./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ --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 c92cf9b42919bd0ad39ed67eff3f7cfedcded9ddd3bd80f0a39950ee91c5e90b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:36,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:36,368 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:07:36,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:36,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:36,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:36,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:36,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:36,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:36,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:36,417 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:36,417 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:36,418 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:36,418 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:36,419 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:36,419 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:36,420 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:36,421 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:36,421 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:36,422 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:36,423 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:36,423 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:36,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:36,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:36,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:36,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:36,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:36,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:36,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:36,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:36,432 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:36,432 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:36,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:36,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:36,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:36,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:36,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:36,435 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:36,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:36,436 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:36,436 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:36,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:36,437 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_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c92cf9b42919bd0ad39ed67eff3f7cfedcded9ddd3bd80f0a39950ee91c5e90b [2023-11-19 05:07:36,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:36,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:36,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:36,720 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:36,720 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:36,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2023-11-19 05:07:39,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:40,455 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:40,456 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2023-11-19 05:07:40,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/data/03f5510db/e09bca832f574100ae26f0cf44123aa7/FLAGd8c64d216 [2023-11-19 05:07:40,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/data/03f5510db/e09bca832f574100ae26f0cf44123aa7 [2023-11-19 05:07:40,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:40,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:40,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:40,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:40,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:40,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:40" (1/1) ... [2023-11-19 05:07:40,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5692ff5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:40, skipping insertion in model container [2023-11-19 05:07:40,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:40" (1/1) ... [2023-11-19 05:07:40,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:41,589 WARN L635 FunctionHandler]: implicit declaration of function ldv_undef_int [2023-11-19 05:07:41,591 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-19 05:07:43,528 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_beccf14c-e785-4760-b0eb-b70d45f60b9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319906,319919] [2023-11-19 05:07:43,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:43,667 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:43,810 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"); [6278] [2023-11-19 05:07:43,812 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)); [6285] [2023-11-19 05:07:43,813 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [6293-6294] [2023-11-19 05:07:43,815 WARN L635 FunctionHandler]: implicit declaration of function ldv_undef_int [2023-11-19 05:07:43,819 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-19 05:07:43,824 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; incl %0": "+m" (v->counter)); [6519] [2023-11-19 05:07:43,833 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/mm.h"), "i" (543), "i" (12UL)); [6705-6706] [2023-11-19 05:07:43,861 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" (507), "i" (12UL)); [7074-7075] [2023-11-19 05:07:43,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7080] [2023-11-19 05:07:43,963 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (303), "i" (12UL)); [7567-7568] [2023-11-19 05:07:43,964 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (307), "i" (12UL)); [7578-7579] [2023-11-19 05:07:43,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7607] [2023-11-19 05:07:43,967 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7610] [2023-11-19 05:07:43,967 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7612] [2023-11-19 05:07:43,979 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (369), "i" (12UL)); [7683-7684] [2023-11-19 05:07:43,979 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7691] [2023-11-19 05:07:43,981 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (388), "i" (12UL)); [7707-7708] [2023-11-19 05:07:43,983 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7729] [2023-11-19 05:07:43,985 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (431), "i" (12UL)); [7765-7766] [2023-11-19 05:07:43,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("add %%gs:%1, %0": "=r" (tcp_ptr__): "m" (this_cpu_off), "0" (np->tx_stats)); [7916] [2023-11-19 05:07:44,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8051] [2023-11-19 05:07:44,003 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8053] [2023-11-19 05:07:44,007 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (659), "i" (12UL)); [8116-8117] [2023-11-19 05:07:44,018 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (756), "i" (12UL)); [8256-8257] [2023-11-19 05:07:44,025 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (836), "i" (12UL)); [8373-8374] [2023-11-19 05:07:44,026 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 *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (839), "i" (12UL)); [8385-8386] [2023-11-19 05:07:44,029 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("add %%gs:%1, %0": "=r" (tcp_ptr__): "m" (this_cpu_off), "0" ((queue->info)->rx_stats)); [8448] [2023-11-19 05:07:44,047 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8520] [2023-11-19 05:07:44,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8602] [2023-11-19 05:07:44,055 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->rx_stats)); [8656] [2023-11-19 05:07:44,056 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr___0): "0" (np->tx_stats)); [8659] [2023-11-19 05:07:44,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (pcpu_stats)); [8981] [2023-11-19 05:07:44,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr___0): "0" (pcpu_stats___0)); [9005] [2023-11-19 05:07:44,217 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_beccf14c-e785-4760-b0eb-b70d45f60b9c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319906,319919] [2023-11-19 05:07:44,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:44,470 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:07:44,470 WARN L675 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:07:44,478 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:44,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44 WrapperNode [2023-11-19 05:07:44,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:44,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:44,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:44,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:44,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,843 INFO L138 Inliner]: procedures = 337, calls = 1940, calls flagged for inlining = 167, calls inlined = 140, statements flattened = 4841 [2023-11-19 05:07:44,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:44,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:44,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:44,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:44,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:45,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:45,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:45,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:45,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:45,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:45,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:45,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:45,151 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:45,152 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:45,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:45,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:45,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beccf14c-e785-4760-b0eb-b70d45f60b9c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:07:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2023-11-19 05:07:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2023-11-19 05:07:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:07:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:07:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:07:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:07:45,240 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:07:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-19 05:07:45,241 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-19 05:07:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_change_mtu [2023-11-19 05:07:45,241 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_change_mtu [2023-11-19 05:07:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-19 05:07:45,241 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-19 05:07:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2023-11-19 05:07:45,242 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2023-11-19 05:07:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-19 05:07:45,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-19 05:07:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-19 05:07:45,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-19 05:07:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:07:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:07:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-19 05:07:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-19 05:07:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-19 05:07:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-19 05:07:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_irq [2023-11-19 05:07:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_irq [2023-11-19 05:07:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2023-11-19 05:07:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2023-11-19 05:07:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-19 05:07:45,244 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-19 05:07:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_remove [2023-11-19 05:07:45,245 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_remove [2023-11-19 05:07:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure __alloc_percpu [2023-11-19 05:07:45,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __alloc_percpu [2023-11-19 05:07:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:07:45,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:07:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_make_txreqs [2023-11-19 05:07:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_make_txreqs [2023-11-19 05:07:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_destroy_queues [2023-11-19 05:07:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_destroy_queues [2023-11-19 05:07:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-19 05:07:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-19 05:07:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-19 05:07:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-19 05:07:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2023-11-19 05:07:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2023-11-19 05:07:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2023-11-19 05:07:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2023-11-19 05:07:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-19 05:07:45,248 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-19 05:07:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2023-11-19 05:07:45,248 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2023-11-19 05:07:45,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:07:45,248 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:07:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:07:45,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:07:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure netif_set_real_num_tx_queues [2023-11-19 05:07:45,249 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_set_real_num_tx_queues [2023-11-19 05:07:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2023-11-19 05:07:45,249 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2023-11-19 05:07:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2023-11-19 05:07:45,250 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2023-11-19 05:07:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_stats64 [2023-11-19 05:07:45,250 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_stats64 [2023-11-19 05:07:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:07:45,250 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:07:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2023-11-19 05:07:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2023-11-19 05:07:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-19 05:07:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-19 05:07:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2023-11-19 05:07:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2023-11-19 05:07:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-19 05:07:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-19 05:07:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:07:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-19 05:07:45,252 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-19 05:07:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:07:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2023-11-19 05:07:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2023-11-19 05:07:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2023-11-19 05:07:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2023-11-19 05:07:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2023-11-19 05:07:45,253 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2023-11-19 05:07:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-19 05:07:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-19 05:07:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-11-19 05:07:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-11-19 05:07:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2023-11-19 05:07:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2023-11-19 05:07:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:07:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-19 05:07:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-19 05:07:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-19 05:07:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-19 05:07:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-19 05:07:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-19 05:07:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2023-11-19 05:07:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2023-11-19 05:07:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:07:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:07:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:07:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:07:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2023-11-19 05:07:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2023-11-19 05:07:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:07:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-19 05:07:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-19 05:07:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:07:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure write_queue_xenstore_keys [2023-11-19 05:07:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure write_queue_xenstore_keys [2023-11-19 05:07:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:07:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:07:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2023-11-19 05:07:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2023-11-19 05:07:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-19 05:07:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-19 05:07:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2023-11-19 05:07:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2023-11-19 05:07:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2023-11-19 05:07:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2023-11-19 05:07:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2023-11-19 05:07:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2023-11-19 05:07:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 05:07:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 05:07:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 05:07:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 05:07:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf [2023-11-19 05:07:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf [2023-11-19 05:07:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2023-11-19 05:07:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2023-11-19 05:07:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-19 05:07:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-19 05:07:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2023-11-19 05:07:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2023-11-19 05:07:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:07:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_make_one_txreq [2023-11-19 05:07:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_make_one_txreq [2023-11-19 05:07:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-19 05:07:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-19 05:07:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2023-11-19 05:07:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2023-11-19 05:07:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-19 05:07:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-19 05:07:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 05:07:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 05:07:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:07:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:07:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:07:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-19 05:07:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-19 05:07:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:07:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2023-11-19 05:07:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2023-11-19 05:07:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_free_netdev [2023-11-19 05:07:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_free_netdev [2023-11-19 05:07:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure netback_changed [2023-11-19 05:07:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_changed [2023-11-19 05:07:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2023-11-19 05:07:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2023-11-19 05:07:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:07:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-11-19 05:07:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-11-19 05:07:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:07:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:07:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_select_queue [2023-11-19 05:07:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_select_queue [2023-11-19 05:07:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2023-11-19 05:07:45,267 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2023-11-19 05:07:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 05:07:45,267 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 05:07:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 05:07:45,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 05:07:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-19 05:07:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-19 05:07:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_init [2023-11-19 05:07:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_init [2023-11-19 05:07:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:07:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:07:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2023-11-19 05:07:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2023-11-19 05:07:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:07:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:07:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:07:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-19 05:07:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-19 05:07:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2023-11-19 05:07:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2023-11-19 05:07:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:07:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:07:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:07:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:07:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_fix_features [2023-11-19 05:07:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_fix_features [2023-11-19 05:07:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:07:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:07:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:07:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure get_phys_to_machine [2023-11-19 05:07:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure get_phys_to_machine [2023-11-19 05:07:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-19 05:07:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-19 05:07:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2023-11-19 05:07:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2023-11-19 05:07:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:07:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:07:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:07:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2023-11-19 05:07:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2023-11-19 05:07:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2023-11-19 05:07:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2023-11-19 05:07:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure show_rxbuf [2023-11-19 05:07:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure show_rxbuf [2023-11-19 05:07:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2023-11-19 05:07:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2023-11-19 05:07:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-19 05:07:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-19 05:07:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2023-11-19 05:07:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2023-11-19 05:07:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2023-11-19 05:07:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2023-11-19 05:07:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_set_features [2023-11-19 05:07:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_set_features [2023-11-19 05:07:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-19 05:07:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-19 05:07:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_irq [2023-11-19 05:07:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_irq [2023-11-19 05:07:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-19 05:07:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-19 05:07:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:07:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-19 05:07:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-19 05:07:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2023-11-19 05:07:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2023-11-19 05:07:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2023-11-19 05:07:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2023-11-19 05:07:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2023-11-19 05:07:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2023-11-19 05:07:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:07:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:07:46,059 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:46,064 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:07:47,218 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:07:52,787 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:07:54,180 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:07:54,180 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 05:07:54,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:54 BoogieIcfgContainer [2023-11-19 05:07:54,203 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:07:54,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:07:54,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:07:54,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:07:54,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:40" (1/3) ... [2023-11-19 05:07:54,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de9c729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:54, skipping insertion in model container [2023-11-19 05:07:54,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44" (2/3) ... [2023-11-19 05:07:54,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de9c729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:54, skipping insertion in model container [2023-11-19 05:07:54,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:54" (3/3) ... [2023-11-19 05:07:54,217 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2023-11-19 05:07:54,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:07:54,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:07:54,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:07:54,360 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;@44c80c69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:07:54,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:07:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 1318 states, 814 states have (on average 1.3427518427518428) internal successors, (1093), 853 states have internal predecessors, (1093), 390 states have call successors, (390), 113 states have call predecessors, (390), 112 states have return successors, (381), 374 states have call predecessors, (381), 381 states have call successors, (381) [2023-11-19 05:07:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-11-19 05:07:54,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:54,429 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:54,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:54,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:54,435 INFO L85 PathProgramCache]: Analyzing trace with hash 505375411, now seen corresponding path program 1 times [2023-11-19 05:07:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:54,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867810887] [2023-11-19 05:07:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-11-19 05:07:56,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867810887] [2023-11-19 05:07:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867810887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:56,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:56,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:56,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101956977] [2023-11-19 05:07:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:56,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:56,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:56,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:56,169 INFO L87 Difference]: Start difference. First operand has 1318 states, 814 states have (on average 1.3427518427518428) internal successors, (1093), 853 states have internal predecessors, (1093), 390 states have call successors, (390), 113 states have call predecessors, (390), 112 states have return successors, (381), 374 states have call predecessors, (381), 381 states have call successors, (381) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-19 05:07:59,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:59,076 INFO L93 Difference]: Finished difference Result 3278 states and 4631 transitions. [2023-11-19 05:07:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:59,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 343 [2023-11-19 05:07:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:59,118 INFO L225 Difference]: With dead ends: 3278 [2023-11-19 05:07:59,118 INFO L226 Difference]: Without dead ends: 1975 [2023-11-19 05:07:59,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:59,136 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 1038 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:59,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 3148 Invalid, 497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 05:07:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2023-11-19 05:07:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1971. [2023-11-19 05:07:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1234 states have (on average 1.3322528363047001) internal successors, (1644), 1272 states have internal predecessors, (1644), 554 states have call successors, (554), 183 states have call predecessors, (554), 182 states have return successors, (553), 542 states have call predecessors, (553), 553 states have call successors, (553) [2023-11-19 05:07:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2751 transitions. [2023-11-19 05:07:59,365 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2751 transitions. Word has length 343 [2023-11-19 05:07:59,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:59,367 INFO L495 AbstractCegarLoop]: Abstraction has 1971 states and 2751 transitions. [2023-11-19 05:07:59,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-19 05:07:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2751 transitions. [2023-11-19 05:07:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-11-19 05:07:59,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:59,379 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:59,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:07:59,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:59,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:59,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1080781016, now seen corresponding path program 1 times [2023-11-19 05:07:59,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:59,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692041720] [2023-11-19 05:07:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:59,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1464 trivial. 0 not checked. [2023-11-19 05:08:00,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692041720] [2023-11-19 05:08:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692041720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:00,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:00,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:00,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868285625] [2023-11-19 05:08:00,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:00,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:00,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:00,184 INFO L87 Difference]: Start difference. First operand 1971 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-19 05:08:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:02,772 INFO L93 Difference]: Finished difference Result 4921 states and 6855 transitions. [2023-11-19 05:08:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 346 [2023-11-19 05:08:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:02,798 INFO L225 Difference]: With dead ends: 4921 [2023-11-19 05:08:02,798 INFO L226 Difference]: Without dead ends: 3008 [2023-11-19 05:08:02,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:02,808 INFO L413 NwaCegarLoop]: 1768 mSDtfsCounter, 1331 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:02,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 3184 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 05:08:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2023-11-19 05:08:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2996. [2023-11-19 05:08:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 1895 states have (on average 1.3403693931398417) internal successors, (2540), 1967 states have internal predecessors, (2540), 817 states have call successors, (817), 286 states have call predecessors, (817), 283 states have return successors, (816), 788 states have call predecessors, (816), 816 states have call successors, (816) [2023-11-19 05:08:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4173 transitions. [2023-11-19 05:08:02,996 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4173 transitions. Word has length 346 [2023-11-19 05:08:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:02,997 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 4173 transitions. [2023-11-19 05:08:02,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-19 05:08:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4173 transitions. [2023-11-19 05:08:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-19 05:08:03,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:03,012 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 9, 9, 9, 9, 9, 9, 3, 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] [2023-11-19 05:08:03,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:08:03,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:03,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash 153837920, now seen corresponding path program 1 times [2023-11-19 05:08:03,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:03,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274632950] [2023-11-19 05:08:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:03,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2573 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2568 trivial. 0 not checked. [2023-11-19 05:08:04,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:04,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274632950] [2023-11-19 05:08:04,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274632950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:04,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:04,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:04,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885549779] [2023-11-19 05:08:04,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:04,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:04,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:04,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:04,059 INFO L87 Difference]: Start difference. First operand 2996 states and 4173 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-19 05:08:05,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:09,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:09,115 INFO L93 Difference]: Finished difference Result 5946 states and 8279 transitions. [2023-11-19 05:08:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:09,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 431 [2023-11-19 05:08:09,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:09,138 INFO L225 Difference]: With dead ends: 5946 [2023-11-19 05:08:09,138 INFO L226 Difference]: Without dead ends: 2996 [2023-11-19 05:08:09,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:09,152 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 3 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4751 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:09,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4751 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-19 05:08:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2023-11-19 05:08:09,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2996. [2023-11-19 05:08:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 1895 states have (on average 1.3361477572559366) internal successors, (2532), 1967 states have internal predecessors, (2532), 817 states have call successors, (817), 286 states have call predecessors, (817), 283 states have return successors, (816), 788 states have call predecessors, (816), 816 states have call successors, (816) [2023-11-19 05:08:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4165 transitions. [2023-11-19 05:08:09,334 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4165 transitions. Word has length 431 [2023-11-19 05:08:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:09,336 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 4165 transitions. [2023-11-19 05:08:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-19 05:08:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4165 transitions. [2023-11-19 05:08:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-11-19 05:08:09,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:09,351 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 9, 9, 9, 9, 9, 9, 3, 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] [2023-11-19 05:08:09,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:08:09,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:09,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:09,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1844873497, now seen corresponding path program 1 times [2023-11-19 05:08:09,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:09,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658997385] [2023-11-19 05:08:09,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:09,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2573 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2568 trivial. 0 not checked. [2023-11-19 05:08:10,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:10,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658997385] [2023-11-19 05:08:10,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658997385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:10,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:10,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246002549] [2023-11-19 05:08:10,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:10,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:10,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:10,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:10,129 INFO L87 Difference]: Start difference. First operand 2996 states and 4165 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2023-11-19 05:08:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:13,786 INFO L93 Difference]: Finished difference Result 7866 states and 10923 transitions. [2023-11-19 05:08:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:13,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 437 [2023-11-19 05:08:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:13,825 INFO L225 Difference]: With dead ends: 7866 [2023-11-19 05:08:13,825 INFO L226 Difference]: Without dead ends: 4928 [2023-11-19 05:08:13,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:13,840 INFO L413 NwaCegarLoop]: 2480 mSDtfsCounter, 1665 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:13,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 3956 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-19 05:08:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2023-11-19 05:08:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4923. [2023-11-19 05:08:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 3117 states have (on average 1.3333333333333333) internal successors, (4156), 3240 states have internal predecessors, (4156), 1333 states have call successors, (1333), 475 states have call predecessors, (1333), 472 states have return successors, (1332), 1288 states have call predecessors, (1332), 1332 states have call successors, (1332) [2023-11-19 05:08:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 6821 transitions. [2023-11-19 05:08:14,114 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 6821 transitions. Word has length 437 [2023-11-19 05:08:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:14,116 INFO L495 AbstractCegarLoop]: Abstraction has 4923 states and 6821 transitions. [2023-11-19 05:08:14,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2023-11-19 05:08:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 6821 transitions. [2023-11-19 05:08:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-11-19 05:08:14,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:14,130 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 9, 9, 9, 9, 9, 9, 3, 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] [2023-11-19 05:08:14,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:08:14,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:14,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash 74577806, now seen corresponding path program 1 times [2023-11-19 05:08:14,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:14,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453635936] [2023-11-19 05:08:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:14,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2573 trivial. 0 not checked. [2023-11-19 05:08:16,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:16,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453635936] [2023-11-19 05:08:16,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453635936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:16,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:16,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:16,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165013455] [2023-11-19 05:08:16,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:16,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:16,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:16,254 INFO L87 Difference]: Start difference. First operand 4923 states and 6821 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-11-19 05:08:19,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:19,076 INFO L93 Difference]: Finished difference Result 5264 states and 7135 transitions. [2023-11-19 05:08:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:19,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 436 [2023-11-19 05:08:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:19,122 INFO L225 Difference]: With dead ends: 5264 [2023-11-19 05:08:19,122 INFO L226 Difference]: Without dead ends: 5261 [2023-11-19 05:08:19,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:19,128 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 1341 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:19,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 3580 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 05:08:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2023-11-19 05:08:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2023-11-19 05:08:19,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 3296 states have (on average 1.3191747572815533) internal successors, (4348), 3423 states have internal predecessors, (4348), 1391 states have call successors, (1391), 576 states have call predecessors, (1391), 573 states have return successors, (1390), 1346 states have call predecessors, (1390), 1390 states have call successors, (1390) [2023-11-19 05:08:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7129 transitions. [2023-11-19 05:08:19,477 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7129 transitions. Word has length 436 [2023-11-19 05:08:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:19,479 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 7129 transitions. [2023-11-19 05:08:19,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-11-19 05:08:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7129 transitions. [2023-11-19 05:08:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-11-19 05:08:19,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:19,506 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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] [2023-11-19 05:08:19,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:08:19,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:19,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1699603858, now seen corresponding path program 1 times [2023-11-19 05:08:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:19,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734919608] [2023-11-19 05:08:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2801 trivial. 0 not checked. [2023-11-19 05:08:20,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:20,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734919608] [2023-11-19 05:08:20,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734919608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:20,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:20,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835025275] [2023-11-19 05:08:20,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:20,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:20,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:20,452 INFO L87 Difference]: Start difference. First operand 5261 states and 7129 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53)