./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2748addc8053ad023c4e3c8659303b8900a913629c960b74e135fe261e72552c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:51,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:52,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:22:52,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:52,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:52,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:52,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:52,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:52,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:52,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:52,114 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:52,115 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:52,116 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:52,118 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:52,118 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:52,119 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:52,119 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:52,119 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:52,120 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:52,121 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:52,121 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:52,122 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:52,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:52,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:52,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:52,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:52,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:52,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:52,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:52,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:52,126 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:52,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:52,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:52,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:52,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:52,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:52,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:52,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:52,128 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:52,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:52,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:52,131 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:52,132 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:52,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:52,133 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_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2748addc8053ad023c4e3c8659303b8900a913629c960b74e135fe261e72552c [2023-11-23 21:22:52,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:52,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:52,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:52,501 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:52,501 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:52,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2023-11-23 21:22:55,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:56,397 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:56,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2023-11-23 21:22:56,460 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/data/3448b0946/a505352f189740c689b4e2f6108a8c23/FLAG34d3359e5 [2023-11-23 21:22:56,477 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/data/3448b0946/a505352f189740c689b4e2f6108a8c23 [2023-11-23 21:22:56,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:56,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:56,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:56,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:56,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:56,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:56" (1/1) ... [2023-11-23 21:22:56,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dae48ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:56, skipping insertion in model container [2023-11-23 21:22:56,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:56" (1/1) ... [2023-11-23 21:22:56,637 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:57,654 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-23 21:22:58,195 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_299d8fe2-89a2-4dc9-be18-9e3ff363706d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225414,225427] [2023-11-23 21:22:58,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:58,306 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:58,504 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6012] [2023-11-23 21:22:58,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6014] [2023-11-23 21:22:58,507 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"); [6024] [2023-11-23 21:22:58,510 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)); [6031] [2023-11-23 21:22:58,511 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; btc %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [6038] [2023-11-23 21:22:58,512 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)); [6052-6053] [2023-11-23 21:22:58,513 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [6060] [2023-11-23 21:22:58,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6089] [2023-11-23 21:22:58,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6092] [2023-11-23 21:22:58,515 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6095] [2023-11-23 21:22:58,516 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6098] [2023-11-23 21:22:58,517 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; addl %1,%0": "+m" (v->counter): "ir" (i)); [6113] [2023-11-23 21:22:58,517 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; incl %0": "+m" (v->counter)); [6120] [2023-11-23 21:22:58,518 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; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [6128-6129] [2023-11-23 21:22:58,525 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-23 21:22:58,565 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/atmdev.h"), "i" (271), "i" (12UL)); [6401-6402] [2023-11-23 21:22:58,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6467] [2023-11-23 21:22:58,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6489] [2023-11-23 21:22:58,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___4->state): : "memory", "cc"); [6502-6503] [2023-11-23 21:22:58,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___5->state): : "memory", "cc"); [6507-6508] [2023-11-23 21:22:58,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___6->state): : "memory", "cc"); [6512-6513] [2023-11-23 21:22:58,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___7->state): : "memory", "cc"); [6517-6518] [2023-11-23 21:22:58,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret___0), "+m" (tmp___10->state): : "memory", "cc"); [6538-6539] [2023-11-23 21:22:58,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret___0), "+m" (tmp___11->state): : "memory", "cc"); [6543-6544] [2023-11-23 21:22:58,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret___0), "+m" (tmp___12->state): : "memory", "cc"); [6548-6549] [2023-11-23 21:22:58,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret___0), "+m" (tmp___13->state): : "memory", "cc"); [6553-6554] [2023-11-23 21:22:58,728 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_299d8fe2-89a2-4dc9-be18-9e3ff363706d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225414,225427] [2023-11-23 21:22:58,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:58,828 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:58,828 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:58,828 WARN L675 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:58,829 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:58,837 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:58,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58 WrapperNode [2023-11-23 21:22:58,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:58,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:58,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:58,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:58,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:58,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,045 INFO L138 Inliner]: procedures = 142, calls = 1110, calls flagged for inlining = 58, calls inlined = 57, statements flattened = 2482 [2023-11-23 21:22:59,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:59,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:59,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:59,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:59,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:59,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:59,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:59,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:59,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (1/1) ... [2023-11-23 21:22:59,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:59,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:59,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299d8fe2-89a2-4dc9-be18-9e3ff363706d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure atm_sk [2023-11-23 21:22:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_sk [2023-11-23 21:22:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2023-11-23 21:22:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2023-11-23 21:22:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:22:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure change_bit [2023-11-23 21:22:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure change_bit [2023-11-23 21:22:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure atm_alloc_charge [2023-11-23 21:22:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_alloc_charge [2023-11-23 21:22:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:22:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-23 21:22:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:22:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:22:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:22:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:22:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:22:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:22:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:22:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-11-23 21:22:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-11-23 21:22:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:22:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:22:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 21:22:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 21:22:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:22:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:22:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2023-11-23 21:22:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2023-11-23 21:22:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-11-23 21:22:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-11-23 21:22:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_ioctl [2023-11-23 21:22:59,414 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_ioctl [2023-11-23 21:22:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:22:59,415 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:22:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:22:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:22:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:22:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:22:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:22:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 21:22:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 21:22:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:22:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_dev_close [2023-11-23 21:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_dev_close [2023-11-23 21:22:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:22:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:22:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:22:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:22:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:22:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:22:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2023-11-23 21:22:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2023-11-23 21:22:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-23 21:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-23 21:22:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_send [2023-11-23 21:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_send [2023-11-23 21:22:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:22:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:22:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:22:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:22:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:22:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:22:59,421 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_create [2023-11-23 21:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_create [2023-11-23 21:22:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_close [2023-11-23 21:22:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_close [2023-11-23 21:22:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2023-11-23 21:22:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2023-11-23 21:22:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:22:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_close [2023-11-23 21:22:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_close [2023-11-23 21:22:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 21:22:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 21:22:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_put [2023-11-23 21:22:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_put [2023-11-23 21:22:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 21:22:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 21:22:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_lookup [2023-11-23 21:22:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_lookup [2023-11-23 21:22:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:22:59,426 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:22:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_send [2023-11-23 21:22:59,426 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_send [2023-11-23 21:22:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-23 21:22:59,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-23 21:22:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_send_control [2023-11-23 21:22:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_send_control [2023-11-23 21:22:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:22:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2023-11-23 21:22:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2023-11-23 21:22:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:59,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2023-11-23 21:22:59,428 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2023-11-23 21:22:59,887 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:59,890 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:23:02,642 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:23:09,597 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:23:10,097 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:23:10,098 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:23:10,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:10 BoogieIcfgContainer [2023-11-23 21:23:10,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:23:10,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:23:10,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:23:10,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:23:10,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:56" (1/3) ... [2023-11-23 21:23:10,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56134c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:23:10, skipping insertion in model container [2023-11-23 21:23:10,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:58" (2/3) ... [2023-11-23 21:23:10,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56134c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:23:10, skipping insertion in model container [2023-11-23 21:23:10,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:10" (3/3) ... [2023-11-23 21:23:10,116 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2023-11-23 21:23:10,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:23:10,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:23:10,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:23:10,234 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;@25d3118, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:23:10,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:23:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 494 states, 314 states have (on average 1.372611464968153) internal successors, (431), 331 states have internal predecessors, (431), 138 states have call successors, (138), 41 states have call predecessors, (138), 40 states have return successors, (133), 130 states have call predecessors, (133), 133 states have call successors, (133) [2023-11-23 21:23:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 21:23:10,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:10,267 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 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] [2023-11-23 21:23:10,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:10,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash 594458412, now seen corresponding path program 1 times [2023-11-23 21:23:10,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:10,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444576252] [2023-11-23 21:23:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-23 21:23:11,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:11,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444576252] [2023-11-23 21:23:11,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444576252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:11,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:11,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:11,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824680104] [2023-11-23 21:23:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:11,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:11,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:11,348 INFO L87 Difference]: Start difference. First operand has 494 states, 314 states have (on average 1.372611464968153) internal successors, (431), 331 states have internal predecessors, (431), 138 states have call successors, (138), 41 states have call predecessors, (138), 40 states have return successors, (133), 130 states have call predecessors, (133), 133 states have call successors, (133) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:23:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:12,696 INFO L93 Difference]: Finished difference Result 1432 states and 2054 transitions. [2023-11-23 21:23:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:12,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 101 [2023-11-23 21:23:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:12,729 INFO L225 Difference]: With dead ends: 1432 [2023-11-23 21:23:12,729 INFO L226 Difference]: Without dead ends: 943 [2023-11-23 21:23:12,740 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 [2023-11-23 21:23:12,744 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 654 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:12,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1237 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:23:12,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2023-11-23 21:23:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 940. [2023-11-23 21:23:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 607 states have (on average 1.3525535420098846) internal successors, (821), 626 states have internal predecessors, (821), 255 states have call successors, (255), 78 states have call predecessors, (255), 77 states have return successors, (253), 247 states have call predecessors, (253), 253 states have call successors, (253) [2023-11-23 21:23:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1329 transitions. [2023-11-23 21:23:12,953 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1329 transitions. Word has length 101 [2023-11-23 21:23:12,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:12,954 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1329 transitions. [2023-11-23 21:23:12,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 21:23:12,955 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1329 transitions. [2023-11-23 21:23:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 21:23:12,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:12,968 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 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] [2023-11-23 21:23:12,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:23:12,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:12,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:12,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1630922738, now seen corresponding path program 1 times [2023-11-23 21:23:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:12,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433119265] [2023-11-23 21:23:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-23 21:23:13,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:13,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433119265] [2023-11-23 21:23:13,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433119265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:13,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:13,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273511447] [2023-11-23 21:23:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:13,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:13,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:13,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:13,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:13,371 INFO L87 Difference]: Start difference. First operand 940 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:23:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:14,451 INFO L93 Difference]: Finished difference Result 2775 states and 3940 transitions. [2023-11-23 21:23:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2023-11-23 21:23:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:14,468 INFO L225 Difference]: With dead ends: 2775 [2023-11-23 21:23:14,468 INFO L226 Difference]: Without dead ends: 1854 [2023-11-23 21:23:14,472 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 [2023-11-23 21:23:14,473 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 653 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:14,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1177 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:23:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2023-11-23 21:23:14,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1842. [2023-11-23 21:23:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1189 states have (on average 1.3566021867115223) internal successors, (1613), 1232 states have internal predecessors, (1613), 499 states have call successors, (499), 154 states have call predecessors, (499), 153 states have return successors, (497), 479 states have call predecessors, (497), 497 states have call successors, (497) [2023-11-23 21:23:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2609 transitions. [2023-11-23 21:23:14,613 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2609 transitions. Word has length 103 [2023-11-23 21:23:14,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:14,614 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2609 transitions. [2023-11-23 21:23:14,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:23:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2609 transitions. [2023-11-23 21:23:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 21:23:14,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:14,620 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:14,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:23:14,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:14,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:14,621 INFO L85 PathProgramCache]: Analyzing trace with hash -986458599, now seen corresponding path program 1 times [2023-11-23 21:23:14,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:14,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151718908] [2023-11-23 21:23:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:14,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-23 21:23:14,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:14,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151718908] [2023-11-23 21:23:14,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151718908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:14,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:14,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62420384] [2023-11-23 21:23:14,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:14,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:14,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:14,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:14,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:14,865 INFO L87 Difference]: Start difference. First operand 1842 states and 2609 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:23:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:15,565 INFO L93 Difference]: Finished difference Result 3371 states and 4749 transitions. [2023-11-23 21:23:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2023-11-23 21:23:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:15,578 INFO L225 Difference]: With dead ends: 3371 [2023-11-23 21:23:15,578 INFO L226 Difference]: Without dead ends: 1550 [2023-11-23 21:23:15,586 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 [2023-11-23 21:23:15,587 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 566 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:15,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 503 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:23:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2023-11-23 21:23:15,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1550. [2023-11-23 21:23:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1005 states have (on average 1.354228855721393) internal successors, (1361), 1036 states have internal predecessors, (1361), 403 states have call successors, (403), 142 states have call predecessors, (403), 141 states have return successors, (401), 387 states have call predecessors, (401), 401 states have call successors, (401) [2023-11-23 21:23:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2165 transitions. [2023-11-23 21:23:15,699 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2165 transitions. Word has length 117 [2023-11-23 21:23:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:15,700 INFO L495 AbstractCegarLoop]: Abstraction has 1550 states and 2165 transitions. [2023-11-23 21:23:15,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:23:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2165 transitions. [2023-11-23 21:23:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 21:23:15,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:15,706 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:15,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:23:15,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:15,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1576747186, now seen corresponding path program 1 times [2023-11-23 21:23:15,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:15,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436786758] [2023-11-23 21:23:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:15,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-23 21:23:15,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:15,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436786758] [2023-11-23 21:23:15,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436786758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:15,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:15,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:15,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206181253] [2023-11-23 21:23:15,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:15,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:15,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:15,977 INFO L87 Difference]: Start difference. First operand 1550 states and 2165 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:23:16,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:16,931 INFO L93 Difference]: Finished difference Result 3139 states and 4379 transitions. [2023-11-23 21:23:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:16,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2023-11-23 21:23:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:16,948 INFO L225 Difference]: With dead ends: 3139 [2023-11-23 21:23:16,948 INFO L226 Difference]: Without dead ends: 1610 [2023-11-23 21:23:16,956 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 [2023-11-23 21:23:16,957 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 412 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:16,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1064 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:23:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2023-11-23 21:23:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1605. [2023-11-23 21:23:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1037 states have (on average 1.3558341369334619) internal successors, (1406), 1065 states have internal predecessors, (1406), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 407 states have call predecessors, (414), 414 states have call successors, (414) [2023-11-23 21:23:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2236 transitions. [2023-11-23 21:23:17,083 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2236 transitions. Word has length 128 [2023-11-23 21:23:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:17,084 INFO L495 AbstractCegarLoop]: Abstraction has 1605 states and 2236 transitions. [2023-11-23 21:23:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:23:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2236 transitions. [2023-11-23 21:23:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 21:23:17,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:17,090 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:17,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:23:17,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:17,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:17,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2119949253, now seen corresponding path program 1 times [2023-11-23 21:23:17,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:17,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899513370] [2023-11-23 21:23:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:17,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-23 21:23:18,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899513370] [2023-11-23 21:23:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899513370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:18,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:18,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:23:18,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903005344] [2023-11-23 21:23:18,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:18,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:23:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:18,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:23:18,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:18,079 INFO L87 Difference]: Start difference. First operand 1605 states and 2236 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:23:25,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:27,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:29,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:31,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:33,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:34,948 INFO L93 Difference]: Finished difference Result 2931 states and 4093 transitions. [2023-11-23 21:23:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:23:34,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2023-11-23 21:23:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:34,965 INFO L225 Difference]: With dead ends: 2931 [2023-11-23 21:23:34,965 INFO L226 Difference]: Without dead ends: 2270 [2023-11-23 21:23:34,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:23:34,970 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 950 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 367 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:34,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 852 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 1313 Invalid, 5 Unknown, 0 Unchecked, 16.6s Time] [2023-11-23 21:23:34,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2023-11-23 21:23:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2254. [2023-11-23 21:23:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1458 states have (on average 1.3573388203017833) internal successors, (1979), 1498 states have internal predecessors, (1979), 583 states have call successors, (583), 213 states have call predecessors, (583), 212 states have return successors, (581), 570 states have call predecessors, (581), 581 states have call successors, (581) [2023-11-23 21:23:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3143 transitions. [2023-11-23 21:23:35,142 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3143 transitions. Word has length 134 [2023-11-23 21:23:35,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:35,142 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 3143 transitions. [2023-11-23 21:23:35,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:23:35,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3143 transitions. [2023-11-23 21:23:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 21:23:35,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:35,148 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:35,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:23:35,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:35,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash -162593958, now seen corresponding path program 1 times [2023-11-23 21:23:35,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:35,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014350384] [2023-11-23 21:23:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-23 21:23:35,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014350384] [2023-11-23 21:23:35,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014350384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:35,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:35,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:23:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282801577] [2023-11-23 21:23:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:35,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:23:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:23:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:35,994 INFO L87 Difference]: Start difference. First operand 2254 states and 3143 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:23:42,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:45,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:47,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []