./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--video--fbdev--udlfb.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_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/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_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/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--video--fbdev--udlfb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/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_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/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 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:23:45,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:23:46,099 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:23:46,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:23:46,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:23:46,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:23:46,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:23:46,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:23:46,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:23:46,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:23:46,187 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:23:46,188 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:23:46,189 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:23:46,191 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:23:46,191 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:23:46,192 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:23:46,192 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:23:46,193 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:23:46,193 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:23:46,194 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:23:46,194 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:23:46,195 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:23:46,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:23:46,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:23:46,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:23:46,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:23:46,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:23:46,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:23:46,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:23:46,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:23:46,202 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:23:46,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:23:46,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:23:46,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:23:46,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:23:46,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:23:46,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:23:46,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:23:46,204 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:23:46,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:23:46,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:23:46,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:23:46,205 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:23:46,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:23:46,206 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_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d40b2043e7a83af3849efad1c4fa824e696aef038aa449d52dadf52dd97034 [2023-11-23 21:23:46,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:23:46,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:23:46,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:23:46,668 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:23:46,669 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:23:46,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2023-11-23 21:23:49,869 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:23:50,661 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:23:50,661 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2023-11-23 21:23:50,731 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/data/d7bc1c49f/57da28b85d3e44dc80be7925258e8631/FLAG73ef689ee [2023-11-23 21:23:50,750 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/data/d7bc1c49f/57da28b85d3e44dc80be7925258e8631 [2023-11-23 21:23:50,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:23:50,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:23:50,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:23:50,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:23:50,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:23:50,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:23:50" (1/1) ... [2023-11-23 21:23:50,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c397e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:50, skipping insertion in model container [2023-11-23 21:23:50,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:23:50" (1/1) ... [2023-11-23 21:23:50,976 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:23:53,515 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_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2023-11-23 21:23:53,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:23:53,857 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:23:53,957 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 *)"./arch/x86/include/asm/paravirt.h"), "i" (179), "i" (12UL)); [4067-4068] [2023-11-23 21:23:53,959 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c6;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c5\n .byte 772b-771b\n .short %c7\n.popsection\n": "=D" (__edi), "=S" (__esi), "=d" (__edx), "=c" (__ecx), "=a" (__eax): [paravirt_typenum] "i" (34UL), [paravirt_opptr] "i" (& pv_cpu_ops.read_tsc), [paravirt_clobber] "i" (511): "memory", "cc", "r8", "r9", "r10", "r11"); [4073-4076] [2023-11-23 21:23:53,960 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("661:\n\tprefetcht0 %P1\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 ( 6*32+ 8)\n .byte 663b-661b\n .byte 6651f-6641f\n .byte 663b-662b\n.popsection\n.pushsection .altinstr_replacement, \"ax\"\n6641:\n\tprefetchw %P1\n6651:\n\t.popsection": : "i" (0), "m" (*((char const *)x))); [4084-4085] [2023-11-23 21:23:53,961 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; addl %1,%0": "+m" (v->counter): "ir" (i)); [4108] [2023-11-23 21:23:53,962 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"); [4116-4117] [2023-11-23 21:23:53,963 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"); [4128-4129] [2023-11-23 21:23:53,963 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"); [4132-4133] [2023-11-23 21:23:53,964 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"); [4136-4137] [2023-11-23 21:23:53,964 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"); [4140-4141] [2023-11-23 21:23:54,021 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)front) [4941] [2023-11-23 21:23:54,021 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)back) [4942] [2023-11-23 21:23:54,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/5262/dscv_tempdir/dscv/ri/32_7a/drivers/video/fbdev/udlfb.c"), "i" (1932), "i" (12UL)); [6665-6666] [2023-11-23 21:23:54,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/5262/dscv_tempdir/dscv/ri/32_7a/drivers/video/fbdev/udlfb.c"), "i" (1950), "i" (12UL)); [6689-6690] [2023-11-23 21:23:54,315 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_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i[222868,222881] [2023-11-23 21:23:54,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:23:54,526 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:23:54,526 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:23:54,536 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:23:54,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54 WrapperNode [2023-11-23 21:23:54,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:23:54,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:23:54,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:23:54,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:23:54,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:54,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,040 INFO L138 Inliner]: procedures = 319, calls = 1724, calls flagged for inlining = 116, calls inlined = 108, statements flattened = 4196 [2023-11-23 21:23:55,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:23:55,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:23:55,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:23:55,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:23:55,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:23:55,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:23:55,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:23:55,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:23:55,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (1/1) ... [2023-11-23 21:23:55,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:23:55,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:55,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:23:55,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2adc1d2f-0e8f-468b-81b2-7cf92ef96480/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:23:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-23 21:23:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-23 21:23:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2023-11-23 21:23:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2023-11-23 21:23:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-23 21:23:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-23 21:23:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2023-11-23 21:23:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2023-11-23 21:23:55,537 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2023-11-23 21:23:55,537 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2023-11-23 21:23:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:23:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:23:55,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:23:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:23:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:23:55,539 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:23:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2023-11-23 21:23:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2023-11-23 21:23:55,540 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2023-11-23 21:23:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2023-11-23 21:23:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2023-11-23 21:23:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2023-11-23 21:23:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:23:55,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:23:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2023-11-23 21:23:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2023-11-23 21:23:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-23 21:23:55,542 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-23 21:23:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2023-11-23 21:23:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2023-11-23 21:23:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2023-11-23 21:23:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2023-11-23 21:23:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2023-11-23 21:23:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2023-11-23 21:23:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-23 21:23:55,544 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-23 21:23:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:23:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:23:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2023-11-23 21:23:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2023-11-23 21:23:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:23:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:23:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-11-23 21:23:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-11-23 21:23:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-23 21:23:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-23 21:23:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:23:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:23:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2023-11-23 21:23:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2023-11-23 21:23:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:23:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:23:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2023-11-23 21:23:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2023-11-23 21:23:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2023-11-23 21:23:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2023-11-23 21:23:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 21:23:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 21:23:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:23:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:23:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2023-11-23 21:23:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2023-11-23 21:23:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:23:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:23:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:23:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:23:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2023-11-23 21:23:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2023-11-23 21:23:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure up [2023-11-23 21:23:55,553 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2023-11-23 21:23:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:23:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2023-11-23 21:23:55,554 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2023-11-23 21:23:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-23 21:23:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:23:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:23:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2023-11-23 21:23:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2023-11-23 21:23:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:23:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2023-11-23 21:23:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2023-11-23 21:23:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:23:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2023-11-23 21:23:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2023-11-23 21:23:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:23:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:23:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-23 21:23:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-23 21:23:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:23:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:23:55,558 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:23:55,558 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:23:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 21:23:55,559 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 21:23:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2023-11-23 21:23:55,559 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2023-11-23 21:23:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-23 21:23:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-23 21:23:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-23 21:23:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-23 21:23:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:23:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2023-11-23 21:23:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2023-11-23 21:23:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:23:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:23:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:23:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2023-11-23 21:23:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2023-11-23 21:23:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:23:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_fb_info [2023-11-23 21:23:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_fb_info [2023-11-23 21:23:55,563 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2023-11-23 21:23:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2023-11-23 21:23:55,563 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2023-11-23 21:23:55,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2023-11-23 21:23:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:23:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:23:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2023-11-23 21:23:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2023-11-23 21:23:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:23:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:23:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:23:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:23:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2023-11-23 21:23:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2023-11-23 21:23:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-23 21:23:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-23 21:23:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2023-11-23 21:23:55,567 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2023-11-23 21:23:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:23:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2023-11-23 21:23:55,567 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2023-11-23 21:23:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2023-11-23 21:23:55,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2023-11-23 21:23:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-23 21:23:55,568 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-23 21:23:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:23:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:23:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_release_urb_work [2023-11-23 21:23:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_release_urb_work [2023-11-23 21:23:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:23:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:23:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:23:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2023-11-23 21:23:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2023-11-23 21:23:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:23:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:23:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2023-11-23 21:23:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2023-11-23 21:23:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:23:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2023-11-23 21:23:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2023-11-23 21:23:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:23:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:23:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:23:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2023-11-23 21:23:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2023-11-23 21:23:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2023-11-23 21:23:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2023-11-23 21:23:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 21:23:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 21:23:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 21:23:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 21:23:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2023-11-23 21:23:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2023-11-23 21:23:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-11-23 21:23:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-11-23 21:23:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2023-11-23 21:23:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2023-11-23 21:23:55,576 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-23 21:23:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-23 21:23:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:23:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:23:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2023-11-23 21:23:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2023-11-23 21:23:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-11-23 21:23:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-11-23 21:23:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:23:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-23 21:23:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-23 21:23:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:23:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:23:56,477 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:23:56,484 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:23:56,869 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:24:07,144 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:24:08,432 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:24:08,432 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:24:08,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:08 BoogieIcfgContainer [2023-11-23 21:24:08,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:24:08,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:24:08,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:24:08,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:24:08,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:23:50" (1/3) ... [2023-11-23 21:24:08,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b53be2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:08, skipping insertion in model container [2023-11-23 21:24:08,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:54" (2/3) ... [2023-11-23 21:24:08,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b53be2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:24:08, skipping insertion in model container [2023-11-23 21:24:08,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:24:08" (3/3) ... [2023-11-23 21:24:08,444 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--fbdev--udlfb.ko-entry_point.cil.out.i [2023-11-23 21:24:08,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:24:08,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:24:08,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:24:08,552 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;@3206249f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:24:08,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:24:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 1106 states, 686 states have (on average 1.3425655976676385) internal successors, (921), 717 states have internal predecessors, (921), 337 states have call successors, (337), 82 states have call predecessors, (337), 81 states have return successors, (329), 324 states have call predecessors, (329), 329 states have call successors, (329) [2023-11-23 21:24:08,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-11-23 21:24:08,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:08,595 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:24:08,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:08,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash 677635301, now seen corresponding path program 1 times [2023-11-23 21:24:08,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:08,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174646041] [2023-11-23 21:24:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:08,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2023-11-23 21:24:10,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:10,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174646041] [2023-11-23 21:24:10,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174646041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:10,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:10,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:24:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612746235] [2023-11-23 21:24:10,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:10,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:10,519 INFO L87 Difference]: Start difference. First operand has 1106 states, 686 states have (on average 1.3425655976676385) internal successors, (921), 717 states have internal predecessors, (921), 337 states have call successors, (337), 82 states have call predecessors, (337), 81 states have return successors, (329), 324 states have call predecessors, (329), 329 states have call successors, (329) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:24:14,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:24:17,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:24:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:18,340 INFO L93 Difference]: Finished difference Result 3170 states and 4598 transitions. [2023-11-23 21:24:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:18,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 301 [2023-11-23 21:24:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:18,425 INFO L225 Difference]: With dead ends: 3170 [2023-11-23 21:24:18,426 INFO L226 Difference]: Without dead ends: 2099 [2023-11-23 21:24:18,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:18,446 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 1449 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:18,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 2819 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 344 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2023-11-23 21:24:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2023-11-23 21:24:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2095. [2023-11-23 21:24:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 1318 states have (on average 1.330804248861912) internal successors, (1754), 1354 states have internal predecessors, (1754), 617 states have call successors, (617), 160 states have call predecessors, (617), 159 states have return successors, (610), 600 states have call predecessors, (610), 610 states have call successors, (610) [2023-11-23 21:24:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2981 transitions. [2023-11-23 21:24:18,773 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2981 transitions. Word has length 301 [2023-11-23 21:24:18,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:18,776 INFO L495 AbstractCegarLoop]: Abstraction has 2095 states and 2981 transitions. [2023-11-23 21:24:18,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-23 21:24:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2981 transitions. [2023-11-23 21:24:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-11-23 21:24:18,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:18,796 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:24:18,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:24:18,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:18,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1559382306, now seen corresponding path program 1 times [2023-11-23 21:24:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:18,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113384965] [2023-11-23 21:24:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:18,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2023-11-23 21:24:19,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113384965] [2023-11-23 21:24:19,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113384965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:19,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:19,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:24:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080550968] [2023-11-23 21:24:19,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:19,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:19,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:19,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:19,764 INFO L87 Difference]: Start difference. First operand 2095 states and 2981 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 21:24:20,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:24:22,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:24:25,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:24:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:26,944 INFO L93 Difference]: Finished difference Result 6094 states and 8653 transitions. [2023-11-23 21:24:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:26,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 313 [2023-11-23 21:24:26,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:26,986 INFO L225 Difference]: With dead ends: 6094 [2023-11-23 21:24:26,986 INFO L226 Difference]: Without dead ends: 4060 [2023-11-23 21:24:26,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:26,998 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 1481 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:26,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2681 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2023-11-23 21:24:27,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4060 states. [2023-11-23 21:24:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4060 to 4045. [2023-11-23 21:24:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 2547 states have (on average 1.3301923831959168) internal successors, (3388), 2613 states have internal predecessors, (3388), 1180 states have call successors, (1180), 318 states have call predecessors, (1180), 317 states have return successors, (1173), 1153 states have call predecessors, (1173), 1173 states have call successors, (1173) [2023-11-23 21:24:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 5741 transitions. [2023-11-23 21:24:27,301 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 5741 transitions. Word has length 313 [2023-11-23 21:24:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:27,307 INFO L495 AbstractCegarLoop]: Abstraction has 4045 states and 5741 transitions. [2023-11-23 21:24:27,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 21:24:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 5741 transitions. [2023-11-23 21:24:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-11-23 21:24:27,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:27,316 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:24:27,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:24:27,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:27,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1946671456, now seen corresponding path program 1 times [2023-11-23 21:24:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068095596] [2023-11-23 21:24:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2023-11-23 21:24:28,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068095596] [2023-11-23 21:24:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068095596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:28,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:28,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:24:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024411766] [2023-11-23 21:24:28,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:28,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:28,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:28,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:28,263 INFO L87 Difference]: Start difference. First operand 4045 states and 5741 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 21:24:31,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:24:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:32,741 INFO L93 Difference]: Finished difference Result 4047 states and 5742 transitions. [2023-11-23 21:24:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2023-11-23 21:24:32,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:32,778 INFO L225 Difference]: With dead ends: 4047 [2023-11-23 21:24:32,779 INFO L226 Difference]: Without dead ends: 4044 [2023-11-23 21:24:32,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:32,784 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 1481 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:32,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1384 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-23 21:24:32,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2023-11-23 21:24:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 4044. [2023-11-23 21:24:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 2547 states have (on average 1.3297997644287396) internal successors, (3387), 2612 states have internal predecessors, (3387), 1179 states have call successors, (1179), 318 states have call predecessors, (1179), 317 states have return successors, (1173), 1153 states have call predecessors, (1173), 1173 states have call successors, (1173) [2023-11-23 21:24:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 5739 transitions. [2023-11-23 21:24:33,083 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 5739 transitions. Word has length 316 [2023-11-23 21:24:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:33,085 INFO L495 AbstractCegarLoop]: Abstraction has 4044 states and 5739 transitions. [2023-11-23 21:24:33,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 21:24:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 5739 transitions. [2023-11-23 21:24:33,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-23 21:24:33,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:33,093 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:24:33,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:24:33,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:33,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash -217759333, now seen corresponding path program 1 times [2023-11-23 21:24:33,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:33,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023209821] [2023-11-23 21:24:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:33,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2023-11-23 21:24:33,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:33,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023209821] [2023-11-23 21:24:33,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023209821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:33,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:33,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:24:33,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380818693] [2023-11-23 21:24:33,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:33,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:33,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:33,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:33,903 INFO L87 Difference]: Start difference. First operand 4044 states and 5739 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, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-23 21:24:35,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []