./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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E --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 b2cd21de020202b17ab22d1f637da22fe399bf627634533bc700baf4ecfb7cc9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:54:58,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:54:58,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 03:54:58,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:54:58,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:54:58,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:54:58,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:54:58,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:54:58,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:54:58,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:54:58,758 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:54:58,758 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:54:58,758 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:54:58,758 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:54:58,759 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:54:58,759 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:54:58,759 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:54:58,759 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:54:58,760 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:54:58,760 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:54:58,760 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:54:58,760 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:54:58,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:54:58,761 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:54:58,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:54:58,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:54:58,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:54:58,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:54:58,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:54:58,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:54:58,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:54:58,763 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:54:58,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:54:58,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:54:58,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:54:58,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:54:58,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:54:58,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:54:58,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:54:58,764 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:54:58,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:54:58,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:54:58,765 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:54:58,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:54:58,765 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E 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 -> b2cd21de020202b17ab22d1f637da22fe399bf627634533bc700baf4ecfb7cc9 [2024-11-14 03:54:59,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:54:59,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:54:59,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:54:59,165 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:54:59,166 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:54:59,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-14 03:55:01,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:55:02,623 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:55:02,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2024-11-14 03:55:02,731 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/data/13f37bd13/cd3e7cbfeab14bf28e91369f32f9acda/FLAGb8dd47708 [2024-11-14 03:55:02,757 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/data/13f37bd13/cd3e7cbfeab14bf28e91369f32f9acda [2024-11-14 03:55:02,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:55:02,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:55:02,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:55:02,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:55:02,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:55:02,778 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:55:02" (1/1) ... [2024-11-14 03:55:02,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209d99c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:02, skipping insertion in model container [2024-11-14 03:55:02,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:55:02" (1/1) ... [2024-11-14 03:55:02,997 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:55:06,916 WARN L250 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_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2024-11-14 03:55:07,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:55:07,074 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:55:07,296 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"); [6485] [2024-11-14 03:55:07,299 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"); [6493-6494] [2024-11-14 03:55:07,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6528] [2024-11-14 03:55:07,305 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6531] [2024-11-14 03:55:07,305 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6534] [2024-11-14 03:55:07,306 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6537] [2024-11-14 03:55:07,308 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)); [6580] [2024-11-14 03:55:07,320 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6833] [2024-11-14 03:55:07,327 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)); [6884-6885] [2024-11-14 03:55:07,351 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/skbuff.h"), "i" (1696), "i" (12UL)); [7111-7112] [2024-11-14 03:55:07,400 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7569] [2024-11-14 03:55:07,466 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (281), "i" (12UL)); [7710-7711] [2024-11-14 03:55:07,468 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (292), "i" (12UL)); [7723-7724] [2024-11-14 03:55:07,469 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (293), "i" (12UL)); [7731-7732] [2024-11-14 03:55:07,472 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (333), "i" (12UL)); [7778-7779] [2024-11-14 03:55:07,503 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (525), "i" (12UL)); [8078-8079] [2024-11-14 03:55:07,506 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (530), "i" (12UL)); [8090-8091] [2024-11-14 03:55:07,520 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8149] [2024-11-14 03:55:07,520 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8151] [2024-11-14 03:55:07,523 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8186] [2024-11-14 03:55:07,684 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (827), "i" (12UL)); [8472-8473] [2024-11-14 03:55:07,782 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (879), "i" (12UL)); [8552-8553] [2024-11-14 03:55:07,812 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (892), "i" (12UL)); [8571-8572] [2024-11-14 03:55:07,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8992] [2024-11-14 03:55:08,039 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1359), "i" (12UL)); [9180-9181] [2024-11-14 03:55:08,041 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1374), "i" (12UL)); [9210-9211] [2024-11-14 03:55:08,082 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1530), "i" (12UL)); [9424-9425] [2024-11-14 03:55:08,083 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9432] [2024-11-14 03:55:08,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9469] [2024-11-14 03:55:08,086 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1569), "i" (12UL)); [9475-9476] [2024-11-14 03:55:08,115 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1606), "i" (12UL)); [9523-9524] [2024-11-14 03:55:08,119 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1636), "i" (12UL)); [9572-9573] [2024-11-14 03:55:08,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9633] [2024-11-14 03:55:08,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [9635] [2024-11-14 03:55:08,136 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/netback.c"), "i" (1740), "i" (12UL)); [9681-9682] [2024-11-14 03:55:08,257 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (506), "i" (12UL)); [10924-10925] [2024-11-14 03:55:08,258 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (520), "i" (12UL)); [10942-10943] [2024-11-14 03:55:08,259 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (532), "i" (12UL)); [10958-10959] [2024-11-14 03:55:08,260 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (543), "i" (12UL)); [10973-10974] [2024-11-14 03:55:08,260 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/xenbus.c"), "i" (547), "i" (12UL)); [10981-10982] [2024-11-14 03:55:08,315 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)); [11798] [2024-11-14 03:55:08,315 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [11806-11807] [2024-11-14 03:55:08,316 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; decl %0": "+m" (v->counter)); [11825] [2024-11-14 03:55:08,318 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; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [11833-11834] [2024-11-14 03:55:08,320 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)); [11889-11890] [2024-11-14 03:55:08,320 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [11895] [2024-11-14 03:55:08,336 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/interface.c"), "i" (147), "i" (12UL)); [12122-12123] [2024-11-14 03:55:08,376 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/interface.c"), "i" (523), "i" (12UL)); [12641-12642] [2024-11-14 03:55:08,377 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/interface.c"), "i" (524), "i" (12UL)); [12650-12651] [2024-11-14 03:55:08,377 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--08_1a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/10967/dscv_tempdir/dscv/ri/08_1a/drivers/net/xen-netback/interface.c"), "i" (525), "i" (12UL)); [12659-12660] [2024-11-14 03:55:08,469 WARN L250 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_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2024-11-14 03:55:08,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:55:08,686 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:55:08,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08 WrapperNode [2024-11-14 03:55:08,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:55:08,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:55:08,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:55:08,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:55:08,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:08,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,062 INFO L138 Inliner]: procedures = 425, calls = 3551, calls flagged for inlining = 209, calls inlined = 117, statements flattened = 4911 [2024-11-14 03:55:09,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:55:09,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:55:09,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:55:09,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:55:09,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:55:09,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:55:09,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:55:09,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:55:09,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (1/1) ... [2024-11-14 03:55:09,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:55:09,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:55:09,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:55:09,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:55:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2024-11-14 03:55:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2024-11-14 03:55:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2024-11-14 03:55:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2024-11-14 03:55:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2024-11-14 03:55:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2024-11-14 03:55:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-14 03:55:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-14 03:55:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2024-11-14 03:55:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2024-11-14 03:55:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2024-11-14 03:55:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2024-11-14 03:55:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2024-11-14 03:55:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2024-11-14 03:55:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 03:55:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 03:55:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2024-11-14 03:55:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2024-11-14 03:55:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2024-11-14 03:55:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2024-11-14 03:55:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2024-11-14 03:55:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2024-11-14 03:55:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2024-11-14 03:55:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2024-11-14 03:55:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2024-11-14 03:55:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2024-11-14 03:55:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-11-14 03:55:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-11-14 03:55:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure add_uevent_var [2024-11-14 03:55:09,596 INFO L138 BoogieDeclarations]: Found implementation of procedure add_uevent_var [2024-11-14 03:55:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-14 03:55:09,596 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-14 03:55:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2024-11-14 03:55:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2024-11-14 03:55:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2024-11-14 03:55:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2024-11-14 03:55:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2024-11-14 03:55:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2024-11-14 03:55:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2024-11-14 03:55:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2024-11-14 03:55:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-14 03:55:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-14 03:55:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2024-11-14 03:55:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2024-11-14 03:55:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-14 03:55:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2024-11-14 03:55:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2024-11-14 03:55:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-14 03:55:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-14 03:55:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2024-11-14 03:55:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2024-11-14 03:55:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2024-11-14 03:55:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2024-11-14 03:55:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2024-11-14 03:55:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 03:55:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2024-11-14 03:55:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-14 03:55:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2024-11-14 03:55:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2024-11-14 03:55:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2024-11-14 03:55:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2024-11-14 03:55:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2024-11-14 03:55:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-14 03:55:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-14 03:55:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2024-11-14 03:55:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2024-11-14 03:55:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2024-11-14 03:55:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2024-11-14 03:55:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2024-11-14 03:55:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2024-11-14 03:55:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_create_on_node [2024-11-14 03:55:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_create_on_node [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2024-11-14 03:55:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2024-11-14 03:55:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2024-11-14 03:55:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2024-11-14 03:55:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:55:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-14 03:55:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2024-11-14 03:55:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-14 03:55:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2024-11-14 03:55:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2024-11-14 03:55:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2024-11-14 03:55:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2024-11-14 03:55:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2024-11-14 03:55:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2024-11-14 03:55:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2024-11-14 03:55:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2024-11-14 03:55:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2024-11-14 03:55:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-14 03:55:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-14 03:55:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2024-11-14 03:55:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2024-11-14 03:55:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2024-11-14 03:55:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2024-11-14 03:55:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2024-11-14 03:55:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2024-11-14 03:55:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2024-11-14 03:55:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2024-11-14 03:55:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-14 03:55:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-14 03:55:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 03:55:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 03:55:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:55:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:55:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2024-11-14 03:55:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2024-11-14 03:55:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2024-11-14 03:55:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2024-11-14 03:55:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2024-11-14 03:55:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2024-11-14 03:55:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2024-11-14 03:55:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2024-11-14 03:55:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2024-11-14 03:55:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2024-11-14 03:55:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:55:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2024-11-14 03:55:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2024-11-14 03:55:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2024-11-14 03:55:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2024-11-14 03:55:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2024-11-14 03:55:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2024-11-14 03:55:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2024-11-14 03:55:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-14 03:55:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-14 03:55:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-14 03:55:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-14 03:55:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-14 03:55:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-14 03:55:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2024-11-14 03:55:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2024-11-14 03:55:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-14 03:55:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-14 03:55:09,615 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2024-11-14 03:55:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_gather [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_gather [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2024-11-14 03:55:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2024-11-14 03:55:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2024-11-14 03:55:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-14 03:55:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-14 03:55:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2024-11-14 03:55:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2024-11-14 03:55:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2024-11-14 03:55:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2024-11-14 03:55:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2024-11-14 03:55:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2024-11-14 03:55:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2024-11-14 03:55:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2024-11-14 03:55:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2024-11-14 03:55:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2024-11-14 03:55:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:55:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2024-11-14 03:55:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2024-11-14 03:55:10,658 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:55:10,662 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:55:10,896 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-14 03:55:21,552 INFO L? ?]: Removed 1784 outVars from TransFormulas that were not future-live. [2024-11-14 03:55:21,552 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:55:23,242 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:55:23,242 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-14 03:55:23,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:55:23 BoogieIcfgContainer [2024-11-14 03:55:23,243 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:55:23,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:55:23,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:55:23,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:55:23,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:55:02" (1/3) ... [2024-11-14 03:55:23,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2ccb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:55:23, skipping insertion in model container [2024-11-14 03:55:23,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:55:08" (2/3) ... [2024-11-14 03:55:23,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2ccb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:55:23, skipping insertion in model container [2024-11-14 03:55:23,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:55:23" (3/3) ... [2024-11-14 03:55:23,257 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2024-11-14 03:55:23,281 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:55:23,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i that has 99 procedures, 1180 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2024-11-14 03:55:23,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:55:23,495 INFO L333 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, 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;@4a20e4ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:55:23,495 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:55:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 1179 states, 745 states have (on average 1.3261744966442952) internal successors, (988), 773 states have internal predecessors, (988), 335 states have call successors, (335), 98 states have call predecessors, (335), 97 states have return successors, (329), 321 states have call predecessors, (329), 329 states have call successors, (329) [2024-11-14 03:55:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 03:55:23,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:55:23,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:55:23,522 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:55:23,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:55:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash -143894058, now seen corresponding path program 1 times [2024-11-14 03:55:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:55:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725013311] [2024-11-14 03:55:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:55:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:55:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:55:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:55:36,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:55:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725013311] [2024-11-14 03:55:36,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725013311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:55:36,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:55:36,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:55:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199288022] [2024-11-14 03:55:36,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:55:36,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:55:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:55:36,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:55:36,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:55:36,704 INFO L87 Difference]: Start difference. First operand has 1179 states, 745 states have (on average 1.3261744966442952) internal successors, (988), 773 states have internal predecessors, (988), 335 states have call successors, (335), 98 states have call predecessors, (335), 97 states have return successors, (329), 321 states have call predecessors, (329), 329 states have call successors, (329) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:55:38,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:55:42,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:55:45,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:55:47,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:55:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:55:48,959 INFO L93 Difference]: Finished difference Result 3529 states and 4974 transitions. [2024-11-14 03:55:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:55:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-14 03:55:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:55:49,013 INFO L225 Difference]: With dead ends: 3529 [2024-11-14 03:55:49,013 INFO L226 Difference]: Without dead ends: 2308 [2024-11-14 03:55:49,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:55:49,046 INFO L432 NwaCegarLoop]: 1463 mSDtfsCounter, 1629 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:55:49,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2923 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2024-11-14 03:55:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2024-11-14 03:55:49,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2298. [2024-11-14 03:55:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 1453 states have (on average 1.3048864418444597) internal successors, (1896), 1492 states have internal predecessors, (1896), 653 states have call successors, (653), 192 states have call predecessors, (653), 191 states have return successors, (651), 634 states have call predecessors, (651), 651 states have call successors, (651) [2024-11-14 03:55:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3200 transitions. [2024-11-14 03:55:49,438 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3200 transitions. Word has length 17 [2024-11-14 03:55:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:55:49,439 INFO L471 AbstractCegarLoop]: Abstraction has 2298 states and 3200 transitions. [2024-11-14 03:55:49,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:55:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3200 transitions. [2024-11-14 03:55:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-14 03:55:49,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:55:49,463 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:55:49,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:55:49,465 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:55:49,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:55:49,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2843364, now seen corresponding path program 1 times [2024-11-14 03:55:49,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:55:49,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60956453] [2024-11-14 03:55:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:55:49,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:56:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:56:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 03:56:01,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:56:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60956453] [2024-11-14 03:56:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60956453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:56:01,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:56:01,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:56:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331219685] [2024-11-14 03:56:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:56:01,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:56:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:56:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:56:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:56:01,988 INFO L87 Difference]: Start difference. First operand 2298 states and 3200 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-14 03:56:04,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:56:06,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:56:09,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:56:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:56:13,038 INFO L93 Difference]: Finished difference Result 5371 states and 7462 transitions. [2024-11-14 03:56:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:56:13,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2024-11-14 03:56:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:56:13,076 INFO L225 Difference]: With dead ends: 5371 [2024-11-14 03:56:13,077 INFO L226 Difference]: Without dead ends: 3074 [2024-11-14 03:56:13,098 INFO L431 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 [2024-11-14 03:56:13,099 INFO L432 NwaCegarLoop]: 1442 mSDtfsCounter, 535 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:56:13,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 2854 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2024-11-14 03:56:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2024-11-14 03:56:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3066. [2024-11-14 03:56:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 1958 states have (on average 1.3186925434116445) internal successors, (2582), 2008 states have internal predecessors, (2582), 837 states have call successors, (837), 271 states have call predecessors, (837), 270 states have return successors, (835), 815 states have call predecessors, (835), 835 states have call successors, (835) [2024-11-14 03:56:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4254 transitions. [2024-11-14 03:56:13,373 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4254 transitions. Word has length 84 [2024-11-14 03:56:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:56:13,374 INFO L471 AbstractCegarLoop]: Abstraction has 3066 states and 4254 transitions. [2024-11-14 03:56:13,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-14 03:56:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4254 transitions. [2024-11-14 03:56:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-14 03:56:13,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:56:13,402 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-14 03:56:13,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:56:13,404 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:56:13,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:56:13,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1952215672, now seen corresponding path program 1 times [2024-11-14 03:56:13,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:56:13,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323189718] [2024-11-14 03:56:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:56:13,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:56:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:56:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-14 03:56:27,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:56:27,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323189718] [2024-11-14 03:56:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323189718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:56:27,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:56:27,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:56:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422962627] [2024-11-14 03:56:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:56:27,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:56:27,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:56:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:56:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:56:27,821 INFO L87 Difference]: Start difference. First operand 3066 states and 4254 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:56:29,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:56:32,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:56:34,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:56:39,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:56:41,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:56:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:56:45,813 INFO L93 Difference]: Finished difference Result 6148 states and 8529 transitions. [2024-11-14 03:56:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:56:45,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2024-11-14 03:56:45,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:56:45,849 INFO L225 Difference]: With dead ends: 6148 [2024-11-14 03:56:45,849 INFO L226 Difference]: Without dead ends: 3077 [2024-11-14 03:56:45,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:56:45,869 INFO L432 NwaCegarLoop]: 1429 mSDtfsCounter, 6 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:56:45,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4281 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 555 Invalid, 4 Unknown, 0 Unchecked, 17.8s Time] [2024-11-14 03:56:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2024-11-14 03:56:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3069. [2024-11-14 03:56:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 1961 states have (on average 1.3171851096379399) internal successors, (2583), 2011 states have internal predecessors, (2583), 837 states have call successors, (837), 271 states have call predecessors, (837), 270 states have return successors, (835), 815 states have call predecessors, (835), 835 states have call successors, (835) [2024-11-14 03:56:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 4255 transitions. [2024-11-14 03:56:46,076 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 4255 transitions. Word has length 144 [2024-11-14 03:56:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:56:46,078 INFO L471 AbstractCegarLoop]: Abstraction has 3069 states and 4255 transitions. [2024-11-14 03:56:46,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:56:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 4255 transitions. [2024-11-14 03:56:46,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-14 03:56:46,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:56:46,092 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-14 03:56:46,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:56:46,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:56:46,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:56:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash -720686713, now seen corresponding path program 1 times [2024-11-14 03:56:46,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:56:46,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062795268] [2024-11-14 03:56:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:56:46,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:56:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:56:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-14 03:56:58,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:56:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062795268] [2024-11-14 03:56:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062795268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:56:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:56:58,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:56:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925338835] [2024-11-14 03:56:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:56:58,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:56:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:56:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:56:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:56:58,016 INFO L87 Difference]: Start difference. First operand 3069 states and 4255 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:57:00,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:02,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:04,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:06,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:09,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:57:11,948 INFO L93 Difference]: Finished difference Result 8138 states and 11258 transitions. [2024-11-14 03:57:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:57:11,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 147 [2024-11-14 03:57:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:57:11,987 INFO L225 Difference]: With dead ends: 8138 [2024-11-14 03:57:11,988 INFO L226 Difference]: Without dead ends: 5070 [2024-11-14 03:57:12,003 INFO L431 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 [2024-11-14 03:57:12,004 INFO L432 NwaCegarLoop]: 1932 mSDtfsCounter, 1577 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:57:12,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3139 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 451 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2024-11-14 03:57:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2024-11-14 03:57:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 5057. [2024-11-14 03:57:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 3225 states have (on average 1.310387596899225) internal successors, (4226), 3312 states have internal predecessors, (4226), 1377 states have call successors, (1377), 455 states have call predecessors, (1377), 454 states have return successors, (1375), 1336 states have call predecessors, (1375), 1375 states have call successors, (1375) [2024-11-14 03:57:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 6978 transitions. [2024-11-14 03:57:12,296 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 6978 transitions. Word has length 147 [2024-11-14 03:57:12,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:57:12,298 INFO L471 AbstractCegarLoop]: Abstraction has 5057 states and 6978 transitions. [2024-11-14 03:57:12,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:57:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 6978 transitions. [2024-11-14 03:57:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-14 03:57:12,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:57:12,309 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-14 03:57:12,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:57:12,309 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:57:12,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:57:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash -871769990, now seen corresponding path program 1 times [2024-11-14 03:57:12,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:57:12,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914705952] [2024-11-14 03:57:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:57:12,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:57:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:57:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-14 03:57:27,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:57:27,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914705952] [2024-11-14 03:57:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914705952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:57:27,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:57:27,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-14 03:57:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633687590] [2024-11-14 03:57:27,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:57:27,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:57:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:57:27,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:57:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:57:27,400 INFO L87 Difference]: Start difference. First operand 5057 states and 6978 transitions. Second operand has 9 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-14 03:57:29,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:31,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:33,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:36,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:38,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:40,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:42,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:44,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:50,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:53,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:55,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:57,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:57:59,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:00,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:01,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:18,209 INFO L93 Difference]: Finished difference Result 10145 states and 14025 transitions. [2024-11-14 03:58:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:58:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 2 states have call successors, (23) Word has length 176 [2024-11-14 03:58:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:18,258 INFO L225 Difference]: With dead ends: 10145 [2024-11-14 03:58:18,258 INFO L226 Difference]: Without dead ends: 5089 [2024-11-14 03:58:18,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:58:18,295 INFO L432 NwaCegarLoop]: 1432 mSDtfsCounter, 0 mSDsluCounter, 10016 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11448 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:18,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11448 Invalid, 1479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1467 Invalid, 12 Unknown, 0 Unchecked, 50.5s Time] [2024-11-14 03:58:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2024-11-14 03:58:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5073. [2024-11-14 03:58:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 3235 states have (on average 1.3094281298299846) internal successors, (4236), 3322 states have internal predecessors, (4236), 1377 states have call successors, (1377), 455 states have call predecessors, (1377), 460 states have return successors, (1401), 1342 states have call predecessors, (1401), 1375 states have call successors, (1401) [2024-11-14 03:58:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 7014 transitions. [2024-11-14 03:58:18,703 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 7014 transitions. Word has length 176 [2024-11-14 03:58:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:18,706 INFO L471 AbstractCegarLoop]: Abstraction has 5073 states and 7014 transitions. [2024-11-14 03:58:18,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-14 03:58:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 7014 transitions. [2024-11-14 03:58:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-14 03:58:18,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:18,736 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-14 03:58:18,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:58:18,736 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:18,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1844085606, now seen corresponding path program 1 times [2024-11-14 03:58:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321187803] [2024-11-14 03:58:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-14 03:58:35,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:35,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321187803] [2024-11-14 03:58:35,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321187803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:35,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:58:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885654438] [2024-11-14 03:58:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:35,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:58:35,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:58:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:58:35,371 INFO L87 Difference]: Start difference. First operand 5073 states and 7014 transitions. Second operand has 6 states, 4 states have (on average 21.25) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-14 03:58:37,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:39,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:41,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:44,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:46,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:52,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:54,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:56,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:58,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:58:59,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:59:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:06,711 INFO L93 Difference]: Finished difference Result 10199 states and 14127 transitions. [2024-11-14 03:59:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:59:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 21.25) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 190 [2024-11-14 03:59:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:06,750 INFO L225 Difference]: With dead ends: 10199 [2024-11-14 03:59:06,750 INFO L226 Difference]: Without dead ends: 5127 [2024-11-14 03:59:06,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:59:06,778 INFO L432 NwaCegarLoop]: 1418 mSDtfsCounter, 7 mSDsluCounter, 5651 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 11 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7069 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:06,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7069 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 978 Invalid, 9 Unknown, 0 Unchecked, 31.0s Time] [2024-11-14 03:59:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2024-11-14 03:59:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 5121. [2024-11-14 03:59:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 3265 states have (on average 1.310260336906585) internal successors, (4278), 3352 states have internal predecessors, (4278), 1383 states have call successors, (1383), 467 states have call predecessors, (1383), 472 states have return successors, (1407), 1348 states have call predecessors, (1407), 1381 states have call successors, (1407) [2024-11-14 03:59:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 7068 transitions. [2024-11-14 03:59:07,090 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 7068 transitions. Word has length 190 [2024-11-14 03:59:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:07,091 INFO L471 AbstractCegarLoop]: Abstraction has 5121 states and 7068 transitions. [2024-11-14 03:59:07,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 21.25) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-14 03:59:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 7068 transitions. [2024-11-14 03:59:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-14 03:59:07,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:07,104 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-14 03:59:07,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:59:07,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:59:07,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1945399317, now seen corresponding path program 1 times [2024-11-14 03:59:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:07,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646881271] [2024-11-14 03:59:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:07,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-14 03:59:21,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:21,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646881271] [2024-11-14 03:59:21,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646881271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:21,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188437609] [2024-11-14 03:59:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:21,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:21,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:21,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:59:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:35,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 4961 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:59:36,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-14 03:59:36,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:59:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188437609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:36,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:59:36,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-14 03:59:36,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280138058] [2024-11-14 03:59:36,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:36,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:59:36,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:59:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:59:36,303 INFO L87 Difference]: Start difference. First operand 5121 states and 7068 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-14 03:59:38,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:59:40,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:59:42,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:59:46,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:59:47,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:59:49,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:59:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:55,329 INFO L93 Difference]: Finished difference Result 10260 states and 14160 transitions. [2024-11-14 03:59:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:59:55,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 191 [2024-11-14 03:59:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:55,373 INFO L225 Difference]: With dead ends: 10260 [2024-11-14 03:59:55,373 INFO L226 Difference]: Without dead ends: 5131 [2024-11-14 03:59:55,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:59:55,399 INFO L432 NwaCegarLoop]: 1429 mSDtfsCounter, 6 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:55,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4281 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 552 Invalid, 4 Unknown, 0 Unchecked, 18.8s Time] [2024-11-14 03:59:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2024-11-14 03:59:55,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 5117. [2024-11-14 03:59:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 3261 states have (on average 1.3081876724931003) internal successors, (4266), 3348 states have internal predecessors, (4266), 1383 states have call successors, (1383), 467 states have call predecessors, (1383), 472 states have return successors, (1407), 1348 states have call predecessors, (1407), 1381 states have call successors, (1407) [2024-11-14 03:59:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7056 transitions. [2024-11-14 03:59:55,674 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7056 transitions. Word has length 191 [2024-11-14 03:59:55,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:55,675 INFO L471 AbstractCegarLoop]: Abstraction has 5117 states and 7056 transitions. [2024-11-14 03:59:55,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-14 03:59:55,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7056 transitions. [2024-11-14 03:59:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-14 03:59:55,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:55,688 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-14 03:59:55,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:59:55,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:55,889 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:59:55,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:55,890 INFO L85 PathProgramCache]: Analyzing trace with hash 448171000, now seen corresponding path program 1 times [2024-11-14 03:59:55,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:55,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87535400] [2024-11-14 03:59:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-14 04:00:11,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:11,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87535400] [2024-11-14 04:00:11,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87535400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:11,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:00:11,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:00:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854122589] [2024-11-14 04:00:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:11,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:00:11,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:11,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:00:11,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:00:11,919 INFO L87 Difference]: Start difference. First operand 5117 states and 7056 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-14 04:00:14,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:16,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:18,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:20,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:22,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:28,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:30,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:31,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:33,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:39,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:41,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:43,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:00:49,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:49,600 INFO L93 Difference]: Finished difference Result 10742 states and 14769 transitions. [2024-11-14 04:00:49,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:00:49,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 209 [2024-11-14 04:00:49,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:49,671 INFO L225 Difference]: With dead ends: 10742 [2024-11-14 04:00:49,671 INFO L226 Difference]: Without dead ends: 5626 [2024-11-14 04:00:49,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:00:49,701 INFO L432 NwaCegarLoop]: 1426 mSDtfsCounter, 509 mSDsluCounter, 7098 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 3 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 8524 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:49,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 8524 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1117 Invalid, 9 Unknown, 0 Unchecked, 37.0s Time] [2024-11-14 04:00:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2024-11-14 04:00:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5612. [2024-11-14 04:00:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 3576 states have (on average 1.3064876957494407) internal successors, (4672), 3667 states have internal predecessors, (4672), 1486 states have call successors, (1486), 538 states have call predecessors, (1486), 549 states have return successors, (1516), 1457 states have call predecessors, (1516), 1484 states have call successors, (1516) [2024-11-14 04:00:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 7674 transitions. [2024-11-14 04:00:50,013 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 7674 transitions. Word has length 209 [2024-11-14 04:00:50,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:50,015 INFO L471 AbstractCegarLoop]: Abstraction has 5612 states and 7674 transitions. [2024-11-14 04:00:50,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-14 04:00:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 7674 transitions. [2024-11-14 04:00:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-14 04:00:50,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:50,032 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-14 04:00:50,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 04:00:50,032 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:00:50,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:50,033 INFO L85 PathProgramCache]: Analyzing trace with hash 101290568, now seen corresponding path program 1 times [2024-11-14 04:00:50,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:50,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568039515] [2024-11-14 04:00:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:50,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-14 04:01:08,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:08,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568039515] [2024-11-14 04:01:08,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568039515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:08,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052089770] [2024-11-14 04:01:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:08,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:08,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:08,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:08,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:01:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:22,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 5056 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 04:01:22,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-14 04:01:23,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:01:23,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052089770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:01:23,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:01:23,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2024-11-14 04:01:23,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762393368] [2024-11-14 04:01:23,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:01:23,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:01:23,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:01:23,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:01:23,902 INFO L87 Difference]: Start difference. First operand 5612 states and 7674 transitions. Second operand has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-14 04:01:25,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:28,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:30,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:32,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:34,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:36,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:39,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:46,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:48,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:52,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:01:54,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:02:08,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:02:10,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 04:02:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:23,656 INFO L93 Difference]: Finished difference Result 16246 states and 22246 transitions. [2024-11-14 04:02:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 04:02:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 213 [2024-11-14 04:02:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:23,734 INFO L225 Difference]: With dead ends: 16246 [2024-11-14 04:02:23,734 INFO L226 Difference]: Without dead ends: 10940 [2024-11-14 04:02:23,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:02:23,769 INFO L432 NwaCegarLoop]: 1420 mSDtfsCounter, 1607 mSDsluCounter, 8613 mSDsCounter, 0 mSdLazyCounter, 2884 mSolverCounterSat, 5 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 10033 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2884 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:23,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 10033 Invalid, 2899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 2884 Invalid, 10 Unknown, 0 Unchecked, 58.6s Time] [2024-11-14 04:02:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2024-11-14 04:02:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 10888. [2024-11-14 04:02:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10888 states, 6918 states have (on average 1.3029777392309916) internal successors, (9014), 7111 states have internal predecessors, (9014), 2884 states have call successors, (2884), 1040 states have call predecessors, (2884), 1085 states have return successors, (2976), 2833 states have call predecessors, (2976), 2882 states have call successors, (2976) [2024-11-14 04:02:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10888 states to 10888 states and 14874 transitions. [2024-11-14 04:02:24,285 INFO L78 Accepts]: Start accepts. Automaton has 10888 states and 14874 transitions. Word has length 213 [2024-11-14 04:02:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:24,285 INFO L471 AbstractCegarLoop]: Abstraction has 10888 states and 14874 transitions. [2024-11-14 04:02:24,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-14 04:02:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 10888 states and 14874 transitions. [2024-11-14 04:02:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-14 04:02:24,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:24,301 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-14 04:02:24,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:02:24,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:24,502 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:02:24,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:24,502 INFO L85 PathProgramCache]: Analyzing trace with hash 464544691, now seen corresponding path program 1 times [2024-11-14 04:02:24,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:24,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515435153] [2024-11-14 04:02:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-14 04:02:38,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:38,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515435153] [2024-11-14 04:02:38,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515435153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:38,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099222508] [2024-11-14 04:02:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:38,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:38,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:38,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:38,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf95281-d4f2-492f-9ac4-e377c8b2d23c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:04:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:04,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 5079 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:04:04,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-14 04:04:04,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-14 04:04:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099222508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:04:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1230101167] [2024-11-14 04:04:07,891 INFO L159 IcfgInterpreter]: Started Sifa with 157 locations of interest [2024-11-14 04:04:07,891 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:04:07,895 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:04:07,901 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:04:07,902 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs