./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/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_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c9ee75e44352b6ea6b091abc908af4681506ed391b6529699b0d4480d6bf973b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:27:23,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:27:23,871 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:27:23,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:27:23,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:27:23,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:27:23,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:27:23,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:27:23,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:27:23,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:27:23,938 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:27:23,938 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:27:23,939 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:27:23,940 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:27:23,941 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:27:23,941 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:27:23,941 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:27:23,942 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:27:23,942 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:27:23,943 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:27:23,943 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:27:23,944 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:27:23,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:27:23,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:27:23,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:27:23,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:27:23,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:27:23,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:27:23,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:27:23,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:27:23,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:27:23,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:27:23,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:27:23,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:27:23,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:23,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:27:23,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:27:23,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:27:23,950 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:27:23,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:27:23,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:27:23,951 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:27:23,951 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:27:23,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:27:23,952 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_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ee75e44352b6ea6b091abc908af4681506ed391b6529699b0d4480d6bf973b [2023-11-23 21:27:24,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:27:24,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:27:24,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:27:24,407 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:27:24,407 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:27:24,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/../../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 [2023-11-23 21:27:27,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:27:27,998 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:27:27,998 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/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 [2023-11-23 21:27:28,033 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/data/536cdefc5/94e1e6125b9349389f9ce002f370f526/FLAG67503e48c [2023-11-23 21:27:28,049 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/data/536cdefc5/94e1e6125b9349389f9ce002f370f526 [2023-11-23 21:27:28,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:27:28,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:27:28,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:28,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:27:28,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:27:28,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:28" (1/1) ... [2023-11-23 21:27:28,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb82598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:28, skipping insertion in model container [2023-11-23 21:27:28,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:28" (1/1) ... [2023-11-23 21:27:28,169 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:27:28,628 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2550] [2023-11-23 21:27:28,628 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2551-2552] [2023-11-23 21:27:28,825 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_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/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] [2023-11-23 21:27:29,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:29,479 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:27:29,592 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2550] [2023-11-23 21:27:29,592 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2551-2552] [2023-11-23 21:27:29,596 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] [2023-11-23 21:27:29,598 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] [2023-11-23 21:27:29,602 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] [2023-11-23 21:27:29,602 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] [2023-11-23 21:27:29,605 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] [2023-11-23 21:27:29,605 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] [2023-11-23 21:27:29,607 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] [2023-11-23 21:27:29,608 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] [2023-11-23 21:27:29,616 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] [2023-11-23 21:27:29,616 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] [2023-11-23 21:27:29,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [2810] [2023-11-23 21:27:29,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [2818] [2023-11-23 21:27:29,625 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_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/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] [2023-11-23 21:27:29,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:29,999 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:27:30,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30 WrapperNode [2023-11-23 21:27:30,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:30,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:30,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:27:30,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:27:30,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,229 INFO L138 Inliner]: procedures = 118, calls = 677, calls flagged for inlining = 40, calls inlined = 38, statements flattened = 2375 [2023-11-23 21:27:30,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:30,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:27:30,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:27:30,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:27:30,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,413 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:27:30,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:27:30,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:27:30,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:27:30,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (1/1) ... [2023-11-23 21:27:30,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:30,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:30,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:27:30,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:27:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2023-11-23 21:27:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2023-11-23 21:27:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:27:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:27:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2023-11-23 21:27:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2023-11-23 21:27:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:27:30,586 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:27:30,586 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2023-11-23 21:27:30,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2023-11-23 21:27:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:27:30,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:27:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:27:30,590 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2023-11-23 21:27:30,590 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2023-11-23 21:27:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2023-11-23 21:27:30,591 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2023-11-23 21:27:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:27:30,591 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:27:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-23 21:27:30,592 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-23 21:27:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2023-11-23 21:27:30,592 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2023-11-23 21:27:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2023-11-23 21:27:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2023-11-23 21:27:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:27:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2023-11-23 21:27:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2023-11-23 21:27:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2023-11-23 21:27:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2023-11-23 21:27:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:27:30,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:27:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:27:30,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:27:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:27:30,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:27:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:27:30,595 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:27:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:27:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2023-11-23 21:27:30,595 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2023-11-23 21:27:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:27:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2023-11-23 21:27:30,596 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2023-11-23 21:27:30,597 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:27:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:27:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:27:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:27:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-23 21:27:30,599 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-23 21:27:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-23 21:27:30,599 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-23 21:27:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:27:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:27:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2023-11-23 21:27:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2023-11-23 21:27:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2023-11-23 21:27:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2023-11-23 21:27:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:27:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2023-11-23 21:27:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2023-11-23 21:27:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2023-11-23 21:27:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2023-11-23 21:27:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2023-11-23 21:27:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2023-11-23 21:27:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2023-11-23 21:27:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2023-11-23 21:27:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:27:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-23 21:27:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-23 21:27:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2023-11-23 21:27:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2023-11-23 21:27:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:27:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-23 21:27:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-23 21:27:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2023-11-23 21:27:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2023-11-23 21:27:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2023-11-23 21:27:30,605 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2023-11-23 21:27:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:27:30,605 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:27:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2023-11-23 21:27:30,605 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2023-11-23 21:27:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:27:30,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:27:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:27:30,606 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:27:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:27:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2023-11-23 21:27:30,606 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2023-11-23 21:27:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-23 21:27:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-23 21:27:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2023-11-23 21:27:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2023-11-23 21:27:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:27:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:27:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:27:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:27:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2023-11-23 21:27:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2023-11-23 21:27:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-23 21:27:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-23 21:27:31,049 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:27:31,053 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:27:31,311 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:27:33,326 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:27:35,173 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:27:35,173 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:27:35,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:35 BoogieIcfgContainer [2023-11-23 21:27:35,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:27:35,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:27:35,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:27:35,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:27:35,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:27:28" (1/3) ... [2023-11-23 21:27:35,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5924b457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:35, skipping insertion in model container [2023-11-23 21:27:35,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:30" (2/3) ... [2023-11-23 21:27:35,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5924b457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:35, skipping insertion in model container [2023-11-23 21:27:35,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:35" (3/3) ... [2023-11-23 21:27:35,191 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 [2023-11-23 21:27:35,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:27:35,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:27:35,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:27:35,333 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;@48df4afc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:27:35,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:27:35,347 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) [2023-11-23 21:27:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:27:35,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:35,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:35,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:35,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1800815112, now seen corresponding path program 1 times [2023-11-23 21:27:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:35,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923764757] [2023-11-23 21:27:35,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:27:35,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:35,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923764757] [2023-11-23 21:27:35,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923764757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:35,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:35,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:35,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395352269] [2023-11-23 21:27:35,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:35,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:36,014 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) [2023-11-23 21:27:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:37,068 INFO L93 Difference]: Finished difference Result 1043 states and 1477 transitions. [2023-11-23 21:27:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:37,073 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 [2023-11-23 21:27:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:37,097 INFO L225 Difference]: With dead ends: 1043 [2023-11-23 21:27:37,098 INFO L226 Difference]: Without dead ends: 527 [2023-11-23 21:27:37,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:37,114 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 [2023-11-23 21:27:37,115 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] [2023-11-23 21:27:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-23 21:27:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2023-11-23 21:27:37,226 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) [2023-11-23 21:27:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 737 transitions. [2023-11-23 21:27:37,236 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 737 transitions. Word has length 17 [2023-11-23 21:27:37,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:37,237 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 737 transitions. [2023-11-23 21:27:37,237 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) [2023-11-23 21:27:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 737 transitions. [2023-11-23 21:27:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:27:37,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:37,240 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] [2023-11-23 21:27:37,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:27:37,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:37,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:37,242 INFO L85 PathProgramCache]: Analyzing trace with hash 40678165, now seen corresponding path program 1 times [2023-11-23 21:27:37,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335487193] [2023-11-23 21:27:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:27:37,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335487193] [2023-11-23 21:27:37,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335487193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:37,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:37,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424283198] [2023-11-23 21:27:37,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:37,467 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) [2023-11-23 21:27:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:38,287 INFO L93 Difference]: Finished difference Result 1067 states and 1502 transitions. [2023-11-23 21:27:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:38,288 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 [2023-11-23 21:27:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:38,294 INFO L225 Difference]: With dead ends: 1067 [2023-11-23 21:27:38,294 INFO L226 Difference]: Without dead ends: 551 [2023-11-23 21:27:38,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:38,298 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 14 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2023-11-23 21:27:38,299 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] [2023-11-23 21:27:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-23 21:27:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 531. [2023-11-23 21:27:38,367 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) [2023-11-23 21:27:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 743 transitions. [2023-11-23 21:27:38,384 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 743 transitions. Word has length 34 [2023-11-23 21:27:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:38,384 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 743 transitions. [2023-11-23 21:27:38,385 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) [2023-11-23 21:27:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 743 transitions. [2023-11-23 21:27:38,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:27:38,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:38,387 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] [2023-11-23 21:27:38,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:27:38,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:38,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash -247857187, now seen corresponding path program 1 times [2023-11-23 21:27:38,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:38,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992415291] [2023-11-23 21:27:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:38,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:27:38,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:38,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992415291] [2023-11-23 21:27:38,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992415291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:27:38,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671759976] [2023-11-23 21:27:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:38,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:38,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:27:38,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:27:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:39,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:27:39,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:27:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:27:39,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:27:39,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671759976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:39,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:27:39,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 21:27:39,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171706666] [2023-11-23 21:27:39,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:39,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:39,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:27:39,295 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) [2023-11-23 21:27:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:40,067 INFO L93 Difference]: Finished difference Result 1090 states and 1535 transitions. [2023-11-23 21:27:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:40,068 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 [2023-11-23 21:27:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:40,073 INFO L225 Difference]: With dead ends: 1090 [2023-11-23 21:27:40,074 INFO L226 Difference]: Without dead ends: 570 [2023-11-23 21:27:40,076 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 [2023-11-23 21:27:40,077 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 55 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2023-11-23 21:27:40,077 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] [2023-11-23 21:27:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-23 21:27:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2023-11-23 21:27:40,122 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) [2023-11-23 21:27:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 802 transitions. [2023-11-23 21:27:40,129 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 802 transitions. Word has length 35 [2023-11-23 21:27:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:40,130 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 802 transitions. [2023-11-23 21:27:40,131 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) [2023-11-23 21:27:40,132 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 802 transitions. [2023-11-23 21:27:40,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:27:40,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:40,145 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] [2023-11-23 21:27:40,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:27:40,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:40,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:40,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash 790040148, now seen corresponding path program 1 times [2023-11-23 21:27:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439017112] [2023-11-23 21:27:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:27:40,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439017112] [2023-11-23 21:27:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439017112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:27:40,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112911044] [2023-11-23 21:27:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:40,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:40,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:40,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:27:40,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abed6c8e-3a07-43f4-a212-bfa5ff838f8b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:27:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:40,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:27:40,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:27:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:27:40,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:27:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:27:41,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112911044] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:27:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1342266523] [2023-11-23 21:27:41,061 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-23 21:27:41,061 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:27:41,065 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:27:41,072 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:27:41,072 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs