./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E --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 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:11:53,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:11:53,865 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 04:11:53,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:11:53,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:11:53,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:11:53,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:11:53,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:11:53,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:11:53,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:11:53,896 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:11:53,896 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:11:53,896 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:11:53,896 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:11:53,897 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:11:53,897 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:11:53,897 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:11:53,897 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:11:53,897 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:11:53,897 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:11:53,897 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:11:53,897 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:11:53,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:11:53,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:11:53,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:11:53,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:11:53,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:11:53,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:11:53,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:11:53,899 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:11:53,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:11:53,899 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:11:53,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:11:53,899 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:11:53,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:11:53,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:11:53,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:11:53,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:11:53,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:11:53,900 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:11:53,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:11:53,900 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:11:53,900 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:11:53,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:11:53,900 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E 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 -> 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 [2024-11-14 04:11:54,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:11:54,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:11:54,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:11:54,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:11:54,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:11:54,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-14 04:11:56,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:11:56,895 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:11:56,895 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2024-11-14 04:11:56,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/data/9463af709/b70800857b9c46fdbe7a351a8a3ea525/FLAG272dee0a8 [2024-11-14 04:11:56,983 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/data/9463af709/b70800857b9c46fdbe7a351a8a3ea525 [2024-11-14 04:11:56,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:11:56,991 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:11:56,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:11:56,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:11:56,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:11:57,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:11:56" (1/1) ... [2024-11-14 04:11:57,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794cb40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:57, skipping insertion in model container [2024-11-14 04:11:57,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:11:56" (1/1) ... [2024-11-14 04:11:57,158 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:11:58,885 WARN L250 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_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2024-11-14 04:11:58,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:11:58,988 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:11:59,172 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"); [5698] [2024-11-14 04:11:59,174 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; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5705] [2024-11-14 04:11:59,189 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" (831), "i" (12UL)); [5838-5839] [2024-11-14 04:11:59,189 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" (43UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5844-5846] [2024-11-14 04:11:59,191 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" (836), "i" (12UL)); [5868-5869] [2024-11-14 04:11:59,191 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.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [5874-5876] [2024-11-14 04:11:59,193 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" (841), "i" (12UL)); [5897-5898] [2024-11-14 04:11:59,193 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.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5903-5905] [2024-11-14 04:11:59,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5969] [2024-11-14 04:11:59,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5977] [2024-11-14 04:11:59,198 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [5984] [2024-11-14 04:11:59,198 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [5992] [2024-11-14 04:11:59,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [6000] [2024-11-14 04:11:59,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsl": "+S" (addr), "+c" (count): "d" (port)); [6007] [2024-11-14 04:11:59,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insl": "+D" (addr), "+c" (count): "d" (port)); [6014] [2024-11-14 04:11:59,397 WARN L250 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_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2024-11-14 04:11:59,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:11:59,585 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:11:59,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59 WrapperNode [2024-11-14 04:11:59,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:11:59,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:11:59,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:11:59,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:11:59,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:11:59,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:11:59,894 INFO L138 Inliner]: procedures = 178, calls = 1239, calls flagged for inlining = 86, calls inlined = 83, statements flattened = 3111 [2024-11-14 04:11:59,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:11:59,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:11:59,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:11:59,899 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:11:59,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:11:59,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:11:59,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:11:59,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:12:00,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:12:00,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:12:00,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:12:00,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:12:00,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:12:00,172 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:12:00,172 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:12:00,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:12:00,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (1/1) ... [2024-11-14 04:12:00,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:12:00,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:12:00,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:12:00,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0ff2bc-07fa-481c-be7f-b2ee9d408917/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:12:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 04:12:00,259 INFO L130 BoogieDeclarations]: Found specification of procedure el3_config [2024-11-14 04:12:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure el3_config [2024-11-14 04:12:00,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 04:12:00,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-14 04:12:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-14 04:12:00,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:12:00,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-14 04:12:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-14 04:12:00,260 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2024-11-14 04:12:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2024-11-14 04:12:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2024-11-14 04:12:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2024-11-14 04:12:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-11-14 04:12:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-11-14 04:12:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-14 04:12:00,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-14 04:12:00,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 04:12:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 04:12:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-11-14 04:12:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-11-14 04:12:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2024-11-14 04:12:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2024-11-14 04:12:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-14 04:12:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-14 04:12:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:12:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2024-11-14 04:12:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2024-11-14 04:12:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-14 04:12:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-14 04:12:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2024-11-14 04:12:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2024-11-14 04:12:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-14 04:12:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-14 04:12:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-14 04:12:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-14 04:12:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 04:12:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 04:12:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-14 04:12:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-14 04:12:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:12:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_reset [2024-11-14 04:12:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_reset [2024-11-14 04:12:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:12:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2024-11-14 04:12:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2024-11-14 04:12:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_dev_present [2024-11-14 04:12:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_dev_present [2024-11-14 04:12:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2024-11-14 04:12:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2024-11-14 04:12:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:12:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:12:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2024-11-14 04:12:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2024-11-14 04:12:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure el3_rx [2024-11-14 04:12:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure el3_rx [2024-11-14 04:12:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2024-11-14 04:12:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2024-11-14 04:12:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:12:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-14 04:12:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-14 04:12:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2024-11-14 04:12:00,274 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2024-11-14 04:12:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_set_xcvr [2024-11-14 04:12:00,274 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_set_xcvr [2024-11-14 04:12:00,274 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_release [2024-11-14 04:12:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_release [2024-11-14 04:12:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2024-11-14 04:12:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2024-11-14 04:12:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2024-11-14 04:12:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2024-11-14 04:12:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2024-11-14 04:12:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2024-11-14 04:12:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure el3_get_stats [2024-11-14 04:12:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure el3_get_stats [2024-11-14 04:12:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-14 04:12:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-14 04:12:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_detach [2024-11-14 04:12:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_detach [2024-11-14 04:12:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_wait_for_completion [2024-11-14 04:12:00,276 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_wait_for_completion [2024-11-14 04:12:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:12:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:12:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2024-11-14 04:12:00,276 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2024-11-14 04:12:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-14 04:12:00,276 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-14 04:12:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-14 04:12:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-14 04:12:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2024-11-14 04:12:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2024-11-14 04:12:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2024-11-14 04:12:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2024-11-14 04:12:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-14 04:12:00,279 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-14 04:12:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2024-11-14 04:12:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2024-11-14 04:12:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-14 04:12:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-14 04:12:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-14 04:12:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-14 04:12:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-14 04:12:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-14 04:12:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-11-14 04:12:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-11-14 04:12:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure pop_tx_status [2024-11-14 04:12:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure pop_tx_status [2024-11-14 04:12:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:12:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2024-11-14 04:12:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2024-11-14 04:12:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:12:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:12:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure el3_tx_timeout [2024-11-14 04:12:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure el3_tx_timeout [2024-11-14 04:12:00,945 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:12:00,948 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:12:02,105 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-14 04:12:12,114 INFO L? ?]: Removed 965 outVars from TransFormulas that were not future-live. [2024-11-14 04:12:12,114 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:12:13,557 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:12:13,557 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:12:13,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:12:13 BoogieIcfgContainer [2024-11-14 04:12:13,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:12:13,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:12:13,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:12:13,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:12:13,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:11:56" (1/3) ... [2024-11-14 04:12:13,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8f27ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:12:13, skipping insertion in model container [2024-11-14 04:12:13,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:11:59" (2/3) ... [2024-11-14 04:12:13,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8f27ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:12:13, skipping insertion in model container [2024-11-14 04:12:13,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:12:13" (3/3) ... [2024-11-14 04:12:13,570 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2024-11-14 04:12:13,588 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:12:13,592 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i that has 51 procedures, 785 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 04:12:13,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:12:13,716 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34f39b42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:12:13,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:12:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 784 states, 464 states have (on average 1.3706896551724137) internal successors, (636), 502 states have internal predecessors, (636), 269 states have call successors, (269), 50 states have call predecessors, (269), 49 states have return successors, (263), 254 states have call predecessors, (263), 263 states have call successors, (263) [2024-11-14 04:12:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-14 04:12:13,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:13,776 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:13,778 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:12:13,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1902715568, now seen corresponding path program 1 times [2024-11-14 04:12:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:13,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650269175] [2024-11-14 04:12:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:13,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-14 04:12:24,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:24,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650269175] [2024-11-14 04:12:24,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650269175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:12:24,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:12:24,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:12:24,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984589882] [2024-11-14 04:12:24,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:12:24,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:12:24,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:12:24,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:12:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:12:24,874 INFO L87 Difference]: Start difference. First operand has 784 states, 464 states have (on average 1.3706896551724137) internal successors, (636), 502 states have internal predecessors, (636), 269 states have call successors, (269), 50 states have call predecessors, (269), 49 states have return successors, (263), 254 states have call predecessors, (263), 263 states have call successors, (263) Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 04:12:26,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:29,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:32,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:36,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:38,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:42,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:44,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:46,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:12:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:12:49,659 INFO L93 Difference]: Finished difference Result 3093 states and 4633 transitions. [2024-11-14 04:12:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:12:49,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 150 [2024-11-14 04:12:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:12:49,709 INFO L225 Difference]: With dead ends: 3093 [2024-11-14 04:12:49,709 INFO L226 Difference]: Without dead ends: 2285 [2024-11-14 04:12:49,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:12:49,729 INFO L432 NwaCegarLoop]: 1056 mSDtfsCounter, 2291 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:12:49,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 3218 Invalid, 980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 966 Invalid, 8 Unknown, 0 Unchecked, 24.4s Time] [2024-11-14 04:12:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2024-11-14 04:12:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2273. [2024-11-14 04:12:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1359 states have (on average 1.3495217071376011) internal successors, (1834), 1443 states have internal predecessors, (1834), 771 states have call successors, (771), 143 states have call predecessors, (771), 142 states have return successors, (770), 745 states have call predecessors, (770), 770 states have call successors, (770) [2024-11-14 04:12:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3375 transitions. [2024-11-14 04:12:50,076 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3375 transitions. Word has length 150 [2024-11-14 04:12:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:12:50,078 INFO L471 AbstractCegarLoop]: Abstraction has 2273 states and 3375 transitions. [2024-11-14 04:12:50,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 04:12:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3375 transitions. [2024-11-14 04:12:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-14 04:12:50,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:50,098 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:50,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:12:50,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:12:50,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1957375305, now seen corresponding path program 1 times [2024-11-14 04:12:50,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:50,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807972434] [2024-11-14 04:12:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-14 04:12:59,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:59,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807972434] [2024-11-14 04:12:59,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807972434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:12:59,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:12:59,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:12:59,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544799059] [2024-11-14 04:12:59,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:12:59,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:12:59,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:12:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:12:59,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:12:59,295 INFO L87 Difference]: Start difference. First operand 2273 states and 3375 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 04:13:01,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:03,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:06,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:12,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:14,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:16,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:18,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:20,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:13:25,926 INFO L93 Difference]: Finished difference Result 9048 states and 13434 transitions. [2024-11-14 04:13:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:13:25,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 151 [2024-11-14 04:13:25,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:13:25,988 INFO L225 Difference]: With dead ends: 9048 [2024-11-14 04:13:25,988 INFO L226 Difference]: Without dead ends: 6787 [2024-11-14 04:13:26,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:13:26,007 INFO L432 NwaCegarLoop]: 1025 mSDtfsCounter, 2840 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 514 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:13:26,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2840 Valid, 2519 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 892 Invalid, 8 Unknown, 0 Unchecked, 26.2s Time] [2024-11-14 04:13:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6787 states. [2024-11-14 04:13:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6787 to 6775. [2024-11-14 04:13:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6775 states, 4059 states have (on average 1.3486080315348608) internal successors, (5474), 4301 states have internal predecessors, (5474), 2291 states have call successors, (2291), 425 states have call predecessors, (2291), 424 states have return successors, (2290), 2221 states have call predecessors, (2290), 2290 states have call successors, (2290) [2024-11-14 04:13:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6775 states to 6775 states and 10055 transitions. [2024-11-14 04:13:26,517 INFO L78 Accepts]: Start accepts. Automaton has 6775 states and 10055 transitions. Word has length 151 [2024-11-14 04:13:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:13:26,519 INFO L471 AbstractCegarLoop]: Abstraction has 6775 states and 10055 transitions. [2024-11-14 04:13:26,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 04:13:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 6775 states and 10055 transitions. [2024-11-14 04:13:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-14 04:13:26,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:13:26,526 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:13:26,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:13:26,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:13:26,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:13:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1655027761, now seen corresponding path program 1 times [2024-11-14 04:13:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:13:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084517212] [2024-11-14 04:13:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:13:26,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:13:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:13:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-14 04:13:35,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:13:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084517212] [2024-11-14 04:13:35,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084517212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:13:35,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:13:35,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:13:35,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512360091] [2024-11-14 04:13:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:13:35,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:13:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:13:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:13:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:13:35,400 INFO L87 Difference]: Start difference. First operand 6775 states and 10055 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 04:13:37,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:39,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:42,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:47,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:49,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:51,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:53,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:13:55,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:00,516 INFO L93 Difference]: Finished difference Result 27044 states and 40130 transitions. [2024-11-14 04:14:00,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:14:00,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 149 [2024-11-14 04:14:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:00,679 INFO L225 Difference]: With dead ends: 27044 [2024-11-14 04:14:00,680 INFO L226 Difference]: Without dead ends: 20281 [2024-11-14 04:14:00,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:00,728 INFO L432 NwaCegarLoop]: 1038 mSDtfsCounter, 2248 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:00,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 3151 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 953 Invalid, 8 Unknown, 0 Unchecked, 24.5s Time] [2024-11-14 04:14:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20281 states. [2024-11-14 04:14:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20281 to 20269. [2024-11-14 04:14:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20269 states, 12159 states have (on average 1.3471502590673574) internal successors, (16380), 12863 states have internal predecessors, (16380), 6839 states have call successors, (6839), 1271 states have call predecessors, (6839), 1270 states have return successors, (6838), 6649 states have call predecessors, (6838), 6838 states have call successors, (6838) [2024-11-14 04:14:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20269 states to 20269 states and 30057 transitions. [2024-11-14 04:14:02,153 INFO L78 Accepts]: Start accepts. Automaton has 20269 states and 30057 transitions. Word has length 149 [2024-11-14 04:14:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:02,155 INFO L471 AbstractCegarLoop]: Abstraction has 20269 states and 30057 transitions. [2024-11-14 04:14:02,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 04:14:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 20269 states and 30057 transitions. [2024-11-14 04:14:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-14 04:14:02,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:02,162 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:02,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:14:02,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:02,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash -452874840, now seen corresponding path program 1 times [2024-11-14 04:14:02,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:14:02,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24925905] [2024-11-14 04:14:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:14:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-14 04:14:10,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:14:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24925905] [2024-11-14 04:14:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24925905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:10,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:10,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:10,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19627425] [2024-11-14 04:14:10,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:10,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:10,310 INFO L87 Difference]: Start difference. First operand 20269 states and 30057 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 04:14:12,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:14,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:17,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:21,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:23,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:25,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:27,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:29,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:36,706 INFO L93 Difference]: Finished difference Result 77592 states and 114866 transitions. [2024-11-14 04:14:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:14:36,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2024-11-14 04:14:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:36,998 INFO L225 Difference]: With dead ends: 77592 [2024-11-14 04:14:36,998 INFO L226 Difference]: Without dead ends: 57335 [2024-11-14 04:14:37,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:37,080 INFO L432 NwaCegarLoop]: 1025 mSDtfsCounter, 2245 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:37,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2245 Valid, 3511 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1012 Invalid, 8 Unknown, 0 Unchecked, 24.8s Time] [2024-11-14 04:14:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57335 states. [2024-11-14 04:14:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57335 to 57269. [2024-11-14 04:14:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57269 states, 34389 states have (on average 1.345721015440984) internal successors, (46278), 36203 states have internal predecessors, (46278), 19183 states have call successors, (19183), 3697 states have call predecessors, (19183), 3696 states have return successors, (19182), 18701 states have call predecessors, (19182), 19182 states have call successors, (19182) [2024-11-14 04:14:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57269 states to 57269 states and 84643 transitions. [2024-11-14 04:14:41,931 INFO L78 Accepts]: Start accepts. Automaton has 57269 states and 84643 transitions. Word has length 152 [2024-11-14 04:14:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:41,931 INFO L471 AbstractCegarLoop]: Abstraction has 57269 states and 84643 transitions. [2024-11-14 04:14:41,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-14 04:14:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 57269 states and 84643 transitions. [2024-11-14 04:14:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-14 04:14:42,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:42,050 INFO L215 NwaCegarLoop]: trace histogram [20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:42,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:14:42,050 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:42,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:42,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1912861175, now seen corresponding path program 1 times [2024-11-14 04:14:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:14:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136999786] [2024-11-14 04:14:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:14:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2024-11-14 04:14:51,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:14:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136999786] [2024-11-14 04:14:51,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136999786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:51,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:51,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:14:51,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982672897] [2024-11-14 04:14:51,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:51,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:14:51,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:51,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:14:51,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:51,634 INFO L87 Difference]: Start difference. First operand 57269 states and 84643 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-14 04:14:53,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:56,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:14:58,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:15:00,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:15:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:07,232 INFO L93 Difference]: Finished difference Result 150983 states and 222102 transitions. [2024-11-14 04:15:07,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:15:07,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 282 [2024-11-14 04:15:07,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:07,738 INFO L225 Difference]: With dead ends: 150983 [2024-11-14 04:15:07,739 INFO L226 Difference]: Without dead ends: 93726 [2024-11-14 04:15:08,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:15:08,220 INFO L432 NwaCegarLoop]: 1391 mSDtfsCounter, 764 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:08,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 2323 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 363 Invalid, 4 Unknown, 0 Unchecked, 11.5s Time] [2024-11-14 04:15:08,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93726 states. [2024-11-14 04:15:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93726 to 93399. [2024-11-14 04:15:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93399 states, 56244 states have (on average 1.3436633240879028) internal successors, (75573), 59692 states have internal predecessors, (75573), 30749 states have call successors, (30749), 6487 states have call predecessors, (30749), 6405 states have return successors, (30748), 29543 states have call predecessors, (30748), 30748 states have call successors, (30748) [2024-11-14 04:15:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93399 states to 93399 states and 137070 transitions. [2024-11-14 04:15:14,272 INFO L78 Accepts]: Start accepts. Automaton has 93399 states and 137070 transitions. Word has length 282 [2024-11-14 04:15:14,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:14,277 INFO L471 AbstractCegarLoop]: Abstraction has 93399 states and 137070 transitions. [2024-11-14 04:15:14,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-14 04:15:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 93399 states and 137070 transitions. [2024-11-14 04:15:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-14 04:15:14,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:14,426 INFO L215 NwaCegarLoop]: trace histogram [22, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:14,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:15:14,426 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:15:14,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 89465838, now seen corresponding path program 1 times [2024-11-14 04:15:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:15:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88293060] [2024-11-14 04:15:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:15:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2024-11-14 04:15:25,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:15:25,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88293060] [2024-11-14 04:15:25,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88293060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:15:25,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:15:25,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:15:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244310921] [2024-11-14 04:15:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:15:25,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:15:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:15:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:15:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:15:25,268 INFO L87 Difference]: Start difference. First operand 93399 states and 137070 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-14 04:15:27,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:15:29,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:15:31,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []