./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 cf1a7837 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_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/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_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/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_40523504-251d-4b8a-955f-c789912a239f/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_40523504-251d-4b8a-955f-c789912a239f/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 c9ee75e44352b6ea6b091abc908af4681506ed391b6529699b0d4480d6bf973b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:36,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:36,692 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 01:03:36,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:36,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:36,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:36,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:36,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:36,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:36,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:36,734 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:36,735 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:36,735 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:36,736 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:36,737 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:36,738 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:36,738 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:36,739 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:36,740 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:36,740 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:36,741 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:36,742 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:36,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:36,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:03:36,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:36,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:36,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:03:36,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:36,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:03:36,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:03:36,747 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:36,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:36,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:36,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:36,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:36,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:36,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:03:36,752 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:36,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:36,753 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:03:36,754 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:36,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:36,755 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_40523504-251d-4b8a-955f-c789912a239f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ee75e44352b6ea6b091abc908af4681506ed391b6529699b0d4480d6bf973b [2023-11-12 01:03:37,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:37,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:37,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:37,134 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:37,135 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:37,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/../../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 [2023-11-12 01:03:40,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:40,786 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:40,790 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/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 [2023-11-12 01:03:40,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/data/25f48205c/c2869bdd5b08457a9264ee8e4c68cd41/FLAG0444c13cf [2023-11-12 01:03:40,855 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/data/25f48205c/c2869bdd5b08457a9264ee8e4c68cd41 [2023-11-12 01:03:40,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:40,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:40,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:40,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:40,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:40,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:40,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18df8f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:40, skipping insertion in model container [2023-11-12 01:03:40,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:40" (1/1) ... [2023-11-12 01:03:41,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:41,558 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2550] [2023-11-12 01:03:41,564 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2551-2552] [2023-11-12 01:03:41,767 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_40523504-251d-4b8a-955f-c789912a239f/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] [2023-11-12 01:03:42,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:42,428 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:42,520 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2550] [2023-11-12 01:03:42,520 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2551-2552] [2023-11-12 01:03:42,523 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] [2023-11-12 01:03:42,526 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] [2023-11-12 01:03:42,530 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] [2023-11-12 01:03:42,531 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] [2023-11-12 01:03:42,533 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] [2023-11-12 01:03:42,534 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] [2023-11-12 01:03:42,540 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] [2023-11-12 01:03:42,540 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] [2023-11-12 01:03:42,551 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] [2023-11-12 01:03:42,551 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] [2023-11-12 01:03:42,553 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [2810] [2023-11-12 01:03:42,554 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [2818] [2023-11-12 01:03:42,557 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_40523504-251d-4b8a-955f-c789912a239f/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] [2023-11-12 01:03:42,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:42,808 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:42,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42 WrapperNode [2023-11-12 01:03:42,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:42,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:42,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:42,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:42,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:42,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,045 INFO L138 Inliner]: procedures = 118, calls = 677, calls flagged for inlining = 40, calls inlined = 38, statements flattened = 2375 [2023-11-12 01:03:43,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:43,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:43,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:43,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:43,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:43,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:43,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:43,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:43,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (1/1) ... [2023-11-12 01:03:43,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:43,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:43,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:43,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2023-11-12 01:03:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2023-11-12 01:03:43,383 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 01:03:43,383 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 01:03:43,383 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2023-11-12 01:03:43,384 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2023-11-12 01:03:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-12 01:03:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-12 01:03:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2023-11-12 01:03:43,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2023-11-12 01:03:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 01:03:43,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 01:03:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:03:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2023-11-12 01:03:43,388 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2023-11-12 01:03:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2023-11-12 01:03:43,391 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2023-11-12 01:03:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 01:03:43,391 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 01:03:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-12 01:03:43,392 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-12 01:03:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2023-11-12 01:03:43,392 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2023-11-12 01:03:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2023-11-12 01:03:43,392 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2023-11-12 01:03:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:03:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2023-11-12 01:03:43,393 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2023-11-12 01:03:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2023-11-12 01:03:43,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2023-11-12 01:03:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2023-11-12 01:03:43,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2023-11-12 01:03:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 01:03:43,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 01:03:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 01:03:43,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 01:03:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 01:03:43,395 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 01:03:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:03:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2023-11-12 01:03:43,396 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2023-11-12 01:03:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2023-11-12 01:03:43,397 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2023-11-12 01:03:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-12 01:03:43,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-12 01:03:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:03:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:03:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-12 01:03:43,398 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-12 01:03:43,398 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-12 01:03:43,399 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-12 01:03:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 01:03:43,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 01:03:43,399 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2023-11-12 01:03:43,400 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2023-11-12 01:03:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2023-11-12 01:03:43,400 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2023-11-12 01:03:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:03:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2023-11-12 01:03:43,401 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2023-11-12 01:03:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2023-11-12 01:03:43,401 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2023-11-12 01:03:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2023-11-12 01:03:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2023-11-12 01:03:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2023-11-12 01:03:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2023-11-12 01:03:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:03:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-12 01:03:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-12 01:03:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2023-11-12 01:03:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2023-11-12 01:03:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 01:03:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-12 01:03:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-12 01:03:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2023-11-12 01:03:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2023-11-12 01:03:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2023-11-12 01:03:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2023-11-12 01:03:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 01:03:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 01:03:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2023-11-12 01:03:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2023-11-12 01:03:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 01:03:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 01:03:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-12 01:03:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-12 01:03:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:03:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2023-11-12 01:03:43,407 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2023-11-12 01:03:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-12 01:03:43,407 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-12 01:03:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2023-11-12 01:03:43,408 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2023-11-12 01:03:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 01:03:43,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 01:03:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2023-11-12 01:03:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2023-11-12 01:03:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-12 01:03:43,410 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-12 01:03:44,037 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:44,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:44,284 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 01:03:46,481 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:48,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:48,374 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 01:03:48,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:48 BoogieIcfgContainer [2023-11-12 01:03:48,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:48,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:48,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:48,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:48,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:40" (1/3) ... [2023-11-12 01:03:48,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c193b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:48, skipping insertion in model container [2023-11-12 01:03:48,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:42" (2/3) ... [2023-11-12 01:03:48,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c193b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:48, skipping insertion in model container [2023-11-12 01:03:48,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:48" (3/3) ... [2023-11-12 01:03:48,392 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 [2023-11-12 01:03:48,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:48,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:03:48,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:48,515 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;@440652e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:48,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 01:03:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 504 states, 321 states have (on average 1.367601246105919) internal successors, (439), 337 states have internal predecessors, (439), 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) [2023-11-12 01:03:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 01:03:48,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:48,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:48,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:48,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash 719369042, now seen corresponding path program 1 times [2023-11-12 01:03:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:48,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373358152] [2023-11-12 01:03:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:48,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:49,150 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 01:03:49,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373358152] [2023-11-12 01:03:49,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373358152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:49,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:49,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:49,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989823314] [2023-11-12 01:03:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:49,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:49,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:49,203 INFO L87 Difference]: Start difference. First operand has 504 states, 321 states have (on average 1.367601246105919) internal successors, (439), 337 states have internal predecessors, (439), 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) [2023-11-12 01:03:50,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:50,231 INFO L93 Difference]: Finished difference Result 1043 states and 1477 transitions. [2023-11-12 01:03:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:50,234 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 [2023-11-12 01:03:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:50,263 INFO L225 Difference]: With dead ends: 1043 [2023-11-12 01:03:50,263 INFO L226 Difference]: Without dead ends: 527 [2023-11-12 01:03:50,276 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 01:03:50,280 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 58 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:50,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1157 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 01:03:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-12 01:03:50,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2023-11-12 01:03:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 344 states have (on average 1.3546511627906976) internal successors, (466), 354 states have internal predecessors, (466), 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) [2023-11-12 01:03:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 737 transitions. [2023-11-12 01:03:50,380 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 737 transitions. Word has length 17 [2023-11-12 01:03:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:50,380 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 737 transitions. [2023-11-12 01:03:50,381 INFO L496 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) [2023-11-12 01:03:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 737 transitions. [2023-11-12 01:03:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 01:03:50,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:50,383 INFO L195 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] [2023-11-12 01:03:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:03:50,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:50,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash -707076450, now seen corresponding path program 1 times [2023-11-12 01:03:50,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175782285] [2023-11-12 01:03:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:50,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 01:03:50,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:50,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175782285] [2023-11-12 01:03:50,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175782285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:50,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:50,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:50,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220892098] [2023-11-12 01:03:50,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:50,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:50,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:50,607 INFO L87 Difference]: Start difference. First operand 527 states and 737 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) [2023-11-12 01:03:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:51,332 INFO L93 Difference]: Finished difference Result 1067 states and 1502 transitions. [2023-11-12 01:03:51,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:51,334 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 [2023-11-12 01:03:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:51,339 INFO L225 Difference]: With dead ends: 1067 [2023-11-12 01:03:51,339 INFO L226 Difference]: Without dead ends: 551 [2023-11-12 01:03:51,341 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 01:03:51,343 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 14 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:51,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1125 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 01:03:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-12 01:03:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 531. [2023-11-12 01:03:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 348 states have (on average 1.3563218390804597) internal successors, (472), 358 states have internal predecessors, (472), 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) [2023-11-12 01:03:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 743 transitions. [2023-11-12 01:03:51,403 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 743 transitions. Word has length 34 [2023-11-12 01:03:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:51,404 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 743 transitions. [2023-11-12 01:03:51,404 INFO L496 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) [2023-11-12 01:03:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 743 transitions. [2023-11-12 01:03:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-12 01:03:51,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:51,407 INFO L195 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] [2023-11-12 01:03:51,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:03:51,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:51,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash 686970094, now seen corresponding path program 1 times [2023-11-12 01:03:51,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326043840] [2023-11-12 01:03:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:51,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 01:03:51,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:51,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326043840] [2023-11-12 01:03:51,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326043840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:51,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814740006] [2023-11-12 01:03:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:51,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:51,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:51,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:51,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:03:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:52,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:03:52,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 01:03:52,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:52,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814740006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:52,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:03:52,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-12 01:03:52,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506407087] [2023-11-12 01:03:52,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:52,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:52,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:52,215 INFO L87 Difference]: Start difference. First operand 531 states and 743 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) [2023-11-12 01:03:53,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:53,025 INFO L93 Difference]: Finished difference Result 1090 states and 1535 transitions. [2023-11-12 01:03:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:53,026 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 [2023-11-12 01:03:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:53,032 INFO L225 Difference]: With dead ends: 1090 [2023-11-12 01:03:53,032 INFO L226 Difference]: Without dead ends: 570 [2023-11-12 01:03:53,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 01:03:53,036 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 55 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:53,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1114 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 01:03:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-12 01:03:53,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2023-11-12 01:03:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 385 states have (on average 1.374025974025974) internal successors, (529), 395 states have internal predecessors, (529), 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) [2023-11-12 01:03:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 802 transitions. [2023-11-12 01:03:53,107 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 802 transitions. Word has length 35 [2023-11-12 01:03:53,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:53,108 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 802 transitions. [2023-11-12 01:03:53,109 INFO L496 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) [2023-11-12 01:03:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 802 transitions. [2023-11-12 01:03:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-12 01:03:53,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:53,120 INFO L195 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] [2023-11-12 01:03:53,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:53,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:53,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:03:53,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash 37295139, now seen corresponding path program 1 times [2023-11-12 01:03:53,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:53,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206258819] [2023-11-12 01:03:53,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:53,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 01:03:53,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:53,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206258819] [2023-11-12 01:03:53,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206258819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971796416] [2023-11-12 01:03:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:53,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:53,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:53,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:53,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40523504-251d-4b8a-955f-c789912a239f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:03:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:54,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:54,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 01:03:54,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 01:03:54,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971796416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:54,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [949593401] [2023-11-12 01:03:54,154 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-12 01:03:54,154 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:54,159 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:54,165 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:54,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs