./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--fddi--defxx.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_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/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_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/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--fddi--defxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/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_f346f32b-53df-457a-a68d-ee525f2a9d6f/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 e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:25,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:25,211 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:18:25,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:25,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:25,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:25,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:25,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:25,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:25,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:25,266 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:25,268 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:25,268 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:25,270 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:25,270 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:25,271 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:25,271 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:25,272 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:25,273 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:25,273 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:25,274 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:25,274 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:25,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:25,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:25,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:25,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:25,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:25,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:25,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:25,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:25,278 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:25,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:25,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:25,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:25,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:25,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:25,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:25,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:25,281 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:25,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:25,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:25,282 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:25,282 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:25,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:25,283 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_f346f32b-53df-457a-a68d-ee525f2a9d6f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 [2023-11-23 21:18:25,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:25,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:25,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:25,707 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:25,708 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:25,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2023-11-23 21:18:28,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:29,405 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:29,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2023-11-23 21:18:29,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/data/622174fa5/b0f72a0adaf749f2b23e822ec503f74c/FLAG99f32eb63 [2023-11-23 21:18:29,469 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/data/622174fa5/b0f72a0adaf749f2b23e822ec503f74c [2023-11-23 21:18:29,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:29,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:29,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:29,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:29,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:29,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:29" (1/1) ... [2023-11-23 21:18:29,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ba1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:29, skipping insertion in model container [2023-11-23 21:18:29,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:29" (1/1) ... [2023-11-23 21:18:29,628 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:32,099 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_f346f32b-53df-457a-a68d-ee525f2a9d6f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2023-11-23 21:18:32,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:32,232 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:32,463 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"); [6250] [2023-11-23 21:18:32,465 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)); [6257] [2023-11-23 21:18:32,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [6402] [2023-11-23 21:18:32,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [6409] [2023-11-23 21:18:32,473 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [6418] [2023-11-23 21:18:32,474 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [6426] [2023-11-23 21:18:32,474 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [6433] [2023-11-23 21:18:32,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [6441] [2023-11-23 21:18:32,488 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)); [6556-6557] [2023-11-23 21:18:32,490 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)); [6585-6586] [2023-11-23 21:18:32,493 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" (108), "i" (12UL)); [6615-6616] [2023-11-23 21:18:32,517 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6897] [2023-11-23 21:18:32,519 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6928] [2023-11-23 21:18:32,726 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_f346f32b-53df-457a-a68d-ee525f2a9d6f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2023-11-23 21:18:32,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:32,913 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:32,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32 WrapperNode [2023-11-23 21:18:32,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:32,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:32,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:32,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:32,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,177 INFO L138 Inliner]: procedures = 215, calls = 1704, calls flagged for inlining = 108, calls inlined = 105, statements flattened = 3325 [2023-11-23 21:18:33,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:33,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:33,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:33,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:33,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:33,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:33,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:33,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:33,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (1/1) ... [2023-11-23 21:18:33,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:33,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:33,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:33,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346f32b-53df-457a-a68d-ee525f2a9d6f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:18:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:18:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:18:33,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:18:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:18:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:18:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-11-23 21:18:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-11-23 21:18:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:18:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:18:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:18:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:18:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:18:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:18:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:18:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:18:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:18:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:18:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:18:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:18:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:18:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:18:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:18:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:18:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:18:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:18:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2023-11-23 21:18:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2023-11-23 21:18:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:18:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:18:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:18:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_port_read_long [2023-11-23 21:18:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_port_read_long [2023-11-23 21:18:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:18:33,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 21:18:33,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 21:18:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:18:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:18:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:18:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 21:18:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 21:18:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:18:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_adap_init [2023-11-23 21:18:33,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_adap_init [2023-11-23 21:18:33,589 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:18:33,590 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:18:33,590 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2023-11-23 21:18:33,590 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2023-11-23 21:18:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-11-23 21:18:33,591 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-11-23 21:18:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_int_common [2023-11-23 21:18:33,592 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_int_common [2023-11-23 21:18:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:18:33,592 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:18:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 21:18:33,592 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 21:18:33,593 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:18:33,593 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:18:33,593 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_rcv_flush [2023-11-23 21:18:33,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_rcv_flush [2023-11-23 21:18:33,593 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_get_stats [2023-11-23 21:18:33,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_get_stats [2023-11-23 21:18:33,593 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:18:33,593 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:18:33,594 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_update_cam [2023-11-23 21:18:33,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_update_cam [2023-11-23 21:18:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:18:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_dma_cmd_req [2023-11-23 21:18:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_dma_cmd_req [2023-11-23 21:18:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_dma_uninit [2023-11-23 21:18:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_dma_uninit [2023-11-23 21:18:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:18:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:18:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:18:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-23 21:18:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-23 21:18:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_cpu [2023-11-23 21:18:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_cpu [2023-11-23 21:18:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-11-23 21:18:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-11-23 21:18:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:18:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure my_skb_align [2023-11-23 21:18:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure my_skb_align [2023-11-23 21:18:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:18:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:18:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:18:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:18:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:18:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:18:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_port_write_long [2023-11-23 21:18:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_port_write_long [2023-11-23 21:18:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:18:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:18:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-23 21:18:33,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-23 21:18:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:18:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 21:18:33,600 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 21:18:33,600 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-11-23 21:18:33,600 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-11-23 21:18:33,600 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-11-23 21:18:33,600 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-11-23 21:18:33,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:18:33,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:18:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:18:33,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:18:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:18:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2023-11-23 21:18:33,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2023-11-23 21:18:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_port_ctrl_req [2023-11-23 21:18:33,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_port_ctrl_req [2023-11-23 21:18:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:33,602 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_xmt_flush [2023-11-23 21:18:33,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_xmt_flush [2023-11-23 21:18:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:18:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:18:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:18:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_update_filters [2023-11-23 21:18:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_update_filters [2023-11-23 21:18:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-23 21:18:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-23 21:18:33,603 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_set_mac_address [2023-11-23 21:18:33,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_set_mac_address [2023-11-23 21:18:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_set_multicast_list [2023-11-23 21:18:33,604 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_set_multicast_list [2023-11-23 21:18:33,604 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_adap_state_rd [2023-11-23 21:18:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_adap_state_rd [2023-11-23 21:18:33,605 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:18:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:18:33,605 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-23 21:18:33,605 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-23 21:18:33,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:18:33,605 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_get_bars [2023-11-23 21:18:33,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_get_bars [2023-11-23 21:18:33,608 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-23 21:18:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-23 21:18:33,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:33,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:34,288 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:34,292 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:36,302 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:18:47,821 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:49,115 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:49,115 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:18:49,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:49 BoogieIcfgContainer [2023-11-23 21:18:49,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:49,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:49,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:49,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:49,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:29" (1/3) ... [2023-11-23 21:18:49,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78be665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:49, skipping insertion in model container [2023-11-23 21:18:49,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:32" (2/3) ... [2023-11-23 21:18:49,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78be665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:49, skipping insertion in model container [2023-11-23 21:18:49,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:49" (3/3) ... [2023-11-23 21:18:49,127 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2023-11-23 21:18:49,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:49,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:18:49,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:49,254 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;@78ad5d03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:49,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:18:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 977 states, 593 states have (on average 1.315345699831366) internal successors, (780), 614 states have internal predecessors, (780), 322 states have call successors, (322), 61 states have call predecessors, (322), 60 states have return successors, (316), 316 states have call predecessors, (316), 316 states have call successors, (316) [2023-11-23 21:18:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 21:18:49,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:49,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:49,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:49,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1328991894, now seen corresponding path program 1 times [2023-11-23 21:18:49,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:49,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95529419] [2023-11-23 21:18:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:49,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 21:18:50,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:50,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95529419] [2023-11-23 21:18:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95529419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:50,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:50,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:50,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173353734] [2023-11-23 21:18:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:50,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:18:50,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:50,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:18:50,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:18:50,522 INFO L87 Difference]: Start difference. First operand has 977 states, 593 states have (on average 1.315345699831366) internal successors, (780), 614 states have internal predecessors, (780), 322 states have call successors, (322), 61 states have call predecessors, (322), 60 states have return successors, (316), 316 states have call predecessors, (316), 316 states have call successors, (316) Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 21:18:56,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:58,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:59,701 INFO L93 Difference]: Finished difference Result 2906 states and 4248 transitions. [2023-11-23 21:18:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:18:59,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 116 [2023-11-23 21:18:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:59,734 INFO L225 Difference]: With dead ends: 2906 [2023-11-23 21:18:59,734 INFO L226 Difference]: Without dead ends: 1912 [2023-11-23 21:18:59,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:18:59,750 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 1379 mSDsluCounter, 4108 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 5536 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:59,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 5536 Invalid, 598 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-23 21:18:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2023-11-23 21:18:59,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1902. [2023-11-23 21:18:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1163 states have (on average 1.299226139294927) internal successors, (1511), 1190 states have internal predecessors, (1511), 619 states have call successors, (619), 120 states have call predecessors, (619), 119 states have return successors, (618), 617 states have call predecessors, (618), 618 states have call successors, (618) [2023-11-23 21:18:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2748 transitions. [2023-11-23 21:18:59,997 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2748 transitions. Word has length 116 [2023-11-23 21:18:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:59,998 INFO L495 AbstractCegarLoop]: Abstraction has 1902 states and 2748 transitions. [2023-11-23 21:18:59,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 21:18:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2748 transitions. [2023-11-23 21:19:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 21:19:00,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:00,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:00,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:19:00,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:19:00,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash -318689072, now seen corresponding path program 1 times [2023-11-23 21:19:00,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:00,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602340273] [2023-11-23 21:19:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:00,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 21:19:00,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:00,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602340273] [2023-11-23 21:19:00,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602340273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:00,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:00,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:19:00,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969991239] [2023-11-23 21:19:00,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:00,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:19:00,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:19:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:00,744 INFO L87 Difference]: Start difference. First operand 1902 states and 2748 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 21:19:07,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:19:09,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:19:12,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:19:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:13,120 INFO L93 Difference]: Finished difference Result 3812 states and 5505 transitions. [2023-11-23 21:19:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:19:13,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 118 [2023-11-23 21:19:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:13,138 INFO L225 Difference]: With dead ends: 3812 [2023-11-23 21:19:13,139 INFO L226 Difference]: Without dead ends: 1917 [2023-11-23 21:19:13,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:19:13,150 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 1357 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 5453 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:13,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 5453 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 587 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2023-11-23 21:19:13,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2023-11-23 21:19:13,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1907. [2023-11-23 21:19:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1167 states have (on average 1.2982005141388175) internal successors, (1515), 1194 states have internal predecessors, (1515), 619 states have call successors, (619), 121 states have call predecessors, (619), 120 states have return successors, (618), 617 states have call predecessors, (618), 618 states have call successors, (618) [2023-11-23 21:19:13,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2752 transitions. [2023-11-23 21:19:13,366 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2752 transitions. Word has length 118 [2023-11-23 21:19:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:13,369 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2752 transitions. [2023-11-23 21:19:13,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 21:19:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2752 transitions. [2023-11-23 21:19:13,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 21:19:13,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:13,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:13,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:19:13,386 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:19:13,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:13,386 INFO L85 PathProgramCache]: Analyzing trace with hash 37516147, now seen corresponding path program 1 times [2023-11-23 21:19:13,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:13,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743251734] [2023-11-23 21:19:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:13,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 21:19:13,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:13,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743251734] [2023-11-23 21:19:13,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743251734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:13,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:13,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:19:13,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361261047] [2023-11-23 21:19:13,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:13,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:19:13,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:19:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:13,952 INFO L87 Difference]: Start difference. First operand 1907 states and 2752 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 21:19:18,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []