./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:07,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:07,972 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:09:07,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:07,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:08,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:08,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:08,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:08,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:08,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:08,031 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:08,031 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:08,032 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:08,033 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:09:08,034 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:08,034 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:08,035 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:09:08,035 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:09:08,036 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:08,036 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:09:08,036 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:09:08,037 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:09:08,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:08,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:08,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:09:08,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:08,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:08,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:08,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:08,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:08,043 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:08,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:08,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:08,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:08,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:08,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:08,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:08,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:08,045 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:09:08,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:09:08,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:08,046 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:08,046 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:08,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:08,047 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_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 [2023-11-23 21:09:08,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:08,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:08,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:08,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:08,427 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:08,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2023-11-23 21:09:11,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:12,288 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:12,289 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2023-11-23 21:09:12,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/data/a3320f6f0/5e3e78b72bd341f3b20fbc06b517ed0e/FLAG8b530f1c9 [2023-11-23 21:09:12,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/data/a3320f6f0/5e3e78b72bd341f3b20fbc06b517ed0e [2023-11-23 21:09:12,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:12,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:12,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:12,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:12,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:12,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d807648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:12, skipping insertion in model container [2023-11-23 21:09:12,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:12" (1/1) ... [2023-11-23 21:09:12,564 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:16,031 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_8aa0cabe-251c-4332-b3d0-b81978aa1ade/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2023-11-23 21:09:16,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:16,163 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:16,366 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5920] [2023-11-23 21:09:16,369 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5927] [2023-11-23 21:09:16,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [5935-5936] [2023-11-23 21:09:16,383 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [6070] [2023-11-23 21:09:16,383 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [6077] [2023-11-23 21:09:16,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [6180] [2023-11-23 21:09:16,387 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [6187] [2023-11-23 21:09:16,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [6416-6417] [2023-11-23 21:09:16,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [6445-6446] [2023-11-23 21:09:16,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (84), "i" (12UL)); [6479-6480] [2023-11-23 21:09:16,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (96), "i" (12UL)); [6503-6504] [2023-11-23 21:09:16,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/netdevice.h"), "i" (507), "i" (12UL)); [6839-6840] [2023-11-23 21:09:16,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6845] [2023-11-23 21:09:16,511 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8805] [2023-11-23 21:09:16,513 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8861] [2023-11-23 21:09:16,520 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)skb->data) [8969] [2023-11-23 21:09:16,522 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)skb2->data) [9016] [2023-11-23 21:09:16,525 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [9060] [2023-11-23 21:09:16,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9406] [2023-11-23 21:09:16,545 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9412] [2023-11-23 21:09:16,546 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9430] [2023-11-23 21:09:16,675 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_8aa0cabe-251c-4332-b3d0-b81978aa1ade/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2023-11-23 21:09:16,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:16,980 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:16,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16 WrapperNode [2023-11-23 21:09:16,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:16,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:16,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:16,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:16,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,414 INFO L138 Inliner]: procedures = 409, calls = 2719, calls flagged for inlining = 209, calls inlined = 190, statements flattened = 6957 [2023-11-23 21:09:17,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:17,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:17,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:17,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:17,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:17,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:17,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:17,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:17,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (1/1) ... [2023-11-23 21:09:17,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:17,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:17,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:17,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_link_speed [2023-11-23 21:09:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_link_speed [2023-11-23 21:09:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-23 21:09:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-23 21:09:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:09:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:09:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-11-23 21:09:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-11-23 21:09:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_state_machine_work [2023-11-23 21:09:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_state_machine_work [2023-11-23 21:09:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2023-11-23 21:09:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2023-11-23 21:09:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:09:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:09:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:09:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:09:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2023-11-23 21:09:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2023-11-23 21:09:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:09:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:09:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure ql_this_adapter_controls_port [2023-11-23 21:09:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_this_adapter_controls_port [2023-11-23 21:09:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2023-11-23 21:09:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2023-11-23 21:09:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_interrupts [2023-11-23 21:09:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_interrupts [2023-11-23 21:09:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:09:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:09:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 21:09:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 21:09:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg_l [2023-11-23 21:09:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg_l [2023-11-23 21:09:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_send_free_list [2023-11-23 21:09:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_send_free_list [2023-11-23 21:09:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-23 21:09:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-23 21:09:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-23 21:09:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-23 21:09:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:09:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:09:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2023-11-23 21:09:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2023-11-23 21:09:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_set_mac_address [2023-11-23 21:09:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_set_mac_address [2023-11-23 21:09:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cycle_adapter [2023-11-23 21:09:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cycle_adapter [2023-11-23 21:09:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mac_cfg_soft_reset [2023-11-23 21:09:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mac_cfg_soft_reset [2023-11-23 21:09:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:09:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:09:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-23 21:09:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-23 21:09:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 21:09:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 21:09:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_disable_scan_mode [2023-11-23 21:09:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_disable_scan_mode [2023-11-23 21:09:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:09:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:09:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 21:09:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 21:09:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:09:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 21:09:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 21:09:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg_l [2023-11-23 21:09:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg_l [2023-11-23 21:09:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2023-11-23 21:09:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2023-11-23 21:09:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2023-11-23 21:09:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2023-11-23 21:09:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:09:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:09:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-23 21:09:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-23 21:09:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2023-11-23 21:09:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2023-11-23 21:09:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:09:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:09:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:09:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:09:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:09:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:09:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_5 [2023-11-23 21:09:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_5 [2023-11-23 21:09:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page1_reg [2023-11-23 21:09:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page1_reg [2023-11-23 21:09:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:09:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:09:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:09:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:09:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:09:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:09:17,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:09:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2023-11-23 21:09:17,916 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2023-11-23 21:09:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-11-23 21:09:17,916 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-11-23 21:09:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_register_page [2023-11-23 21:09:17,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_register_page [2023-11-23 21:09:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:09:17,917 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:09:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg_ex [2023-11-23 21:09:17,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg_ex [2023-11-23 21:09:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure ql_phy_init_ex [2023-11-23 21:09:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_phy_init_ex [2023-11-23 21:09:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:09:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:09:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg_l [2023-11-23 21:09:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg_l [2023-11-23 21:09:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg [2023-11-23 21:09:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg [2023-11-23 21:09:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:09:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2023-11-23 21:09:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2023-11-23 21:09:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page2_reg [2023-11-23 21:09:17,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page2_reg [2023-11-23 21:09:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_5 [2023-11-23 21:09:17,920 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_5 [2023-11-23 21:09:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg [2023-11-23 21:09:17,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg [2023-11-23 21:09:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:09:17,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:09:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:09:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg [2023-11-23 21:09:17,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg [2023-11-23 21:09:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2023-11-23 21:09:17,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2023-11-23 21:09:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_printk [2023-11-23 21:09:17,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_printk [2023-11-23 21:09:17,922 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-23 21:09:17,923 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-23 21:09:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_nvram_reg [2023-11-23 21:09:17,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_nvram_reg [2023-11-23 21:09:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-23 21:09:17,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-23 21:09:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2023-11-23 21:09:17,924 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2023-11-23 21:09:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_drvr_lock [2023-11-23 21:09:17,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_drvr_lock [2023-11-23 21:09:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-23 21:09:17,924 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-23 21:09:17,924 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_enable_scan_mode [2023-11-23 21:09:17,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_enable_scan_mode [2023-11-23 21:09:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-11-23 21:09:17,925 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-11-23 21:09:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_timeout_work [2023-11-23 21:09:17,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_timeout_work [2023-11-23 21:09:17,925 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 21:09:17,926 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 21:09:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:09:17,926 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:09:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:17,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:17,926 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_mii_ready [2023-11-23 21:09:17,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_mii_ready [2023-11-23 21:09:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:09:17,927 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:09:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_large_buffers [2023-11-23 21:09:17,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_large_buffers [2023-11-23 21:09:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:09:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:09:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:09:17,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:09:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-23 21:09:17,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-23 21:09:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-23 21:09:17,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-23 21:09:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2023-11-23 21:09:17,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2023-11-23 21:09:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-23 21:09:17,930 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-23 21:09:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2023-11-23 21:09:17,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2023-11-23 21:09:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg [2023-11-23 21:09:17,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg [2023-11-23 21:09:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:09:17,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:09:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-11-23 21:09:17,931 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-11-23 21:09:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-23 21:09:17,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-23 21:09:17,931 INFO L130 BoogieDeclarations]: Found specification of procedure PHY_Setup [2023-11-23 21:09:17,932 INFO L138 BoogieDeclarations]: Found implementation of procedure PHY_Setup [2023-11-23 21:09:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:09:17,932 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:09:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_buffer_queues [2023-11-23 21:09:17,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_buffer_queues [2023-11-23 21:09:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:09:17,933 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:09:17,933 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:09:17,933 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:09:17,933 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-23 21:09:17,933 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-23 21:09:17,933 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2023-11-23 21:09:17,934 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2023-11-23 21:09:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:09:17,934 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:09:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:09:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:09:17,934 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:09:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:09:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 21:09:17,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 21:09:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2023-11-23 21:09:17,935 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2023-11-23 21:09:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:09:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2023-11-23 21:09:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2023-11-23 21:09:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:09:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:09:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-23 21:09:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-23 21:09:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2023-11-23 21:09:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2023-11-23 21:09:17,937 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:09:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:09:17,937 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-23 21:09:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-23 21:09:17,937 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page0_reg [2023-11-23 21:09:17,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page0_reg [2023-11-23 21:09:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-23 21:09:17,938 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-23 21:09:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_link_full_dup [2023-11-23 21:09:17,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_link_full_dup [2023-11-23 21:09:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure ql_reset_work [2023-11-23 21:09:17,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_reset_work [2023-11-23 21:09:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:09:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:09:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_tx_timeout [2023-11-23 21:09:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_tx_timeout [2023-11-23 21:09:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure ql_supported_modes [2023-11-23 21:09:17,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_supported_modes [2023-11-23 21:09:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2023-11-23 21:09:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2023-11-23 21:09:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:09:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:09:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_fiber [2023-11-23 21:09:17,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_fiber [2023-11-23 21:09:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2023-11-23 21:09:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2023-11-23 21:09:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:09:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:09:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_net_req_rsp_queues [2023-11-23 21:09:17,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_net_req_rsp_queues [2023-11-23 21:09:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:09:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-11-23 21:09:17,942 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-11-23 21:09:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:09:17,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:09:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg_ex [2023-11-23 21:09:17,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg_ex [2023-11-23 21:09:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2023-11-23 21:09:17,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2023-11-23 21:09:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:09:17,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:09:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure ql_port_start [2023-11-23 21:09:17,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_port_start [2023-11-23 21:09:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-23 21:09:17,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-23 21:09:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2023-11-23 21:09:17,944 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2023-11-23 21:09:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_auto_cfg_status [2023-11-23 21:09:17,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_auto_cfg_status [2023-11-23 21:09:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg [2023-11-23 21:09:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg [2023-11-23 21:09:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2023-11-23 21:09:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2023-11-23 21:09:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-23 21:09:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-23 21:09:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-11-23 21:09:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-11-23 21:09:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2023-11-23 21:09:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2023-11-23 21:09:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 21:09:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 21:09:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-23 21:09:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:09:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2023-11-23 21:09:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2023-11-23 21:09:18,841 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:18,846 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:19,235 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:09:24,949 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:29,247 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:29,247 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:09:29,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:29 BoogieIcfgContainer [2023-11-23 21:09:29,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:29,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:29,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:29,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:29,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:12" (1/3) ... [2023-11-23 21:09:29,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e74800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:29, skipping insertion in model container [2023-11-23 21:09:29,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:16" (2/3) ... [2023-11-23 21:09:29,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e74800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:29, skipping insertion in model container [2023-11-23 21:09:29,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:29" (3/3) ... [2023-11-23 21:09:29,258 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2023-11-23 21:09:29,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:29,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:09:29,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:29,381 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;@3a3a7939, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:29,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:09:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 2061 states, 1207 states have (on average 1.2808616404308202) internal successors, (1546), 1263 states have internal predecessors, (1546), 722 states have call successors, (722), 131 states have call predecessors, (722), 130 states have return successors, (712), 699 states have call predecessors, (712), 712 states have call successors, (712) [2023-11-23 21:09:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 21:09:29,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:29,443 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:29,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:29,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2136679663, now seen corresponding path program 1 times [2023-11-23 21:09:29,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:29,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100829270] [2023-11-23 21:09:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:29,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:30,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:09:30,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139325964] [2023-11-23 21:09:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:30,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:30,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:30,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:30,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:09:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:31,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:31,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-23 21:09:31,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:31,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:31,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100829270] [2023-11-23 21:09:31,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:09:31,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139325964] [2023-11-23 21:09:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139325964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:31,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:31,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:31,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471216108] [2023-11-23 21:09:31,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:31,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:31,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:31,811 INFO L87 Difference]: Start difference. First operand has 2061 states, 1207 states have (on average 1.2808616404308202) internal successors, (1546), 1263 states have internal predecessors, (1546), 722 states have call successors, (722), 131 states have call predecessors, (722), 130 states have return successors, (712), 699 states have call predecessors, (712), 712 states have call successors, (712) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:09:35,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:35,848 INFO L93 Difference]: Finished difference Result 5859 states and 8519 transitions. [2023-11-23 21:09:35,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:35,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2023-11-23 21:09:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:35,902 INFO L225 Difference]: With dead ends: 5859 [2023-11-23 21:09:35,903 INFO L226 Difference]: Without dead ends: 3784 [2023-11-23 21:09:35,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:35,926 INFO L413 NwaCegarLoop]: 2640 mSDtfsCounter, 2616 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2616 SdHoareTripleChecker+Valid, 5162 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:35,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2616 Valid, 5162 Invalid, 712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-23 21:09:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2023-11-23 21:09:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3778. [2023-11-23 21:09:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 2230 states have (on average 1.2681614349775785) internal successors, (2828), 2316 states have internal predecessors, (2828), 1306 states have call successors, (1306), 242 states have call predecessors, (1306), 241 states have return successors, (1305), 1276 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-11-23 21:09:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 5439 transitions. [2023-11-23 21:09:36,326 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 5439 transitions. Word has length 168 [2023-11-23 21:09:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:36,329 INFO L495 AbstractCegarLoop]: Abstraction has 3778 states and 5439 transitions. [2023-11-23 21:09:36,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:09:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 5439 transitions. [2023-11-23 21:09:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-23 21:09:36,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:36,361 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:36,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:36,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:09:36,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:36,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash 344098991, now seen corresponding path program 1 times [2023-11-23 21:09:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:36,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187673469] [2023-11-23 21:09:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:37,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:37,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187673469] [2023-11-23 21:09:37,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:09:37,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399742296] [2023-11-23 21:09:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:37,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:37,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:37,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:37,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:09:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:38,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 4473 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:38,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-23 21:09:38,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:38,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399742296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:38,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:38,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078766435] [2023-11-23 21:09:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:38,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:38,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:38,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:38,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:38,865 INFO L87 Difference]: Start difference. First operand 3778 states and 5439 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-23 21:09:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:42,358 INFO L93 Difference]: Finished difference Result 7561 states and 10897 transitions. [2023-11-23 21:09:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:42,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 336 [2023-11-23 21:09:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:42,400 INFO L225 Difference]: With dead ends: 7561 [2023-11-23 21:09:42,400 INFO L226 Difference]: Without dead ends: 3804 [2023-11-23 21:09:42,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:42,426 INFO L413 NwaCegarLoop]: 2623 mSDtfsCounter, 10 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:42,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5243 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 21:09:42,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2023-11-23 21:09:42,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 3780. [2023-11-23 21:09:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 2232 states have (on average 1.267921146953405) internal successors, (2830), 2318 states have internal predecessors, (2830), 1306 states have call successors, (1306), 242 states have call predecessors, (1306), 241 states have return successors, (1305), 1276 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-11-23 21:09:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5441 transitions. [2023-11-23 21:09:42,663 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5441 transitions. Word has length 336 [2023-11-23 21:09:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:42,666 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 5441 transitions. [2023-11-23 21:09:42,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-23 21:09:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5441 transitions. [2023-11-23 21:09:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-23 21:09:42,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:42,684 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:42,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:09:42,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:42,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:42,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:42,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1225071916, now seen corresponding path program 1 times [2023-11-23 21:09:42,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:42,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960218614] [2023-11-23 21:09:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:43,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960218614] [2023-11-23 21:09:43,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:09:43,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682831458] [2023-11-23 21:09:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:43,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:43,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:43,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:43,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:09:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:44,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 4488 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:09:45,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 21:09:45,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:45,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682831458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:45,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:45,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:45,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941412922] [2023-11-23 21:09:45,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:45,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:45,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:45,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:45,109 INFO L87 Difference]: Start difference. First operand 3780 states and 5441 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-23 21:09:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:48,687 INFO L93 Difference]: Finished difference Result 7545 states and 10904 transitions. [2023-11-23 21:09:48,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:48,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 340 [2023-11-23 21:09:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:48,740 INFO L225 Difference]: With dead ends: 7545 [2023-11-23 21:09:48,740 INFO L226 Difference]: Without dead ends: 3786 [2023-11-23 21:09:48,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:48,777 INFO L413 NwaCegarLoop]: 2623 mSDtfsCounter, 1 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5245 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:48,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5245 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-23 21:09:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2023-11-23 21:09:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3782. [2023-11-23 21:09:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 2234 states have (on average 1.2676812891674127) internal successors, (2832), 2320 states have internal predecessors, (2832), 1306 states have call successors, (1306), 242 states have call predecessors, (1306), 241 states have return successors, (1305), 1276 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-11-23 21:09:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5443 transitions. [2023-11-23 21:09:49,070 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5443 transitions. Word has length 340 [2023-11-23 21:09:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:49,072 INFO L495 AbstractCegarLoop]: Abstraction has 3782 states and 5443 transitions. [2023-11-23 21:09:49,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-11-23 21:09:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5443 transitions. [2023-11-23 21:09:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-11-23 21:09:49,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:49,092 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:09:49,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 21:09:49,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:49,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:49,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash 573565003, now seen corresponding path program 1 times [2023-11-23 21:09:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:49,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267292553] [2023-11-23 21:09:49,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:49,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:49,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:49,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267292553] [2023-11-23 21:09:49,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:09:49,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313689165] [2023-11-23 21:09:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:49,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:09:49,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:49,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:09:49,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8aa0cabe-251c-4332-b3d0-b81978aa1ade/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:09:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:51,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 4206 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:09:51,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:09:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-23 21:09:51,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:09:51,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313689165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:51,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:51,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:09:51,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444147934] [2023-11-23 21:09:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:51,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:09:51,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:51,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:09:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:09:51,539 INFO L87 Difference]: Start difference. First operand 3782 states and 5443 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 5 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 4 states have call predecessors, (43), 5 states have call successors, (43)