./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh --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 0705c7c1097399903dd015d79fa2944ad89b2d381aed5d9e2539b97c330aa424 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:33:21,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:33:21,241 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:33:21,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:33:21,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:33:21,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:33:21,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:33:21,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:33:21,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:33:21,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:33:21,276 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:33:21,277 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:33:21,277 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:33:21,277 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:33:21,278 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:33:21,278 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:33:21,279 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:33:21,279 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:33:21,280 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:33:21,280 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:33:21,281 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:33:21,282 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:33:21,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:33:21,283 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:33:21,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:33:21,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:33:21,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:33:21,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:33:21,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:33:21,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:33:21,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:33:21,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:33:21,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:33:21,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:33:21,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:33:21,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:33:21,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:33:21,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:33:21,289 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:33:21,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:33:21,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:33:21,290 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:33:21,290 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:33:21,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:33:21,290 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_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0705c7c1097399903dd015d79fa2944ad89b2d381aed5d9e2539b97c330aa424 [2023-12-02 13:33:21,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:33:21,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:33:21,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:33:21,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:33:21,546 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:33:21,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2023-12-02 13:33:24,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:33:24,931 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:33:24,932 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2023-12-02 13:33:24,979 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/data/851bdc561/635777a217564a51a28eddd32481cd07/FLAGd96dbb1cf [2023-12-02 13:33:24,995 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/data/851bdc561/635777a217564a51a28eddd32481cd07 [2023-12-02 13:33:24,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:33:24,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:33:25,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:33:25,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:33:25,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:33:25,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:33:24" (1/1) ... [2023-12-02 13:33:25,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25cfbef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:25, skipping insertion in model container [2023-12-02 13:33:25,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:33:24" (1/1) ... [2023-12-02 13:33:25,179 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:33:28,150 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_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i[351362,351375] [2023-12-02 13:33:28,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:33:28,222 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:33:28,365 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"); [5239] [2023-12-02 13:33:28,366 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)); [5246] [2023-12-02 13:33:28,367 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5253] [2023-12-02 13:33:28,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %1,%0": "=r" (ret): "m" (*((unsigned short volatile *)addr)): "memory"); [5385] [2023-12-02 13:33:28,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5393] [2023-12-02 13:33:28,374 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [5400] [2023-12-02 13:33:28,375 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5407] [2023-12-02 13:33:28,381 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)); [5592-5593] [2023-12-02 13:33:28,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [5599] [2023-12-02 13:33:28,394 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (164), "i" (12UL)); [5984-5985] [2023-12-02 13:33:28,396 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (180), "i" (12UL)); [6013-6014] [2023-12-02 13:33:28,404 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (210), "i" (12UL)); [6055-6056] [2023-12-02 13:33:28,406 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (229), "i" (12UL)); [6082-6083] [2023-12-02 13:33:28,413 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (269), "i" (12UL)); [6163-6164] [2023-12-02 13:33:28,416 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (303), "i" (12UL)); [6235-6236] [2023-12-02 13:33:28,418 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (335), "i" (12UL)); [6308-6309] [2023-12-02 13:33:28,419 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (369), "i" (12UL)); [6381-6382] [2023-12-02 13:33:28,444 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (811), "i" (12UL)); [7051-7052] [2023-12-02 13:33:28,445 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (812), "i" (12UL)); [7063-7064] [2023-12-02 13:33:28,487 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8170] [2023-12-02 13:33:28,502 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8473] [2023-12-02 13:33:28,529 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (2273), "i" (12UL)); [9243-9244] [2023-12-02 13:33:28,530 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (2275), "i" (12UL)); [9257-9258] [2023-12-02 13:33:28,531 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (2276), "i" (12UL)); [9269-9270] [2023-12-02 13:33:28,531 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 *)"drivers/net/ethernet/smsc/smsc911x.c"), "i" (2277), "i" (12UL)); [9281-9282] [2023-12-02 13:33:28,641 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_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i[351362,351375] [2023-12-02 13:33:28,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:33:28,836 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:33:28,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28 WrapperNode [2023-12-02 13:33:28,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:33:28,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:33:28,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:33:28,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:33:28,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:28,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,113 INFO L138 Inliner]: procedures = 415, calls = 1913, calls flagged for inlining = 249, calls inlined = 236, statements flattened = 6408 [2023-12-02 13:33:29,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:33:29,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:33:29,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:33:29,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:33:29,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:33:29,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:33:29,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:33:29,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:33:29,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (1/1) ... [2023-12-02 13:33:29,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:33:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:33:29,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:33:29,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:33:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 13:33:29,501 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 13:33:29,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 13:33:29,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 13:33:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-12-02 13:33:29,502 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-12-02 13:33:29,502 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 13:33:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 13:33:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mii_read [2023-12-02 13:33:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mii_read [2023-12-02 13:33:29,503 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_resume [2023-12-02 13:33:29,503 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_resume [2023-12-02 13:33:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 13:33:29,504 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 13:33:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 13:33:29,504 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 13:33:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_drv_probe [2023-12-02 13:33:29,504 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_drv_probe [2023-12-02 13:33:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure no_printk [2023-12-02 13:33:29,505 INFO L138 BoogieDeclarations]: Found implementation of procedure no_printk [2023-12-02 13:33:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 13:33:29,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 13:33:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 13:33:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 13:33:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-12-02 13:33:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-12-02 13:33:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 13:33:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 13:33:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 13:33:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 13:33:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 13:33:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 13:33:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_set_multicast_list [2023-12-02 13:33:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_set_multicast_list [2023-12-02 13:33:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_set_hw_mac_address [2023-12-02 13:33:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_set_hw_mac_address [2023-12-02 13:33:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2023-12-02 13:33:29,509 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2023-12-02 13:33:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2023-12-02 13:33:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2023-12-02 13:33:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:33:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-12-02 13:33:29,511 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-12-02 13:33:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_drv_remove [2023-12-02 13:33:29,511 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_drv_remove [2023-12-02 13:33:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_multicast_update [2023-12-02 13:33:29,511 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_multicast_update [2023-12-02 13:33:29,512 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 13:33:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 13:33:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 13:33:29,513 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 13:33:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 13:33:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-12-02 13:33:29,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-12-02 13:33:29,513 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 13:33:29,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 13:33:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_writefifo [2023-12-02 13:33:29,514 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_writefifo [2023-12-02 13:33:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 13:33:29,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 13:33:29,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 13:33:29,515 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_irqhandler [2023-12-02 13:33:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_irqhandler [2023-12-02 13:33:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:33:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 13:33:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 13:33:29,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2023-12-02 13:33:29,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2023-12-02 13:33:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 13:33:29,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 13:33:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_disable_resources [2023-12-02 13:33:29,517 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_disable_resources [2023-12-02 13:33:29,517 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_get_rxstatus [2023-12-02 13:33:29,517 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_get_rxstatus [2023-12-02 13:33:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_read [2023-12-02 13:33:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_read [2023-12-02 13:33:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_getregslen [2023-12-02 13:33:29,518 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_getregslen [2023-12-02 13:33:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:33:29,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 13:33:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 13:33:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 13:33:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 13:33:29,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-12-02 13:33:29,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-12-02 13:33:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2023-12-02 13:33:29,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2023-12-02 13:33:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:33:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-12-02 13:33:29,520 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-12-02 13:33:29,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 13:33:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 13:33:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 13:33:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 13:33:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:33:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 13:33:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 13:33:29,521 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-12-02 13:33:29,521 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-12-02 13:33:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 13:33:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 13:33:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mii_write [2023-12-02 13:33:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mii_write [2023-12-02 13:33:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_complete [2023-12-02 13:33:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_complete [2023-12-02 13:33:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-12-02 13:33:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-12-02 13:33:29,522 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 13:33:29,522 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 13:33:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-12-02 13:33:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-12-02 13:33:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32_rep [2023-12-02 13:33:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32_rep [2023-12-02 13:33:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-12-02 13:33:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-12-02 13:33:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource_byname [2023-12-02 13:33:29,523 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource_byname [2023-12-02 13:33:29,523 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-12-02 13:33:29,524 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-12-02 13:33:29,524 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 13:33:29,524 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 13:33:29,525 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2023-12-02 13:33:29,525 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2023-12-02 13:33:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:33:29,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:33:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 13:33:29,529 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 13:33:29,530 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-12-02 13:33:29,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-12-02 13:33:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_get_txstatus [2023-12-02 13:33:29,532 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_get_txstatus [2023-12-02 13:33:29,532 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-12-02 13:33:29,536 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-12-02 13:33:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2023-12-02 13:33:29,537 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2023-12-02 13:33:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 13:33:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 13:33:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 13:33:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 13:33:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_readfifo [2023-12-02 13:33:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_readfifo [2023-12-02 13:33:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_open [2023-12-02 13:33:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_open [2023-12-02 13:33:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2023-12-02 13:33:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2023-12-02 13:33:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_get_eeprom_len [2023-12-02 13:33:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_get_eeprom_len [2023-12-02 13:33:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_readfifo_shift [2023-12-02 13:33:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_readfifo_shift [2023-12-02 13:33:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_suspend [2023-12-02 13:33:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_suspend [2023-12-02 13:33:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_read_mac_address [2023-12-02 13:33:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_read_mac_address [2023-12-02 13:33:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_write [2023-12-02 13:33:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_write [2023-12-02 13:33:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2023-12-02 13:33:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2023-12-02 13:33:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 13:33:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 13:33:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 13:33:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 13:33:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-12-02 13:33:29,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-12-02 13:33:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_write [2023-12-02 13:33:29,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_write [2023-12-02 13:33:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:33:29,542 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 13:33:29,543 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 13:33:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:33:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_reg_write [2023-12-02 13:33:29,543 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_reg_write [2023-12-02 13:33:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_nwayreset [2023-12-02 13:33:29,543 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_nwayreset [2023-12-02 13:33:29,543 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_free_resources [2023-12-02 13:33:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_free_resources [2023-12-02 13:33:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_disable_irq_chip [2023-12-02 13:33:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_disable_irq_chip [2023-12-02 13:33:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:33:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 13:33:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 13:33:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-12-02 13:33:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-12-02 13:33:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 13:33:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 13:33:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_eeprom_send_cmd [2023-12-02 13:33:29,545 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_eeprom_send_cmd [2023-12-02 13:33:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 13:33:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 13:33:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_phy_adjust_link [2023-12-02 13:33:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_phy_adjust_link [2023-12-02 13:33:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_reg_read [2023-12-02 13:33:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_reg_read [2023-12-02 13:33:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 13:33:29,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 13:33:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-12-02 13:33:29,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-12-02 13:33:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_update_txcounters [2023-12-02 13:33:29,547 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_update_txcounters [2023-12-02 13:33:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_read_shift [2023-12-02 13:33:29,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_read_shift [2023-12-02 13:33:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 13:33:29,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 13:33:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_write_shift [2023-12-02 13:33:29,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_write_shift [2023-12-02 13:33:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 13:33:29,549 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 13:33:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 13:33:29,549 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 13:33:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2023-12-02 13:33:29,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2023-12-02 13:33:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-12-02 13:33:29,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-12-02 13:33:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_phy_enable_external [2023-12-02 13:33:29,550 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_phy_enable_external [2023-12-02 13:33:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:33:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_read [2023-12-02 13:33:29,550 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_read [2023-12-02 13:33:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 13:33:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 13:33:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-12-02 13:33:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-12-02 13:33:29,551 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-12-02 13:33:29,551 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-12-02 13:33:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc911x_cleanup_module_14_2 [2023-12-02 13:33:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc911x_cleanup_module_14_2 [2023-12-02 13:33:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_soft_reset [2023-12-02 13:33:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_soft_reset [2023-12-02 13:33:29,552 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_eeprom_enable_access [2023-12-02 13:33:29,552 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_eeprom_enable_access [2023-12-02 13:33:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2023-12-02 13:33:29,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2023-12-02 13:33:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure spin_is_locked [2023-12-02 13:33:29,553 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_is_locked [2023-12-02 13:33:29,553 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_stop [2023-12-02 13:33:29,553 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_stop [2023-12-02 13:33:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 13:33:29,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 13:33:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_writefifo_shift [2023-12-02 13:33:29,554 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_writefifo_shift [2023-12-02 13:33:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2023-12-02 13:33:29,554 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2023-12-02 13:33:29,554 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-12-02 13:33:29,555 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-12-02 13:33:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:33:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2023-12-02 13:33:29,555 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2023-12-02 13:33:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 13:33:29,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 13:33:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-12-02 13:33:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-12-02 13:33:30,546 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:33:30,551 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:33:31,010 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 13:33:35,048 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 13:33:35,224 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:33:37,879 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:33:37,879 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 13:33:37,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:33:37 BoogieIcfgContainer [2023-12-02 13:33:37,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:33:37,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:33:37,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:33:37,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:33:37,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:33:24" (1/3) ... [2023-12-02 13:33:37,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ced6032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:33:37, skipping insertion in model container [2023-12-02 13:33:37,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:33:28" (2/3) ... [2023-12-02 13:33:37,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ced6032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:33:37, skipping insertion in model container [2023-12-02 13:33:37,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:33:37" (3/3) ... [2023-12-02 13:33:37,891 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2023-12-02 13:33:37,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:33:37,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:33:38,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:33:38,008 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;@54f0f91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:33:38,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:33:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 2137 states, 1272 states have (on average 1.3034591194968554) internal successors, (1658), 1300 states have internal predecessors, (1658), 750 states have call successors, (750), 117 states have call predecessors, (750), 116 states have return successors, (741), 732 states have call predecessors, (741), 741 states have call successors, (741) [2023-12-02 13:33:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-02 13:33:38,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:33:38,052 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:33:38,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:33:38,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:33:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 755931983, now seen corresponding path program 1 times [2023-12-02 13:33:38,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:33:38,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540402066] [2023-12-02 13:33:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:33:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:33:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:33:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2023-12-02 13:33:38,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:33:38,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540402066] [2023-12-02 13:33:38,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540402066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:33:38,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:33:38,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:33:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486970392] [2023-12-02 13:33:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:33:38,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:33:38,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:33:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:33:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:33:38,921 INFO L87 Difference]: Start difference. First operand has 2137 states, 1272 states have (on average 1.3034591194968554) internal successors, (1658), 1300 states have internal predecessors, (1658), 750 states have call successors, (750), 117 states have call predecessors, (750), 116 states have return successors, (741), 732 states have call predecessors, (741), 741 states have call successors, (741) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-12-02 13:33:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:33:41,523 INFO L93 Difference]: Finished difference Result 6248 states and 9674 transitions. [2023-12-02 13:33:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:33:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 211 [2023-12-02 13:33:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:33:41,591 INFO L225 Difference]: With dead ends: 6248 [2023-12-02 13:33:41,591 INFO L226 Difference]: Without dead ends: 4137 [2023-12-02 13:33:41,622 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 [2023-12-02 13:33:41,626 INFO L413 NwaCegarLoop]: 2711 mSDtfsCounter, 3001 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3001 SdHoareTripleChecker+Valid, 5378 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:33:41,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3001 Valid, 5378 Invalid, 865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 13:33:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2023-12-02 13:33:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 4137. [2023-12-02 13:33:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 2471 states have (on average 1.2942128692836907) internal successors, (3198), 2528 states have internal predecessors, (3198), 1437 states have call successors, (1437), 229 states have call predecessors, (1437), 228 states have return successors, (1433), 1415 states have call predecessors, (1433), 1433 states have call successors, (1433) [2023-12-02 13:33:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6068 transitions. [2023-12-02 13:33:42,101 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6068 transitions. Word has length 211 [2023-12-02 13:33:42,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:33:42,103 INFO L495 AbstractCegarLoop]: Abstraction has 4137 states and 6068 transitions. [2023-12-02 13:33:42,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-12-02 13:33:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6068 transitions. [2023-12-02 13:33:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-02 13:33:42,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:33:42,123 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:33:42,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:33:42,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:33:42,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:33:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash -952570102, now seen corresponding path program 1 times [2023-12-02 13:33:42,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:33:42,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578021661] [2023-12-02 13:33:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:33:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:33:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:33:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2023-12-02 13:33:43,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:33:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578021661] [2023-12-02 13:33:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578021661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:33:43,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:33:43,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:33:43,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568796510] [2023-12-02 13:33:43,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:33:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:33:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:33:43,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:33:43,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:33:43,156 INFO L87 Difference]: Start difference. First operand 4137 states and 6068 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 13:33:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:33:45,419 INFO L93 Difference]: Finished difference Result 4143 states and 6073 transitions. [2023-12-02 13:33:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:33:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 253 [2023-12-02 13:33:45,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:33:45,471 INFO L225 Difference]: With dead ends: 4143 [2023-12-02 13:33:45,471 INFO L226 Difference]: Without dead ends: 4139 [2023-12-02 13:33:45,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:33:45,478 INFO L413 NwaCegarLoop]: 2674 mSDtfsCounter, 3040 mSDsluCounter, 5344 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 8018 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:33:45,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 8018 Invalid, 1271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 13:33:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2023-12-02 13:33:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 4139. [2023-12-02 13:33:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 2473 states have (on average 1.29357056207036) internal successors, (3199), 2529 states have internal predecessors, (3199), 1437 states have call successors, (1437), 230 states have call predecessors, (1437), 228 states have return successors, (1433), 1415 states have call predecessors, (1433), 1433 states have call successors, (1433) [2023-12-02 13:33:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 6069 transitions. [2023-12-02 13:33:45,842 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 6069 transitions. Word has length 253 [2023-12-02 13:33:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:33:45,844 INFO L495 AbstractCegarLoop]: Abstraction has 4139 states and 6069 transitions. [2023-12-02 13:33:45,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 13:33:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 6069 transitions. [2023-12-02 13:33:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-02 13:33:45,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:33:45,860 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:33:45,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:33:45,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:33:45,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:33:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1965746114, now seen corresponding path program 1 times [2023-12-02 13:33:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:33:45,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255075034] [2023-12-02 13:33:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:33:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:33:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:33:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2023-12-02 13:33:46,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:33:46,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255075034] [2023-12-02 13:33:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255075034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:33:46,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:33:46,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:33:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157083112] [2023-12-02 13:33:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:33:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:33:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:33:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:33:46,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:33:46,551 INFO L87 Difference]: Start difference. First operand 4139 states and 6069 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 13:33:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:33:49,827 INFO L93 Difference]: Finished difference Result 8233 states and 12114 transitions. [2023-12-02 13:33:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:33:49,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 262 [2023-12-02 13:33:49,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:33:49,902 INFO L225 Difference]: With dead ends: 8233 [2023-12-02 13:33:49,902 INFO L226 Difference]: Without dead ends: 8211 [2023-12-02 13:33:49,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:33:49,911 INFO L413 NwaCegarLoop]: 2713 mSDtfsCounter, 3024 mSDsluCounter, 8038 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3024 SdHoareTripleChecker+Valid, 10751 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:33:49,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3024 Valid, 10751 Invalid, 1695 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 13:33:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8211 states. [2023-12-02 13:33:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8211 to 8209. [2023-12-02 13:33:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8209 states, 4912 states have (on average 1.294584690553746) internal successors, (6359), 5024 states have internal predecessors, (6359), 2842 states have call successors, (2842), 456 states have call predecessors, (2842), 454 states have return successors, (2882), 2800 states have call predecessors, (2882), 2838 states have call successors, (2882) [2023-12-02 13:33:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8209 states to 8209 states and 12083 transitions. [2023-12-02 13:33:50,497 INFO L78 Accepts]: Start accepts. Automaton has 8209 states and 12083 transitions. Word has length 262 [2023-12-02 13:33:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:33:50,498 INFO L495 AbstractCegarLoop]: Abstraction has 8209 states and 12083 transitions. [2023-12-02 13:33:50,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 13:33:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 8209 states and 12083 transitions. [2023-12-02 13:33:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-02 13:33:50,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:33:50,541 INFO L195 NwaCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:33:50,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:33:50,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:33:50,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:33:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1367230246, now seen corresponding path program 1 times [2023-12-02 13:33:50,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:33:50,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10596521] [2023-12-02 13:33:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:33:50,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:33:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:33:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2910 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2902 trivial. 0 not checked. [2023-12-02 13:33:51,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:33:51,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10596521] [2023-12-02 13:33:51,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10596521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:33:51,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:33:51,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:33:51,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122432603] [2023-12-02 13:33:51,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:33:51,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:33:51,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:33:51,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:33:51,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:33:51,077 INFO L87 Difference]: Start difference. First operand 8209 states and 12083 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2023-12-02 13:33:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:33:54,596 INFO L93 Difference]: Finished difference Result 23841 states and 35035 transitions. [2023-12-02 13:33:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:33:54,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 521 [2023-12-02 13:33:54,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:33:54,766 INFO L225 Difference]: With dead ends: 23841 [2023-12-02 13:33:54,767 INFO L226 Difference]: Without dead ends: 15671 [2023-12-02 13:33:54,842 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 [2023-12-02 13:33:54,843 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 2715 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 6142 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:33:54,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2715 Valid, 6142 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 13:33:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15671 states. [2023-12-02 13:33:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15671 to 15650. [2023-12-02 13:33:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15650 states, 9314 states have (on average 1.2819411638393816) internal successors, (11940), 9535 states have internal predecessors, (11940), 5448 states have call successors, (5448), 889 states have call predecessors, (5448), 887 states have return successors, (5490), 5365 states have call predecessors, (5490), 5444 states have call successors, (5490) [2023-12-02 13:33:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15650 states to 15650 states and 22878 transitions. [2023-12-02 13:33:56,346 INFO L78 Accepts]: Start accepts. Automaton has 15650 states and 22878 transitions. Word has length 521 [2023-12-02 13:33:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:33:56,347 INFO L495 AbstractCegarLoop]: Abstraction has 15650 states and 22878 transitions. [2023-12-02 13:33:56,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2023-12-02 13:33:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand 15650 states and 22878 transitions. [2023-12-02 13:33:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-02 13:33:56,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:33:56,447 INFO L195 NwaCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:33:56,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:33:56,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:33:56,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:33:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2022117040, now seen corresponding path program 1 times [2023-12-02 13:33:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:33:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068565927] [2023-12-02 13:33:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:33:56,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:33:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:33:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3017 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3009 trivial. 0 not checked. [2023-12-02 13:33:57,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:33:57,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068565927] [2023-12-02 13:33:57,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068565927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:33:57,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:33:57,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:33:57,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022025835] [2023-12-02 13:33:57,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:33:57,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:33:57,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:33:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:33:57,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:33:57,216 INFO L87 Difference]: Start difference. First operand 15650 states and 22878 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2023-12-02 13:34:00,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:34:00,021 INFO L93 Difference]: Finished difference Result 30656 states and 44715 transitions. [2023-12-02 13:34:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:34:00,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) Word has length 515 [2023-12-02 13:34:00,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:34:00,113 INFO L225 Difference]: With dead ends: 30656 [2023-12-02 13:34:00,113 INFO L226 Difference]: Without dead ends: 15045 [2023-12-02 13:34:00,184 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 [2023-12-02 13:34:00,185 INFO L413 NwaCegarLoop]: 3508 mSDtfsCounter, 2953 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2953 SdHoareTripleChecker+Valid, 6153 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:34:00,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2953 Valid, 6153 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 13:34:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15045 states. [2023-12-02 13:34:01,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15045 to 15028. [2023-12-02 13:34:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15028 states, 9019 states have (on average 1.281738551945892) internal successors, (11560), 9236 states have internal predecessors, (11560), 5112 states have call successors, (5112), 900 states have call predecessors, (5112), 896 states have return successors, (5152), 5021 states have call predecessors, (5152), 5108 states have call successors, (5152) [2023-12-02 13:34:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15028 states to 15028 states and 21824 transitions. [2023-12-02 13:34:01,385 INFO L78 Accepts]: Start accepts. Automaton has 15028 states and 21824 transitions. Word has length 515 [2023-12-02 13:34:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:34:01,386 INFO L495 AbstractCegarLoop]: Abstraction has 15028 states and 21824 transitions. [2023-12-02 13:34:01,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2023-12-02 13:34:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 15028 states and 21824 transitions. [2023-12-02 13:34:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-02 13:34:01,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:34:01,452 INFO L195 NwaCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:34:01,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:34:01,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:34:01,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:34:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash 810523261, now seen corresponding path program 1 times [2023-12-02 13:34:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:34:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559667486] [2023-12-02 13:34:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:34:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:34:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:34:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3041 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3024 trivial. 0 not checked. [2023-12-02 13:34:02,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:34:02,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559667486] [2023-12-02 13:34:02,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559667486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:34:02,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:34:02,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:34:02,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955227199] [2023-12-02 13:34:02,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:34:02,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:34:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:34:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:34:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:34:02,281 INFO L87 Difference]: Start difference. First operand 15028 states and 21824 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 3 states have call predecessors, (72), 3 states have call successors, (72) [2023-12-02 13:34:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:34:05,171 INFO L93 Difference]: Finished difference Result 35134 states and 51075 transitions. [2023-12-02 13:34:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:34:05,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 3 states have call predecessors, (72), 3 states have call successors, (72) Word has length 520 [2023-12-02 13:34:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:34:05,311 INFO L225 Difference]: With dead ends: 35134 [2023-12-02 13:34:05,311 INFO L226 Difference]: Without dead ends: 21135 [2023-12-02 13:34:05,442 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 [2023-12-02 13:34:05,443 INFO L413 NwaCegarLoop]: 5209 mSDtfsCounter, 2946 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 7855 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:34:05,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 7855 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 13:34:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21135 states. [2023-12-02 13:34:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21135 to 21118. [2023-12-02 13:34:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21118 states, 12702 states have (on average 1.2826326562746024) internal successors, (16292), 13010 states have internal predecessors, (16292), 7147 states have call successors, (7147), 1274 states have call predecessors, (7147), 1268 states have return successors, (7208), 7015 states have call predecessors, (7208), 7143 states have call successors, (7208) [2023-12-02 13:34:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21118 states to 21118 states and 30647 transitions. [2023-12-02 13:34:06,531 INFO L78 Accepts]: Start accepts. Automaton has 21118 states and 30647 transitions. Word has length 520 [2023-12-02 13:34:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:34:06,532 INFO L495 AbstractCegarLoop]: Abstraction has 21118 states and 30647 transitions. [2023-12-02 13:34:06,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 3 states have call predecessors, (72), 3 states have call successors, (72) [2023-12-02 13:34:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 21118 states and 30647 transitions. [2023-12-02 13:34:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2023-12-02 13:34:06,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:34:06,585 INFO L195 NwaCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 12, 12, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:34:06,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 13:34:06,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:34:06,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:34:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash -871207552, now seen corresponding path program 1 times [2023-12-02 13:34:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:34:06,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749196262] [2023-12-02 13:34:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:34:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:34:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:34:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3292 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 3230 trivial. 0 not checked. [2023-12-02 13:34:08,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:34:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749196262] [2023-12-02 13:34:08,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749196262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:34:08,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958249762] [2023-12-02 13:34:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:34:08,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:34:08,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:34:08,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:34:08,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:34:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:34:09,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 4252 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 13:34:09,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:34:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3292 backedges. 50 proven. 1136 refuted. 0 times theorem prover too weak. 2106 trivial. 0 not checked. [2023-12-02 13:34:10,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:34:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3292 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3290 trivial. 0 not checked. [2023-12-02 13:34:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958249762] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 13:34:11,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:34:11,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 8] total 19 [2023-12-02 13:34:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705300182] [2023-12-02 13:34:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:34:11,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:34:11,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:34:11,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:34:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-02 13:34:11,902 INFO L87 Difference]: Start difference. First operand 21118 states and 30647 transitions. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 7 states have internal predecessors, (154), 3 states have call successors, (79), 4 states have call predecessors, (79), 2 states have return successors, (77), 4 states have call predecessors, (77), 3 states have call successors, (77) [2023-12-02 13:34:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:34:24,407 INFO L93 Difference]: Finished difference Result 32661 states and 47794 transitions. [2023-12-02 13:34:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:34:24,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 7 states have internal predecessors, (154), 3 states have call successors, (79), 4 states have call predecessors, (79), 2 states have return successors, (77), 4 states have call predecessors, (77), 3 states have call successors, (77) Word has length 565 [2023-12-02 13:34:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:34:24,590 INFO L225 Difference]: With dead ends: 32661 [2023-12-02 13:34:24,590 INFO L226 Difference]: Without dead ends: 32602 [2023-12-02 13:34:24,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1140 GetRequests, 1119 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-12-02 13:34:24,613 INFO L413 NwaCegarLoop]: 3155 mSDtfsCounter, 10515 mSDsluCounter, 8302 mSDsCounter, 0 mSdLazyCounter, 5634 mSolverCounterSat, 6341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11166 SdHoareTripleChecker+Valid, 11457 SdHoareTripleChecker+Invalid, 11975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6341 IncrementalHoareTripleChecker+Valid, 5634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:34:24,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11166 Valid, 11457 Invalid, 11975 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6341 Valid, 5634 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-02 13:34:24,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32602 states. [2023-12-02 13:34:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32602 to 32590. [2023-12-02 13:34:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32590 states, 19597 states have (on average 1.2840740929734142) internal successors, (25164), 20066 states have internal predecessors, (25164), 11118 states have call successors, (11118), 1873 states have call predecessors, (11118), 1874 states have return successors, (11379), 10931 states have call predecessors, (11379), 11114 states have call successors, (11379) [2023-12-02 13:34:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32590 states to 32590 states and 47661 transitions. [2023-12-02 13:34:26,757 INFO L78 Accepts]: Start accepts. Automaton has 32590 states and 47661 transitions. Word has length 565 [2023-12-02 13:34:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:34:26,758 INFO L495 AbstractCegarLoop]: Abstraction has 32590 states and 47661 transitions. [2023-12-02 13:34:26,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 7 states have internal predecessors, (154), 3 states have call successors, (79), 4 states have call predecessors, (79), 2 states have return successors, (77), 4 states have call predecessors, (77), 3 states have call successors, (77) [2023-12-02 13:34:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 32590 states and 47661 transitions. [2023-12-02 13:34:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-12-02 13:34:26,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:34:26,812 INFO L195 NwaCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 12, 12, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:34:26,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:34:27,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:34:27,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:34:27,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:34:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash -37714327, now seen corresponding path program 1 times [2023-12-02 13:34:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:34:27,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126134773] [2023-12-02 13:34:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:34:27,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:34:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:34:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3339 backedges. 51 proven. 10 refuted. 0 times theorem prover too weak. 3278 trivial. 0 not checked. [2023-12-02 13:34:29,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:34:29,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126134773] [2023-12-02 13:34:29,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126134773] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:34:29,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871009238] [2023-12-02 13:34:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:34:29,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:34:29,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:34:29,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:34:29,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:34:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:34:31,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 4428 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:34:31,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:34:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3339 backedges. 1402 proven. 0 refuted. 0 times theorem prover too weak. 1937 trivial. 0 not checked. [2023-12-02 13:34:32,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:34:32,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871009238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:34:32,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:34:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-02 13:34:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637016618] [2023-12-02 13:34:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:34:32,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:34:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:34:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:34:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:34:32,466 INFO L87 Difference]: Start difference. First operand 32590 states and 47661 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 3 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) [2023-12-02 13:34:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:34:36,547 INFO L93 Difference]: Finished difference Result 95099 states and 139244 transitions. [2023-12-02 13:34:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:34:36,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 3 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) Word has length 593 [2023-12-02 13:34:36,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:34:36,895 INFO L225 Difference]: With dead ends: 95099 [2023-12-02 13:34:36,895 INFO L226 Difference]: Without dead ends: 63538 [2023-12-02 13:34:37,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:34:37,021 INFO L413 NwaCegarLoop]: 3845 mSDtfsCounter, 2765 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2765 SdHoareTripleChecker+Valid, 6501 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:34:37,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2765 Valid, 6501 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 13:34:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63538 states. [2023-12-02 13:34:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63538 to 63528. [2023-12-02 13:34:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63528 states, 38252 states have (on average 1.2845341420056469) internal successors, (49136), 39148 states have internal predecessors, (49136), 21651 states have call successors, (21651), 3616 states have call predecessors, (21651), 3624 states have return successors, (22177), 21317 states have call predecessors, (22177), 21647 states have call successors, (22177) [2023-12-02 13:34:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63528 states to 63528 states and 92964 transitions. [2023-12-02 13:34:41,375 INFO L78 Accepts]: Start accepts. Automaton has 63528 states and 92964 transitions. Word has length 593 [2023-12-02 13:34:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:34:41,377 INFO L495 AbstractCegarLoop]: Abstraction has 63528 states and 92964 transitions. [2023-12-02 13:34:41,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 3 states have call successors, (87), 3 states have call predecessors, (87), 3 states have return successors, (85), 3 states have call predecessors, (85), 3 states have call successors, (85) [2023-12-02 13:34:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 63528 states and 92964 transitions. [2023-12-02 13:34:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-02 13:34:41,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:34:41,490 INFO L195 NwaCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 11, 11, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:34:41,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:34:41,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:34:41,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:34:41,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:34:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1859723094, now seen corresponding path program 1 times [2023-12-02 13:34:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:34:41,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437832892] [2023-12-02 13:34:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:34:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:34:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:34:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 56 proven. 10 refuted. 0 times theorem prover too weak. 3245 trivial. 0 not checked. [2023-12-02 13:34:43,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:34:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437832892] [2023-12-02 13:34:43,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437832892] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:34:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388450015] [2023-12-02 13:34:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:34:43,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:34:43,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:34:43,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:34:43,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a2fb2e-4ae9-40a7-b0dd-17f7d64051a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:34:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:34:45,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 4364 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 13:34:45,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:34:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 1374 proven. 19 refuted. 0 times theorem prover too weak. 1918 trivial. 0 not checked. [2023-12-02 13:34:46,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:34:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 3253 trivial. 0 not checked. [2023-12-02 13:34:46,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388450015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:34:46,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1135015486] [2023-12-02 13:34:46,637 INFO L159 IcfgInterpreter]: Started Sifa with 264 locations of interest [2023-12-02 13:34:46,638 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:34:46,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:34:46,646 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:34:46,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs