./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/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_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje --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 0.2.5-dev-a016563 [2024-11-09 06:19:28,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:19:29,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 06:19:29,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:19:29,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:19:29,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:19:29,126 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:19:29,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:19:29,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:19:29,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:19:29,138 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:19:29,138 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:19:29,139 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:19:29,139 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:19:29,139 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:19:29,140 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:19:29,144 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:19:29,145 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:19:29,145 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:19:29,145 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:19:29,146 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:19:29,146 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:19:29,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:19:29,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:19:29,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:19:29,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:19:29,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:19:29,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:19:29,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:19:29,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:19:29,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:19:29,156 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:19:29,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:19:29,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:19:29,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:19:29,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:19:29,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:19:29,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:19:29,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:19:29,159 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:19:29,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:19:29,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:19:29,164 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:19:29,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:19:29,164 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2cd21de020202b17ab22d1f637da22fe399bf627634533bc700baf4ecfb7cc9 [2024-11-09 06:19:29,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:19:29,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:19:29,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:19:29,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:19:29,504 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:19:29,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/../../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++" [2024-11-09 06:19:31,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:19:32,141 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:19:32,142 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/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 [2024-11-09 06:19:32,203 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/data/cc64f8b97/7b9a0b6e96704cfd9101a8c06d922621/FLAGac7fdf682 [2024-11-09 06:19:32,222 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/data/cc64f8b97/7b9a0b6e96704cfd9101a8c06d922621 [2024-11-09 06:19:32,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:19:32,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:19:32,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:19:32,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:19:32,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:19:32,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:19:32" (1/1) ... [2024-11-09 06:19:32,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65415b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:32, skipping insertion in model container [2024-11-09 06:19:32,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:19:32" (1/1) ... [2024-11-09 06:19:32,424 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:19:35,869 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_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/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] [2024-11-09 06:19:35,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:19:35,986 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:19:36,202 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] [2024-11-09 06:19:36,204 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] [2024-11-09 06:19:36,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6528] [2024-11-09 06:19:36,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6531] [2024-11-09 06:19:36,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6534] [2024-11-09 06:19:36,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6537] [2024-11-09 06:19:36,211 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] [2024-11-09 06:19:36,221 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6833] [2024-11-09 06:19:36,224 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] [2024-11-09 06:19:36,250 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] [2024-11-09 06:19:36,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7569] [2024-11-09 06:19:36,316 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] [2024-11-09 06:19:36,318 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] [2024-11-09 06:19:36,319 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] [2024-11-09 06:19:36,322 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] [2024-11-09 06:19:36,354 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] [2024-11-09 06:19:36,355 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] [2024-11-09 06:19:36,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8149] [2024-11-09 06:19:36,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8151] [2024-11-09 06:19:36,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8186] [2024-11-09 06:19:36,512 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] [2024-11-09 06:19:36,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/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] [2024-11-09 06:19:36,541 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] [2024-11-09 06:19:36,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8992] [2024-11-09 06:19:36,666 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] [2024-11-09 06:19:36,668 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] [2024-11-09 06:19:36,722 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] [2024-11-09 06:19:36,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9432] [2024-11-09 06:19:36,724 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9469] [2024-11-09 06:19:36,725 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] [2024-11-09 06:19:36,742 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] [2024-11-09 06:19:36,744 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] [2024-11-09 06:19:36,747 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9633] [2024-11-09 06:19:36,747 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [9635] [2024-11-09 06:19:36,757 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] [2024-11-09 06:19:36,840 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] [2024-11-09 06:19:36,842 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] [2024-11-09 06:19:36,842 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] [2024-11-09 06:19:36,843 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] [2024-11-09 06:19:36,844 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] [2024-11-09 06:19:36,884 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] [2024-11-09 06:19:36,885 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] [2024-11-09 06:19:36,887 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] [2024-11-09 06:19:36,887 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] [2024-11-09 06:19:36,889 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] [2024-11-09 06:19:36,890 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [11895] [2024-11-09 06:19:36,901 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] [2024-11-09 06:19:36,930 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] [2024-11-09 06:19:36,931 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] [2024-11-09 06:19:36,931 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] [2024-11-09 06:19:36,946 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_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/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] [2024-11-09 06:19:36,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:19:37,167 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:19:37,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37 WrapperNode [2024-11-09 06:19:37,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:19:37,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:19:37,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:19:37,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:19:37,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,428 INFO L138 Inliner]: procedures = 425, calls = 3551, calls flagged for inlining = 209, calls inlined = 117, statements flattened = 4911 [2024-11-09 06:19:37,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:19:37,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:19:37,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:19:37,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:19:37,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:19:37,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:19:37,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:19:37,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:19:37,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (1/1) ... [2024-11-09 06:19:37,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:19:37,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:37,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:19:37,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:19:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2024-11-09 06:19:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2024-11-09 06:19:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2024-11-09 06:19:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2024-11-09 06:19:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2024-11-09 06:19:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2024-11-09 06:19:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-09 06:19:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-09 06:19:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2024-11-09 06:19:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2024-11-09 06:19:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2024-11-09 06:19:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2024-11-09 06:19:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2024-11-09 06:19:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2024-11-09 06:19:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 06:19:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 06:19:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2024-11-09 06:19:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2024-11-09 06:19:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2024-11-09 06:19:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2024-11-09 06:19:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2024-11-09 06:19:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2024-11-09 06:19:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2024-11-09 06:19:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2024-11-09 06:19:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2024-11-09 06:19:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2024-11-09 06:19:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-11-09 06:19:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-11-09 06:19:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure add_uevent_var [2024-11-09 06:19:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure add_uevent_var [2024-11-09 06:19:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-09 06:19:37,891 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-09 06:19:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2024-11-09 06:19:37,892 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2024-11-09 06:19:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2024-11-09 06:19:37,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2024-11-09 06:19:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2024-11-09 06:19:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2024-11-09 06:19:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2024-11-09 06:19:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2024-11-09 06:19:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-09 06:19:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-09 06:19:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2024-11-09 06:19:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2024-11-09 06:19:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 06:19:37,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 06:19:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2024-11-09 06:19:37,896 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2024-11-09 06:19:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:19:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2024-11-09 06:19:37,896 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2024-11-09 06:19:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-09 06:19:37,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-09 06:19:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-09 06:19:37,897 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-09 06:19:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-09 06:19:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2024-11-09 06:19:37,898 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2024-11-09 06:19:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2024-11-09 06:19:37,898 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2024-11-09 06:19:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2024-11-09 06:19:37,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2024-11-09 06:19:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 06:19:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2024-11-09 06:19:37,899 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2024-11-09 06:19:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:19:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-09 06:19:37,899 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-09 06:19:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2024-11-09 06:19:37,899 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2024-11-09 06:19:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2024-11-09 06:19:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2024-11-09 06:19:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2024-11-09 06:19:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2024-11-09 06:19:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2024-11-09 06:19:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2024-11-09 06:19:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2024-11-09 06:19:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2024-11-09 06:19:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-09 06:19:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-09 06:19:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2024-11-09 06:19:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2024-11-09 06:19:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:19:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2024-11-09 06:19:37,902 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2024-11-09 06:19:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:19:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:19:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2024-11-09 06:19:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2024-11-09 06:19:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2024-11-09 06:19:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2024-11-09 06:19:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2024-11-09 06:19:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2024-11-09 06:19:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2024-11-09 06:19:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2024-11-09 06:19:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_create_on_node [2024-11-09 06:19:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_create_on_node [2024-11-09 06:19:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2024-11-09 06:19:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2024-11-09 06:19:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2024-11-09 06:19:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2024-11-09 06:19:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2024-11-09 06:19:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2024-11-09 06:19:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:19:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:19:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-09 06:19:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-09 06:19:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 06:19:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 06:19:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2024-11-09 06:19:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2024-11-09 06:19:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-09 06:19:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-09 06:19:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2024-11-09 06:19:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2024-11-09 06:19:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2024-11-09 06:19:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2024-11-09 06:19:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2024-11-09 06:19:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2024-11-09 06:19:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2024-11-09 06:19:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2024-11-09 06:19:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2024-11-09 06:19:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2024-11-09 06:19:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-09 06:19:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-09 06:19:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2024-11-09 06:19:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2024-11-09 06:19:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2024-11-09 06:19:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2024-11-09 06:19:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2024-11-09 06:19:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2024-11-09 06:19:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2024-11-09 06:19:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2024-11-09 06:19:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-09 06:19:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-09 06:19:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 06:19:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 06:19:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:19:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:19:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2024-11-09 06:19:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2024-11-09 06:19:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2024-11-09 06:19:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2024-11-09 06:19:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2024-11-09 06:19:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2024-11-09 06:19:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2024-11-09 06:19:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2024-11-09 06:19:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2024-11-09 06:19:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2024-11-09 06:19:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:19:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2024-11-09 06:19:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2024-11-09 06:19:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2024-11-09 06:19:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2024-11-09 06:19:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2024-11-09 06:19:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2024-11-09 06:19:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:19:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2024-11-09 06:19:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2024-11-09 06:19:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2024-11-09 06:19:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2024-11-09 06:19:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2024-11-09 06:19:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2024-11-09 06:19:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2024-11-09 06:19:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2024-11-09 06:19:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 06:19:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 06:19:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-09 06:19:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-09 06:19:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-09 06:19:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-09 06:19:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2024-11-09 06:19:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2024-11-09 06:19:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-09 06:19:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-09 06:19:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2024-11-09 06:19:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2024-11-09 06:19:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2024-11-09 06:19:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2024-11-09 06:19:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2024-11-09 06:19:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2024-11-09 06:19:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2024-11-09 06:19:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2024-11-09 06:19:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-09 06:19:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-09 06:19:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:19:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2024-11-09 06:19:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2024-11-09 06:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-09 06:19:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-09 06:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_gather [2024-11-09 06:19:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_gather [2024-11-09 06:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2024-11-09 06:19:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2024-11-09 06:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2024-11-09 06:19:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2024-11-09 06:19:37,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-09 06:19:37,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-09 06:19:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2024-11-09 06:19:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2024-11-09 06:19:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2024-11-09 06:19:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2024-11-09 06:19:37,925 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2024-11-09 06:19:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2024-11-09 06:19:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2024-11-09 06:19:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2024-11-09 06:19:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2024-11-09 06:19:37,926 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2024-11-09 06:19:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:19:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2024-11-09 06:19:37,927 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2024-11-09 06:19:38,712 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:19:38,716 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:19:38,974 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-09 06:19:48,667 INFO L? ?]: Removed 1784 outVars from TransFormulas that were not future-live. [2024-11-09 06:19:48,667 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:19:49,957 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:19:49,957 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-09 06:19:49,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:19:49 BoogieIcfgContainer [2024-11-09 06:19:49,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:19:49,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:19:49,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:19:49,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:19:49,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:19:32" (1/3) ... [2024-11-09 06:19:49,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fd90cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:19:49, skipping insertion in model container [2024-11-09 06:19:49,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:37" (2/3) ... [2024-11-09 06:19:49,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fd90cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:19:49, skipping insertion in model container [2024-11-09 06:19:49,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:19:49" (3/3) ... [2024-11-09 06:19:49,968 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 [2024-11-09 06:19:49,989 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:19:49,989 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:19:50,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:19:50,144 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;@6fc26c0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:19:50,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:19:50,154 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) [2024-11-09 06:19:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:19:50,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:50,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:50,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:50,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash -143894058, now seen corresponding path program 1 times [2024-11-09 06:19:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:50,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975810782] [2024-11-09 06:19:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:02,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:02,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975810782] [2024-11-09 06:20:02,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975810782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:02,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:02,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:20:02,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711047948] [2024-11-09 06:20:02,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:02,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:20:02,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:02,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:20:02,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:02,410 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) [2024-11-09 06:20:04,565 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 [] [2024-11-09 06:20:10,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:11,078 INFO L93 Difference]: Finished difference Result 3529 states and 4974 transitions. [2024-11-09 06:20:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:20:11,083 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 [2024-11-09 06:20:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:11,119 INFO L225 Difference]: With dead ends: 3529 [2024-11-09 06:20:11,120 INFO L226 Difference]: Without dead ends: 2308 [2024-11-09 06:20:11,138 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 [2024-11-09 06:20:11,141 INFO L432 NwaCegarLoop]: 1463 mSDtfsCounter, 1629 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:11,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2923 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 369 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2024-11-09 06:20:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2024-11-09 06:20:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2298. [2024-11-09 06:20:11,393 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) [2024-11-09 06:20:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3200 transitions. [2024-11-09 06:20:11,423 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3200 transitions. Word has length 17 [2024-11-09 06:20:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:11,423 INFO L471 AbstractCegarLoop]: Abstraction has 2298 states and 3200 transitions. [2024-11-09 06:20:11,424 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) [2024-11-09 06:20:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3200 transitions. [2024-11-09 06:20:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 06:20:11,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:11,445 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] [2024-11-09 06:20:11,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:20:11,445 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:11,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2843364, now seen corresponding path program 1 times [2024-11-09 06:20:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:11,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656599829] [2024-11-09 06:20:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:11,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:20:23,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:23,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656599829] [2024-11-09 06:20:23,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656599829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:23,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:23,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:20:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151439031] [2024-11-09 06:20:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:23,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:20:23,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:20:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:20:23,070 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) [2024-11-09 06:20:25,154 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 [] [2024-11-09 06:20:27,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:31,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:33,309 INFO L93 Difference]: Finished difference Result 5371 states and 7462 transitions. [2024-11-09 06:20:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:20:33,310 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 [2024-11-09 06:20:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:33,333 INFO L225 Difference]: With dead ends: 5371 [2024-11-09 06:20:33,333 INFO L226 Difference]: Without dead ends: 3074 [2024-11-09 06:20:33,346 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 [2024-11-09 06:20:33,347 INFO L432 NwaCegarLoop]: 1442 mSDtfsCounter, 535 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s 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, 10.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:33,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 2854 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2024-11-09 06:20:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2024-11-09 06:20:33,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3066. [2024-11-09 06:20:33,504 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) [2024-11-09 06:20:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4254 transitions. [2024-11-09 06:20:33,525 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4254 transitions. Word has length 84 [2024-11-09 06:20:33,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:33,527 INFO L471 AbstractCegarLoop]: Abstraction has 3066 states and 4254 transitions. [2024-11-09 06:20:33,527 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) [2024-11-09 06:20:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4254 transitions. [2024-11-09 06:20:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 06:20:33,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:33,538 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] [2024-11-09 06:20:33,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:20:33,538 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:33,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1952215672, now seen corresponding path program 1 times [2024-11-09 06:20:33,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:33,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547108574] [2024-11-09 06:20:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 06:20:45,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:45,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547108574] [2024-11-09 06:20:45,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547108574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:45,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:45,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:20:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628440278] [2024-11-09 06:20:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:45,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:20:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:20:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:20:45,870 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) [2024-11-09 06:20:47,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:50,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:52,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:56,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:57,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:20:59,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:21:03,688 INFO L93 Difference]: Finished difference Result 6148 states and 8529 transitions. [2024-11-09 06:21:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:21:03,689 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 [2024-11-09 06:21:03,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:21:03,712 INFO L225 Difference]: With dead ends: 6148 [2024-11-09 06:21:03,713 INFO L226 Difference]: Without dead ends: 3077 [2024-11-09 06:21:03,729 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 [2024-11-09 06:21:03,730 INFO L432 NwaCegarLoop]: 1429 mSDtfsCounter, 6 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s 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, 17.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:21:03,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4281 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 555 Invalid, 4 Unknown, 0 Unchecked, 17.6s Time] [2024-11-09 06:21:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2024-11-09 06:21:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3069. [2024-11-09 06:21:03,864 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) [2024-11-09 06:21:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 4255 transitions. [2024-11-09 06:21:03,884 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 4255 transitions. Word has length 144 [2024-11-09 06:21:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:21:03,887 INFO L471 AbstractCegarLoop]: Abstraction has 3069 states and 4255 transitions. [2024-11-09 06:21:03,887 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) [2024-11-09 06:21:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 4255 transitions. [2024-11-09 06:21:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-09 06:21:03,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:21:03,897 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] [2024-11-09 06:21:03,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:21:03,897 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:21:03,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:21:03,898 INFO L85 PathProgramCache]: Analyzing trace with hash -720686713, now seen corresponding path program 1 times [2024-11-09 06:21:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:21:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135864333] [2024-11-09 06:21:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:21:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:21:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 06:21:13,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:21:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135864333] [2024-11-09 06:21:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135864333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:21:13,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:21:13,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:21:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391793380] [2024-11-09 06:21:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:21:13,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:21:13,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:21:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:21:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:21:13,646 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) [2024-11-09 06:21:15,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:17,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:21,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:25,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:21:25,866 INFO L93 Difference]: Finished difference Result 8138 states and 11258 transitions. [2024-11-09 06:21:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:21:25,867 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 [2024-11-09 06:21:25,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:21:25,908 INFO L225 Difference]: With dead ends: 8138 [2024-11-09 06:21:25,908 INFO L226 Difference]: Without dead ends: 5070 [2024-11-09 06:21:25,923 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 [2024-11-09 06:21:25,928 INFO L432 NwaCegarLoop]: 1932 mSDtfsCounter, 1577 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s 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, 11.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:21:25,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3139 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 451 Invalid, 2 Unknown, 0 Unchecked, 11.9s Time] [2024-11-09 06:21:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2024-11-09 06:21:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 5057. [2024-11-09 06:21:26,201 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) [2024-11-09 06:21:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 6978 transitions. [2024-11-09 06:21:26,239 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 6978 transitions. Word has length 147 [2024-11-09 06:21:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:21:26,241 INFO L471 AbstractCegarLoop]: Abstraction has 5057 states and 6978 transitions. [2024-11-09 06:21:26,241 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) [2024-11-09 06:21:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 6978 transitions. [2024-11-09 06:21:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-09 06:21:26,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:21:26,252 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] [2024-11-09 06:21:26,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:21:26,252 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:21:26,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:21:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash -871769990, now seen corresponding path program 1 times [2024-11-09 06:21:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:21:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398796426] [2024-11-09 06:21:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:21:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:21:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-09 06:21:42,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:21:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398796426] [2024-11-09 06:21:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398796426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:21:42,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:21:42,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 06:21:42,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597123849] [2024-11-09 06:21:42,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:21:42,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:21:42,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:21:42,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:21:42,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:21:42,088 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) [2024-11-09 06:21:44,175 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 [] [2024-11-09 06:21:46,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:48,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:50,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:52,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:55,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:57,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:21:59,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:04,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:06,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:08,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:09,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:11,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:13,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:15,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:27,423 INFO L93 Difference]: Finished difference Result 10145 states and 14025 transitions. [2024-11-09 06:22:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:22:27,424 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 [2024-11-09 06:22:27,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:27,464 INFO L225 Difference]: With dead ends: 10145 [2024-11-09 06:22:27,465 INFO L226 Difference]: Without dead ends: 5089 [2024-11-09 06:22:27,487 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 [2024-11-09 06:22:27,488 INFO L432 NwaCegarLoop]: 1430 mSDtfsCounter, 0 mSDsluCounter, 10002 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11432 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:27,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11432 Invalid, 1479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1467 Invalid, 12 Unknown, 0 Unchecked, 45.1s Time] [2024-11-09 06:22:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2024-11-09 06:22:27,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5073. [2024-11-09 06:22:27,733 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) [2024-11-09 06:22:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 7014 transitions. [2024-11-09 06:22:27,776 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 7014 transitions. Word has length 176 [2024-11-09 06:22:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:27,778 INFO L471 AbstractCegarLoop]: Abstraction has 5073 states and 7014 transitions. [2024-11-09 06:22:27,780 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) [2024-11-09 06:22:27,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 7014 transitions. [2024-11-09 06:22:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-09 06:22:27,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:27,790 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] [2024-11-09 06:22:27,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:22:27,791 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:27,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1844085606, now seen corresponding path program 1 times [2024-11-09 06:22:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:27,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349200794] [2024-11-09 06:22:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:27,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-09 06:22:40,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:40,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349200794] [2024-11-09 06:22:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349200794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:22:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766538512] [2024-11-09 06:22:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:40,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:22:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:40,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:22:40,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:22:40,066 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) [2024-11-09 06:22:42,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:44,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:46,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:48,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:50,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:55,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:57,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:59,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:07,853 INFO L93 Difference]: Finished difference Result 10199 states and 14127 transitions. [2024-11-09 06:23:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:23:07,854 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 [2024-11-09 06:23:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:07,898 INFO L225 Difference]: With dead ends: 10199 [2024-11-09 06:23:07,898 INFO L226 Difference]: Without dead ends: 5127 [2024-11-09 06:23:07,925 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 [2024-11-09 06:23:07,926 INFO L432 NwaCegarLoop]: 1418 mSDtfsCounter, 7 mSDsluCounter, 5651 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7069 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:07,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7069 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 981 Invalid, 6 Unknown, 0 Unchecked, 27.4s Time] [2024-11-09 06:23:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2024-11-09 06:23:08,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 5121. [2024-11-09 06:23:08,205 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) [2024-11-09 06:23:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 7068 transitions. [2024-11-09 06:23:08,243 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 7068 transitions. Word has length 190 [2024-11-09 06:23:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:08,245 INFO L471 AbstractCegarLoop]: Abstraction has 5121 states and 7068 transitions. [2024-11-09 06:23:08,246 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) [2024-11-09 06:23:08,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 7068 transitions. [2024-11-09 06:23:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-09 06:23:08,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:08,257 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] [2024-11-09 06:23:08,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:23:08,258 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:08,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1945399317, now seen corresponding path program 1 times [2024-11-09 06:23:08,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:23:08,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916443203] [2024-11-09 06:23:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:08,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-09 06:23:21,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:23:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916443203] [2024-11-09 06:23:21,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916443203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834353250] [2024-11-09 06:23:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:21,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:21,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:23:21,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:21,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:23:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:34,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 4961 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:23:34,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-09 06:23:35,104 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:23:35,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834353250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:35,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:23:35,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-09 06:23:35,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187906872] [2024-11-09 06:23:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:35,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:23:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:23:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:23:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:23:35,109 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) [2024-11-09 06:23:37,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:39,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:41,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:45,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:23:47,349 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 [] [2024-11-09 06:23:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:52,312 INFO L93 Difference]: Finished difference Result 10260 states and 14160 transitions. [2024-11-09 06:23:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:23:52,312 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 [2024-11-09 06:23:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:52,354 INFO L225 Difference]: With dead ends: 10260 [2024-11-09 06:23:52,354 INFO L226 Difference]: Without dead ends: 5131 [2024-11-09 06:23:52,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:23:52,381 INFO L432 NwaCegarLoop]: 1429 mSDtfsCounter, 6 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s 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, 17.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:52,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4281 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 552 Invalid, 4 Unknown, 0 Unchecked, 17.0s Time] [2024-11-09 06:23:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2024-11-09 06:23:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 5117. [2024-11-09 06:23:52,620 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) [2024-11-09 06:23:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7056 transitions. [2024-11-09 06:23:52,657 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7056 transitions. Word has length 191 [2024-11-09 06:23:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:52,657 INFO L471 AbstractCegarLoop]: Abstraction has 5117 states and 7056 transitions. [2024-11-09 06:23:52,657 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) [2024-11-09 06:23:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7056 transitions. [2024-11-09 06:23:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-09 06:23:52,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:52,667 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] [2024-11-09 06:23:52,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:23:52,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:52,869 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:52,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash 448171000, now seen corresponding path program 1 times [2024-11-09 06:23:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:23:52,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725702582] [2024-11-09 06:23:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:52,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:24:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:24:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-09 06:24:10,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:24:10,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725702582] [2024-11-09 06:24:10,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725702582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:24:10,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:24:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:24:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682571553] [2024-11-09 06:24:10,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:24:10,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:24:10,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:24:10,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:24:10,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:24:10,126 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) [2024-11-09 06:24:12,238 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 [] [2024-11-09 06:24:14,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:16,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:18,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:21,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:26,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:29,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:31,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:36,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:24:43,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:24:43,310 INFO L93 Difference]: Finished difference Result 10742 states and 14769 transitions. [2024-11-09 06:24:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:24:43,311 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 [2024-11-09 06:24:43,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:24:43,355 INFO L225 Difference]: With dead ends: 10742 [2024-11-09 06:24:43,355 INFO L226 Difference]: Without dead ends: 5626 [2024-11-09 06:24:43,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:24:43,382 INFO L432 NwaCegarLoop]: 1426 mSDtfsCounter, 509 mSDsluCounter, 7098 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 8524 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:24:43,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 8524 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1118 Invalid, 7 Unknown, 0 Unchecked, 32.5s Time] [2024-11-09 06:24:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2024-11-09 06:24:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5612. [2024-11-09 06:24:43,659 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) [2024-11-09 06:24:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 7674 transitions. [2024-11-09 06:24:43,704 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 7674 transitions. Word has length 209 [2024-11-09 06:24:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:24:43,706 INFO L471 AbstractCegarLoop]: Abstraction has 5612 states and 7674 transitions. [2024-11-09 06:24:43,707 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) [2024-11-09 06:24:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 7674 transitions. [2024-11-09 06:24:43,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-09 06:24:43,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:24:43,720 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] [2024-11-09 06:24:43,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:24:43,721 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:24:43,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:24:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash 101290568, now seen corresponding path program 1 times [2024-11-09 06:24:43,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:24:43,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987223730] [2024-11-09 06:24:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:24:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:24:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:24:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-09 06:24:59,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:24:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987223730] [2024-11-09 06:24:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987223730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:24:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966415202] [2024-11-09 06:24:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:24:59,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:24:59,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:24:59,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:24:59,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:25:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:14,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 5056 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 06:25:14,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-09 06:25:16,093 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:25:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966415202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:25:16,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:25:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2024-11-09 06:25:16,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747294581] [2024-11-09 06:25:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:25:16,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:25:16,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:25:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:25:16,096 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) [2024-11-09 06:25:18,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:20,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:22,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:24,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:27,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:29,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:31,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:40,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:41,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:43,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:45,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:25:48,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:26:04,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:26:06,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:26:09,483 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 [] [2024-11-09 06:26:26,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:26:26,049 INFO L93 Difference]: Finished difference Result 16246 states and 22246 transitions. [2024-11-09 06:26:26,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 06:26:26,050 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 [2024-11-09 06:26:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:26:26,170 INFO L225 Difference]: With dead ends: 16246 [2024-11-09 06:26:26,170 INFO L226 Difference]: Without dead ends: 10940 [2024-11-09 06:26:26,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-09 06:26:26,206 INFO L432 NwaCegarLoop]: 1420 mSDtfsCounter, 1607 mSDsluCounter, 8613 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 5 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 10033 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:26:26,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 10033 Invalid, 2900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 2882 Invalid, 13 Unknown, 0 Unchecked, 68.3s Time] [2024-11-09 06:26:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2024-11-09 06:26:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 10888. [2024-11-09 06:26:26,848 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) [2024-11-09 06:26:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10888 states to 10888 states and 14874 transitions. [2024-11-09 06:26:27,066 INFO L78 Accepts]: Start accepts. Automaton has 10888 states and 14874 transitions. Word has length 213 [2024-11-09 06:26:27,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:26:27,067 INFO L471 AbstractCegarLoop]: Abstraction has 10888 states and 14874 transitions. [2024-11-09 06:26:27,067 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) [2024-11-09 06:26:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 10888 states and 14874 transitions. [2024-11-09 06:26:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-09 06:26:27,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:26:27,088 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] [2024-11-09 06:26:27,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 06:26:27,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:26:27,289 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:26:27,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:26:27,293 INFO L85 PathProgramCache]: Analyzing trace with hash 464544691, now seen corresponding path program 1 times [2024-11-09 06:26:27,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:26:27,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854940435] [2024-11-09 06:26:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:26:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:26:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:26:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-09 06:26:42,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:26:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854940435] [2024-11-09 06:26:42,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854940435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:26:42,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954285541] [2024-11-09 06:26:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:26:42,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:26:42,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:26:42,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:26:42,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b354bb1-d6e5-4dd9-8e71-fa51c2a5f62c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:28:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:28:27,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 5079 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:28:27,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:28:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-09 06:28:28,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:28:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-09 06:28:32,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954285541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:28:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1338107949] [2024-11-09 06:28:32,683 INFO L159 IcfgInterpreter]: Started Sifa with 157 locations of interest [2024-11-09 06:28:32,683 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:28:32,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:28:32,702 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:28:32,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs