./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 9bd2c7ff 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_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/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_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c9ee75e44352b6ea6b091abc908af4681506ed391b6529699b0d4480d6bf973b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:49:00,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:49:00,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:49:00,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:49:00,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:49:00,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:49:00,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:49:00,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:49:00,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:49:00,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:49:00,772 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:49:00,772 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:49:00,773 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:49:00,775 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:49:00,775 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:49:00,776 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:49:00,777 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:49:00,777 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:49:00,778 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:49:00,778 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:49:00,779 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:49:00,779 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:49:00,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:49:00,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:49:00,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:49:00,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:49:00,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:49:00,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:49:00,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:49:00,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:49:00,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:49:00,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:49:00,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:49:00,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:00,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:49:00,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:49:00,799 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:49:00,799 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:49:00,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:49:00,800 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:49:00,800 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:49:00,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:49:00,801 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_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ee75e44352b6ea6b091abc908af4681506ed391b6529699b0d4480d6bf973b [2023-11-19 04:49:01,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:49:01,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:49:01,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:49:01,176 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:49:01,176 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:49:01,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/../../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 [2023-11-19 04:49:04,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:49:05,402 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:49:05,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/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 [2023-11-19 04:49:05,441 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/data/b606b2608/0cfb25eb304042b0bee03e747718f715/FLAG3d4189f6b [2023-11-19 04:49:05,461 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/data/b606b2608/0cfb25eb304042b0bee03e747718f715 [2023-11-19 04:49:05,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:49:05,469 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:49:05,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:05,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:49:05,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:49:05,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:05" (1/1) ... [2023-11-19 04:49:05,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27839d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:05, skipping insertion in model container [2023-11-19 04:49:05,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:05" (1/1) ... [2023-11-19 04:49:05,585 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:49:05,980 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2550] [2023-11-19 04:49:05,981 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] [2023-11-19 04:49:06,103 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_9e77346e-d6fd-4ffa-bd68-544ad85146bf/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] [2023-11-19 04:49:06,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:49:06,624 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:49:06,798 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2550] [2023-11-19 04:49:06,799 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] [2023-11-19 04:49:06,802 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] [2023-11-19 04:49:06,808 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] [2023-11-19 04:49:06,813 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] [2023-11-19 04:49:06,814 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] [2023-11-19 04:49:06,857 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] [2023-11-19 04:49:06,858 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] [2023-11-19 04:49:06,859 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] [2023-11-19 04:49:06,860 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] [2023-11-19 04:49:06,861 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] [2023-11-19 04:49:06,862 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] [2023-11-19 04:49:06,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [2810] [2023-11-19 04:49:06,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [2818] [2023-11-19 04:49:06,869 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_9e77346e-d6fd-4ffa-bd68-544ad85146bf/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] [2023-11-19 04:49:07,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:49:07,074 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:49:07,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07 WrapperNode [2023-11-19 04:49:07,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:07,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:49:07,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:49:07,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:49:07,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,299 INFO L138 Inliner]: procedures = 118, calls = 677, calls flagged for inlining = 40, calls inlined = 38, statements flattened = 2375 [2023-11-19 04:49:07,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:49:07,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:49:07,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:49:07,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:49:07,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,440 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:49:07,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:49:07,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:49:07,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:49:07,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (1/1) ... [2023-11-19 04:49:07,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:07,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:07,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:49:07,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:49:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2023-11-19 04:49:07,685 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2023-11-19 04:49:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 04:49:07,686 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 04:49:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2023-11-19 04:49:07,687 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2023-11-19 04:49:07,687 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 04:49:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 04:49:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2023-11-19 04:49:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2023-11-19 04:49:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:49:07,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:49:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:49:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2023-11-19 04:49:07,691 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2023-11-19 04:49:07,693 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2023-11-19 04:49:07,694 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2023-11-19 04:49:07,694 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:49:07,694 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:49:07,695 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-19 04:49:07,695 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-19 04:49:07,695 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2023-11-19 04:49:07,695 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2023-11-19 04:49:07,696 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2023-11-19 04:49:07,696 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2023-11-19 04:49:07,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:49:07,696 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2023-11-19 04:49:07,696 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2023-11-19 04:49:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2023-11-19 04:49:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2023-11-19 04:49:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2023-11-19 04:49:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2023-11-19 04:49:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:49:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:49:07,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:49:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:49:07,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:49:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:49:07,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:49:07,699 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2023-11-19 04:49:07,699 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2023-11-19 04:49:07,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:49:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2023-11-19 04:49:07,700 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2023-11-19 04:49:07,701 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 04:49:07,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 04:49:07,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:49:07,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:49:07,703 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-19 04:49:07,703 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-19 04:49:07,704 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-19 04:49:07,704 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-19 04:49:07,705 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:49:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:49:07,705 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2023-11-19 04:49:07,705 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2023-11-19 04:49:07,705 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2023-11-19 04:49:07,706 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2023-11-19 04:49:07,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:49:07,707 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2023-11-19 04:49:07,708 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2023-11-19 04:49:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2023-11-19 04:49:07,708 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2023-11-19 04:49:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2023-11-19 04:49:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2023-11-19 04:49:07,709 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2023-11-19 04:49:07,709 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2023-11-19 04:49:07,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:49:07,710 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-19 04:49:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-19 04:49:07,710 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2023-11-19 04:49:07,710 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2023-11-19 04:49:07,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:49:07,712 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-19 04:49:07,712 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-19 04:49:07,712 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2023-11-19 04:49:07,712 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2023-11-19 04:49:07,713 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2023-11-19 04:49:07,713 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2023-11-19 04:49:07,713 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:49:07,713 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:49:07,714 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2023-11-19 04:49:07,714 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2023-11-19 04:49:07,714 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 04:49:07,714 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 04:49:07,714 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-19 04:49:07,715 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-19 04:49:07,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:49:07,715 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2023-11-19 04:49:07,715 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2023-11-19 04:49:07,715 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-19 04:49:07,716 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-19 04:49:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2023-11-19 04:49:07,716 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2023-11-19 04:49:07,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 04:49:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 04:49:07,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:49:07,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:49:07,718 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2023-11-19 04:49:07,718 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2023-11-19 04:49:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-19 04:49:07,719 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-19 04:49:08,285 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:49:08,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:49:08,679 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:49:11,120 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:49:13,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:49:13,379 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:49:13,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:13 BoogieIcfgContainer [2023-11-19 04:49:13,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:49:13,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:49:13,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:49:13,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:49:13,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:49:05" (1/3) ... [2023-11-19 04:49:13,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b139837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:13, skipping insertion in model container [2023-11-19 04:49:13,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:07" (2/3) ... [2023-11-19 04:49:13,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b139837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:13, skipping insertion in model container [2023-11-19 04:49:13,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:13" (3/3) ... [2023-11-19 04:49:13,401 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 [2023-11-19 04:49:13,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:49:13,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:49:13,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:49:13,546 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;@3195a54b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:49:13,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:49:13,555 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) [2023-11-19 04:49:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:49:13,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:13,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:13,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:49:13,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash 719369042, now seen corresponding path program 1 times [2023-11-19 04:49:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:13,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106486185] [2023-11-19 04:49:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:14,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:14,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106486185] [2023-11-19 04:49:14,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106486185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:14,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:14,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:49:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939725755] [2023-11-19 04:49:14,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:14,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:14,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:14,191 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) [2023-11-19 04:49:15,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:15,242 INFO L93 Difference]: Finished difference Result 1043 states and 1477 transitions. [2023-11-19 04:49:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:15,245 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 [2023-11-19 04:49:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:15,269 INFO L225 Difference]: With dead ends: 1043 [2023-11-19 04:49:15,270 INFO L226 Difference]: Without dead ends: 527 [2023-11-19 04:49:15,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:15,286 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 58 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2023-11-19 04:49:15,287 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] [2023-11-19 04:49:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-19 04:49:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2023-11-19 04:49:15,407 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) [2023-11-19 04:49:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 737 transitions. [2023-11-19 04:49:15,417 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 737 transitions. Word has length 17 [2023-11-19 04:49:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:15,418 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 737 transitions. [2023-11-19 04:49:15,418 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) [2023-11-19 04:49:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 737 transitions. [2023-11-19 04:49:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 04:49:15,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:15,422 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] [2023-11-19 04:49:15,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:49:15,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:49:15,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash -707076450, now seen corresponding path program 1 times [2023-11-19 04:49:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:15,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469276260] [2023-11-19 04:49:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:49:15,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:15,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469276260] [2023-11-19 04:49:15,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469276260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:15,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:15,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:49:15,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40567428] [2023-11-19 04:49:15,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:15,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:15,780 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) [2023-11-19 04:49:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:16,564 INFO L93 Difference]: Finished difference Result 1067 states and 1502 transitions. [2023-11-19 04:49:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:16,566 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 [2023-11-19 04:49:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:16,573 INFO L225 Difference]: With dead ends: 1067 [2023-11-19 04:49:16,574 INFO L226 Difference]: Without dead ends: 551 [2023-11-19 04:49:16,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:16,581 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 [2023-11-19 04:49:16,582 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] [2023-11-19 04:49:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-19 04:49:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 531. [2023-11-19 04:49:16,630 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) [2023-11-19 04:49:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 743 transitions. [2023-11-19 04:49:16,637 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 743 transitions. Word has length 34 [2023-11-19 04:49:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:16,637 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 743 transitions. [2023-11-19 04:49:16,638 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) [2023-11-19 04:49:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 743 transitions. [2023-11-19 04:49:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 04:49:16,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:16,640 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] [2023-11-19 04:49:16,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:49:16,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:49:16,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash 686970094, now seen corresponding path program 1 times [2023-11-19 04:49:16,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:16,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409792752] [2023-11-19 04:49:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:16,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:49:16,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:16,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409792752] [2023-11-19 04:49:16,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409792752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:49:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559031211] [2023-11-19 04:49:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:16,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:16,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:16,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:16,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:49:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:17,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:49:17,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:49:17,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:17,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559031211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:17,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:49:17,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-19 04:49:17,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947429404] [2023-11-19 04:49:17,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:17,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:17,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:17,482 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) [2023-11-19 04:49:18,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:18,305 INFO L93 Difference]: Finished difference Result 1090 states and 1535 transitions. [2023-11-19 04:49:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:18,307 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 [2023-11-19 04:49:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:18,312 INFO L225 Difference]: With dead ends: 1090 [2023-11-19 04:49:18,313 INFO L226 Difference]: Without dead ends: 570 [2023-11-19 04:49:18,315 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 [2023-11-19 04:49:18,321 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, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:18,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1114 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 04:49:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-19 04:49:18,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2023-11-19 04:49:18,355 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) [2023-11-19 04:49:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 802 transitions. [2023-11-19 04:49:18,361 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 802 transitions. Word has length 35 [2023-11-19 04:49:18,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:18,361 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 802 transitions. [2023-11-19 04:49:18,362 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) [2023-11-19 04:49:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 802 transitions. [2023-11-19 04:49:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 04:49:18,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:18,365 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] [2023-11-19 04:49:18,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:18,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:18,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:49:18,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash 37295139, now seen corresponding path program 1 times [2023-11-19 04:49:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591953771] [2023-11-19 04:49:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:18,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:49:18,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591953771] [2023-11-19 04:49:18,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591953771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:49:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140805068] [2023-11-19 04:49:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:18,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:18,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:18,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:18,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e77346e-d6fd-4ffa-bd68-544ad85146bf/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:49:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:19,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:19,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:49:19,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:49:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140805068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310069585] [2023-11-19 04:49:19,374 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-19 04:49:19,374 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:19,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:19,385 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:19,385 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs