./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2 --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 c9ee75e44352b6ea6b091abc908af4681506ed391b6529699b0d4480d6bf973b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:29:22,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:29:22,793 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:29:22,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:29:22,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:29:22,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:29:22,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:29:22,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:29:22,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:29:22,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:29:22,830 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:29:22,831 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:29:22,832 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:29:22,832 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:29:22,834 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:29:22,835 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:29:22,835 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:29:22,835 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:29:22,836 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:29:22,836 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:29:22,836 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:29:22,841 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:29:22,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:29:22,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:29:22,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:29:22,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:29:22,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:29:22,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:29:22,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:29:22,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:29:22,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:29:22,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:29:22,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:29:22,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:29:22,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:29:22,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:29:22,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:29:22,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:29:22,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:29:22,846 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:29:22,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:29:22,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:29:22,848 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:29:22,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:29:22,849 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_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ee75e44352b6ea6b091abc908af4681506ed391b6529699b0d4480d6bf973b [2024-11-02 12:29:23,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:29:23,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:29:23,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:29:23,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:29:23,235 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:29:23,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-02 12:29:25,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:29:25,719 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:29:25,720 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2024-11-02 12:29:25,756 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/data/4129fa563/a0191f9d09bf4bfb830a02adbbf54347/FLAG5c0703cc3 [2024-11-02 12:29:25,816 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/data/4129fa563/a0191f9d09bf4bfb830a02adbbf54347 [2024-11-02 12:29:25,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:29:25,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:29:25,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:29:25,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:29:25,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:29:25,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:29:25" (1/1) ... [2024-11-02 12:29:25,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69705e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:25, skipping insertion in model container [2024-11-02 12:29:25,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:29:25" (1/1) ... [2024-11-02 12:29:25,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:29:26,430 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2550] [2024-11-02 12:29:26,431 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2551-2552] [2024-11-02 12:29:26,617 WARN L251 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_302e0032-88b6-43d0-beba-9f9ecf1b9412/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i[83666,83679] [2024-11-02 12:29:27,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:29:27,133 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:29:27,257 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2550] [2024-11-02 12:29:27,259 WARN L1334 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2551-2552] [2024-11-02 12:29:27,261 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [2634] [2024-11-02 12:29:27,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("661:\n\tcall __sw_hweight32\n662:\n.pushsection .altinstructions,\"a\"\n .long 661b - .\n .long 6631f - .\n .word (4*32+23)\n .byte 662b-661b\n .byte 6641f-6631f\n.popsection\n.pushsection .discard,\"aw\",@progbits\n .byte 0xff + (6641f-6631f) - (662b-661b)\n.popsection\n.pushsection .altinstr_replacement, \"ax\"\n6631:\n\t.byte 0xf3,0x40,0x0f,0xb8,0xc7\n6641:\n\t.popsection": "=a" (res): "D" (w)); [2643] [2024-11-02 12:29:27,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"./arch/x86/include/asm/paravirt.h"), "i" (179), "i" (12UL)); [2687-2688] [2024-11-02 12:29:27,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c6;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c5\n .byte 772b-771b\n .short %c7\n.popsection\n": "=D" (__edi), "=S" (__esi), "=d" (__edx), "=c" (__ecx), "=a" (__eax): [paravirt_typenum] "i" (34UL), [paravirt_opptr] "i" (& pv_cpu_ops.read_tsc), [paravirt_clobber] "i" (511): "memory", "cc", "r8", "r9", "r10", "r11"); [2693-2696] [2024-11-02 12:29:27,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"./arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [2719-2720] [2024-11-02 12:29:27,270 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" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [2725-2727] [2024-11-02 12:29:27,273 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"./arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [2749-2750] [2024-11-02 12:29:27,274 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" (45UL), [paravirt_opptr] "i" (& pv_irq_ops.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [2755-2757] [2024-11-02 12:29:27,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"./arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [2778-2779] [2024-11-02 12:29:27,275 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.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [2784-2786] [2024-11-02 12:29:27,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [2810] [2024-11-02 12:29:27,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [2818] [2024-11-02 12:29:27,283 WARN L251 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_302e0032-88b6-43d0-beba-9f9ecf1b9412/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i[83666,83679] [2024-11-02 12:29:27,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:29:27,525 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:29:27,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27 WrapperNode [2024-11-02 12:29:27,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:29:27,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:29:27,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:29:27,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:29:27,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,733 INFO L138 Inliner]: procedures = 120, calls = 709, calls flagged for inlining = 40, calls inlined = 38, statements flattened = 2323 [2024-11-02 12:29:27,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:29:27,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:29:27,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:29:27,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:29:27,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:29:27,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:29:27,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:29:27,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:29:27,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (1/1) ... [2024-11-02 12:29:27,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:29:28,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:28,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:29:28,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:29:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2024-11-02 12:29:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2024-11-02 12:29:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2024-11-02 12:29:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2024-11-02 12:29:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2024-11-02 12:29:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2024-11-02 12:29:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:29:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2024-11-02 12:29:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2024-11-02 12:29:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2024-11-02 12:29:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2024-11-02 12:29:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:29:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-02 12:29:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-02 12:29:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:29:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2024-11-02 12:29:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2024-11-02 12:29:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2024-11-02 12:29:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2024-11-02 12:29:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-02 12:29:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-02 12:29:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2024-11-02 12:29:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2024-11-02 12:29:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2024-11-02 12:29:28,078 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2024-11-02 12:29:28,078 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2024-11-02 12:29:28,079 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2024-11-02 12:29:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:29:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2024-11-02 12:29:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2024-11-02 12:29:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2024-11-02 12:29:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2024-11-02 12:29:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2024-11-02 12:29:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2024-11-02 12:29:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:29:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:29:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-02 12:29:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-02 12:29:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:29:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:29:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:29:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2024-11-02 12:29:28,082 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2024-11-02 12:29:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:29:28,082 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2024-11-02 12:29:28,083 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2024-11-02 12:29:28,084 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2024-11-02 12:29:28,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2024-11-02 12:29:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:29:28,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:29:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2024-11-02 12:29:28,086 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2024-11-02 12:29:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2024-11-02 12:29:28,086 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2024-11-02 12:29:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 12:29:28,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 12:29:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2024-11-02 12:29:28,086 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2024-11-02 12:29:28,086 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2024-11-02 12:29:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2024-11-02 12:29:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:29:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2024-11-02 12:29:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2024-11-02 12:29:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2024-11-02 12:29:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2024-11-02 12:29:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2024-11-02 12:29:28,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2024-11-02 12:29:28,087 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2024-11-02 12:29:28,088 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2024-11-02 12:29:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:29:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2024-11-02 12:29:28,088 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2024-11-02 12:29:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2024-11-02 12:29:28,088 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2024-11-02 12:29:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:29:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2024-11-02 12:29:28,088 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2024-11-02 12:29:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2024-11-02 12:29:28,088 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2024-11-02 12:29:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2024-11-02 12:29:28,089 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2024-11-02 12:29:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:29:28,091 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:29:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2024-11-02 12:29:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2024-11-02 12:29:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-02 12:29:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-02 12:29:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2024-11-02 12:29:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2024-11-02 12:29:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:29:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2024-11-02 12:29:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2024-11-02 12:29:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2024-11-02 12:29:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2024-11-02 12:29:28,093 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2024-11-02 12:29:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2024-11-02 12:29:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-02 12:29:28,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-02 12:29:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:29:28,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:29:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2024-11-02 12:29:28,094 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2024-11-02 12:29:28,094 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2024-11-02 12:29:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2024-11-02 12:29:28,496 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:29:28,499 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:29:28,802 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-02 12:29:34,487 INFO L? ?]: Removed 821 outVars from TransFormulas that were not future-live. [2024-11-02 12:29:34,487 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:29:36,089 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:29:36,089 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-02 12:29:36,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:36 BoogieIcfgContainer [2024-11-02 12:29:36,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:29:36,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:29:36,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:29:36,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:29:36,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:29:25" (1/3) ... [2024-11-02 12:29:36,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265e4faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:36, skipping insertion in model container [2024-11-02 12:29:36,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:29:27" (2/3) ... [2024-11-02 12:29:36,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265e4faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:29:36, skipping insertion in model container [2024-11-02 12:29:36,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:29:36" (3/3) ... [2024-11-02 12:29:36,103 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2024-11-02 12:29:36,124 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:29:36,124 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:29:36,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:29:36,219 INFO L333 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, 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;@2f965ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:29:36,220 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:29:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 503 states, 320 states have (on average 1.36875) internal successors, (438), 336 states have internal predecessors, (438), 138 states have call successors, (138), 45 states have call predecessors, (138), 44 states have return successors, (135), 130 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-02 12:29:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:29:36,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:36,236 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:36,237 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:36,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash 525374672, now seen corresponding path program 1 times [2024-11-02 12:29:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:36,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294467606] [2024-11-02 12:29:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:29:37,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294467606] [2024-11-02 12:29:37,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294467606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:37,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:37,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:29:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598521440] [2024-11-02 12:29:37,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:37,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:37,912 INFO L87 Difference]: Start difference. First operand has 503 states, 320 states have (on average 1.36875) internal successors, (438), 336 states have internal predecessors, (438), 138 states have call successors, (138), 45 states have call predecessors, (138), 44 states have return successors, (135), 130 states have call predecessors, (135), 135 states have call successors, (135) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:29:39,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:29:41,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:41,947 INFO L93 Difference]: Finished difference Result 1041 states and 1475 transitions. [2024-11-02 12:29:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:41,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-02 12:29:41,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:41,973 INFO L225 Difference]: With dead ends: 1041 [2024-11-02 12:29:41,973 INFO L226 Difference]: Without dead ends: 526 [2024-11-02 12:29:41,988 INFO L431 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 [2024-11-02 12:29:41,997 INFO L432 NwaCegarLoop]: 582 mSDtfsCounter, 58 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:41,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1155 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2024-11-02 12:29:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-02 12:29:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-11-02 12:29:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 343 states have (on average 1.3556851311953353) internal successors, (465), 353 states have internal predecessors, (465), 136 states have call successors, (136), 47 states have call predecessors, (136), 46 states have return successors, (135), 130 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-02 12:29:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 736 transitions. [2024-11-02 12:29:42,210 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 736 transitions. Word has length 17 [2024-11-02 12:29:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:42,211 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 736 transitions. [2024-11-02 12:29:42,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:29:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 736 transitions. [2024-11-02 12:29:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-02 12:29:42,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:42,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:42,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:29:42,214 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:42,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:42,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1132832244, now seen corresponding path program 1 times [2024-11-02 12:29:42,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:42,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40776369] [2024-11-02 12:29:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:42,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:29:43,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:43,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40776369] [2024-11-02 12:29:43,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40776369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:43,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:29:43,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:29:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030296104] [2024-11-02 12:29:43,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:43,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:43,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:43,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:43,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:29:43,557 INFO L87 Difference]: Start difference. First operand 526 states and 736 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:29:45,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:29:47,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:29:48,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:48,851 INFO L93 Difference]: Finished difference Result 1065 states and 1500 transitions. [2024-11-02 12:29:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:48,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-02 12:29:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:48,865 INFO L225 Difference]: With dead ends: 1065 [2024-11-02 12:29:48,866 INFO L226 Difference]: Without dead ends: 550 [2024-11-02 12:29:48,872 INFO L431 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 [2024-11-02 12:29:48,873 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 14 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:48,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1123 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2024-11-02 12:29:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-02 12:29:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 530. [2024-11-02 12:29:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 347 states have (on average 1.3573487031700289) internal successors, (471), 357 states have internal predecessors, (471), 136 states have call successors, (136), 47 states have call predecessors, (136), 46 states have return successors, (135), 130 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-02 12:29:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 742 transitions. [2024-11-02 12:29:48,926 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 742 transitions. Word has length 34 [2024-11-02 12:29:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:48,926 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 742 transitions. [2024-11-02 12:29:48,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:29:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 742 transitions. [2024-11-02 12:29:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:29:48,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:48,928 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:48,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:29:48,929 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:48,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:48,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1006920110, now seen corresponding path program 1 times [2024-11-02 12:29:48,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:48,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243811694] [2024-11-02 12:29:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:48,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:29:50,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243811694] [2024-11-02 12:29:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243811694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686268747] [2024-11-02 12:29:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:50,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:50,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:50,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:50,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:29:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:51,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:29:51,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:29:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:29:51,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:29:51,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686268747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:29:51,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:29:51,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-02 12:29:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336838712] [2024-11-02 12:29:51,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:29:51,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:29:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:29:51,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:29:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:51,493 INFO L87 Difference]: Start difference. First operand 530 states and 742 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:29:53,515 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 [] [2024-11-02 12:29:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:29:54,954 INFO L93 Difference]: Finished difference Result 1088 states and 1533 transitions. [2024-11-02 12:29:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:29:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-02 12:29:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:29:54,961 INFO L225 Difference]: With dead ends: 1088 [2024-11-02 12:29:54,963 INFO L226 Difference]: Without dead ends: 569 [2024-11-02 12:29:54,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:29:54,967 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 55 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:29:54,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1112 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 240 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2024-11-02 12:29:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-02 12:29:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-02 12:29:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 384 states have (on average 1.375) internal successors, (528), 394 states have internal predecessors, (528), 137 states have call successors, (137), 48 states have call predecessors, (137), 47 states have return successors, (136), 131 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-02 12:29:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 801 transitions. [2024-11-02 12:29:55,026 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 801 transitions. Word has length 35 [2024-11-02 12:29:55,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:29:55,026 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 801 transitions. [2024-11-02 12:29:55,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:29:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 801 transitions. [2024-11-02 12:29:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:29:55,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:29:55,030 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:29:55,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:29:55,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:55,233 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:29:55,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:29:55,234 INFO L85 PathProgramCache]: Analyzing trace with hash 593136659, now seen corresponding path program 1 times [2024-11-02 12:29:55,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:29:55,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836487961] [2024-11-02 12:29:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:55,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:29:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:29:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 12:29:56,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:29:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836487961] [2024-11-02 12:29:56,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836487961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:29:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97131401] [2024-11-02 12:29:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:29:56,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:29:56,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:29:56,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:29:56,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302e0032-88b6-43d0-beba-9f9ecf1b9412/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process