./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.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_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/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_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/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_1a6c5126-9080-4fb6-8350-77e71416072c/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 fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:38,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:38,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:13:38,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:38,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:38,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:38,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:38,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:38,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:38,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:38,273 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:38,273 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:38,274 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:38,276 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:38,276 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:38,277 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:38,277 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:38,278 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:38,278 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:38,279 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:38,280 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:38,280 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:38,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:38,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:38,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:38,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:38,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:38,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:38,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:38,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:38,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:38,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:38,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:38,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:38,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:38,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:38,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:38,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:38,290 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:38,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:38,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:38,291 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:38,291 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:38,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:38,292 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_1a6c5126-9080-4fb6-8350-77e71416072c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2023-11-23 21:13:38,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:38,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:38,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:38,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:38,629 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:38,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2023-11-23 21:13:42,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:42,750 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:42,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2023-11-23 21:13:42,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/data/9afd808c2/194c5d44d4ee43f5ac38fc64bd9b2ff1/FLAGa85bf3590 [2023-11-23 21:13:42,835 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/data/9afd808c2/194c5d44d4ee43f5ac38fc64bd9b2ff1 [2023-11-23 21:13:42,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:42,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:42,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:42,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:42,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:42,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:42" (1/1) ... [2023-11-23 21:13:42,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d874a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:42, skipping insertion in model container [2023-11-23 21:13:42,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:42" (1/1) ... [2023-11-23 21:13:43,052 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:45,741 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_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2023-11-23 21:13:45,746 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_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2023-11-23 21:13:45,747 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_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2023-11-23 21:13:45,749 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_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2023-11-23 21:13:45,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:45,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:45,936 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"); [5181] [2023-11-23 21:13:45,938 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)); [5188] [2023-11-23 21:13:45,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5195] [2023-11-23 21:13:45,948 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [5244] [2023-11-23 21:13:45,951 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5316] [2023-11-23 21:13:45,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5323] [2023-11-23 21:13:45,961 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/linux/netdevice.h"), "i" (502), "i" (12UL)); [5522-5523] [2023-11-23 21:13:45,961 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [5529] [2023-11-23 21:13:46,275 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_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2023-11-23 21:13:46,276 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_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2023-11-23 21:13:46,276 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_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2023-11-23 21:13:46,277 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_1a6c5126-9080-4fb6-8350-77e71416072c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2023-11-23 21:13:46,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:46,508 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:46,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46 WrapperNode [2023-11-23 21:13:46,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:46,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:46,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:46,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:46,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:46,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:46,844 INFO L138 Inliner]: procedures = 411, calls = 2035, calls flagged for inlining = 211, calls inlined = 188, statements flattened = 4737 [2023-11-23 21:13:46,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:46,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:46,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:46,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:46,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:46,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:46,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:46,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:47,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:47,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:47,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:47,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:47,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:47,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:47,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:47,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:47,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:47,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:47,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:47,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:47,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6c5126-9080-4fb6-8350-77e71416072c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_probe [2023-11-23 21:13:47,230 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_probe [2023-11-23 21:13:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:13:47,230 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:13:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:13:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:13:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:13:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:13:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:13:47,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:13:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 21:13:47,233 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 21:13:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2023-11-23 21:13:47,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2023-11-23 21:13:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure __dnet_set_hwaddr [2023-11-23 21:13:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __dnet_set_hwaddr [2023-11-23 21:13:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:13:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:13:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:13:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:13:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-23 21:13:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-23 21:13:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 21:13:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 21:13:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:13:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:13:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:13:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 21:13:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 21:13:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:13:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:13:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:13:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-11-23 21:13:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-11-23 21:13:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:13:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:13:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:13:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:13:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:13:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:13:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:13:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:13:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_reset_hw [2023-11-23 21:13:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_reset_hw [2023-11-23 21:13:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:13:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:13:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:13:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 21:13:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 21:13:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:13:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:13:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-11-23 21:13:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-11-23 21:13:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-11-23 21:13:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-11-23 21:13:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:13:47,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:13:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:13:47,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:13:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:13:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:13:47,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:13:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:13:47,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:13:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:13:47,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:13:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:13:47,245 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:13:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:13:47,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:13:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-23 21:13:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-23 21:13:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 21:13:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 21:13:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:13:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:13:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:13:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:13:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2023-11-23 21:13:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2023-11-23 21:13:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:13:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:13:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:13:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:13:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2023-11-23 21:13:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2023-11-23 21:13:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:13:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:13:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dnet [2023-11-23 21:13:47,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dnet [2023-11-23 21:13:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:13:47,249 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:13:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_readw_mac [2023-11-23 21:13:47,250 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_readw_mac [2023-11-23 21:13:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:13:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:13:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:13:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:13:47,250 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:13:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:13:47,251 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:13:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 21:13:47,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 21:13:47,252 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:13:47,252 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:13:47,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:13:47,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:13:47,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:13:47,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:13:47,252 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_close [2023-11-23 21:13:47,252 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_close [2023-11-23 21:13:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2023-11-23 21:13:47,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2023-11-23 21:13:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_handle_link_change [2023-11-23 21:13:47,253 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_handle_link_change [2023-11-23 21:13:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:13:47,253 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:13:47,254 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:13:47,254 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:13:47,254 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_writew_mac [2023-11-23 21:13:47,254 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_writew_mac [2023-11-23 21:13:47,254 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:13:47,254 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:13:47,255 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:13:47,255 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:13:47,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:13:47,255 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-23 21:13:47,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-23 21:13:47,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:13:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:13:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_remove [2023-11-23 21:13:47,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_remove [2023-11-23 21:13:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 21:13:47,261 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 21:13:47,261 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_open [2023-11-23 21:13:47,262 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_open [2023-11-23 21:13:47,262 INFO L130 BoogieDeclarations]: Found specification of procedure phy_connect [2023-11-23 21:13:47,263 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_connect [2023-11-23 21:13:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:13:47,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:13:47,269 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 21:13:47,269 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 21:13:47,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:47,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:13:47,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:13:47,270 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-23 21:13:47,270 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-23 21:13:48,062 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:48,068 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:13:49,215 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:13:54,131 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:13:54,223 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:13:55,689 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:13:55,690 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:13:55,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:55 BoogieIcfgContainer [2023-11-23 21:13:55,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:13:55,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:13:55,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:13:55,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:13:55,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:42" (1/3) ... [2023-11-23 21:13:55,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed9e3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:55, skipping insertion in model container [2023-11-23 21:13:55,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46" (2/3) ... [2023-11-23 21:13:55,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed9e3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:55, skipping insertion in model container [2023-11-23 21:13:55,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:55" (3/3) ... [2023-11-23 21:13:55,704 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2023-11-23 21:13:55,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:13:55,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 21:13:55,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:13:55,841 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;@65425a95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:13:55,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 21:13:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 1132 states, 694 states have (on average 1.3040345821325647) internal successors, (905), 707 states have internal predecessors, (905), 369 states have call successors, (369), 67 states have call predecessors, (369), 66 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-23 21:13:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 21:13:55,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:55,890 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:55,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:13:55,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1709444013, now seen corresponding path program 1 times [2023-11-23 21:13:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:55,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208997335] [2023-11-23 21:13:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:55,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-23 21:13:56,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:56,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208997335] [2023-11-23 21:13:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208997335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:56,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:56,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:56,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719655281] [2023-11-23 21:13:56,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:56,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:56,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:57,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:57,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:57,027 INFO L87 Difference]: Start difference. First operand has 1132 states, 694 states have (on average 1.3040345821325647) internal successors, (905), 707 states have internal predecessors, (905), 369 states have call successors, (369), 67 states have call predecessors, (369), 66 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:13:59,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:01,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:04,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:05,601 INFO L93 Difference]: Finished difference Result 3289 states and 4792 transitions. [2023-11-23 21:14:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:05,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-11-23 21:14:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:05,657 INFO L225 Difference]: With dead ends: 3289 [2023-11-23 21:14:05,657 INFO L226 Difference]: Without dead ends: 2166 [2023-11-23 21:14:05,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:05,674 INFO L413 NwaCegarLoop]: 1402 mSDtfsCounter, 1541 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:05,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2764 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 484 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2023-11-23 21:14:05,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2023-11-23 21:14:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2162. [2023-11-23 21:14:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 1341 states have (on average 1.2975391498881432) internal successors, (1740), 1365 states have internal predecessors, (1740), 689 states have call successors, (689), 130 states have call predecessors, (689), 129 states have return successors, (686), 682 states have call predecessors, (686), 686 states have call successors, (686) [2023-11-23 21:14:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3115 transitions. [2023-11-23 21:14:05,934 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3115 transitions. Word has length 117 [2023-11-23 21:14:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:05,935 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 3115 transitions. [2023-11-23 21:14:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:14:05,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3115 transitions. [2023-11-23 21:14:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 21:14:05,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:05,940 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:05,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:14:05,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:14:05,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:05,941 INFO L85 PathProgramCache]: Analyzing trace with hash -432151809, now seen corresponding path program 1 times [2023-11-23 21:14:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206621964] [2023-11-23 21:14:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-23 21:14:06,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:06,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206621964] [2023-11-23 21:14:06,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206621964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:06,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:06,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:14:06,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145553813] [2023-11-23 21:14:06,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:06,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:06,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:06,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:06,493 INFO L87 Difference]: Start difference. First operand 2162 states and 3115 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:14:08,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:11,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:13,537 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 21:14:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:15,068 INFO L93 Difference]: Finished difference Result 6282 states and 9139 transitions. [2023-11-23 21:14:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2023-11-23 21:14:15,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:15,160 INFO L225 Difference]: With dead ends: 6282 [2023-11-23 21:14:15,160 INFO L226 Difference]: Without dead ends: 4141 [2023-11-23 21:14:15,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:15,174 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 1481 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:15,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2870 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 517 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2023-11-23 21:14:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2023-11-23 21:14:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4112. [2023-11-23 21:14:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4112 states, 2566 states have (on average 1.3012470771628994) internal successors, (3339), 2616 states have internal predecessors, (3339), 1288 states have call successors, (1288), 258 states have call predecessors, (1288), 255 states have return successors, (1385), 1267 states have call predecessors, (1385), 1285 states have call successors, (1385) [2023-11-23 21:14:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 6012 transitions. [2023-11-23 21:14:15,558 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 6012 transitions. Word has length 119 [2023-11-23 21:14:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:15,559 INFO L495 AbstractCegarLoop]: Abstraction has 4112 states and 6012 transitions. [2023-11-23 21:14:15,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:14:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 6012 transitions. [2023-11-23 21:14:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 21:14:15,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:15,568 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:15,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:14:15,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:14:15,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1468855306, now seen corresponding path program 1 times [2023-11-23 21:14:15,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:15,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082006848] [2023-11-23 21:14:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:15,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-23 21:14:16,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:16,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082006848] [2023-11-23 21:14:16,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082006848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:16,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:16,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:14:16,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710626710] [2023-11-23 21:14:16,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:16,087 INFO L87 Difference]: Start difference. First operand 4112 states and 6012 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:14:18,799 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 21:14:20,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:22,940 WARN L539 Checker$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 21:14:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:25,058 INFO L93 Difference]: Finished difference Result 11730 states and 17040 transitions. [2023-11-23 21:14:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2023-11-23 21:14:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:25,120 INFO L225 Difference]: With dead ends: 11730 [2023-11-23 21:14:25,120 INFO L226 Difference]: Without dead ends: 7639 [2023-11-23 21:14:25,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:25,143 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 1328 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:25,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 3053 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 632 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2023-11-23 21:14:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7639 states. [2023-11-23 21:14:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7639 to 7606. [2023-11-23 21:14:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 4706 states have (on average 1.2756056098597535) internal successors, (6003), 4812 states have internal predecessors, (6003), 2400 states have call successors, (2400), 502 states have call predecessors, (2400), 497 states have return successors, (2503), 2351 states have call predecessors, (2503), 2397 states have call successors, (2503) [2023-11-23 21:14:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 10906 transitions. [2023-11-23 21:14:25,793 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 10906 transitions. Word has length 127 [2023-11-23 21:14:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:25,794 INFO L495 AbstractCegarLoop]: Abstraction has 7606 states and 10906 transitions. [2023-11-23 21:14:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:14:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 10906 transitions. [2023-11-23 21:14:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 21:14:25,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:25,799 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:14:25,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:14:25,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:14:25,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash 509249206, now seen corresponding path program 1 times [2023-11-23 21:14:25,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:25,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261753672] [2023-11-23 21:14:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:25,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-23 21:14:26,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261753672] [2023-11-23 21:14:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261753672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:26,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:26,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:14:26,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672270667] [2023-11-23 21:14:26,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:26,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:26,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:26,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:26,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:26,054 INFO L87 Difference]: Start difference. First operand 7606 states and 10906 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:14:29,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:31,515 WARN L539 Checker$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 21:14:32,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:32,748 INFO L93 Difference]: Finished difference Result 20282 states and 29190 transitions. [2023-11-23 21:14:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:32,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 135 [2023-11-23 21:14:32,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:32,862 INFO L225 Difference]: With dead ends: 20282 [2023-11-23 21:14:32,862 INFO L226 Difference]: Without dead ends: 12697 [2023-11-23 21:14:32,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:32,899 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 1159 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:32,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 2699 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2023-11-23 21:14:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12697 states.