./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ --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 f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:17,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:17,959 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:22:17,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:17,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:18,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:18,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:18,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:18,012 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:18,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:18,017 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:18,019 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:18,019 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:18,020 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:22:18,021 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:18,021 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:18,022 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:22:18,022 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:22:18,023 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:18,023 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:22:18,023 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:22:18,024 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:22:18,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:18,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:22:18,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:22:18,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:18,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:22:18,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:18,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:22:18,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:22:18,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:18,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:18,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:18,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:18,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:18,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:18,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:22:18,030 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:22:18,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:22:18,031 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:22:18,031 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:18,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:18,031 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_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 [2023-11-19 05:22:18,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:18,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:18,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:18,388 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:18,389 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:18,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2023-11-19 05:22:21,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:22,203 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:22,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2023-11-19 05:22:22,253 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/data/ce7de5ee9/e33567d960264b8b9efaac1f130ef91d/FLAGb8d808ee2 [2023-11-19 05:22:22,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/data/ce7de5ee9/e33567d960264b8b9efaac1f130ef91d [2023-11-19 05:22:22,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:22,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:22,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:22,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:22,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:22,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:22" (1/1) ... [2023-11-19 05:22:22,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37034cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:22, skipping insertion in model container [2023-11-19 05:22:22,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:22" (1/1) ... [2023-11-19 05:22:22,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:24,184 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_d7562811-acb6-4bcf-b8a4-bd552039d22d/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2023-11-19 05:22:24,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:24,275 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:24,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4501] [2023-11-19 05:22:24,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [4508] [2023-11-19 05:22:24,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; bts %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4515-4516] [2023-11-19 05:22:24,439 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4523-4524] [2023-11-19 05:22:24,441 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 *)"/anthill/stuff/tacas-comp/inst/current/envs/linux-3.0.1/linux-3.0.1/arch/x86/include/asm/paravirt.h"), "i" (853), "i" (12UL)); [4560-4561] [2023-11-19 05:22:24,441 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (46UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [4566-4568] [2023-11-19 05:22:24,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [4616] [2023-11-19 05:22:24,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %1,%0": "=r" (ret): "m" (*((unsigned short volatile *)addr)): "memory"); [4623] [2023-11-19 05:22:24,443 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4630] [2023-11-19 05:22:24,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [4637] [2023-11-19 05:22:24,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [4644] [2023-11-19 05:22:24,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4651] [2023-11-19 05:22:24,445 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [4692] [2023-11-19 05:22:24,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [4699] [2023-11-19 05:22:24,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [4706] [2023-11-19 05:22:24,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [4713] [2023-11-19 05:22:24,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [4720] [2023-11-19 05:22:24,706 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_d7562811-acb6-4bcf-b8a4-bd552039d22d/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2023-11-19 05:22:24,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:24,999 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:25,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25 WrapperNode [2023-11-19 05:22:25,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:25,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:25,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:25,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:25,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,249 INFO L138 Inliner]: procedures = 200, calls = 1539, calls flagged for inlining = 99, calls inlined = 85, statements flattened = 3550 [2023-11-19 05:22:25,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:25,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:25,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:25,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:25,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:25,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:25,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:25,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:25,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (1/1) ... [2023-11-19 05:22:25,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:25,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:25,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:22:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:22:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-19 05:22:25,545 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-19 05:22:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-19 05:22:25,546 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-19 05:22:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-19 05:22:25,546 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-19 05:22:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:22:25,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:22:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-11-19 05:22:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-11-19 05:22:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-19 05:22:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-19 05:22:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-19 05:22:25,550 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-19 05:22:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 05:22:25,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 05:22:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-11-19 05:22:25,551 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-11-19 05:22:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2023-11-19 05:22:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2023-11-19 05:22:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 05:22:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 05:22:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-19 05:22:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-19 05:22:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:22:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:22:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:22:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:22:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-19 05:22:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-19 05:22:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-19 05:22:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-19 05:22:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:22:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:22:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-19 05:22:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-19 05:22:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:22:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-19 05:22:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-19 05:22:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:22:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 05:22:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 05:22:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:22:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:22:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:22:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:22:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-19 05:22:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-19 05:22:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 05:22:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 05:22:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2023-11-19 05:22:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2023-11-19 05:22:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 05:22:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 05:22:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2023-11-19 05:22:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2023-11-19 05:22:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2023-11-19 05:22:25,559 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2023-11-19 05:22:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:22:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 05:22:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 05:22:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-19 05:22:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-19 05:22:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:22:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:22:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:22:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:22:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-19 05:22:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-19 05:22:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2023-11-19 05:22:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2023-11-19 05:22:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:22:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:22:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2023-11-19 05:22:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2023-11-19 05:22:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:22:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:22:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:22:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-19 05:22:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-19 05:22:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-19 05:22:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-19 05:22:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2023-11-19 05:22:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2023-11-19 05:22:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:22:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-19 05:22:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-19 05:22:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2023-11-19 05:22:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2023-11-19 05:22:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:22:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-19 05:22:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-19 05:22:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2023-11-19 05:22:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2023-11-19 05:22:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2023-11-19 05:22:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2023-11-19 05:22:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 05:22:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 05:22:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-19 05:22:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-19 05:22:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2023-11-19 05:22:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2023-11-19 05:22:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2023-11-19 05:22:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2023-11-19 05:22:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-19 05:22:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-19 05:22:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-19 05:22:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-19 05:22:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-19 05:22:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-19 05:22:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2023-11-19 05:22:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2023-11-19 05:22:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2023-11-19 05:22:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2023-11-19 05:22:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:22:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-11-19 05:22:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-11-19 05:22:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2023-11-19 05:22:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2023-11-19 05:22:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2023-11-19 05:22:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2023-11-19 05:22:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-11-19 05:22:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-11-19 05:22:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:22:25,573 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:22:26,180 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:26,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:27,078 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:22:27,086 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:22:27,096 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:22:27,097 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:22:27,099 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:22:27,100 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:22:27,111 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:22:29,313 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##268: assume !false; [2023-11-19 05:22:29,314 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##267: assume false; [2023-11-19 05:22:29,314 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##282: assume !false; [2023-11-19 05:22:29,314 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##281: assume false; [2023-11-19 05:22:29,314 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##313: assume !false; [2023-11-19 05:22:29,315 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##312: assume false; [2023-11-19 05:22:29,315 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##319: assume !false; [2023-11-19 05:22:29,315 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##318: assume false; [2023-11-19 05:22:29,315 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##463: assume !false; [2023-11-19 05:22:29,315 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##462: assume false; [2023-11-19 05:22:29,316 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2023-11-19 05:22:29,316 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2023-11-19 05:22:29,316 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2023-11-19 05:22:29,316 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false;call ULTIMATE.dealloc(fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset);havoc fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset;call ULTIMATE.dealloc(fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset);havoc fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset; [2023-11-19 05:22:29,406 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:30,791 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:30,791 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:22:30,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:30 BoogieIcfgContainer [2023-11-19 05:22:30,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:30,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:30,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:30,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:30,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:22" (1/3) ... [2023-11-19 05:22:30,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc37a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:30, skipping insertion in model container [2023-11-19 05:22:30,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:25" (2/3) ... [2023-11-19 05:22:30,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc37a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:30, skipping insertion in model container [2023-11-19 05:22:30,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:30" (3/3) ... [2023-11-19 05:22:30,817 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2023-11-19 05:22:30,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:30,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:22:30,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:22:30,938 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;@73963102, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:22:30,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:22:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 877 states, 534 states have (on average 1.294007490636704) internal successors, (691), 542 states have internal predecessors, (691), 284 states have call successors, (284), 57 states have call predecessors, (284), 57 states have return successors, (284), 284 states have call predecessors, (284), 284 states have call successors, (284) [2023-11-19 05:22:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:22:30,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:30,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:30,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:30,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash -757202749, now seen corresponding path program 1 times [2023-11-19 05:22:30,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:30,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970570696] [2023-11-19 05:22:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:30,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:31,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:31,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970570696] [2023-11-19 05:22:31,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970570696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:31,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:31,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:31,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104841379] [2023-11-19 05:22:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:31,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:31,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:31,696 INFO L87 Difference]: Start difference. First operand has 877 states, 534 states have (on average 1.294007490636704) internal successors, (691), 542 states have internal predecessors, (691), 284 states have call successors, (284), 57 states have call predecessors, (284), 57 states have return successors, (284), 284 states have call predecessors, (284), 284 states have call successors, (284) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:22:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:32,808 INFO L93 Difference]: Finished difference Result 1752 states and 2519 transitions. [2023-11-19 05:22:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:32,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-19 05:22:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:32,844 INFO L225 Difference]: With dead ends: 1752 [2023-11-19 05:22:32,844 INFO L226 Difference]: Without dead ends: 875 [2023-11-19 05:22:32,855 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 [2023-11-19 05:22:32,860 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 0 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:32,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2227 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:22:32,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-19 05:22:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2023-11-19 05:22:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 534 states have (on average 1.2902621722846441) internal successors, (689), 540 states have internal predecessors, (689), 284 states have call successors, (284), 57 states have call predecessors, (284), 56 states have return successors, (282), 282 states have call predecessors, (282), 282 states have call successors, (282) [2023-11-19 05:22:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1255 transitions. [2023-11-19 05:22:33,008 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1255 transitions. Word has length 15 [2023-11-19 05:22:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:33,009 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1255 transitions. [2023-11-19 05:22:33,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:22:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1255 transitions. [2023-11-19 05:22:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:22:33,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:33,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:33,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:22:33,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:33,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 76471078, now seen corresponding path program 1 times [2023-11-19 05:22:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301257272] [2023-11-19 05:22:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:33,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:33,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:33,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301257272] [2023-11-19 05:22:33,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301257272] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:22:33,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395204493] [2023-11-19 05:22:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:33,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:22:33,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:33,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:22:33,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:22:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:33,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:22:33,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:22:33,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:22:33,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395204493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:33,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:22:33,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:22:33,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058703935] [2023-11-19 05:22:33,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:33,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:22:34,000 INFO L87 Difference]: Start difference. First operand 875 states and 1255 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:22:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:35,579 INFO L93 Difference]: Finished difference Result 2541 states and 3638 transitions. [2023-11-19 05:22:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:35,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-19 05:22:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:35,593 INFO L225 Difference]: With dead ends: 2541 [2023-11-19 05:22:35,593 INFO L226 Difference]: Without dead ends: 1669 [2023-11-19 05:22:35,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:22:35,598 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 1134 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:35,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 2357 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 05:22:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-11-19 05:22:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1665. [2023-11-19 05:22:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1015 states have (on average 1.2886699507389163) internal successors, (1308), 1026 states have internal predecessors, (1308), 537 states have call successors, (537), 113 states have call predecessors, (537), 112 states have return successors, (535), 534 states have call predecessors, (535), 535 states have call successors, (535) [2023-11-19 05:22:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2380 transitions. [2023-11-19 05:22:35,741 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2380 transitions. Word has length 16 [2023-11-19 05:22:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:35,743 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2380 transitions. [2023-11-19 05:22:35,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:22:35,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2380 transitions. [2023-11-19 05:22:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:22:35,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:35,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:35,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:35,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:22:35,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:35,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1161259706, now seen corresponding path program 1 times [2023-11-19 05:22:35,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:35,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993787870] [2023-11-19 05:22:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:35,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:36,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:36,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993787870] [2023-11-19 05:22:36,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993787870] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:22:36,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383808351] [2023-11-19 05:22:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:36,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:22:36,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:36,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:22:36,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7562811-acb6-4bcf-b8a4-bd552039d22d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:22:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:36,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:22:36,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:36,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:36,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383808351] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:22:36,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1063380119] [2023-11-19 05:22:37,002 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-11-19 05:22:37,003 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:22:37,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:22:37,011 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:22:37,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:22:57,586 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 108 for LOIs [2023-11-19 05:22:57,624 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 93 for LOIs [2023-11-19 05:22:57,643 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 148 for LOIs [2023-11-19 05:22:57,730 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 103 for LOIs [2023-11-19 05:22:57,755 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:07,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1063380119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:07,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:07,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2023-11-19 05:23:07,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532330357] [2023-11-19 05:23:07,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:07,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 05:23:07,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:07,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 05:23:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=749, Unknown=7, NotChecked=0, Total=870 [2023-11-19 05:23:07,836 INFO L87 Difference]: Start difference. First operand 1665 states and 2380 transitions. Second operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 18 states have internal predecessors, (22), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:23:10,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:23:12,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]