./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 527bcce2 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_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/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_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5 --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-527bcce [2023-11-21 19:50:10,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:50:10,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:50:10,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:50:10,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:50:10,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:50:10,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:50:10,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:50:10,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:50:10,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:50:10,977 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:50:10,977 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:50:10,978 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:50:10,978 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:50:10,979 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:50:10,979 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:50:10,980 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:50:10,980 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:50:10,981 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:50:10,981 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:50:10,982 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:50:10,983 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:50:10,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:50:10,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:50:10,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:50:10,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:50:10,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:50:10,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:50:10,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:50:10,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:50:10,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:50:10,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:50:10,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:50:10,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:50:10,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:10,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:50:10,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:50:10,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:50:10,989 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:50:10,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:50:10,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:50:10,990 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:50:10,990 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:50:10,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:50:10,990 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_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2023-11-21 19:50:11,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:50:11,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:50:11,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:50:11,364 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:50:11,365 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:50:11,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-21 19:50:14,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:50:15,109 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:50:15,110 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-21 19:50:15,157 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/data/ddaf5376a/12563ea87ff948bc90f8e196d3bea702/FLAG34e128172 [2023-11-21 19:50:15,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/data/ddaf5376a/12563ea87ff948bc90f8e196d3bea702 [2023-11-21 19:50:15,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:50:15,176 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:50:15,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:15,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:50:15,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:50:15,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:15" (1/1) ... [2023-11-21 19:50:15,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475475d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:15, skipping insertion in model container [2023-11-21 19:50:15,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:15" (1/1) ... [2023-11-21 19:50:15,431 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:50:17,720 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_52f46b4e-61bd-419b-bf14-59e81f64271b/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2023-11-21 19:50:17,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:17,915 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:50:18,004 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] [2023-11-21 19:50:18,008 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] [2023-11-21 19:50:18,009 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] [2023-11-21 19:50:18,009 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] [2023-11-21 19:50:18,010 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] [2023-11-21 19:50:18,010 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] [2023-11-21 19:50:18,396 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] [2023-11-21 19:50:18,396 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6914] [2023-11-21 19:50:18,397 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] [2023-11-21 19:50:18,398 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] [2023-11-21 19:50:18,398 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] [2023-11-21 19:50:18,399 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6969] [2023-11-21 19:50:18,399 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6972] [2023-11-21 19:50:18,400 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6975] [2023-11-21 19:50:18,400 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6978] [2023-11-21 19:50:18,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [7000] [2023-11-21 19:50:18,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7003] [2023-11-21 19:50:18,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7006] [2023-11-21 19:50:18,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7009] [2023-11-21 19:50:18,480 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_52f46b4e-61bd-419b-bf14-59e81f64271b/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2023-11-21 19:50:18,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:18,648 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:50:18,648 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:50:18,648 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:50:18,656 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:50:18,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18 WrapperNode [2023-11-21 19:50:18,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:18,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:50:18,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:50:18,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:50:18,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:18,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:18,996 INFO L138 Inliner]: procedures = 373, calls = 3058, calls flagged for inlining = 174, calls inlined = 166, statements flattened = 6105 [2023-11-21 19:50:18,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:50:18,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:50:18,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:50:18,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:50:19,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:50:19,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:50:19,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:50:19,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:50:19,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (1/1) ... [2023-11-21 19:50:19,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:19,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:19,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:50:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2023-11-21 19:50:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2023-11-21 19:50:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2023-11-21 19:50:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2023-11-21 19:50:19,544 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2023-11-21 19:50:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2023-11-21 19:50:19,545 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2023-11-21 19:50:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2023-11-21 19:50:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-21 19:50:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-21 19:50:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-21 19:50:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-21 19:50:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-21 19:50:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-21 19:50:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-21 19:50:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-21 19:50:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2023-11-21 19:50:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2023-11-21 19:50:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-21 19:50:19,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f46b4e-61bd-419b-bf14-59e81f64271b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:50:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-21 19:50:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2023-11-21 19:50:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2023-11-21 19:50:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2023-11-21 19:50:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2023-11-21 19:50:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2023-11-21 19:50:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2023-11-21 19:50:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2023-11-21 19:50:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2023-11-21 19:50:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 19:50:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 19:50:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-21 19:50:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-21 19:50:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2023-11-21 19:50:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2023-11-21 19:50:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2023-11-21 19:50:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2023-11-21 19:50:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2023-11-21 19:50:19,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2023-11-21 19:50:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-11-21 19:50:19,577 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-11-21 19:50:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-21 19:50:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-21 19:50:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-21 19:50:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-21 19:50:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 19:50:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 19:50:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2023-11-21 19:50:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2023-11-21 19:50:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2023-11-21 19:50:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2023-11-21 19:50:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-21 19:50:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-21 19:50:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2023-11-21 19:50:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2023-11-21 19:50:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-21 19:50:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-21 19:50:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-21 19:50:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-21 19:50:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2023-11-21 19:50:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2023-11-21 19:50:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2023-11-21 19:50:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2023-11-21 19:50:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2023-11-21 19:50:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2023-11-21 19:50:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2023-11-21 19:50:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2023-11-21 19:50:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2023-11-21 19:50:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2023-11-21 19:50:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-21 19:50:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-21 19:50:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-21 19:50:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-21 19:50:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-21 19:50:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-21 19:50:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-21 19:50:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-21 19:50:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 19:50:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 19:50:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:50:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-21 19:50:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-21 19:50:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2023-11-21 19:50:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2023-11-21 19:50:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2023-11-21 19:50:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2023-11-21 19:50:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2023-11-21 19:50:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2023-11-21 19:50:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2023-11-21 19:50:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2023-11-21 19:50:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-21 19:50:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-21 19:50:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2023-11-21 19:50:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2023-11-21 19:50:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:50:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-21 19:50:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-21 19:50:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-21 19:50:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2023-11-21 19:50:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2023-11-21 19:50:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2023-11-21 19:50:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2023-11-21 19:50:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 19:50:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 19:50:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2023-11-21 19:50:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2023-11-21 19:50:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:50:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:50:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 19:50:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 19:50:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 19:50:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 19:50:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2023-11-21 19:50:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2023-11-21 19:50:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-21 19:50:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-21 19:50:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-21 19:50:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-21 19:50:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-21 19:50:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-21 19:50:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-11-21 19:50:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-11-21 19:50:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-21 19:50:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-21 19:50:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2023-11-21 19:50:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2023-11-21 19:50:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2023-11-21 19:50:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2023-11-21 19:50:19,609 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-21 19:50:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-21 19:50:19,609 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-21 19:50:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-21 19:50:19,610 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2023-11-21 19:50:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2023-11-21 19:50:19,611 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-11-21 19:50:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-11-21 19:50:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-21 19:50:19,618 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-21 19:50:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2023-11-21 19:50:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2023-11-21 19:50:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-21 19:50:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-21 19:50:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-21 19:50:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-21 19:50:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-11-21 19:50:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2023-11-21 19:50:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-21 19:50:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-21 19:50:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-21 19:50:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-21 19:50:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2023-11-21 19:50:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2023-11-21 19:50:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2023-11-21 19:50:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2023-11-21 19:50:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2023-11-21 19:50:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2023-11-21 19:50:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-11-21 19:50:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-11-21 19:50:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2023-11-21 19:50:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2023-11-21 19:50:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-11-21 19:50:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-11-21 19:50:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:50:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-11-21 19:50:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-11-21 19:50:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-21 19:50:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-21 19:50:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-21 19:50:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-21 19:50:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2023-11-21 19:50:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2023-11-21 19:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2023-11-21 19:50:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2023-11-21 19:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-21 19:50:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-21 19:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-21 19:50:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-21 19:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2023-11-21 19:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2023-11-21 19:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-21 19:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-21 19:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 19:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 19:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-21 19:50:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-21 19:50:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:50:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-21 19:50:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-21 19:50:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2023-11-21 19:50:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2023-11-21 19:50:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-11-21 19:50:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-21 19:50:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-21 19:50:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-21 19:50:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-21 19:50:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 19:50:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 19:50:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-11-21 19:50:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-11-21 19:50:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2023-11-21 19:50:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2023-11-21 19:50:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-21 19:50:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-21 19:50:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:50:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2023-11-21 19:50:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2023-11-21 19:50:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:50:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:50:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-21 19:50:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:50:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:50:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-21 19:50:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-21 19:50:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2023-11-21 19:50:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2023-11-21 19:50:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2023-11-21 19:50:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2023-11-21 19:50:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-21 19:50:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-21 19:50:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-11-21 19:50:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-11-21 19:50:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2023-11-21 19:50:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2023-11-21 19:50:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-21 19:50:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-21 19:50:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2023-11-21 19:50:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2023-11-21 19:50:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2023-11-21 19:50:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2023-11-21 19:50:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-21 19:50:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-21 19:50:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2023-11-21 19:50:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2023-11-21 19:50:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-21 19:50:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-21 19:50:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2023-11-21 19:50:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2023-11-21 19:50:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:50:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:50:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2023-11-21 19:50:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2023-11-21 19:50:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-21 19:50:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-21 19:50:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:50:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-21 19:50:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-21 19:50:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:50:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:50:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-11-21 19:50:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-11-21 19:50:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-11-21 19:50:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-11-21 19:50:20,538 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:50:20,546 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:50:31,189 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:50:32,755 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:50:32,755 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:50:32,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:32 BoogieIcfgContainer [2023-11-21 19:50:32,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:50:32,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:50:32,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:50:32,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:50:32,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:50:15" (1/3) ... [2023-11-21 19:50:32,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532621c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:50:32, skipping insertion in model container [2023-11-21 19:50:32,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:18" (2/3) ... [2023-11-21 19:50:32,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532621c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:50:32, skipping insertion in model container [2023-11-21 19:50:32,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:32" (3/3) ... [2023-11-21 19:50:32,772 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-21 19:50:32,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:50:32,793 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:50:32,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:50:32,910 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;@1cbabd98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:50:32,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:50:32,925 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) [2023-11-21 19:50:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 19:50:32,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:32,940 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] [2023-11-21 19:50:32,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:50:32,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash 98616312, now seen corresponding path program 1 times [2023-11-21 19:50:32,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:32,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951549248] [2023-11-21 19:50:32,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:32,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:50:33,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:33,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951549248] [2023-11-21 19:50:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951549248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:33,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:33,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861836198] [2023-11-21 19:50:33,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:33,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:50:33,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:50:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:33,887 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) [2023-11-21 19:50:37,230 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 [] [2023-11-21 19:50:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:39,691 INFO L93 Difference]: Finished difference Result 4696 states and 7038 transitions. [2023-11-21 19:50:39,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:50:39,693 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 [2023-11-21 19:50:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:39,741 INFO L225 Difference]: With dead ends: 4696 [2023-11-21 19:50:39,741 INFO L226 Difference]: Without dead ends: 3064 [2023-11-21 19:50:39,759 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 [2023-11-21 19:50:39,763 INFO L413 NwaCegarLoop]: 2262 mSDtfsCounter, 2376 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 5.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:39,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 4129 Invalid, 438 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 432 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-11-21 19:50:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-11-21 19:50:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3059. [2023-11-21 19:50:40,177 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) [2023-11-21 19:50:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4457 transitions. [2023-11-21 19:50:40,219 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4457 transitions. Word has length 23 [2023-11-21 19:50:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:40,220 INFO L495 AbstractCegarLoop]: Abstraction has 3059 states and 4457 transitions. [2023-11-21 19:50:40,220 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) [2023-11-21 19:50:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4457 transitions. [2023-11-21 19:50:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 19:50:40,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:40,223 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] [2023-11-21 19:50:40,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:50:40,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:50:40,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1239916692, now seen corresponding path program 1 times [2023-11-21 19:50:40,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:40,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852853011] [2023-11-21 19:50:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:40,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:50:40,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852853011] [2023-11-21 19:50:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852853011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:40,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:40,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:40,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97315010] [2023-11-21 19:50:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:40,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:50:40,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:50:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:40,637 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) [2023-11-21 19:50:43,460 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 [] [2023-11-21 19:50:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:44,602 INFO L93 Difference]: Finished difference Result 3061 states and 4458 transitions. [2023-11-21 19:50:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:50:44,603 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 [2023-11-21 19:50:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:44,629 INFO L225 Difference]: With dead ends: 3061 [2023-11-21 19:50:44,630 INFO L226 Difference]: Without dead ends: 3058 [2023-11-21 19:50:44,632 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 [2023-11-21 19:50:44,634 INFO L413 NwaCegarLoop]: 2159 mSDtfsCounter, 2366 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 3.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:44,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2366 Valid, 2160 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2023-11-21 19:50:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2023-11-21 19:50:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3058. [2023-11-21 19:50:44,822 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) [2023-11-21 19:50:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4455 transitions. [2023-11-21 19:50:44,867 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4455 transitions. Word has length 24 [2023-11-21 19:50:44,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:44,867 INFO L495 AbstractCegarLoop]: Abstraction has 3058 states and 4455 transitions. [2023-11-21 19:50:44,867 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) [2023-11-21 19:50:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4455 transitions. [2023-11-21 19:50:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 19:50:44,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:44,869 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] [2023-11-21 19:50:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:50:44,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:50:44,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash 215238011, now seen corresponding path program 1 times [2023-11-21 19:50:44,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:44,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562764471] [2023-11-21 19:50:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:44,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:50:45,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562764471] [2023-11-21 19:50:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562764471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:45,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:45,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322950365] [2023-11-21 19:50:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:45,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:50:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:50:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:45,241 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) [2023-11-21 19:50:48,211 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 [] [2023-11-21 19:50:49,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:49,184 INFO L93 Difference]: Finished difference Result 3060 states and 4456 transitions. [2023-11-21 19:50:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:50:49,185 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 [2023-11-21 19:50:49,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:49,216 INFO L225 Difference]: With dead ends: 3060 [2023-11-21 19:50:49,217 INFO L226 Difference]: Without dead ends: 3057 [2023-11-21 19:50:49,221 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 [2023-11-21 19:50:49,225 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 [2023-11-21 19:50:49,229 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] [2023-11-21 19:50:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2023-11-21 19:50:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 3057. [2023-11-21 19:50:49,463 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) [2023-11-21 19:50:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4453 transitions. [2023-11-21 19:50:49,487 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4453 transitions. Word has length 25 [2023-11-21 19:50:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:49,488 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4453 transitions. [2023-11-21 19:50:49,488 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) [2023-11-21 19:50:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4453 transitions. [2023-11-21 19:50:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 19:50:49,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:49,491 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] [2023-11-21 19:50:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:50:49,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:50:49,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1919601585, now seen corresponding path program 1 times [2023-11-21 19:50:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046999180] [2023-11-21 19:50:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:50:49,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:49,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046999180] [2023-11-21 19:50:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046999180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:49,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:49,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:49,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377944324] [2023-11-21 19:50:49,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:49,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:50:49,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:49,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:50:49,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:49,930 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) [2023-11-21 19:50:53,348 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 [] [2023-11-21 19:50:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:54,697 INFO L93 Difference]: Finished difference Result 3167 states and 4566 transitions. [2023-11-21 19:50:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:50:54,698 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 [2023-11-21 19:50:54,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:54,730 INFO L225 Difference]: With dead ends: 3167 [2023-11-21 19:50:54,730 INFO L226 Difference]: Without dead ends: 3149 [2023-11-21 19:50:54,733 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 [2023-11-21 19:50:54,734 INFO L413 NwaCegarLoop]: 2190 mSDtfsCounter, 2207 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s 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, 4.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:54,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 2370 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-11-21 19:50:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2023-11-21 19:50:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3145. [2023-11-21 19:50:55,047 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) [2023-11-21 19:50:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 4535 transitions. [2023-11-21 19:50:55,074 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 4535 transitions. Word has length 26 [2023-11-21 19:50:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:55,075 INFO L495 AbstractCegarLoop]: Abstraction has 3145 states and 4535 transitions. [2023-11-21 19:50:55,075 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) [2023-11-21 19:50:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 4535 transitions. [2023-11-21 19:50:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 19:50:55,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:55,090 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] [2023-11-21 19:50:55,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:50:55,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:50:55,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash -360396695, now seen corresponding path program 1 times [2023-11-21 19:50:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190263075] [2023-11-21 19:50:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:50:55,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:55,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190263075] [2023-11-21 19:50:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190263075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:55,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:55,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:50:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204131237] [2023-11-21 19:50:55,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:55,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:50:55,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:55,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:50:55,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:50:55,515 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) [2023-11-21 19:50:59,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:51:01,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:51:03,039 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 []