./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/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_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:08:08,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:08:08,333 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:08:08,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:08:08,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:08:08,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:08:08,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:08:08,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:08:08,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:08:08,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:08:08,393 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:08:08,395 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:08:08,395 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:08:08,396 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:08:08,396 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:08:08,397 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:08:08,397 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:08:08,398 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:08:08,398 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:08:08,398 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:08:08,399 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:08:08,400 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:08:08,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:08:08,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:08:08,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:08:08,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:08:08,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:08:08,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:08:08,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:08:08,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:08:08,406 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:08:08,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:08:08,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:08:08,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:08,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:08:08,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:08:08,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:08:08,408 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:08:08,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:08:08,408 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:08:08,408 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:08:08,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:08:08,409 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_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 [2023-11-12 00:08:08,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:08:08,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:08:08,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:08:08,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:08:08,806 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:08:08,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2023-11-12 00:08:11,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:08:12,546 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:08:12,548 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2023-11-12 00:08:12,601 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/data/f3254b15e/a9a1030da44542beada38152f5624814/FLAG202c450ff [2023-11-12 00:08:12,623 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/data/f3254b15e/a9a1030da44542beada38152f5624814 [2023-11-12 00:08:12,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:08:12,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:08:12,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:12,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:08:12,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:08:12,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:12" (1/1) ... [2023-11-12 00:08:12,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1b759a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:12, skipping insertion in model container [2023-11-12 00:08:12,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:08:12" (1/1) ... [2023-11-12 00:08:12,778 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:08:14,409 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_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2023-11-12 00:08:14,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:14,558 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:08:14,663 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] [2023-11-12 00:08:14,665 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] [2023-11-12 00:08:14,666 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] [2023-11-12 00:08:14,666 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] [2023-11-12 00:08:14,668 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] [2023-11-12 00:08:14,668 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] [2023-11-12 00:08:14,670 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [4616] [2023-11-12 00:08:14,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %1,%0": "=r" (ret): "m" (*((unsigned short volatile *)addr)): "memory"); [4623] [2023-11-12 00:08:14,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4630] [2023-11-12 00:08:14,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [4637] [2023-11-12 00:08:14,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [4644] [2023-11-12 00:08:14,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4651] [2023-11-12 00:08:14,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [4692] [2023-11-12 00:08:14,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [4699] [2023-11-12 00:08:14,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [4706] [2023-11-12 00:08:14,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [4713] [2023-11-12 00:08:14,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [4720] [2023-11-12 00:08:14,993 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_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2023-11-12 00:08:15,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:08:15,262 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:08:15,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15 WrapperNode [2023-11-12 00:08:15,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:08:15,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:15,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:08:15,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:08:15,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,551 INFO L138 Inliner]: procedures = 200, calls = 1539, calls flagged for inlining = 99, calls inlined = 85, statements flattened = 3550 [2023-11-12 00:08:15,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:08:15,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:08:15,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:08:15,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:08:15,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:08:15,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:08:15,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:08:15,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:08:15,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (1/1) ... [2023-11-12 00:08:15,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:08:15,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:15,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:08:15,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:08:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:08:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:08:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-12 00:08:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-12 00:08:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-12 00:08:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-12 00:08:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-12 00:08:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-12 00:08:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:08:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:08:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2023-11-12 00:08:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2023-11-12 00:08:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-12 00:08:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-12 00:08:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-12 00:08:15,938 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-12 00:08:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-12 00:08:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-12 00:08:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-11-12 00:08:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-11-12 00:08:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2023-11-12 00:08:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2023-11-12 00:08:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 00:08:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 00:08:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-12 00:08:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-12 00:08:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:08:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:08:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:08:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:08:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-12 00:08:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-12 00:08:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-12 00:08:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-12 00:08:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 00:08:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 00:08:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-12 00:08:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-12 00:08:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:08:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-12 00:08:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-12 00:08:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:08:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-12 00:08:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-12 00:08:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:08:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:08:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-12 00:08:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-12 00:08:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-12 00:08:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-12 00:08:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-12 00:08:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-12 00:08:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2023-11-12 00:08:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2023-11-12 00:08:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:08:15,947 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:08:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2023-11-12 00:08:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2023-11-12 00:08:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2023-11-12 00:08:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2023-11-12 00:08:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:08:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-12 00:08:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-12 00:08:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-12 00:08:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-12 00:08:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 00:08:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 00:08:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:08:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:08:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-12 00:08:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-12 00:08:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2023-11-12 00:08:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2023-11-12 00:08:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:08:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:08:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2023-11-12 00:08:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2023-11-12 00:08:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:08:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:08:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:08:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-12 00:08:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-12 00:08:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-12 00:08:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-12 00:08:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2023-11-12 00:08:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2023-11-12 00:08:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:08:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-12 00:08:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-12 00:08:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:08:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2023-11-12 00:08:15,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2023-11-12 00:08:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:08:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-12 00:08:15,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-12 00:08:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2023-11-12 00:08:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2023-11-12 00:08:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2023-11-12 00:08:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2023-11-12 00:08:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-12 00:08:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-12 00:08:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-12 00:08:15,958 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-12 00:08:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2023-11-12 00:08:15,958 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2023-11-12 00:08:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2023-11-12 00:08:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2023-11-12 00:08:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-12 00:08:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-12 00:08:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-12 00:08:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-12 00:08:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-12 00:08:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-12 00:08:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2023-11-12 00:08:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2023-11-12 00:08:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2023-11-12 00:08:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2023-11-12 00:08:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:08:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-11-12 00:08:15,961 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-11-12 00:08:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2023-11-12 00:08:15,961 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2023-11-12 00:08:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2023-11-12 00:08:15,962 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2023-11-12 00:08:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-11-12 00:08:15,962 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-11-12 00:08:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:08:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:08:15,963 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 00:08:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 00:08:16,581 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:08:16,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:08:17,480 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:08:17,489 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:08:17,501 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:08:17,502 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:08:17,505 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:08:17,506 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:08:17,517 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:08:20,150 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##268: assume !false; [2023-11-12 00:08:20,150 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##267: assume false; [2023-11-12 00:08:20,151 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##282: assume !false; [2023-11-12 00:08:20,158 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##281: assume false; [2023-11-12 00:08:20,159 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##313: assume !false; [2023-11-12 00:08:20,159 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##312: assume false; [2023-11-12 00:08:20,159 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##319: assume !false; [2023-11-12 00:08:20,159 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##318: assume false; [2023-11-12 00:08:20,159 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##463: assume !false; [2023-11-12 00:08:20,160 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##462: assume false; [2023-11-12 00:08:20,160 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2023-11-12 00:08:20,160 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2023-11-12 00:08:20,160 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2023-11-12 00:08:20,160 INFO L770 $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; [2023-11-12 00:08:20,274 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:08:21,491 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:08:21,492 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:08:21,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:21 BoogieIcfgContainer [2023-11-12 00:08:21,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:08:21,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:08:21,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:08:21,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:08:21,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:08:12" (1/3) ... [2023-11-12 00:08:21,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387d8b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:21, skipping insertion in model container [2023-11-12 00:08:21,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:08:15" (2/3) ... [2023-11-12 00:08:21,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387d8b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:08:21, skipping insertion in model container [2023-11-12 00:08:21,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:08:21" (3/3) ... [2023-11-12 00:08:21,507 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2023-11-12 00:08:21,530 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:08:21,530 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:08:21,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:08:21,618 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;@7adb97fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:08:21,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:08:21,629 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) [2023-11-12 00:08:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:08:21,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:21,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:21,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:21,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash -757202749, now seen corresponding path program 1 times [2023-11-12 00:08:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304963652] [2023-11-12 00:08:21,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:21,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:22,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:22,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304963652] [2023-11-12 00:08:22,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304963652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:22,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:08:22,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:08:22,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605567973] [2023-11-12 00:08:22,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:22,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:08:22,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:08:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:08:22,480 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) [2023-11-12 00:08:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:23,857 INFO L93 Difference]: Finished difference Result 1752 states and 2519 transitions. [2023-11-12 00:08:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:08:23,860 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 [2023-11-12 00:08:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:23,888 INFO L225 Difference]: With dead ends: 1752 [2023-11-12 00:08:23,891 INFO L226 Difference]: Without dead ends: 875 [2023-11-12 00:08:23,904 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 [2023-11-12 00:08:23,911 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 0 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:23,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2227 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 00:08:23,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-12 00:08:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2023-11-12 00:08:24,109 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) [2023-11-12 00:08:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1255 transitions. [2023-11-12 00:08:24,125 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1255 transitions. Word has length 15 [2023-11-12 00:08:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:24,125 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1255 transitions. [2023-11-12 00:08:24,126 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) [2023-11-12 00:08:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1255 transitions. [2023-11-12 00:08:24,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:08:24,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:24,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:08:24,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:08:24,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:24,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:24,129 INFO L85 PathProgramCache]: Analyzing trace with hash 76471078, now seen corresponding path program 1 times [2023-11-12 00:08:24,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:24,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427765131] [2023-11-12 00:08:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:24,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427765131] [2023-11-12 00:08:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427765131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:08:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271883285] [2023-11-12 00:08:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:24,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:08:24,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:24,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:08:24,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:08:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:25,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:08:25,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:08:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:08:25,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:08:25,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271883285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:25,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:08:25,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-12 00:08:25,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878500339] [2023-11-12 00:08:25,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:25,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:08:25,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:08:25,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:08:25,166 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) [2023-11-12 00:08:26,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:08:26,650 INFO L93 Difference]: Finished difference Result 2541 states and 3638 transitions. [2023-11-12 00:08:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:08:26,651 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 [2023-11-12 00:08:26,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:08:26,665 INFO L225 Difference]: With dead ends: 2541 [2023-11-12 00:08:26,666 INFO L226 Difference]: Without dead ends: 1669 [2023-11-12 00:08:26,669 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 [2023-11-12 00:08:26,671 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 1134 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:08:26,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 2357 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:08:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-11-12 00:08:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1665. [2023-11-12 00:08:26,770 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) [2023-11-12 00:08:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2380 transitions. [2023-11-12 00:08:26,830 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2380 transitions. Word has length 16 [2023-11-12 00:08:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:08:26,831 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2380 transitions. [2023-11-12 00:08:26,831 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) [2023-11-12 00:08:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2380 transitions. [2023-11-12 00:08:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 00:08:26,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:08:26,834 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] [2023-11-12 00:08:26,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:08:27,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:08:27,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:08:27,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:08:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1161259706, now seen corresponding path program 1 times [2023-11-12 00:08:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:08:27,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114967197] [2023-11-12 00:08:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:08:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:27,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:08:27,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114967197] [2023-11-12 00:08:27,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114967197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:08:27,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950433492] [2023-11-12 00:08:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:08:27,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:08:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:08:27,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:08:27,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6884d0ce-af98-4b2b-b13b-dbfc9902aa29/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:08:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:08:27,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:08:27,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:08:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:27,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:08:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:08:28,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950433492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:08:28,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1950102283] [2023-11-12 00:08:28,053 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-11-12 00:08:28,053 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:08:28,059 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:08:28,065 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:08:28,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:08:48,055 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 108 for LOIs [2023-11-12 00:08:48,098 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 93 for LOIs [2023-11-12 00:08:48,133 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 148 for LOIs [2023-11-12 00:08:48,243 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 103 for LOIs [2023-11-12 00:08:48,288 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:08:58,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1950102283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:08:58,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:08:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 3, 4] total 30 [2023-11-12 00:08:58,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046998800] [2023-11-12 00:08:58,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:08:58,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-12 00:08:58,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:08:58,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-12 00:08:58,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=749, Unknown=7, NotChecked=0, Total=870 [2023-11-12 00:08:58,403 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) [2023-11-12 00:09:01,532 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]