./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--hp--hp100.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:39:35,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:39:35,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:39:35,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:39:35,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:39:35,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:39:35,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:39:35,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:39:35,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:39:35,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:39:35,934 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:39:35,935 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:39:35,936 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:39:35,936 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:39:35,937 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:39:35,937 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:39:35,938 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:39:35,939 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:39:35,939 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:39:35,940 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:39:35,941 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:39:35,941 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:39:35,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:39:35,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:39:35,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:39:35,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:39:35,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:39:35,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:39:35,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:39:35,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:39:35,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:39:35,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:39:35,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:39:35,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:39:35,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:35,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:39:35,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:39:35,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:39:35,950 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:39:35,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:39:35,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:39:35,953 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:39:35,953 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:39:35,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:39:35,954 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_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 [2023-11-23 20:39:36,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:39:36,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:39:36,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:39:36,300 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:39:36,301 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:39:36,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2023-11-23 20:39:39,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:39:40,135 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:39:40,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2023-11-23 20:39:40,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/data/e0fa20689/99fdd6d31d944f5995703988d7ebcf8f/FLAG12bfe041a [2023-11-23 20:39:40,207 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/data/e0fa20689/99fdd6d31d944f5995703988d7ebcf8f [2023-11-23 20:39:40,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:39:40,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:39:40,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:40,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:39:40,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:39:40,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:40" (1/1) ... [2023-11-23 20:39:40,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cbd5024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:40, skipping insertion in model container [2023-11-23 20:39:40,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:40" (1/1) ... [2023-11-23 20:39:40,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:39:42,412 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_34f1548c-493c-4615-8548-9c66af74e4d7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2023-11-23 20:39:42,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:42,539 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:39:42,743 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"); [5533] [2023-11-23 20:39:42,745 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)); [5540] [2023-11-23 20:39:42,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [5653] [2023-11-23 20:39:42,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [5656] [2023-11-23 20:39:42,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [5659] [2023-11-23 20:39:42,751 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [5662] [2023-11-23 20:39:42,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5714] [2023-11-23 20:39:42,755 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5752] [2023-11-23 20:39:42,755 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5760] [2023-11-23 20:39:42,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [5767] [2023-11-23 20:39:42,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [5775] [2023-11-23 20:39:42,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [5782] [2023-11-23 20:39:42,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [5790] [2023-11-23 20:39:42,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsl": "+S" (addr), "+c" (count): "d" (port)); [5797] [2023-11-23 20:39:42,758 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insl": "+D" (addr), "+c" (count): "d" (port)); [5804] [2023-11-23 20:39:42,790 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [5947-5948] [2023-11-23 20:39:42,817 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [5976-5977] [2023-11-23 20:39:43,035 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_34f1548c-493c-4615-8548-9c66af74e4d7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2023-11-23 20:39:43,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:43,221 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:43,222 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:43,222 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:43,230 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:39:43,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43 WrapperNode [2023-11-23 20:39:43,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:43,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:39:43,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:39:43,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:39:43,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,577 INFO L138 Inliner]: procedures = 225, calls = 1511, calls flagged for inlining = 103, calls inlined = 100, statements flattened = 4441 [2023-11-23 20:39:43,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:39:43,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:39:43,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:39:43,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:39:43,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:39:43,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:39:43,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:39:43,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:39:43,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (1/1) ... [2023-11-23 20:39:43,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:43,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:39:43,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:39:43,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:39:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2023-11-23 20:39:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2023-11-23 20:39:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:39:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:39:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:39:43,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:39:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:39:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:39:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-11-23 20:39:43,986 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-11-23 20:39:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 20:39:43,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 20:39:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:39:43,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:39:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:39:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:39:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-23 20:39:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-23 20:39:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 20:39:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 20:39:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:39:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:39:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:39:43,989 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:39:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2023-11-23 20:39:43,990 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2023-11-23 20:39:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2023-11-23 20:39:43,990 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2023-11-23 20:39:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2023-11-23 20:39:43,990 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2023-11-23 20:39:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 20:39:43,991 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 20:39:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:39:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:39:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 20:39:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2023-11-23 20:39:43,991 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2023-11-23 20:39:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-11-23 20:39:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-11-23 20:39:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:39:43,992 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_get_stats [2023-11-23 20:39:43,993 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_get_stats [2023-11-23 20:39:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 20:39:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 20:39:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-23 20:39:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-23 20:39:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 20:39:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 20:39:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:39:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:39:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 20:39:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 20:39:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:39:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 20:39:43,997 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 20:39:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:39:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2023-11-23 20:39:43,997 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2023-11-23 20:39:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:39:43,997 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:39:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-23 20:39:43,998 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-23 20:39:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2023-11-23 20:39:43,998 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2023-11-23 20:39:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 20:39:43,998 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 20:39:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 20:39:43,999 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 20:39:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 20:39:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 20:39:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:39:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:39:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2023-11-23 20:39:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2023-11-23 20:39:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2023-11-23 20:39:44,001 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2023-11-23 20:39:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2023-11-23 20:39:44,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2023-11-23 20:39:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:39:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 20:39:44,001 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 20:39:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:39:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2023-11-23 20:39:44,002 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2023-11-23 20:39:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-23 20:39:44,002 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-23 20:39:44,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:39:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 20:39:44,003 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 20:39:44,003 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 20:39:44,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 20:39:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 20:39:44,004 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 20:39:44,004 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2023-11-23 20:39:44,004 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2023-11-23 20:39:44,005 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2023-11-23 20:39:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2023-11-23 20:39:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 20:39:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 20:39:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2023-11-23 20:39:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2023-11-23 20:39:44,006 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-23 20:39:44,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-23 20:39:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 20:39:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 20:39:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2023-11-23 20:39:44,007 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2023-11-23 20:39:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:39:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 20:39:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 20:39:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure dev_consume_skb_any [2023-11-23 20:39:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_consume_skb_any [2023-11-23 20:39:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2023-11-23 20:39:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2023-11-23 20:39:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:39:44,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:39:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2023-11-23 20:39:44,009 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2023-11-23 20:39:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 20:39:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 20:39:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2023-11-23 20:39:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2023-11-23 20:39:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2023-11-23 20:39:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2023-11-23 20:39:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2023-11-23 20:39:44,011 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2023-11-23 20:39:44,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:39:44,012 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2023-11-23 20:39:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2023-11-23 20:39:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 20:39:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 20:39:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:39:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 20:39:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 20:39:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:39:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 20:39:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-23 20:39:44,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-23 20:39:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2023-11-23 20:39:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2023-11-23 20:39:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2023-11-23 20:39:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2023-11-23 20:39:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2023-11-23 20:39:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2023-11-23 20:39:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 20:39:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 20:39:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-23 20:39:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-23 20:39:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2023-11-23 20:39:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2023-11-23 20:39:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2023-11-23 20:39:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2023-11-23 20:39:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:39:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2023-11-23 20:39:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2023-11-23 20:39:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:39:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:39:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2023-11-23 20:39:44,028 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2023-11-23 20:39:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2023-11-23 20:39:44,029 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2023-11-23 20:39:44,777 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:39:44,781 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:39:45,601 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:39:48,572 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 20:39:48,931 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !(0 == ~tmp___4~7#1 % 18446744073709551616); [2023-11-23 20:39:48,931 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume 0 == ~tmp___4~7#1 % 18446744073709551616;#t~nondet728#1 := 0; [2023-11-23 20:39:48,931 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L8188-2: assume 0 == #t~nondet728#1 % 18446744073709551616;havoc #t~nondet728#1; [2023-11-23 20:39:48,932 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L8188-2: assume !(0 == #t~nondet728#1 % 18446744073709551616);havoc #t~nondet728#1; [2023-11-23 20:39:48,932 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L8188: assume 2096896 == ~tmp___4~7#1 % 18446744073709551616;#t~nondet728#1 := ~tmp___4~7#1; [2023-11-23 20:39:48,932 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L8188: assume !(2096896 == ~tmp___4~7#1 % 18446744073709551616);assume #t~nondet728#1 % 18446744073709551616 <= ~tmp___4~7#1 % 18446744073709551616;assume #t~nondet728#1 % 18446744073709551616 <= 2096896; [2023-11-23 20:39:48,932 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L8188-4: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2023-11-23 20:39:48,932 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L8188-4: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2023-11-23 20:39:48,933 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189-1: assume -9223372036854775808 <= #t~ret729#1 && #t~ret729#1 <= 9223372036854775807;havoc #t~ret729#1; [2023-11-23 20:39:48,933 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189: SUMMARY for call #t~ret729#1 := schedule_timeout_interruptible(1); srcloc: null [2023-11-23 20:39:49,120 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:39:51,583 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:39:51,583 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:39:51,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:51 BoogieIcfgContainer [2023-11-23 20:39:51,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:39:51,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:39:51,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:39:51,593 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:39:51,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:39:40" (1/3) ... [2023-11-23 20:39:51,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f19ec86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:51, skipping insertion in model container [2023-11-23 20:39:51,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:43" (2/3) ... [2023-11-23 20:39:51,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f19ec86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:51, skipping insertion in model container [2023-11-23 20:39:51,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:51" (3/3) ... [2023-11-23 20:39:51,598 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2023-11-23 20:39:51,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:39:51,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:39:51,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:39:51,749 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;@46cc89df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:39:51,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:39:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 1513 states, 862 states have (on average 1.3445475638051043) internal successors, (1159), 908 states have internal predecessors, (1159), 581 states have call successors, (581), 71 states have call predecessors, (581), 70 states have return successors, (574), 561 states have call predecessors, (574), 574 states have call successors, (574) [2023-11-23 20:39:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 20:39:51,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:39:51,810 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 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] [2023-11-23 20:39:51,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:39:51,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:39:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash -297717709, now seen corresponding path program 1 times [2023-11-23 20:39:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:39:51,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159148584] [2023-11-23 20:39:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:39:51,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:39:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:39:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-23 20:39:53,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:39:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159148584] [2023-11-23 20:39:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159148584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:39:53,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:39:53,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:39:53,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103437260] [2023-11-23 20:39:53,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:39:53,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:39:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:39:53,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:39:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:39:53,127 INFO L87 Difference]: Start difference. First operand has 1513 states, 862 states have (on average 1.3445475638051043) internal successors, (1159), 908 states have internal predecessors, (1159), 581 states have call successors, (581), 71 states have call predecessors, (581), 70 states have return successors, (574), 561 states have call predecessors, (574), 574 states have call successors, (574) Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:39:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:39:56,117 INFO L93 Difference]: Finished difference Result 4481 states and 6928 transitions. [2023-11-23 20:39:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:39:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 132 [2023-11-23 20:39:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:39:56,174 INFO L225 Difference]: With dead ends: 4481 [2023-11-23 20:39:56,174 INFO L226 Difference]: Without dead ends: 2963 [2023-11-23 20:39:56,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:39:56,203 INFO L413 NwaCegarLoop]: 2670 mSDtfsCounter, 2260 mSDsluCounter, 7386 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 10056 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:39:56,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 10056 Invalid, 1065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 20:39:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2023-11-23 20:39:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2953. [2023-11-23 20:39:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 1687 states have (on average 1.3349140486069946) internal successors, (2252), 1761 states have internal predecessors, (2252), 1128 states have call successors, (1128), 139 states have call predecessors, (1128), 137 states have return successors, (1127), 1098 states have call predecessors, (1127), 1127 states have call successors, (1127) [2023-11-23 20:39:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 4507 transitions. [2023-11-23 20:39:56,655 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 4507 transitions. Word has length 132 [2023-11-23 20:39:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:39:56,656 INFO L495 AbstractCegarLoop]: Abstraction has 2953 states and 4507 transitions. [2023-11-23 20:39:56,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:39:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 4507 transitions. [2023-11-23 20:39:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 20:39:56,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:39:56,667 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 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] [2023-11-23 20:39:56,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:39:56,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:39:56,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:39:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2049649872, now seen corresponding path program 1 times [2023-11-23 20:39:56,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:39:56,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315585571] [2023-11-23 20:39:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:39:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:39:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:39:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-23 20:39:57,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:39:57,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315585571] [2023-11-23 20:39:57,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315585571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:39:57,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:39:57,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:39:57,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945630799] [2023-11-23 20:39:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:39:57,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:39:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:39:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:39:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:39:57,400 INFO L87 Difference]: Start difference. First operand 2953 states and 4507 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:39:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:39:59,939 INFO L93 Difference]: Finished difference Result 5902 states and 9007 transitions. [2023-11-23 20:39:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:39:59,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2023-11-23 20:39:59,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:39:59,980 INFO L225 Difference]: With dead ends: 5902 [2023-11-23 20:39:59,980 INFO L226 Difference]: Without dead ends: 2968 [2023-11-23 20:40:00,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:00,010 INFO L413 NwaCegarLoop]: 2404 mSDtfsCounter, 2235 mSDsluCounter, 6834 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 9238 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:00,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 9238 Invalid, 955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 20:40:00,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2023-11-23 20:40:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2958. [2023-11-23 20:40:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 1691 states have (on average 1.3341218214074513) internal successors, (2256), 1765 states have internal predecessors, (2256), 1128 states have call successors, (1128), 140 states have call predecessors, (1128), 138 states have return successors, (1127), 1098 states have call predecessors, (1127), 1127 states have call successors, (1127) [2023-11-23 20:40:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 4511 transitions. [2023-11-23 20:40:00,324 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 4511 transitions. Word has length 134 [2023-11-23 20:40:00,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:00,325 INFO L495 AbstractCegarLoop]: Abstraction has 2958 states and 4511 transitions. [2023-11-23 20:40:00,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:40:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 4511 transitions. [2023-11-23 20:40:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 20:40:00,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:00,334 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 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] [2023-11-23 20:40:00,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:40:00,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:00,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 321170751, now seen corresponding path program 1 times [2023-11-23 20:40:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:00,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664316594] [2023-11-23 20:40:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:00,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-23 20:40:00,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:00,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664316594] [2023-11-23 20:40:00,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664316594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:00,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:00,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32205612] [2023-11-23 20:40:00,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:00,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:00,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:00,996 INFO L87 Difference]: Start difference. First operand 2958 states and 4511 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:40:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:03,886 INFO L93 Difference]: Finished difference Result 7379 states and 11251 transitions. [2023-11-23 20:40:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:40:03,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2023-11-23 20:40:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:03,936 INFO L225 Difference]: With dead ends: 7379 [2023-11-23 20:40:03,936 INFO L226 Difference]: Without dead ends: 4440 [2023-11-23 20:40:03,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:03,969 INFO L413 NwaCegarLoop]: 2860 mSDtfsCounter, 2240 mSDsluCounter, 7748 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 10608 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:03,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 10608 Invalid, 1105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 20:40:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2023-11-23 20:40:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 4411. [2023-11-23 20:40:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4411 states, 2522 states have (on average 1.3358445678033306) internal successors, (3369), 2636 states have internal predecessors, (3369), 1682 states have call successors, (1682), 209 states have call predecessors, (1682), 206 states have return successors, (1681), 1634 states have call predecessors, (1681), 1681 states have call successors, (1681) [2023-11-23 20:40:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4411 states to 4411 states and 6732 transitions. [2023-11-23 20:40:04,548 INFO L78 Accepts]: Start accepts. Automaton has 4411 states and 6732 transitions. Word has length 131 [2023-11-23 20:40:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:04,549 INFO L495 AbstractCegarLoop]: Abstraction has 4411 states and 6732 transitions. [2023-11-23 20:40:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:40:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4411 states and 6732 transitions. [2023-11-23 20:40:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 20:40:04,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:04,561 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 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] [2023-11-23 20:40:04,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:40:04,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:04,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:04,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2103541348, now seen corresponding path program 1 times [2023-11-23 20:40:04,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:04,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996885707] [2023-11-23 20:40:04,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:04,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-23 20:40:05,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:05,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996885707] [2023-11-23 20:40:05,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996885707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:05,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:05,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:05,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943352046] [2023-11-23 20:40:05,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:05,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:05,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:05,075 INFO L87 Difference]: Start difference. First operand 4411 states and 6732 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:40:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:07,780 INFO L93 Difference]: Finished difference Result 7480 states and 11354 transitions. [2023-11-23 20:40:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:40:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2023-11-23 20:40:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:07,907 INFO L225 Difference]: With dead ends: 7480 [2023-11-23 20:40:07,907 INFO L226 Difference]: Without dead ends: 4289 [2023-11-23 20:40:07,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:07,934 INFO L413 NwaCegarLoop]: 2424 mSDtfsCounter, 2235 mSDsluCounter, 6874 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 9298 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:07,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 9298 Invalid, 955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 20:40:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2023-11-23 20:40:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 4273. [2023-11-23 20:40:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 2438 states have (on average 1.3359310910582445) internal successors, (3257), 2545 states have internal predecessors, (3257), 1634 states have call successors, (1634), 203 states have call predecessors, (1634), 200 states have return successors, (1633), 1587 states have call predecessors, (1633), 1633 states have call successors, (1633) [2023-11-23 20:40:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 6524 transitions. [2023-11-23 20:40:08,417 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 6524 transitions. Word has length 133 [2023-11-23 20:40:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:08,419 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 6524 transitions. [2023-11-23 20:40:08,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:40:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 6524 transitions. [2023-11-23 20:40:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 20:40:08,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:08,437 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:40:08,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:40:08,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:08,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash 759895911, now seen corresponding path program 1 times [2023-11-23 20:40:08,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:08,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221432141] [2023-11-23 20:40:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:08,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-23 20:40:09,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:09,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221432141] [2023-11-23 20:40:09,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221432141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:40:09,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582264444] [2023-11-23 20:40:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:09,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:09,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:09,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:09,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:40:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:10,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:40:10,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 20:40:10,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:10,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582264444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:10,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:40:10,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-23 20:40:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284059407] [2023-11-23 20:40:10,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:10,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:10,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:10,378 INFO L87 Difference]: Start difference. First operand 4273 states and 6524 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 20:40:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:11,851 INFO L93 Difference]: Finished difference Result 7235 states and 11046 transitions. [2023-11-23 20:40:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:11,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 144 [2023-11-23 20:40:11,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:11,904 INFO L225 Difference]: With dead ends: 7235 [2023-11-23 20:40:11,904 INFO L226 Difference]: Without dead ends: 4291 [2023-11-23 20:40:11,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:40:11,935 INFO L413 NwaCegarLoop]: 2066 mSDtfsCounter, 7 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:11,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4125 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 20:40:11,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2023-11-23 20:40:12,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 4275. [2023-11-23 20:40:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4275 states, 2440 states have (on average 1.335655737704918) internal successors, (3259), 2547 states have internal predecessors, (3259), 1634 states have call successors, (1634), 203 states have call predecessors, (1634), 200 states have return successors, (1633), 1587 states have call predecessors, (1633), 1633 states have call successors, (1633) [2023-11-23 20:40:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 6526 transitions. [2023-11-23 20:40:12,536 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 6526 transitions. Word has length 144 [2023-11-23 20:40:12,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:12,538 INFO L495 AbstractCegarLoop]: Abstraction has 4275 states and 6526 transitions. [2023-11-23 20:40:12,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 20:40:12,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 6526 transitions. [2023-11-23 20:40:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-23 20:40:12,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:12,553 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:40:12,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:12,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:12,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:12,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:12,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1162906305, now seen corresponding path program 1 times [2023-11-23 20:40:12,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:12,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329670512] [2023-11-23 20:40:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:12,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:12,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655990450] [2023-11-23 20:40:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:12,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:12,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:12,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:12,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:40:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:13,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:40:13,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-23 20:40:14,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:14,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:14,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329670512] [2023-11-23 20:40:14,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:14,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655990450] [2023-11-23 20:40:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655990450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:14,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:14,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:40:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95644034] [2023-11-23 20:40:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:14,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:40:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:40:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:14,012 INFO L87 Difference]: Start difference. First operand 4275 states and 6526 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 20:40:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:17,924 INFO L93 Difference]: Finished difference Result 10036 states and 15313 transitions. [2023-11-23 20:40:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 20:40:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 149 [2023-11-23 20:40:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:18,014 INFO L225 Difference]: With dead ends: 10036 [2023-11-23 20:40:18,018 INFO L226 Difference]: Without dead ends: 7090 [2023-11-23 20:40:18,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-23 20:40:18,043 INFO L413 NwaCegarLoop]: 2822 mSDtfsCounter, 2270 mSDsluCounter, 13325 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 16147 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:18,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 16147 Invalid, 1717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 20:40:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7090 states. [2023-11-23 20:40:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7090 to 7057. [2023-11-23 20:40:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7057 states, 4029 states have (on average 1.3373045420699925) internal successors, (5388), 4211 states have internal predecessors, (5388), 2696 states have call successors, (2696), 334 states have call predecessors, (2696), 331 states have return successors, (2700), 2614 states have call predecessors, (2700), 2695 states have call successors, (2700) [2023-11-23 20:40:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7057 states to 7057 states and 10784 transitions. [2023-11-23 20:40:18,909 INFO L78 Accepts]: Start accepts. Automaton has 7057 states and 10784 transitions. Word has length 149 [2023-11-23 20:40:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:18,910 INFO L495 AbstractCegarLoop]: Abstraction has 7057 states and 10784 transitions. [2023-11-23 20:40:18,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 20:40:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7057 states and 10784 transitions. [2023-11-23 20:40:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 20:40:18,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:18,931 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 20:40:18,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:19,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:19,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:40:19,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1814768840, now seen corresponding path program 1 times [2023-11-23 20:40:19,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:19,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290106770] [2023-11-23 20:40:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:19,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:19,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636864805] [2023-11-23 20:40:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:19,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:19,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:19,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f1548c-493c-4615-8548-9c66af74e4d7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:40:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:20,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:40:20,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-23 20:40:20,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:20,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290106770] [2023-11-23 20:40:20,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636864805] [2023-11-23 20:40:20,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636864805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:20,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:20,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 20:40:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539348910] [2023-11-23 20:40:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:20,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 20:40:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 20:40:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:40:20,318 INFO L87 Difference]: Start difference. First operand 7057 states and 10784 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18)