./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:18:36,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:18:36,654 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:18:36,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:18:36,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:18:36,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:18:36,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:18:36,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:18:36,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:18:36,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:18:36,735 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:18:36,735 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:18:36,736 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:18:36,738 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:18:36,739 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:18:36,739 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:18:36,740 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:18:36,741 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:18:36,741 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:18:36,742 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:18:36,742 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:18:36,743 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:18:36,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:18:36,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:18:36,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:18:36,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:18:36,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:18:36,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:18:36,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:18:36,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:18:36,751 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:18:36,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:18:36,752 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:18:36,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:36,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:18:36,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:18:36,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:18:36,754 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:18:36,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:18:36,755 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:18:36,755 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:18:36,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:18:36,756 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_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a [2023-11-19 04:18:37,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:18:37,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:18:37,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:18:37,227 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:18:37,227 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:18:37,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 04:18:40,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:18:41,414 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:18:41,415 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 04:18:41,481 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/data/08c4b2431/4beb88708c9b45ca8535897e9f2c5623/FLAG6f5e920cb [2023-11-19 04:18:41,499 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/data/08c4b2431/4beb88708c9b45ca8535897e9f2c5623 [2023-11-19 04:18:41,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:18:41,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:18:41,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:41,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:18:41,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:18:41,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:41" (1/1) ... [2023-11-19 04:18:41,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fcf30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:41, skipping insertion in model container [2023-11-19 04:18:41,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:41" (1/1) ... [2023-11-19 04:18:41,716 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:18:43,334 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_fb67260a-573f-4692-9619-c00e6412d5c6/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2023-11-19 04:18:43,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:43,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:18:43,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4690] [2023-11-19 04:18:43,608 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [4697] [2023-11-19 04:18:43,608 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; bts %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4705-4706] [2023-11-19 04:18:43,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4714-4715] [2023-11-19 04:18:43,615 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [4843] [2023-11-19 04:18:43,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4846] [2023-11-19 04:18:43,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4849] [2023-11-19 04:18:43,629 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4852] [2023-11-19 04:18:43,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [5234] [2023-11-19 04:18:43,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [5238] [2023-11-19 04:18:43,669 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [5242] [2023-11-19 04:18:43,669 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [5246] [2023-11-19 04:18:43,670 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___0), "+m" (*__ptr___3): "0" (__x___0): "memory"); [5257] [2023-11-19 04:18:43,670 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___0), "+m" (*__ptr___4): "0" (__x___0): "memory"); [5261] [2023-11-19 04:18:43,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___0), "+m" (*__ptr___5): "0" (__x___0): "memory"); [5265] [2023-11-19 04:18:43,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___0), "+m" (*__ptr___6): "0" (__x___0): "memory"); [5269] [2023-11-19 04:18:43,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___1), "+m" (*__ptr___7): "0" (__x___1): "memory"); [5280] [2023-11-19 04:18:43,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___1), "+m" (*__ptr___8): "0" (__x___1): "memory"); [5284] [2023-11-19 04:18:43,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___1), "+m" (*__ptr___9): "0" (__x___1): "memory"); [5288] [2023-11-19 04:18:43,677 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___1), "+m" (*__ptr___10): "0" (__x___1): "memory"); [5292] [2023-11-19 04:18:43,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___2), "+m" (*__ptr___11): "0" (__x___2): "memory"); [5303] [2023-11-19 04:18:43,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___2), "+m" (*__ptr___12): "0" (__x___2): "memory"); [5307] [2023-11-19 04:18:43,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___2), "+m" (*__ptr___13): "0" (__x___2): "memory"); [5311] [2023-11-19 04:18:43,679 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___2), "+m" (*__ptr___14): "0" (__x___2): "memory"); [5315] [2023-11-19 04:18:43,684 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [5365] [2023-11-19 04:18:43,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [5369] [2023-11-19 04:18:43,721 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [5373] [2023-11-19 04:18:43,721 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [5377] [2023-11-19 04:18:43,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___0), "+m" (*__ptr___3): "0" (__x___0): "memory"); [5388] [2023-11-19 04:18:43,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___0), "+m" (*__ptr___4): "0" (__x___0): "memory"); [5392] [2023-11-19 04:18:43,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___0), "+m" (*__ptr___5): "0" (__x___0): "memory"); [5396] [2023-11-19 04:18:43,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___0), "+m" (*__ptr___6): "0" (__x___0): "memory"); [5400] [2023-11-19 04:18:43,724 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___1), "+m" (*__ptr___7): "0" (__x___1): "memory"); [5411] [2023-11-19 04:18:43,724 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___1), "+m" (*__ptr___8): "0" (__x___1): "memory"); [5415] [2023-11-19 04:18:43,725 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___1), "+m" (*__ptr___9): "0" (__x___1): "memory"); [5419] [2023-11-19 04:18:43,725 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___1), "+m" (*__ptr___10): "0" (__x___1): "memory"); [5423] [2023-11-19 04:18:43,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___2), "+m" (*__ptr___11): "0" (__x___2): "memory"); [5434] [2023-11-19 04:18:43,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___2), "+m" (*__ptr___12): "0" (__x___2): "memory"); [5438] [2023-11-19 04:18:43,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___2), "+m" (*__ptr___13): "0" (__x___2): "memory"); [5442] [2023-11-19 04:18:43,734 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___2), "+m" (*__ptr___14): "0" (__x___2): "memory"); [5446] [2023-11-19 04:18:43,740 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [5520] [2023-11-19 04:18:43,741 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [5524] [2023-11-19 04:18:43,741 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [5528] [2023-11-19 04:18:43,755 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [5532] [2023-11-19 04:18:43,758 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___0), "+m" (*__ptr___3): "0" (__x___0): "memory"); [5543] [2023-11-19 04:18:43,758 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___0), "+m" (*__ptr___4): "0" (__x___0): "memory"); [5547] [2023-11-19 04:18:43,759 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___0), "+m" (*__ptr___5): "0" (__x___0): "memory"); [5551] [2023-11-19 04:18:43,760 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___0), "+m" (*__ptr___6): "0" (__x___0): "memory"); [5555] [2023-11-19 04:18:43,760 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x___1), "+m" (*__ptr___7): "0" (__x___1): "memory"); [5566] [2023-11-19 04:18:43,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x___1), "+m" (*__ptr___8): "0" (__x___1): "memory"); [5570] [2023-11-19 04:18:43,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x___1), "+m" (*__ptr___9): "0" (__x___1): "memory"); [5574] [2023-11-19 04:18:43,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x___1), "+m" (*__ptr___10): "0" (__x___1): "memory"); [5578] [2023-11-19 04:18:43,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [6518] [2023-11-19 04:18:43,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [6521] [2023-11-19 04:18:43,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [6524] [2023-11-19 04:18:43,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [6527] [2023-11-19 04:18:43,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [6530] [2023-11-19 04:18:43,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_1": "=a" (__ret_gu), "=d" (__val_gu): "0" (p)); [6543] [2023-11-19 04:18:43,899 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_2": "=a" (__ret_gu), "=d" (__val_gu): "0" (p)); [6546] [2023-11-19 04:18:43,900 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_4": "=a" (__ret_gu), "=d" (__val_gu): "0" (p)); [6549] [2023-11-19 04:18:43,901 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_8": "=a" (__ret_gu), "=d" (__val_gu): "0" (p)); [6552] [2023-11-19 04:18:43,901 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_X": "=a" (__ret_gu), "=d" (__val_gu): "0" (p)); [6555] [2023-11-19 04:18:43,903 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_1": "=a" (__ret_gu___0), "=d" (__val_gu___0): "0" (p)); [6577] [2023-11-19 04:18:43,904 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_2": "=a" (__ret_gu___0), "=d" (__val_gu___0): "0" (p)); [6580] [2023-11-19 04:18:43,904 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_4": "=a" (__ret_gu___0), "=d" (__val_gu___0): "0" (p)); [6583] [2023-11-19 04:18:43,905 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_8": "=a" (__ret_gu___0), "=d" (__val_gu___0): "0" (p)); [6586] [2023-11-19 04:18:43,905 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_X": "=a" (__ret_gu___0), "=d" (__val_gu___0): "0" (p)); [6589] [2023-11-19 04:18:43,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6622-6623] [2023-11-19 04:18:43,911 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6626-6627] [2023-11-19 04:18:43,912 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6630-6631] [2023-11-19 04:18:43,912 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6634-6635] [2023-11-19 04:18:43,914 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6638-6639] [2023-11-19 04:18:43,915 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_1": "=a" (__ret_gu___1), "=d" (__val_gu___1): "0" (p)); [6652] [2023-11-19 04:18:43,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_2": "=a" (__ret_gu___1), "=d" (__val_gu___1): "0" (p)); [6655] [2023-11-19 04:18:43,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_4": "=a" (__ret_gu___1), "=d" (__val_gu___1): "0" (p)); [6658] [2023-11-19 04:18:43,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_8": "=a" (__ret_gu___1), "=d" (__val_gu___1): "0" (p)); [6661] [2023-11-19 04:18:43,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_X": "=a" (__ret_gu___1), "=d" (__val_gu___1): "0" (p)); [6664] [2023-11-19 04:18:43,921 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6697-6698] [2023-11-19 04:18:43,922 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6701-6702] [2023-11-19 04:18:43,922 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6705-6706] [2023-11-19 04:18:43,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6709-6710] [2023-11-19 04:18:43,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6713-6714] [2023-11-19 04:18:43,979 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_fb67260a-573f-4692-9619-c00e6412d5c6/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2023-11-19 04:18:43,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:44,197 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:44,201 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:44,201 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:44,210 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:18:44,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44 WrapperNode [2023-11-19 04:18:44,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:44,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:44,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:18:44,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:18:44,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,539 INFO L138 Inliner]: procedures = 187, calls = 890, calls flagged for inlining = 93, calls inlined = 91, statements flattened = 3369 [2023-11-19 04:18:44,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:44,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:18:44,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:18:44,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:18:44,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:18:44,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:18:44,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:18:44,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:18:44,849 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (1/1) ... [2023-11-19 04:18:44,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:44,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:44,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:18:44,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb67260a-573f-4692-9619-c00e6412d5c6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:18:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-11-19 04:18:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-11-19 04:18:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2023-11-19 04:18:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2023-11-19 04:18:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:18:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-19 04:18:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-11-19 04:18:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-11-19 04:18:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:18:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:18:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:18:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:18:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:18:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 04:18:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 04:18:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-19 04:18:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-19 04:18:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-19 04:18:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-19 04:18:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2023-11-19 04:18:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2023-11-19 04:18:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 04:18:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 04:18:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 04:18:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 04:18:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:18:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:18:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 04:18:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 04:18:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-19 04:18:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-19 04:18:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:18:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:18:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2023-11-19 04:18:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2023-11-19 04:18:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:18:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:18:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:18:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-19 04:18:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-19 04:18:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 04:18:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 04:18:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:18:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:18:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 04:18:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 04:18:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-19 04:18:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-19 04:18:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:18:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-19 04:18:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-19 04:18:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 04:18:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 04:18:44,966 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2023-11-19 04:18:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2023-11-19 04:18:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2023-11-19 04:18:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2023-11-19 04:18:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:18:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-19 04:18:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-19 04:18:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2023-11-19 04:18:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2023-11-19 04:18:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:18:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:18:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 04:18:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 04:18:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-19 04:18:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-19 04:18:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2023-11-19 04:18:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2023-11-19 04:18:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-19 04:18:44,977 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-19 04:18:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2023-11-19 04:18:44,978 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2023-11-19 04:18:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:18:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-19 04:18:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-19 04:18:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-19 04:18:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-19 04:18:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-19 04:18:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-19 04:18:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2023-11-19 04:18:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2023-11-19 04:18:44,986 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2023-11-19 04:18:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2023-11-19 04:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2023-11-19 04:18:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2023-11-19 04:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:18:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2023-11-19 04:18:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2023-11-19 04:18:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 04:18:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 04:18:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:18:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:18:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2023-11-19 04:18:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2023-11-19 04:18:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 04:18:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 04:18:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 04:18:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 04:18:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2023-11-19 04:18:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2023-11-19 04:18:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-11-19 04:18:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-11-19 04:18:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 04:18:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 04:18:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 04:18:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 04:18:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-19 04:18:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-19 04:18:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 04:18:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 04:18:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:18:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2023-11-19 04:18:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2023-11-19 04:18:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2023-11-19 04:18:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2023-11-19 04:18:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-19 04:18:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-19 04:18:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:18:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:18:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:18:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2023-11-19 04:18:44,994 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2023-11-19 04:18:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2023-11-19 04:18:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2023-11-19 04:18:45,772 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:18:45,777 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:18:46,008 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:18:50,097 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:18:51,950 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:18:51,950 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:18:51,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:51 BoogieIcfgContainer [2023-11-19 04:18:51,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:18:51,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:18:51,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:18:51,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:18:51,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:18:41" (1/3) ... [2023-11-19 04:18:51,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740b350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:51, skipping insertion in model container [2023-11-19 04:18:51,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:44" (2/3) ... [2023-11-19 04:18:51,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740b350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:51, skipping insertion in model container [2023-11-19 04:18:51,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:51" (3/3) ... [2023-11-19 04:18:51,980 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 04:18:52,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:18:52,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:18:52,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:18:52,105 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;@2c183139, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:18:52,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:18:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 825 states, 518 states have (on average 1.38996138996139) internal successors, (720), 550 states have internal predecessors, (720), 252 states have call successors, (252), 54 states have call predecessors, (252), 53 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-11-19 04:18:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 04:18:52,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:52,171 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-19 04:18:52,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:52,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:52,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1492734019, now seen corresponding path program 1 times [2023-11-19 04:18:52,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:52,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478405811] [2023-11-19 04:18:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-11-19 04:18:53,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:53,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478405811] [2023-11-19 04:18:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478405811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:53,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:53,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:53,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216291750] [2023-11-19 04:18:53,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:53,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:53,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:53,319 INFO L87 Difference]: Start difference. First operand has 825 states, 518 states have (on average 1.38996138996139) internal successors, (720), 550 states have internal predecessors, (720), 252 states have call successors, (252), 54 states have call predecessors, (252), 53 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 04:18:55,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:18:57,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:18:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:58,870 INFO L93 Difference]: Finished difference Result 2093 states and 3066 transitions. [2023-11-19 04:18:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:58,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-19 04:18:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:58,916 INFO L225 Difference]: With dead ends: 2093 [2023-11-19 04:18:58,916 INFO L226 Difference]: Without dead ends: 1226 [2023-11-19 04:18:58,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:58,936 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 711 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:58,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2084 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 318 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-11-19 04:18:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2023-11-19 04:18:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1226. [2023-11-19 04:18:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 766 states have (on average 1.3577023498694516) internal successors, (1040), 799 states have internal predecessors, (1040), 366 states have call successors, (366), 93 states have call predecessors, (366), 93 states have return successors, (366), 363 states have call predecessors, (366), 366 states have call successors, (366) [2023-11-19 04:18:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1772 transitions. [2023-11-19 04:18:59,165 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1772 transitions. Word has length 124 [2023-11-19 04:18:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:59,167 INFO L495 AbstractCegarLoop]: Abstraction has 1226 states and 1772 transitions. [2023-11-19 04:18:59,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-19 04:18:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1772 transitions. [2023-11-19 04:18:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-19 04:18:59,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:59,180 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:59,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:18:59,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:18:59,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1042700486, now seen corresponding path program 1 times [2023-11-19 04:18:59,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:59,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094276369] [2023-11-19 04:18:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:59,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:19:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-11-19 04:19:00,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:19:00,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094276369] [2023-11-19 04:19:00,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094276369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:19:00,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:19:00,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:19:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038139301] [2023-11-19 04:19:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:19:00,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:19:00,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:19:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:19:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:19:00,098 INFO L87 Difference]: Start difference. First operand 1226 states and 1772 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 04:19:02,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:19:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:19:04,266 INFO L93 Difference]: Finished difference Result 1642 states and 2452 transitions. [2023-11-19 04:19:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:19:04,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 184 [2023-11-19 04:19:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:19:04,288 INFO L225 Difference]: With dead ends: 1642 [2023-11-19 04:19:04,289 INFO L226 Difference]: Without dead ends: 1640 [2023-11-19 04:19:04,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:19:04,293 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 273 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:19:04,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 3780 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-19 04:19:04,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2023-11-19 04:19:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1228. [2023-11-19 04:19:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 768 states have (on average 1.3567708333333333) internal successors, (1042), 801 states have internal predecessors, (1042), 366 states have call successors, (366), 93 states have call predecessors, (366), 93 states have return successors, (366), 363 states have call predecessors, (366), 366 states have call successors, (366) [2023-11-19 04:19:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1774 transitions. [2023-11-19 04:19:04,427 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1774 transitions. Word has length 184 [2023-11-19 04:19:04,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:19:04,428 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1774 transitions. [2023-11-19 04:19:04,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 04:19:04,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1774 transitions. [2023-11-19 04:19:04,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-19 04:19:04,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:19:04,439 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:19:04,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:19:04,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:19:04,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:19:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1959462717, now seen corresponding path program 1 times [2023-11-19 04:19:04,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:19:04,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092102208] [2023-11-19 04:19:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:19:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:19:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:19:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-11-19 04:19:05,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:19:05,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092102208] [2023-11-19 04:19:05,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092102208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:19:05,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:19:05,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:19:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329503154] [2023-11-19 04:19:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:19:05,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:19:05,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:19:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:19:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:19:05,057 INFO L87 Difference]: Start difference. First operand 1228 states and 1774 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-19 04:19:08,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:19:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:19:09,371 INFO L93 Difference]: Finished difference Result 2421 states and 3502 transitions. [2023-11-19 04:19:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:19:09,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 192 [2023-11-19 04:19:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:19:09,386 INFO L225 Difference]: With dead ends: 2421 [2023-11-19 04:19:09,386 INFO L226 Difference]: Without dead ends: 1233 [2023-11-19 04:19:09,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:19:09,397 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 1100 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:19:09,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1551 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 761 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-19 04:19:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2023-11-19 04:19:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1229. [2023-11-19 04:19:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 769 states have (on average 1.3563068920676202) internal successors, (1043), 802 states have internal predecessors, (1043), 366 states have call successors, (366), 93 states have call predecessors, (366), 93 states have return successors, (366), 363 states have call predecessors, (366), 366 states have call successors, (366) [2023-11-19 04:19:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1775 transitions. [2023-11-19 04:19:09,486 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1775 transitions. Word has length 192 [2023-11-19 04:19:09,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:19:09,488 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1775 transitions. [2023-11-19 04:19:09,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-19 04:19:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1775 transitions. [2023-11-19 04:19:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 04:19:09,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:19:09,497 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:19:09,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:19:09,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:19:09,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:19:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1733414105, now seen corresponding path program 1 times [2023-11-19 04:19:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:19:09,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520610601] [2023-11-19 04:19:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:19:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:19:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:19:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-11-19 04:19:10,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:19:10,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520610601] [2023-11-19 04:19:10,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520610601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:19:10,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:19:10,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:19:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967298073] [2023-11-19 04:19:10,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:19:10,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:19:10,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:19:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:19:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:19:10,156 INFO L87 Difference]: Start difference. First operand 1229 states and 1775 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-19 04:19:11,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:19:13,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:19:16,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:19:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:19:17,412 INFO L93 Difference]: Finished difference Result 1658 states and 2474 transitions. [2023-11-19 04:19:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:19:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 193 [2023-11-19 04:19:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:19:17,433 INFO L225 Difference]: With dead ends: 1658 [2023-11-19 04:19:17,433 INFO L226 Difference]: Without dead ends: 1656 [2023-11-19 04:19:17,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:19:17,437 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 330 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 5074 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:19:17,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 5074 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 642 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2023-11-19 04:19:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2023-11-19 04:19:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1231. [2023-11-19 04:19:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 770 states have (on average 1.3558441558441559) internal successors, (1044), 802 states have internal predecessors, (1044), 367 states have call successors, (367), 93 states have call predecessors, (367), 93 states have return successors, (367), 364 states have call predecessors, (367), 367 states have call successors, (367) [2023-11-19 04:19:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1778 transitions. [2023-11-19 04:19:17,594 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1778 transitions. Word has length 193 [2023-11-19 04:19:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:19:17,595 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1778 transitions. [2023-11-19 04:19:17,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-19 04:19:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1778 transitions. [2023-11-19 04:19:17,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-19 04:19:17,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:19:17,612 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 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] [2023-11-19 04:19:17,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:19:17,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:19:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:19:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash 82630173, now seen corresponding path program 1 times [2023-11-19 04:19:17,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:19:17,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571243550] [2023-11-19 04:19:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:19:17,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:19:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:19:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-19 04:19:18,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:19:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571243550] [2023-11-19 04:19:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571243550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:19:18,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:19:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:19:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099845068] [2023-11-19 04:19:18,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:19:18,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:19:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:19:18,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:19:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:19:18,058 INFO L87 Difference]: Start difference. First operand 1231 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-19 04:19:19,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:19:22,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:19:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:19:23,632 INFO L93 Difference]: Finished difference Result 3579 states and 5170 transitions. [2023-11-19 04:19:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:19:23,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 217 [2023-11-19 04:19:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:19:23,658 INFO L225 Difference]: With dead ends: 3579 [2023-11-19 04:19:23,658 INFO L226 Difference]: Without dead ends: 2388 [2023-11-19 04:19:23,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:19:23,669 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 1075 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:19:23,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2514 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-11-19 04:19:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2023-11-19 04:19:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2384. [2023-11-19 04:19:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2384 states, 1494 states have (on average 1.358768406961178) internal successors, (2030), 1558 states have internal predecessors, (2030), 706 states have call successors, (706), 183 states have call predecessors, (706), 183 states have return successors, (706), 698 states have call predecessors, (706), 706 states have call successors, (706) [2023-11-19 04:19:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 3442 transitions. [2023-11-19 04:19:23,999 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 3442 transitions. Word has length 217 [2023-11-19 04:19:24,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:19:24,000 INFO L495 AbstractCegarLoop]: Abstraction has 2384 states and 3442 transitions. [2023-11-19 04:19:24,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-19 04:19:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 3442 transitions. [2023-11-19 04:19:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-19 04:19:24,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:19:24,026 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 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, 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, 1] [2023-11-19 04:19:24,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:19:24,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:19:24,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:19:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash -212603754, now seen corresponding path program 1 times [2023-11-19 04:19:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:19:24,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234205563] [2023-11-19 04:19:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:19:24,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:19:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:19:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-19 04:19:24,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:19:24,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234205563] [2023-11-19 04:19:24,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234205563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:19:24,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:19:24,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:19:24,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092937286] [2023-11-19 04:19:24,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:19:24,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:19:24,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:19:24,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:19:24,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:19:24,446 INFO L87 Difference]: Start difference. First operand 2384 states and 3442 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29)