./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-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/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_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/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_8d44672f-f1de-4824-8ce2-72295ad85c84/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 bbef461d577533a33a47975bed502a034d4de7bb4c9545318a29cb7eaac175ad --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:20:11,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:20:11,184 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:20:11,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:20:11,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:20:11,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:20:11,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:20:11,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:20:11,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:20:11,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:20:11,250 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:20:11,251 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:20:11,252 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:20:11,252 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:20:11,253 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:20:11,254 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:20:11,254 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:20:11,255 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:20:11,256 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:20:11,256 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:20:11,257 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:20:11,258 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:20:11,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:20:11,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:20:11,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:20:11,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:20:11,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:20:11,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:20:11,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:20:11,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:20:11,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:20:11,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:20:11,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:20:11,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:20:11,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:11,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:20:11,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:20:11,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:20:11,283 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:20:11,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:20:11,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:20:11,284 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:20:11,284 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:20:11,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:20:11,285 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_8d44672f-f1de-4824-8ce2-72295ad85c84/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbef461d577533a33a47975bed502a034d4de7bb4c9545318a29cb7eaac175ad [2023-11-23 21:20:11,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:20:11,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:20:11,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:20:11,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:20:11,692 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:20:11,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-11-23 21:20:14,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:20:15,563 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:20:15,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-11-23 21:20:15,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/data/7d323b316/03afb76ca2904a4bb6a0736d6d03b85f/FLAG26dbcdbd8 [2023-11-23 21:20:15,630 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/data/7d323b316/03afb76ca2904a4bb6a0736d6d03b85f [2023-11-23 21:20:15,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:20:15,634 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:20:15,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:15,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:20:15,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:20:15,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:15" (1/1) ... [2023-11-23 21:20:15,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a852419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:15, skipping insertion in model container [2023-11-23 21:20:15,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:15" (1/1) ... [2023-11-23 21:20:15,853 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:20:18,471 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_8d44672f-f1de-4824-8ce2-72295ad85c84/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[283009,283022] [2023-11-23 21:20:18,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:18,666 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:20:18,775 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"); [3811] [2023-11-23 21:20:18,777 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)); [3818] [2023-11-23 21:20:18,778 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"); [3826-3827] [2023-11-23 21:20:18,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3841-3842] [2023-11-23 21:20:18,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsfl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3850] [2023-11-23 21:20:18,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; subl %2, %0; sete %1": "+m" (v->counter), "=qm" (c): "er" (i): "memory"); [3950-3951] [2023-11-23 21:20:18,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [3962-3963] [2023-11-23 21:20:18,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3966-3967] [2023-11-23 21:20:18,787 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3970-3971] [2023-11-23 21:20:18,787 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3974-3975] [2023-11-23 21:20:18,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4185] [2023-11-23 21:20:18,795 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4192] [2023-11-23 21:20:18,871 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9075/dscv_tempdir/dscv/ri/32_7a/drivers/usb/host/oxu210hp-hcd.c"), "i" (398), "i" (12UL)); [4741-4742] [2023-11-23 21:20:18,887 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9075/dscv_tempdir/dscv/ri/32_7a/drivers/usb/host/oxu210hp-hcd.c"), "i" (626), "i" (12UL)); [5026-5027] [2023-11-23 21:20:18,906 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9075/dscv_tempdir/dscv/ri/32_7a/drivers/usb/host/oxu210hp-hcd.c"), "i" (824), "i" (12UL)); [5323-5324] [2023-11-23 21:20:18,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5344] [2023-11-23 21:20:18,922 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [5563] [2023-11-23 21:20:18,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5614] [2023-11-23 21:20:18,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6048] [2023-11-23 21:20:18,963 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6106] [2023-11-23 21:20:18,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6121] [2023-11-23 21:20:18,979 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9075/dscv_tempdir/dscv/ri/32_7a/drivers/usb/host/oxu210hp-hcd.c"), "i" (1711), "i" (12UL)); [6248-6249] [2023-11-23 21:20:18,982 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9075/dscv_tempdir/dscv/ri/32_7a/drivers/usb/host/oxu210hp-hcd.c"), "i" (1714), "i" (12UL)); [6255-6256] [2023-11-23 21:20:18,983 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6266] [2023-11-23 21:20:18,987 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6287] [2023-11-23 21:20:19,045 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6577] [2023-11-23 21:20:19,054 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6668] [2023-11-23 21:20:19,060 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9075/dscv_tempdir/dscv/ri/32_7a/drivers/usb/host/oxu210hp-hcd.c"), "i" (2227), "i" (12UL)); [6886-6887] [2023-11-23 21:20:19,189 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_8d44672f-f1de-4824-8ce2-72295ad85c84/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[283009,283022] [2023-11-23 21:20:19,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:19,310 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:20:19,310 WARN L675 CHandler]: The function __bad_unaligned_access_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:20:19,318 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:20:19,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19 WrapperNode [2023-11-23 21:20:19,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:19,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:19,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:20:19,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:20:19,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,776 INFO L138 Inliner]: procedures = 307, calls = 3111, calls flagged for inlining = 108, calls inlined = 104, statements flattened = 8215 [2023-11-23 21:20:19,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:19,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:20:19,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:20:19,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:20:19,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:19,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:20,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:20,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:20,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:20,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:20,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:20:20,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:20:20,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:20:20,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:20:20,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (1/1) ... [2023-11-23 21:20:20,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:20,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:20,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:20:20,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d44672f-f1de-4824-8ce2-72295ad85c84/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:20:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_reset [2023-11-23 21:20:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_reset [2023-11-23 21:20:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2023-11-23 21:20:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2023-11-23 21:20:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2023-11-23 21:20:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2023-11-23 21:20:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:20:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:20:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-23 21:20:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-23 21:20:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:20:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:20:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:20:20,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:20:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure scan_periodic [2023-11-23 21:20:20,374 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_periodic [2023-11-23 21:20:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:20:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:20:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-11-23 21:20:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-11-23 21:20:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:20:20,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:20:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_create [2023-11-23 21:20:20,376 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_create [2023-11-23 21:20:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_readl [2023-11-23 21:20:20,376 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_readl [2023-11-23 21:20:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_run [2023-11-23 21:20:20,376 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_run [2023-11-23 21:20:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:20:20,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:20:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2023-11-23 21:20:20,377 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2023-11-23 21:20:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure qh_put [2023-11-23 21:20:20,377 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_put [2023-11-23 21:20:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_irq [2023-11-23 21:20:20,378 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_irq [2023-11-23 21:20:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:20:20,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:20:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure scan_async [2023-11-23 21:20:20,378 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_async [2023-11-23 21:20:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2023-11-23 21:20:20,379 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2023-11-23 21:20:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:20:20,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:20:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_halt [2023-11-23 21:20:20,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_halt [2023-11-23 21:20:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_endpoint_disable [2023-11-23 21:20:20,380 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_endpoint_disable [2023-11-23 21:20:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2023-11-23 21:20:20,380 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2023-11-23 21:20:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:20:20,381 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:20:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-23 21:20:20,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-23 21:20:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-23 21:20:20,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-23 21:20:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_qtd_free [2023-11-23 21:20:20,382 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_qtd_free [2023-11-23 21:20:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:20:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:20:20,382 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:20:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2023-11-23 21:20:20,383 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2023-11-23 21:20:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:20:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2023-11-23 21:20:20,445 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2023-11-23 21:20:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-23 21:20:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:20:20,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:20:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_writel [2023-11-23 21:20:20,445 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_writel [2023-11-23 21:20:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:20:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:20:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_shutdown [2023-11-23 21:20:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_shutdown [2023-11-23 21:20:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2023-11-23 21:20:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2023-11-23 21:20:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_murb_alloc [2023-11-23 21:20:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_murb_alloc [2023-11-23 21:20:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:20:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:20:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2023-11-23 21:20:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2023-11-23 21:20:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_urb_enqueue [2023-11-23 21:20:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_urb_enqueue [2023-11-23 21:20:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2023-11-23 21:20:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2023-11-23 21:20:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2023-11-23 21:20:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2023-11-23 21:20:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure intr_deschedule [2023-11-23 21:20:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_deschedule [2023-11-23 21:20:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:20:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:20:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_buf_alloc [2023-11-23 21:20:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_buf_alloc [2023-11-23 21:20:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 21:20:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 21:20:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 21:20:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 21:20:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_hub_control [2023-11-23 21:20:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_hub_control [2023-11-23 21:20:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2023-11-23 21:20:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2023-11-23 21:20:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2023-11-23 21:20:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:20:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:20:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2023-11-23 21:20:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2023-11-23 21:20:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-23 21:20:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-23 21:20:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:20:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_probe [2023-11-23 21:20:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_probe [2023-11-23 21:20:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:20:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:20:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure timer_action [2023-11-23 21:20:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_action [2023-11-23 21:20:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-23 21:20:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-23 21:20:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:20:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_get_frame [2023-11-23 21:20:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_get_frame [2023-11-23 21:20:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:20:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:20:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_stop [2023-11-23 21:20:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_stop [2023-11-23 21:20:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-11-23 21:20:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-11-23 21:20:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:20:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-23 21:20:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-23 21:20:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:20:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:20:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2023-11-23 21:20:20,453 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2023-11-23 21:20:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2023-11-23 21:20:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2023-11-23 21:20:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure __oxu_urb_enqueue [2023-11-23 21:20:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __oxu_urb_enqueue [2023-11-23 21:20:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_remove [2023-11-23 21:20:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_remove [2023-11-23 21:20:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-23 21:20:20,454 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-23 21:20:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:20:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:20:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-23 21:20:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-23 21:20:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:20:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:20:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:20:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-23 21:20:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-23 21:20:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 21:20:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 21:20:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:20:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:20:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_work [2023-11-23 21:20:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_work [2023-11-23 21:20:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure qh_unlink_periodic [2023-11-23 21:20:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_unlink_periodic [2023-11-23 21:20:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:20:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:20:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2023-11-23 21:20:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2023-11-23 21:20:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:20:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-23 21:20:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-23 21:20:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_async [2023-11-23 21:20:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_async [2023-11-23 21:20:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_mem_cleanup [2023-11-23 21:20:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_mem_cleanup [2023-11-23 21:20:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_to_hcd [2023-11-23 21:20:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_to_hcd [2023-11-23 21:20:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:20:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:20:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-23 21:20:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-23 21:20:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:20:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_qh_alloc [2023-11-23 21:20:20,458 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_qh_alloc [2023-11-23 21:20:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_bus_suspend [2023-11-23 21:20:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_bus_suspend [2023-11-23 21:20:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2023-11-23 21:20:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2023-11-23 21:20:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2023-11-23 21:20:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2023-11-23 21:20:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:20:20,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:20:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2023-11-23 21:20:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2023-11-23 21:20:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:20:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_hub_status_data [2023-11-23 21:20:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_hub_status_data [2023-11-23 21:20:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_shutdown [2023-11-23 21:20:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_shutdown [2023-11-23 21:20:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2023-11-23 21:20:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2023-11-23 21:20:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:20:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:20:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure qh_get [2023-11-23 21:20:20,464 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_get [2023-11-23 21:20:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 21:20:20,464 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 21:20:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_quiesce [2023-11-23 21:20:20,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_quiesce [2023-11-23 21:20:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-11-23 21:20:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-11-23 21:20:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure timer_action_done [2023-11-23 21:20:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_action_done [2023-11-23 21:20:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-23 21:20:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-23 21:20:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 21:20:20,466 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 21:20:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure device_may_wakeup [2023-11-23 21:20:20,466 INFO L138 BoogieDeclarations]: Found implementation of procedure device_may_wakeup [2023-11-23 21:20:20,466 INFO L130 BoogieDeclarations]: Found specification of procedure usb_remove_hcd [2023-11-23 21:20:20,466 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_remove_hcd [2023-11-23 21:20:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_murb_free [2023-11-23 21:20:20,467 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_murb_free [2023-11-23 21:20:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_urb_done [2023-11-23 21:20:20,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_urb_done [2023-11-23 21:20:20,467 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2023-11-23 21:20:20,467 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2023-11-23 21:20:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2023-11-23 21:20:20,468 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2023-11-23 21:20:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-23 21:20:20,468 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-23 21:20:20,468 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2023-11-23 21:20:20,468 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2023-11-23 21:20:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:20:20,469 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:20:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2023-11-23 21:20:20,469 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2023-11-23 21:20:20,469 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 21:20:20,469 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 21:20:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_bus_resume [2023-11-23 21:20:20,470 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_bus_resume [2023-11-23 21:20:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_urb_dequeue [2023-11-23 21:20:20,470 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_urb_dequeue [2023-11-23 21:20:20,470 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:20:20,470 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:20:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-23 21:20:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-23 21:20:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 21:20:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 21:20:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 21:20:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 21:20:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2023-11-23 21:20:20,472 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2023-11-23 21:20:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_remove [2023-11-23 21:20:20,472 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_remove [2023-11-23 21:20:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:20:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_qtd_alloc [2023-11-23 21:20:20,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_qtd_alloc [2023-11-23 21:20:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_oxu [2023-11-23 21:20:20,473 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_oxu [2023-11-23 21:20:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_reset [2023-11-23 21:20:20,473 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_reset [2023-11-23 21:20:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:20:20,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:20:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:20:20,474 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:20:21,514 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:20:21,519 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:20:22,333 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:20:31,763 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:20:38,346 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:20:38,347 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:20:38,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:38 BoogieIcfgContainer [2023-11-23 21:20:38,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:20:38,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:20:38,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:20:38,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:20:38,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:20:15" (1/3) ... [2023-11-23 21:20:38,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cf4392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:38, skipping insertion in model container [2023-11-23 21:20:38,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:19" (2/3) ... [2023-11-23 21:20:38,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64cf4392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:38, skipping insertion in model container [2023-11-23 21:20:38,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:38" (3/3) ... [2023-11-23 21:20:38,365 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-11-23 21:20:38,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:20:38,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:20:38,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:20:38,489 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;@3f02d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:20:38,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:20:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 2343 states, 1453 states have (on average 1.3434273916035788) internal successors, (1952), 1521 states have internal predecessors, (1952), 767 states have call successors, (767), 122 states have call predecessors, (767), 121 states have return successors, (761), 751 states have call predecessors, (761), 761 states have call successors, (761) [2023-11-23 21:20:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-23 21:20:38,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:38,527 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:38,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:38,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 786675405, now seen corresponding path program 1 times [2023-11-23 21:20:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:38,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496679424] [2023-11-23 21:20:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-23 21:20:39,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496679424] [2023-11-23 21:20:39,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496679424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:39,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:39,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:39,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529697522] [2023-11-23 21:20:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:39,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:39,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:39,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:40,002 INFO L87 Difference]: Start difference. First operand has 2343 states, 1453 states have (on average 1.3434273916035788) internal successors, (1952), 1521 states have internal predecessors, (1952), 767 states have call successors, (767), 122 states have call predecessors, (767), 121 states have return successors, (761), 751 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 21:20:42,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:46,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:50,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:52,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:20:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:53,146 INFO L93 Difference]: Finished difference Result 6923 states and 10289 transitions. [2023-11-23 21:20:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:53,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 192 [2023-11-23 21:20:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:53,214 INFO L225 Difference]: With dead ends: 6923 [2023-11-23 21:20:53,215 INFO L226 Difference]: Without dead ends: 4579 [2023-11-23 21:20:53,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:53,242 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 3382 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 6261 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:53,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3382 Valid, 6261 Invalid, 701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 694 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2023-11-23 21:20:53,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2023-11-23 21:20:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 4579. [2023-11-23 21:20:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4579 states, 2850 states have (on average 1.3375438596491227) internal successors, (3812), 2968 states have internal predecessors, (3812), 1489 states have call successors, (1489), 240 states have call predecessors, (1489), 239 states have return successors, (1486), 1466 states have call predecessors, (1486), 1486 states have call successors, (1486) [2023-11-23 21:20:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6787 transitions. [2023-11-23 21:20:53,717 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6787 transitions. Word has length 192 [2023-11-23 21:20:53,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:53,722 INFO L495 AbstractCegarLoop]: Abstraction has 4579 states and 6787 transitions. [2023-11-23 21:20:53,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 21:20:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6787 transitions. [2023-11-23 21:20:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-23 21:20:53,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:53,740 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:20:53,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:53,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:53,741 INFO L85 PathProgramCache]: Analyzing trace with hash 821956383, now seen corresponding path program 1 times [2023-11-23 21:20:53,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:53,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599838499] [2023-11-23 21:20:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:53,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-11-23 21:20:54,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599838499] [2023-11-23 21:20:54,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599838499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:54,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:54,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:54,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796848242] [2023-11-23 21:20:54,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:54,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:54,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:54,547 INFO L87 Difference]: Start difference. First operand 4579 states and 6787 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:20:56,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []