730 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2023-11-24 23:50:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-24 23:50:41,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-24 23:50:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-24 23:50:41,731 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-24 23:50:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-24 23:50:41,731 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-24 23:50:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-24 23:50:41,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-24 23:50:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-24 23:50:41,732 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-24 23:50:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:50:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-24 23:50:41,732 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-24 23:50:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2023-11-24 23:50:41,732 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2023-11-24 23:50:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2023-11-24 23:50:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2023-11-24 23:50:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2023-11-24 23:50:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2023-11-24 23:50:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2023-11-24 23:50:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2023-11-24 23:50:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-24 23:50:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-24 23:50:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2023-11-24 23:50:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2023-11-24 23:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:50:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-24 23:50:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-24 23:50:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-24 23:50:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2023-11-24 23:50:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2023-11-24 23:50:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2023-11-24 23:50:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2023-11-24 23:50:41,737 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-24 23:50:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-24 23:50:41,737 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2023-11-24 23:50:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2023-11-24 23:50:41,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:50:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:50:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:50:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:50:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-24 23:50:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-24 23:50:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2023-11-24 23:50:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2023-11-24 23:50:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-24 23:50:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-24 23:50:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-24 23:50:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-24 23:50:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-24 23:50:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-24 23:50:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-11-24 23:50:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-11-24 23:50:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-24 23:50:41,742 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-24 23:50:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2023-11-24 23:50:41,743 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2023-11-24 23:50:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2023-11-24 23:50:41,746 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2023-11-24 23:50:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-24 23:50:41,747 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-24 23:50:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-24 23:50:41,748 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-24 23:50:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2023-11-24 23:50:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2023-11-24 23:50:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-11-24 23:50:41,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-11-24 23:50:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-24 23:50:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-24 23:50:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2023-11-24 23:50:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2023-11-24 23:50:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-24 23:50:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-24 23:50:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-24 23:50:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-24 23:50:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-11-24 23:50:41,758 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2023-11-24 23:50:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-24 23:50:41,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-24 23:50:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-24 23:50:41,758 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-24 23:50:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2023-11-24 23:50:41,759 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2023-11-24 23:50:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2023-11-24 23:50:41,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2023-11-24 23:50:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2023-11-24 23:50:41,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2023-11-24 23:50:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-11-24 23:50:41,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-11-24 23:50:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2023-11-24 23:50:41,760 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2023-11-24 23:50:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-11-24 23:50:41,760 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-11-24 23:50:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:50:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-11-24 23:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-11-24 23:50:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-24 23:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-24 23:50:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-24 23:50:41,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-24 23:50:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2023-11-24 23:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2023-11-24 23:50:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2023-11-24 23:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2023-11-24 23:50:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-24 23:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-24 23:50:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-24 23:50:41,762 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-24 23:50:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2023-11-24 23:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2023-11-24 23:50:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-24 23:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-24 23:50:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-24 23:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-24 23:50:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-24 23:50:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-24 23:50:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:50:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-24 23:50:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-24 23:50:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2023-11-24 23:50:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2023-11-24 23:50:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-11-24 23:50:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-24 23:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-24 23:50:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-24 23:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-24 23:50:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:50:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-11-24 23:50:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-11-24 23:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2023-11-24 23:50:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2023-11-24 23:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-24 23:50:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-24 23:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:50:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2023-11-24 23:50:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2023-11-24 23:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-24 23:50:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:50:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:50:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:50:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:50:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2023-11-24 23:50:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2023-11-24 23:50:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2023-11-24 23:50:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2023-11-24 23:50:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-24 23:50:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-24 23:50:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-11-24 23:50:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-11-24 23:50:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2023-11-24 23:50:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2023-11-24 23:50:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-24 23:50:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-24 23:50:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2023-11-24 23:50:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2023-11-24 23:50:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2023-11-24 23:50:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2023-11-24 23:50:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-24 23:50:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-24 23:50:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2023-11-24 23:50:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2023-11-24 23:50:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-24 23:50:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-24 23:50:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2023-11-24 23:50:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2023-11-24 23:50:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:50:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-24 23:50:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2023-11-24 23:50:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2023-11-24 23:50:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-24 23:50:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-24 23:50:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:50:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-24 23:50:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-24 23:50:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-11-24 23:50:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-11-24 23:50:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-11-24 23:50:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-11-24 23:50:42,703 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:42,708 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:52,553 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:53,956 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:53,957 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:50:53,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:53 BoogieIcfgContainer [2023-11-24 23:50:53,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:53,963 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:53,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:53,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:53,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:37" (1/3) ... [2023-11-24 23:50:53,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a0efe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:53, skipping insertion in model container [2023-11-24 23:50:53,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:40" (2/3) ... [2023-11-24 23:50:53,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a0efe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:53, skipping insertion in model container [2023-11-24 23:50:53,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:53" (3/3) ... [2023-11-24 23:50:53,975 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-24 23:50:53,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:54,000 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:50:54,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:54,118 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;@1d62844f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:54,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:50:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 1668 states, 1021 states have (on average 1.3202742409402546) internal successors, (1348), 1053 states have internal predecessors, (1348), 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) [2023-11-24 23:50:54,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:50:54,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:54,144 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] [2023-11-24 23:50:54,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:54,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1086527161, now seen corresponding path program 1 times [2023-11-24 23:50:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:54,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062890763] [2023-11-24 23:50:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:55,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:55,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062890763] [2023-11-24 23:50:55,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062890763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:55,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:55,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:50:55,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654328775] [2023-11-24 23:50:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:55,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:50:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:55,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:50:55,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:50:55,118 INFO L87 Difference]: Start difference. First operand has 1668 states, 1021 states have (on average 1.3202742409402546) internal successors, (1348), 1053 states have internal predecessors, (1348), 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) [2023-11-24 23:50:57,799 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 [] [2023-11-24 23:51:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:00,435 INFO L93 Difference]: Finished difference Result 4708 states and 7050 transitions. [2023-11-24 23:51:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:00,437 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 [2023-11-24 23:51:00,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:00,499 INFO L225 Difference]: With dead ends: 4708 [2023-11-24 23:51:00,499 INFO L226 Difference]: Without dead ends: 3071 [2023-11-24 23:51:00,523 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 [2023-11-24 23:51:00,527 INFO L413 NwaCegarLoop]: 2262 mSDtfsCounter, 2382 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 4131 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:00,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2382 Valid, 4131 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 432 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-11-24 23:51:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2023-11-24 23:51:00,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3066. [2023-11-24 23:51:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 1881 states have (on average 1.3179160021265284) internal successors, (2479), 1940 states have internal predecessors, (2479), 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) [2023-11-24 23:51:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4464 transitions. [2023-11-24 23:51:00,941 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4464 transitions. Word has length 23 [2023-11-24 23:51:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:00,942 INFO L495 AbstractCegarLoop]: Abstraction has 3066 states and 4464 transitions. [2023-11-24 23:51:00,944 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) [2023-11-24 23:51:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4464 transitions. [2023-11-24 23:51:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:51:00,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:00,947 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] [2023-11-24 23:51:00,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:51:00,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:00,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -679454172, now seen corresponding path program 1 times [2023-11-24 23:51:00,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:00,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835032237] [2023-11-24 23:51:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:01,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:01,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835032237] [2023-11-24 23:51:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835032237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:01,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:01,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:01,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194220976] [2023-11-24 23:51:01,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:01,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:01,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:01,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:01,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:01,437 INFO L87 Difference]: Start difference. First operand 3066 states and 4464 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) [2023-11-24 23:51:04,296 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 [] [2023-11-24 23:51:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:05,600 INFO L93 Difference]: Finished difference Result 3068 states and 4465 transitions. [2023-11-24 23:51:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:05,601 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 [2023-11-24 23:51:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:05,629 INFO L225 Difference]: With dead ends: 3068 [2023-11-24 23:51:05,629 INFO L226 Difference]: Without dead ends: 3065 [2023-11-24 23:51:05,632 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 [2023-11-24 23:51:05,634 INFO L413 NwaCegarLoop]: 2165 mSDtfsCounter, 2372 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:05,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 2166 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-11-24 23:51:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2023-11-24 23:51:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 3065. [2023-11-24 23:51:05,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 1881 states have (on average 1.3173843700159489) internal successors, (2478), 1939 states have internal predecessors, (2478), 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) [2023-11-24 23:51:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 4462 transitions. [2023-11-24 23:51:05,933 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 4462 transitions. Word has length 24 [2023-11-24 23:51:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:05,934 INFO L495 AbstractCegarLoop]: Abstraction has 3065 states and 4462 transitions. [2023-11-24 23:51:05,934 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) [2023-11-24 23:51:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 4462 transitions. [2023-11-24 23:51:05,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:51:05,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:05,936 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] [2023-11-24 23:51:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:51:05,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:05,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 409704220, now seen corresponding path program 1 times [2023-11-24 23:51:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:05,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908311039] [2023-11-24 23:51:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:06,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:06,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908311039] [2023-11-24 23:51:06,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908311039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:06,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:06,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:06,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625920553] [2023-11-24 23:51:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:06,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:06,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:06,388 INFO L87 Difference]: Start difference. First operand 3065 states and 4462 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) [2023-11-24 23:51:09,680 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 [] [2023-11-24 23:51:11,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:11,392 INFO L93 Difference]: Finished difference Result 3067 states and 4463 transitions. [2023-11-24 23:51:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:11,393 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 [2023-11-24 23:51:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:11,476 INFO L225 Difference]: With dead ends: 3067 [2023-11-24 23:51:11,476 INFO L226 Difference]: Without dead ends: 3064 [2023-11-24 23:51:11,478 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 [2023-11-24 23:51:11,483 INFO L413 NwaCegarLoop]: 2163 mSDtfsCounter, 2369 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:11,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2369 Valid, 2164 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-11-24 23:51:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-11-24 23:51:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3064. [2023-11-24 23:51:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 1881 states have (on average 1.3168527379053694) internal successors, (2477), 1938 states have internal predecessors, (2477), 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) [2023-11-24 23:51:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4460 transitions. [2023-11-24 23:51:11,767 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4460 transitions. Word has length 25 [2023-11-24 23:51:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:11,768 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 4460 transitions. [2023-11-24 23:51:11,768 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) [2023-11-24 23:51:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4460 transitions. [2023-11-24 23:51:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:51:11,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:11,770 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] [2023-11-24 23:51:11,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:51:11,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:11,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -186119129, now seen corresponding path program 1 times [2023-11-24 23:51:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492798929] [2023-11-24 23:51:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:12,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492798929] [2023-11-24 23:51:12,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492798929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:12,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:12,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:12,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143935819] [2023-11-24 23:51:12,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:12,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:12,124 INFO L87 Difference]: Start difference. First operand 3064 states and 4460 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) [2023-11-24 23:51:15,815 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 [] [2023-11-24 23:51:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:17,131 INFO L93 Difference]: Finished difference Result 3174 states and 4573 transitions. [2023-11-24 23:51:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:17,132 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 [2023-11-24 23:51:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:17,160 INFO L225 Difference]: With dead ends: 3174 [2023-11-24 23:51:17,160 INFO L226 Difference]: Without dead ends: 3156 [2023-11-24 23:51:17,163 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 [2023-11-24 23:51:17,164 INFO L413 NwaCegarLoop]: 2196 mSDtfsCounter, 2211 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:17,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 2378 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-11-24 23:51:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2023-11-24 23:51:17,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3152. [2023-11-24 23:51:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 1937 states have (on average 1.312338668043366) internal successors, (2542), 1991 states have internal predecessors, (2542), 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) [2023-11-24 23:51:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 4542 transitions. [2023-11-24 23:51:17,425 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 4542 transitions. Word has length 26 [2023-11-24 23:51:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:17,426 INFO L495 AbstractCegarLoop]: Abstraction has 3152 states and 4542 transitions. [2023-11-24 23:51:17,426 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) [2023-11-24 23:51:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 4542 transitions. [2023-11-24 23:51:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 23:51:17,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:17,433 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] [2023-11-24 23:51:17,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:51:17,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:17,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1884755747, now seen corresponding path program 1 times [2023-11-24 23:51:17,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:17,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549927616] [2023-11-24 23:51:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:51:17,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:17,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549927616] [2023-11-24 23:51:17,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549927616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:17,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:17,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:51:17,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610314593] [2023-11-24 23:51:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:17,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:51:17,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:51:17,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:51:17,840 INFO L87 Difference]: Start difference. First operand 3152 states and 4542 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) [2023-11-24 23:51:20,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:51:22,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:51:24,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:51:26,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []