./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--firewire--firewire-ohci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/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_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/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--firewire--firewire-ohci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/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_af1f7e91-da9b-48c5-9853-0239b0955b65/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 566d5f55091b8d9986e40109bb4ed7c757a10d51a53e185fb47e2dfa177e6461 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:07,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:07,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:37:07,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:07,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:07,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:07,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:07,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:07,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:07,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:07,960 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:07,961 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:07,961 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:07,963 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:37:07,964 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:07,965 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:07,965 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:37:07,966 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:37:07,967 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:07,967 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:37:07,968 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:37:07,969 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:37:07,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:07,971 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:37:07,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:07,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:07,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:37:07,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:07,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:37:07,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:37:07,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:07,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:07,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:37:07,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:07,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:07,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:07,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:07,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:37:07,980 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:37:07,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:37:07,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:07,981 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:37:07,981 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:07,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:07,983 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_af1f7e91-da9b-48c5-9853-0239b0955b65/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566d5f55091b8d9986e40109bb4ed7c757a10d51a53e185fb47e2dfa177e6461 [2023-11-23 20:37:08,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:08,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:08,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:08,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:08,353 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:08,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--firewire--firewire-ohci.ko-entry_point.cil.out.i [2023-11-23 20:37:11,454 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:12,262 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:12,263 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--firewire--firewire-ohci.ko-entry_point.cil.out.i [2023-11-23 20:37:12,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/data/d052719e6/7d6d5204666a40b3a1c65dcc59edc16a/FLAG040c1099a [2023-11-23 20:37:12,352 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/data/d052719e6/7d6d5204666a40b3a1c65dcc59edc16a [2023-11-23 20:37:12,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:12,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:12,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:12,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:12,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:12,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:12" (1/1) ... [2023-11-23 20:37:12,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f84ddae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:12, skipping insertion in model container [2023-11-23 20:37:12,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:12" (1/1) ... [2023-11-23 20:37:12,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:15,398 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_af1f7e91-da9b-48c5-9853-0239b0955b65/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--firewire--firewire-ohci.ko-entry_point.cil.out.i[267295,267308] [2023-11-23 20:37:15,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:15,698 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:15,838 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)); [3612] [2023-11-23 20:37:15,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3619] [2023-11-23 20:37:15,842 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"); [3628-3629] [2023-11-23 20:37:15,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsfl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3651] [2023-11-23 20:37:15,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("661:\n\tcall __sw_hweight32\n662:\n.skip -(((6651f-6641f)-(662b-661b)) > 0) * ((6651f-6641f)-(662b-661b)),0x90\n663:\n.pushsection .altinstructions,\"a\"\n .long 661b - .\n .long 6641f - .\n .word ( 4*32+23)\n .byte 663b-661b\n .byte 6651f-6641f\n .byte 663b-662b\n.popsection\n.pushsection .altinstr_replacement, \"ax\"\n6641:\n\t.byte 0xf3,0x40,0x0f,0xb8,0xc7\n6651:\n\t.popsection": "=a" (res): "D" (w)); [3660] [2023-11-23 20:37:15,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3667] [2023-11-23 20:37:15,848 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [3718] [2023-11-23 20:37:15,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [3725] [2023-11-23 20:37:15,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [3931] [2023-11-23 20:37:15,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [3938] [2023-11-23 20:37:15,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [4100-4101] [2023-11-23 20:37:15,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [4129-4130] [2023-11-23 20:37:15,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (84), "i" (12UL)); [4163-4164] [2023-11-23 20:37:15,886 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (96), "i" (12UL)); [4187-4188] [2023-11-23 20:37:15,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (108), "i" (12UL)); [4217-4218] [2023-11-23 20:37:15,890 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (120), "i" (12UL)); [4247-4248] [2023-11-23 20:37:15,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (134), "i" (12UL)); [4278-4279] [2023-11-23 20:37:15,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (148), "i" (12UL)); [4309-4310] [2023-11-23 20:37:15,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4374] [2023-11-23 20:37:15,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4401] [2023-11-23 20:37:15,910 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [4410] [2023-11-23 20:37:15,911 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4417] [2023-11-23 20:37:16,000 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [4884] [2023-11-23 20:37:16,026 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [4965] [2023-11-23 20:37:16,027 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [4971] [2023-11-23 20:37:16,028 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [4992] [2023-11-23 20:37:16,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5512] [2023-11-23 20:37:16,220 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [6229] [2023-11-23 20:37:16,222 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [6271] [2023-11-23 20:37:16,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7231] [2023-11-23 20:37:16,322 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7892] [2023-11-23 20:37:16,364 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_af1f7e91-da9b-48c5-9853-0239b0955b65/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--firewire--firewire-ohci.ko-entry_point.cil.out.i[267295,267308] [2023-11-23 20:37:16,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:16,512 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:16,520 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:16,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16 WrapperNode [2023-11-23 20:37:16,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:16,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:16,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:16,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:16,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:16,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:16,901 INFO L138 Inliner]: procedures = 373, calls = 2627, calls flagged for inlining = 158, calls inlined = 145, statements flattened = 7352 [2023-11-23 20:37:16,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:16,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:16,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:16,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:16,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:16,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:16,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:16,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:17,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:17,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:17,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:17,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:17,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:17,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:17,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:17,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:17,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (1/1) ... [2023-11-23 20:37:17,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:17,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:17,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:17,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af1f7e91-da9b-48c5-9853-0239b0955b65/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure context_stop [2023-11-23 20:37:17,460 INFO L138 BoogieDeclarations]: Found implementation of procedure context_stop [2023-11-23 20:37:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-23 20:37:17,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-23 20:37:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycle_time [2023-11-23 20:37:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycle_time [2023-11-23 20:37:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure pci_resume [2023-11-23 20:37:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_resume [2023-11-23 20:37:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure ar_next_buffer_index [2023-11-23 20:37:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ar_next_buffer_index [2023-11-23 20:37:17,462 INFO L130 BoogieDeclarations]: Found specification of procedure flush_writes [2023-11-23 20:37:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_writes [2023-11-23 20:37:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 20:37:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 20:37:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_3 [2023-11-23 20:37:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_3 [2023-11-23 20:37:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:37:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:37:17,463 INFO L130 BoogieDeclarations]: Found specification of procedure context_run [2023-11-23 20:37:17,463 INFO L138 BoogieDeclarations]: Found implementation of procedure context_run [2023-11-23 20:37:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:37:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:37:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:37:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:37:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-23 20:37:17,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-23 20:37:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~$Pointer$~TO~VOID [2023-11-23 20:37:17,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~$Pointer$~TO~VOID [2023-11-23 20:37:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_stop_iso [2023-11-23 20:37:17,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_stop_iso [2023-11-23 20:37:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure reg_read [2023-11-23 20:37:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_read [2023-11-23 20:37:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:37:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:37:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2023-11-23 20:37:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2023-11-23 20:37:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_handle_response [2023-11-23 20:37:17,467 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_handle_response [2023-11-23 20:37:17,467 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2023-11-23 20:37:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2023-11-23 20:37:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2023-11-23 20:37:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2023-11-23 20:37:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 20:37:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 20:37:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_phy_reg_mutex_of_fw_ohci [2023-11-23 20:37:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_phy_reg_mutex_of_fw_ohci [2023-11-23 20:37:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_phy_reg_mutex_of_fw_ohci [2023-11-23 20:37:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_phy_reg_mutex_of_fw_ohci [2023-11-23 20:37:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:37:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:37:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_reg [2023-11-23 20:37:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_reg [2023-11-23 20:37:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2023-11-23 20:37:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2023-11-23 20:37:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:37:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:37:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2023-11-23 20:37:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2023-11-23 20:37:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure pmac_ohci_on [2023-11-23 20:37:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure pmac_ohci_on [2023-11-23 20:37:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 20:37:17,471 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 20:37:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure context_append [2023-11-23 20:37:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure context_append [2023-11-23 20:37:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:37:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:37:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_range_for_cpu [2023-11-23 20:37:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_range_for_cpu [2023-11-23 20:37:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:37:17,472 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:37:17,472 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 20:37:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 20:37:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2023-11-23 20:37:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2023-11-23 20:37:17,473 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:37:17,473 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:37:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure context_release [2023-11-23 20:37:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure context_release [2023-11-23 20:37:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure ar_context_release [2023-11-23 20:37:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ar_context_release [2023-11-23 20:37:17,474 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-23 20:37:17,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-23 20:37:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure ar_context_link_page [2023-11-23 20:37:17,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ar_context_link_page [2023-11-23 20:37:17,475 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2023-11-23 20:37:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2023-11-23 20:37:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:37:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:37:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 20:37:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 20:37:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure fw_ohci [2023-11-23 20:37:17,476 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_ohci [2023-11-23 20:37:17,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:37:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-11-23 20:37:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-11-23 20:37:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_start_iso [2023-11-23 20:37:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_start_iso [2023-11-23 20:37:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_2 [2023-11-23 20:37:17,477 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_2 [2023-11-23 20:37:17,477 INFO L130 BoogieDeclarations]: Found specification of procedure dev_notice [2023-11-23 20:37:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_notice [2023-11-23 20:37:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:37:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:37:17,478 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2023-11-23 20:37:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2023-11-23 20:37:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure cycle_timer_ticks [2023-11-23 20:37:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure cycle_timer_ticks [2023-11-23 20:37:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:37:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:37:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2023-11-23 20:37:17,480 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2023-11-23 20:37:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:37:17,480 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:37:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_handle_request [2023-11-23 20:37:17,481 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_handle_request [2023-11-23 20:37:17,482 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:37:17,484 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:37:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-23 20:37:17,485 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-23 20:37:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2023-11-23 20:37:17,486 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2023-11-23 20:37:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-11-23 20:37:17,487 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-11-23 20:37:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 20:37:17,487 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 20:37:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure context_get_descriptors [2023-11-23 20:37:17,492 INFO L138 BoogieDeclarations]: Found implementation of procedure context_get_descriptors [2023-11-23 20:37:17,492 INFO L130 BoogieDeclarations]: Found specification of procedure ar_context_run [2023-11-23 20:37:17,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ar_context_run [2023-11-23 20:37:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-23 20:37:17,493 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-23 20:37:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure __printk_ratelimit [2023-11-23 20:37:17,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __printk_ratelimit [2023-11-23 20:37:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:37:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure ar_context_init [2023-11-23 20:37:17,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ar_context_init [2023-11-23 20:37:17,493 INFO L130 BoogieDeclarations]: Found specification of procedure update_phy_reg [2023-11-23 20:37:17,494 INFO L138 BoogieDeclarations]: Found implementation of procedure update_phy_reg [2023-11-23 20:37:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure detect_dead_context [2023-11-23 20:37:17,494 INFO L138 BoogieDeclarations]: Found implementation of procedure detect_dead_context [2023-11-23 20:37:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 20:37:17,494 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 20:37:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure update_bus_time [2023-11-23 20:37:17,494 INFO L138 BoogieDeclarations]: Found implementation of procedure update_bus_time [2023-11-23 20:37:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:37:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_update_phy_reg [2023-11-23 20:37:17,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_update_phy_reg [2023-11-23 20:37:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_enable [2023-11-23 20:37:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_enable [2023-11-23 20:37:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-11-23 20:37:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-11-23 20:37:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:37:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure set_multichannel_mask [2023-11-23 20:37:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multichannel_mask [2023-11-23 20:37:17,495 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 20:37:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 20:37:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2023-11-23 20:37:17,496 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2023-11-23 20:37:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 20:37:17,496 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 20:37:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure software_reset [2023-11-23 20:37:17,496 INFO L138 BoogieDeclarations]: Found implementation of procedure software_reset [2023-11-23 20:37:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure context_init [2023-11-23 20:37:17,496 INFO L138 BoogieDeclarations]: Found implementation of procedure context_init [2023-11-23 20:37:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure flush_iso_completions [2023-11-23 20:37:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_iso_completions [2023-11-23 20:37:17,497 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2023-11-23 20:37:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2023-11-23 20:37:17,497 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:37:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:37:17,497 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-23 20:37:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-23 20:37:17,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:37:17,497 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 20:37:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 20:37:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-11-23 20:37:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-11-23 20:37:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure read_paged_phy_reg [2023-11-23 20:37:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure read_paged_phy_reg [2023-11-23 20:37:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_range_for_device [2023-11-23 20:37:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_range_for_device [2023-11-23 20:37:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 20:37:17,498 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 20:37:17,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:37:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:37:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure at_context_flush [2023-11-23 20:37:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure at_context_flush [2023-11-23 20:37:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure context_add_buffer [2023-11-23 20:37:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure context_add_buffer [2023-11-23 20:37:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 20:37:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 20:37:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:37:17,499 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 20:37:17,499 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 20:37:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 20:37:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 20:37:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure fw_fill_response [2023-11-23 20:37:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_fill_response [2023-11-23 20:37:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2023-11-23 20:37:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2023-11-23 20:37:17,500 INFO L130 BoogieDeclarations]: Found specification of procedure ar_buffer_bus [2023-11-23 20:37:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ar_buffer_bus [2023-11-23 20:37:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:37:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure context_tasklet [2023-11-23 20:37:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure context_tasklet [2023-11-23 20:37:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-23 20:37:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-23 20:37:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 20:37:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 20:37:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure copy_config_rom [2023-11-23 20:37:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_config_rom [2023-11-23 20:37:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-23 20:37:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-23 20:37:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure pci_remove [2023-11-23 20:37:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_remove [2023-11-23 20:37:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure reg_write [2023-11-23 20:37:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_write [2023-11-23 20:37:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2023-11-23 20:37:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2023-11-23 20:37:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure bus_reset_work [2023-11-23 20:37:17,502 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_reset_work [2023-11-23 20:37:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2023-11-23 20:37:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2023-11-23 20:37:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-23 20:37:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-23 20:37:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_2 [2023-11-23 20:37:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_2 [2023-11-23 20:37:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_read_phy_reg [2023-11-23 20:37:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_read_phy_reg [2023-11-23 20:37:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-23 20:37:17,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-23 20:37:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-11-23 20:37:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-11-23 20:37:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2023-11-23 20:37:17,504 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2023-11-23 20:37:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2023-11-23 20:37:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2023-11-23 20:37:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 20:37:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 20:37:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure log_ar_at_event [2023-11-23 20:37:17,505 INFO L138 BoogieDeclarations]: Found implementation of procedure log_ar_at_event [2023-11-23 20:37:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure fw_schedule_bus_reset [2023-11-23 20:37:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_schedule_bus_reset [2023-11-23 20:37:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure write_phy_reg [2023-11-23 20:37:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure write_phy_reg [2023-11-23 20:37:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2023-11-23 20:37:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2023-11-23 20:37:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2023-11-23 20:37:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2023-11-23 20:37:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure find_branch_descriptor [2023-11-23 20:37:17,506 INFO L138 BoogieDeclarations]: Found implementation of procedure find_branch_descriptor [2023-11-23 20:37:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:37:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure _p [2023-11-23 20:37:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure _p [2023-11-23 20:37:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure at_context_transmit [2023-11-23 20:37:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure at_context_transmit [2023-11-23 20:37:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2023-11-23 20:37:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2023-11-23 20:37:18,437 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:18,446 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:19,221 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:37:24,832 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:29,933 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:29,933 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:37:29,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:29 BoogieIcfgContainer [2023-11-23 20:37:29,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:29,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:29,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:29,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:29,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:12" (1/3) ... [2023-11-23 20:37:29,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb66df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:29, skipping insertion in model container [2023-11-23 20:37:29,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:16" (2/3) ... [2023-11-23 20:37:29,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb66df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:29, skipping insertion in model container [2023-11-23 20:37:29,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:29" (3/3) ... [2023-11-23 20:37:29,949 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--firewire--firewire-ohci.ko-entry_point.cil.out.i [2023-11-23 20:37:29,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:29,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:37:30,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:30,109 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;@3b165052, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:30,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:37:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 1922 states, 1177 states have (on average 1.346644010195412) internal successors, (1585), 1243 states have internal predecessors, (1585), 622 states have call successors, (622), 122 states have call predecessors, (622), 121 states have return successors, (615), 607 states have call predecessors, (615), 615 states have call successors, (615) [2023-11-23 20:37:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-23 20:37:30,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:30,189 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 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 20:37:30,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:30,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1991236428, now seen corresponding path program 1 times [2023-11-23 20:37:30,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:30,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490649993] [2023-11-23 20:37:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:30,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2023-11-23 20:37:31,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:31,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490649993] [2023-11-23 20:37:31,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490649993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:31,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:31,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206190068] [2023-11-23 20:37:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:31,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:31,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:32,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:32,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:32,042 INFO L87 Difference]: Start difference. First operand has 1922 states, 1177 states have (on average 1.346644010195412) internal successors, (1585), 1243 states have internal predecessors, (1585), 622 states have call successors, (622), 122 states have call predecessors, (622), 121 states have return successors, (615), 607 states have call predecessors, (615), 615 states have call successors, (615) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 20:37:34,135 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 20:37:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:37,426 INFO L93 Difference]: Finished difference Result 5149 states and 7571 transitions. [2023-11-23 20:37:37,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:37,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 261 [2023-11-23 20:37:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:37,492 INFO L225 Difference]: With dead ends: 5149 [2023-11-23 20:37:37,493 INFO L226 Difference]: Without dead ends: 3253 [2023-11-23 20:37:37,517 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 20:37:37,521 INFO L413 NwaCegarLoop]: 2917 mSDtfsCounter, 2015 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 5291 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:37,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 5291 Invalid, 733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 730 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-11-23 20:37:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2023-11-23 20:37:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3239. [2023-11-23 20:37:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3239 states, 1989 states have (on average 1.3308195072900955) internal successors, (2647), 2081 states have internal predecessors, (2647), 1023 states have call successors, (1023), 227 states have call predecessors, (1023), 226 states have return successors, (1017), 1007 states have call predecessors, (1017), 1017 states have call successors, (1017) [2023-11-23 20:37:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4687 transitions. [2023-11-23 20:37:37,869 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4687 transitions. Word has length 261 [2023-11-23 20:37:37,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:37,874 INFO L495 AbstractCegarLoop]: Abstraction has 3239 states and 4687 transitions. [2023-11-23 20:37:37,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 20:37:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4687 transitions. [2023-11-23 20:37:37,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-23 20:37:37,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:37,883 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 1, 1, 1, 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 20:37:37,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:37:37,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:37,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:37,885 INFO L85 PathProgramCache]: Analyzing trace with hash 971914571, now seen corresponding path program 1 times [2023-11-23 20:37:37,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:37,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186029731] [2023-11-23 20:37:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:37,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2023-11-23 20:37:39,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:39,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186029731] [2023-11-23 20:37:39,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186029731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:39,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:39,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:39,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092574025] [2023-11-23 20:37:39,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:39,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:39,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:39,119 INFO L87 Difference]: Start difference. First operand 3239 states and 4687 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 20:37:41,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:42,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:46,258 INFO L93 Difference]: Finished difference Result 9522 states and 13771 transitions. [2023-11-23 20:37:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 264 [2023-11-23 20:37:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:46,317 INFO L225 Difference]: With dead ends: 9522 [2023-11-23 20:37:46,317 INFO L226 Difference]: Without dead ends: 6338 [2023-11-23 20:37:46,337 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 20:37:46,338 INFO L413 NwaCegarLoop]: 3590 mSDtfsCounter, 2631 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2631 SdHoareTripleChecker+Valid, 6050 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:46,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2631 Valid, 6050 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 769 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2023-11-23 20:37:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2023-11-23 20:37:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 6334. [2023-11-23 20:37:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6334 states, 3897 states have (on average 1.329997433923531) internal successors, (5183), 4067 states have internal predecessors, (5183), 1989 states have call successors, (1989), 448 states have call predecessors, (1989), 447 states have return successors, (1983), 1964 states have call predecessors, (1983), 1983 states have call successors, (1983) [2023-11-23 20:37:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 9155 transitions. [2023-11-23 20:37:46,960 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 9155 transitions. Word has length 264 [2023-11-23 20:37:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:46,964 INFO L495 AbstractCegarLoop]: Abstraction has 6334 states and 9155 transitions. [2023-11-23 20:37:46,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 20:37:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 9155 transitions. [2023-11-23 20:37:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-23 20:37:46,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:46,973 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:46,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:37:46,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:46,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2027653103, now seen corresponding path program 1 times [2023-11-23 20:37:46,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929444110] [2023-11-23 20:37:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:46,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2023-11-23 20:37:47,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929444110] [2023-11-23 20:37:47,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929444110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:47,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:47,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404551199] [2023-11-23 20:37:47,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:47,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:47,913 INFO L87 Difference]: Start difference. First operand 6334 states and 9155 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 20:37:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:50,828 INFO L93 Difference]: Finished difference Result 6336 states and 9156 transitions. [2023-11-23 20:37:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 266 [2023-11-23 20:37:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:50,890 INFO L225 Difference]: With dead ends: 6336 [2023-11-23 20:37:50,890 INFO L226 Difference]: Without dead ends: 6333 [2023-11-23 20:37:50,897 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 20:37:50,898 INFO L413 NwaCegarLoop]: 2471 mSDtfsCounter, 2718 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:50,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 2471 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 20:37:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2023-11-23 20:37:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 6333. [2023-11-23 20:37:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6333 states, 3897 states have (on average 1.329740826276623) internal successors, (5182), 4066 states have internal predecessors, (5182), 1988 states have call successors, (1988), 448 states have call predecessors, (1988), 447 states have return successors, (1983), 1964 states have call predecessors, (1983), 1983 states have call successors, (1983) [2023-11-23 20:37:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 9153 transitions. [2023-11-23 20:37:51,466 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 9153 transitions. Word has length 266 [2023-11-23 20:37:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:51,467 INFO L495 AbstractCegarLoop]: Abstraction has 6333 states and 9153 transitions. [2023-11-23 20:37:51,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-23 20:37:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 9153 transitions. [2023-11-23 20:37:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-11-23 20:37:51,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:51,473 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:51,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:37:51,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:51,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1568293309, now seen corresponding path program 1 times [2023-11-23 20:37:51,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921432668] [2023-11-23 20:37:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:51,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2023-11-23 20:37:52,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921432668] [2023-11-23 20:37:52,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921432668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:52,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:52,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:52,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253873522] [2023-11-23 20:37:52,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:52,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:52,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:52,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:52,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:52,189 INFO L87 Difference]: Start difference. First operand 6333 states and 9153 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29)