./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--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_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/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_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/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--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/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_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/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 2f349249e9e86997fa8ff3fec7fb7aa332cbfd0034f841eea19465e389dd90de --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:48,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:48,566 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:33:48,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:48,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:48,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:48,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:48,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:48,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:48,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:48,634 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:48,635 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:48,636 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:48,638 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:33:48,638 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:48,639 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:48,639 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:33:48,640 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:33:48,640 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:48,641 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:33:48,641 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:33:48,642 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:33:48,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:48,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:33:48,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:33:48,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:48,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:33:48,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:48,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:33:48,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:33:48,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:48,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:48,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:48,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:48,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:48,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:48,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:48,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:33:48,650 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:33:48,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:33:48,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:48,651 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:33:48,652 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:48,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:48,653 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_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f349249e9e86997fa8ff3fec7fb7aa332cbfd0034f841eea19465e389dd90de [2023-11-23 20:33:49,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:49,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:49,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:49,074 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:49,075 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:49,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-11-23 20:33:52,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:52,977 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:52,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-11-23 20:33:53,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/data/195470ee7/fb92dcc258d5484e8e2a01f68f302a77/FLAGaf90fe76d [2023-11-23 20:33:53,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/data/195470ee7/fb92dcc258d5484e8e2a01f68f302a77 [2023-11-23 20:33:53,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:53,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:53,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:53,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:53,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:53,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:53" (1/1) ... [2023-11-23 20:33:53,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb9f42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:53, skipping insertion in model container [2023-11-23 20:33:53,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:53" (1/1) ... [2023-11-23 20:33:53,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:55,866 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_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[281346,281359] [2023-11-23 20:33:55,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:55,946 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:56,051 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"); [3818] [2023-11-23 20:33:56,054 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)); [3825] [2023-11-23 20:33:56,054 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"); [3833-3834] [2023-11-23 20:33:56,057 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)); [3848-3849] [2023-11-23 20:33:56,057 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsfl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3857] [2023-11-23 20:33:56,075 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"); [4054-4055] [2023-11-23 20:33:56,078 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"); [4066-4067] [2023-11-23 20:33:56,079 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"); [4070-4071] [2023-11-23 20:33:56,080 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"); [4074-4075] [2023-11-23 20:33:56,080 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"); [4078-4079] [2023-11-23 20:33:56,084 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4183] [2023-11-23 20:33:56,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4190] [2023-11-23 20:33:56,145 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (398), "i" (12UL)); [4715-4716] [2023-11-23 20:33:56,166 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (626), "i" (12UL)); [5000-5001] [2023-11-23 20:33:56,183 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (824), "i" (12UL)); [5297-5298] [2023-11-23 20:33:56,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5318] [2023-11-23 20:33:56,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [5537] [2023-11-23 20:33:56,202 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5588] [2023-11-23 20:33:56,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6022] [2023-11-23 20:33:56,241 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6080] [2023-11-23 20:33:56,243 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6095] [2023-11-23 20:33:56,318 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (1711), "i" (12UL)); [6220-6221] [2023-11-23 20:33:56,321 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (1714), "i" (12UL)); [6227-6228] [2023-11-23 20:33:56,323 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6238] [2023-11-23 20:33:56,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6259] [2023-11-23 20:33:56,349 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6549] [2023-11-23 20:33:56,358 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [6640] [2023-11-23 20:33:56,377 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/9566/dscv_tempdir/dscv/ri/43_2a/drivers/usb/host/oxu210hp-hcd.c"), "i" (2227), "i" (12UL)); [6856-6857] [2023-11-23 20:33:56,570 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_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[281346,281359] [2023-11-23 20:33:56,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:56,670 WARN L675 CHandler]: The function ldv_calloc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:56,670 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:56,670 WARN L675 CHandler]: The function __bad_unaligned_access_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:56,678 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:56,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56 WrapperNode [2023-11-23 20:33:56,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:56,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:56,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:56,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:56,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:56,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,113 INFO L138 Inliner]: procedures = 272, calls = 3049, calls flagged for inlining = 111, calls inlined = 108, statements flattened = 8190 [2023-11-23 20:33:57,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:57,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:57,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:57,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:57,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:57,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:57,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:57,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:57,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (1/1) ... [2023-11-23 20:33:57,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:57,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:57,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:57,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64cf177-97ee-4d73-ad8e-e118fb6e7d2a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_reset [2023-11-23 20:33:57,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_reset [2023-11-23 20:33:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2023-11-23 20:33:57,714 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2023-11-23 20:33:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_status_buf [2023-11-23 20:33:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_status_buf [2023-11-23 20:33:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 20:33:57,716 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 20:33:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-23 20:33:57,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-23 20:33:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:33:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:33:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:33:57,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:33:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure scan_periodic [2023-11-23 20:33:57,717 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_periodic [2023-11-23 20:33:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:33:57,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:33:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2023-11-23 20:33:57,718 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2023-11-23 20:33:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 20:33:57,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 20:33:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:33:57,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:33:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_create [2023-11-23 20:33:57,719 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_create [2023-11-23 20:33:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_readl [2023-11-23 20:33:57,720 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_readl [2023-11-23 20:33:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_run [2023-11-23 20:33:57,720 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_run [2023-11-23 20:33:57,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:33:57,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:33:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_next_shadow [2023-11-23 20:33:57,722 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_next_shadow [2023-11-23 20:33:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure qh_put [2023-11-23 20:33:57,723 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_put [2023-11-23 20:33:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_irq [2023-11-23 20:33:57,723 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_irq [2023-11-23 20:33:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:33:57,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:33:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure scan_async [2023-11-23 20:33:57,724 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_async [2023-11-23 20:33:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2023-11-23 20:33:57,725 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2023-11-23 20:33:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:33:57,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:33:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_halt [2023-11-23 20:33:57,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_halt [2023-11-23 20:33:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_endpoint_disable [2023-11-23 20:33:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_endpoint_disable [2023-11-23 20:33:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2023-11-23 20:33:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2023-11-23 20:33:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:33:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:33:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-23 20:33:57,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-23 20:33:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-23 20:33:57,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-23 20:33:57,728 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_qtd_free [2023-11-23 20:33:57,729 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_qtd_free [2023-11-23 20:33:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:33:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 20:33:57,729 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 20:33:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_list_free [2023-11-23 20:33:57,730 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_list_free [2023-11-23 20:33:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:33:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure qtd_fill [2023-11-23 20:33:57,730 INFO L138 BoogieDeclarations]: Found implementation of procedure qtd_fill [2023-11-23 20:33:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-23 20:33:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 20:33:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 20:33:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 20:33:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 20:33:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_writel [2023-11-23 20:33:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_writel [2023-11-23 20:33:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:33:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:33:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_shutdown [2023-11-23 20:33:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_shutdown [2023-11-23 20:33:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2023-11-23 20:33:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2023-11-23 20:33:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_murb_alloc [2023-11-23 20:33:57,734 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_murb_alloc [2023-11-23 20:33:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:33:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:33:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure dbg_command_buf [2023-11-23 20:33:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dbg_command_buf [2023-11-23 20:33:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_urb_enqueue [2023-11-23 20:33:57,735 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_urb_enqueue [2023-11-23 20:33:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2023-11-23 20:33:57,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2023-11-23 20:33:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_usecs [2023-11-23 20:33:57,736 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_usecs [2023-11-23 20:33:57,736 INFO L130 BoogieDeclarations]: Found specification of procedure intr_deschedule [2023-11-23 20:33:57,736 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_deschedule [2023-11-23 20:33:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:33:57,737 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:33:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_buf_alloc [2023-11-23 20:33:57,737 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_buf_alloc [2023-11-23 20:33:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 20:33:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 20:33:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_hub_control [2023-11-23 20:33:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_hub_control [2023-11-23 20:33:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2023-11-23 20:33:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2023-11-23 20:33:57,739 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2023-11-23 20:33:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:33:57,740 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:33:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2023-11-23 20:33:57,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2023-11-23 20:33:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-23 20:33:57,741 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-23 20:33:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:33:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_probe [2023-11-23 20:33:57,742 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_probe [2023-11-23 20:33:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 20:33:57,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 20:33:57,746 INFO L130 BoogieDeclarations]: Found specification of procedure timer_action [2023-11-23 20:33:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_action [2023-11-23 20:33:57,747 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-23 20:33:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-23 20:33:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:33:57,748 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_get_frame [2023-11-23 20:33:57,749 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_get_frame [2023-11-23 20:33:57,750 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 20:33:57,751 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 20:33:57,756 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_stop [2023-11-23 20:33:57,757 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_stop [2023-11-23 20:33:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2023-11-23 20:33:57,757 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2023-11-23 20:33:57,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:33:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-23 20:33:57,758 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-23 20:33:57,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 20:33:57,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 20:33:57,759 INFO L130 BoogieDeclarations]: Found specification of procedure qh_schedule [2023-11-23 20:33:57,759 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_schedule [2023-11-23 20:33:57,759 INFO L130 BoogieDeclarations]: Found specification of procedure check_intr_schedule [2023-11-23 20:33:57,759 INFO L138 BoogieDeclarations]: Found implementation of procedure check_intr_schedule [2023-11-23 20:33:57,759 INFO L130 BoogieDeclarations]: Found specification of procedure __oxu_urb_enqueue [2023-11-23 20:33:57,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __oxu_urb_enqueue [2023-11-23 20:33:57,760 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_drv_remove [2023-11-23 20:33:57,760 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_drv_remove [2023-11-23 20:33:57,760 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-23 20:33:57,760 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-23 20:33:57,760 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:33:57,760 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:33:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-23 20:33:57,761 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-23 20:33:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:33:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 20:33:57,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 20:33:57,761 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 20:33:57,761 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 20:33:57,762 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-23 20:33:57,762 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-23 20:33:57,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:33:57,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:33:57,762 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_work [2023-11-23 20:33:57,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_work [2023-11-23 20:33:57,763 INFO L130 BoogieDeclarations]: Found specification of procedure qh_unlink_periodic [2023-11-23 20:33:57,763 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_unlink_periodic [2023-11-23 20:33:57,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 20:33:57,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 20:33:57,763 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2023-11-23 20:33:57,763 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2023-11-23 20:33:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:33:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-23 20:33:57,764 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-23 20:33:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2023-11-23 20:33:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_async [2023-11-23 20:33:57,764 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_async [2023-11-23 20:33:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_mem_cleanup [2023-11-23 20:33:57,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_mem_cleanup [2023-11-23 20:33:57,765 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_to_hcd [2023-11-23 20:33:57,765 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_to_hcd [2023-11-23 20:33:57,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 20:33:57,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 20:33:57,765 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-23 20:33:57,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-23 20:33:57,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:57,766 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_qh_alloc [2023-11-23 20:33:57,766 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_qh_alloc [2023-11-23 20:33:57,766 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_bus_suspend [2023-11-23 20:33:57,766 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_bus_suspend [2023-11-23 20:33:57,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_calc_bus_time [2023-11-23 20:33:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_calc_bus_time [2023-11-23 20:33:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2023-11-23 20:33:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2023-11-23 20:33:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 20:33:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 20:33:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure qh_link_async [2023-11-23 20:33:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_link_async [2023-11-23 20:33:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:33:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_hub_status_data [2023-11-23 20:33:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_hub_status_data [2023-11-23 20:33:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_shutdown [2023-11-23 20:33:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_shutdown [2023-11-23 20:33:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure qh_urb_transaction [2023-11-23 20:33:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_urb_transaction [2023-11-23 20:33:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:33:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:33:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure qh_get [2023-11-23 20:33:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_get [2023-11-23 20:33:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 20:33:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 20:33:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_quiesce [2023-11-23 20:33:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_quiesce [2023-11-23 20:33:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-11-23 20:33:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-11-23 20:33:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure timer_action_done [2023-11-23 20:33:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_action_done [2023-11-23 20:33:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-23 20:33:57,771 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-23 20:33:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 20:33:57,771 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 20:33:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure device_may_wakeup [2023-11-23 20:33:57,771 INFO L138 BoogieDeclarations]: Found implementation of procedure device_may_wakeup [2023-11-23 20:33:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure usb_remove_hcd [2023-11-23 20:33:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_remove_hcd [2023-11-23 20:33:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_murb_free [2023-11-23 20:33:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_murb_free [2023-11-23 20:33:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_urb_done [2023-11-23 20:33:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_urb_done [2023-11-23 20:33:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2023-11-23 20:33:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2023-11-23 20:33:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure handshake [2023-11-23 20:33:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure handshake [2023-11-23 20:33:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-23 20:33:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-23 20:33:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure qh_refresh [2023-11-23 20:33:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_refresh [2023-11-23 20:33:57,774 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 20:33:57,774 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 20:33:57,774 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2023-11-23 20:33:57,774 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2023-11-23 20:33:57,774 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 20:33:57,774 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 20:33:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_bus_resume [2023-11-23 20:33:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_bus_resume [2023-11-23 20:33:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_urb_dequeue [2023-11-23 20:33:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_urb_dequeue [2023-11-23 20:33:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:33:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:33:57,780 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-23 20:33:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-23 20:33:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 20:33:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 20:33:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 20:33:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 20:33:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure qh_append_tds [2023-11-23 20:33:57,782 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_append_tds [2023-11-23 20:33:57,782 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_remove [2023-11-23 20:33:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_remove [2023-11-23 20:33:57,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:33:57,784 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_qtd_alloc [2023-11-23 20:33:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_qtd_alloc [2023-11-23 20:33:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_oxu [2023-11-23 20:33:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_oxu [2023-11-23 20:33:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_reset [2023-11-23 20:33:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_reset [2023-11-23 20:33:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 20:33:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 20:33:58,911 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:58,924 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:59,693 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:34:10,276 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:16,793 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:16,793 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:34:16,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:16 BoogieIcfgContainer [2023-11-23 20:34:16,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:16,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:16,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:16,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:16,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:53" (1/3) ... [2023-11-23 20:34:16,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6902df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:16, skipping insertion in model container [2023-11-23 20:34:16,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:56" (2/3) ... [2023-11-23 20:34:16,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6902df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:16, skipping insertion in model container [2023-11-23 20:34:16,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:16" (3/3) ... [2023-11-23 20:34:16,811 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2023-11-23 20:34:16,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:16,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:34:16,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:16,989 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;@190878a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:16,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:34:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 2331 states, 1445 states have (on average 1.3432525951557093) internal successors, (1941), 1511 states have internal predecessors, (1941), 762 states have call successors, (762), 123 states have call predecessors, (762), 122 states have return successors, (756), 746 states have call predecessors, (756), 756 states have call successors, (756) [2023-11-23 20:34:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-23 20:34:17,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:17,104 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-23 20:34:17,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:17,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash -937615633, now seen corresponding path program 1 times [2023-11-23 20:34:17,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:17,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941841433] [2023-11-23 20:34:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:17,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-11-23 20:34:18,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:18,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941841433] [2023-11-23 20:34:18,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941841433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:18,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:18,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:34:18,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380845303] [2023-11-23 20:34:18,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:18,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:34:18,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:18,978 INFO L87 Difference]: Start difference. First operand has 2331 states, 1445 states have (on average 1.3432525951557093) internal successors, (1941), 1511 states have internal predecessors, (1941), 762 states have call successors, (762), 123 states have call predecessors, (762), 122 states have return successors, (756), 746 states have call predecessors, (756), 756 states have call successors, (756) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 20:34:21,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:34:24,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:34:29,486 WARN L539 Checker$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 20:34:31,495 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 20:34:32,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:32,034 INFO L93 Difference]: Finished difference Result 6787 states and 10066 transitions. [2023-11-23 20:34:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:32,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 244 [2023-11-23 20:34:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:32,110 INFO L225 Difference]: With dead ends: 6787 [2023-11-23 20:34:32,110 INFO L226 Difference]: Without dead ends: 4454 [2023-11-23 20:34:32,140 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 20:34:32,147 INFO L413 NwaCegarLoop]: 3112 mSDtfsCounter, 3245 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3245 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:32,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3245 Valid, 6067 Invalid, 790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 784 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2023-11-23 20:34:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2023-11-23 20:34:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4450. [2023-11-23 20:34:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 2758 states have (on average 1.3306744017403915) internal successors, (3670), 2875 states have internal predecessors, (3670), 1450 states have call successors, (1450), 242 states have call predecessors, (1450), 241 states have return successors, (1449), 1428 states have call predecessors, (1449), 1449 states have call successors, (1449) [2023-11-23 20:34:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 6569 transitions. [2023-11-23 20:34:32,675 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 6569 transitions. Word has length 244 [2023-11-23 20:34:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:32,678 INFO L495 AbstractCegarLoop]: Abstraction has 4450 states and 6569 transitions. [2023-11-23 20:34:32,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 20:34:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 6569 transitions. [2023-11-23 20:34:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-23 20:34:32,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:32,702 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-23 20:34:32,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:34:32,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:32,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 163574274, now seen corresponding path program 1 times [2023-11-23 20:34:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965863388] [2023-11-23 20:34:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2023-11-23 20:34:33,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965863388] [2023-11-23 20:34:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965863388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:33,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:34:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015362513] [2023-11-23 20:34:33,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:33,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:34:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:33,442 INFO L87 Difference]: Start difference. First operand 4450 states and 6569 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 20:34:35,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []