./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-mtd-sm_ftl.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-mtd-sm_ftl.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2 --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 37d59c797f3b43319090ff0a095e050456ceae93a2210ce04e39dd20e8f8f41e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:24:34,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:24:34,464 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 11:24:34,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:24:34,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:24:34,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:24:34,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:24:34,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:24:34,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:24:34,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:24:34,510 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:24:34,510 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:24:34,511 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:24:34,511 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:24:34,513 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:24:34,514 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:24:34,514 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:24:34,515 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:24:34,515 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:24:34,515 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:24:34,516 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:24:34,520 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:24:34,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:24:34,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:24:34,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:24:34,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:24:34,522 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:24:34,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:24:34,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:24:34,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:24:34,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:24:34,523 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:24:34,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:24:34,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:24:34,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:24:34,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:34,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:24:34,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:24:34,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:24:34,527 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:24:34,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:24:34,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:24:34,528 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:24:34,528 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:24:34,528 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_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d59c797f3b43319090ff0a095e050456ceae93a2210ce04e39dd20e8f8f41e [2024-11-02 11:24:34,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:24:34,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:24:34,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:24:34,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:24:34,862 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:24:34,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-mtd-sm_ftl.ko.cil.out.i Unable to find full path for "g++" [2024-11-02 11:24:36,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:24:37,587 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:24:37,588 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-mtd-sm_ftl.ko.cil.out.i [2024-11-02 11:24:37,636 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/data/0ff5725c6/17fd9dda87b14d3999ec61e7b312f360/FLAG48032609a [2024-11-02 11:24:37,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/data/0ff5725c6/17fd9dda87b14d3999ec61e7b312f360 [2024-11-02 11:24:37,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:24:37,665 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:24:37,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:37,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:24:37,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:24:37,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:37" (1/1) ... [2024-11-02 11:24:37,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3ca7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:37, skipping insertion in model container [2024-11-02 11:24:37,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:37" (1/1) ... [2024-11-02 11:24:37,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:24:39,124 WARN L251 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_6cf4e9dc-431f-40e4-a038-227e71496964/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-mtd-sm_ftl.ko.cil.out.i[172332,172345] [2024-11-02 11:24:39,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:39,271 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:24:39,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n" ".balign 4\n" ".long 671f - .\n" ".previous\n" "671:" "\n\tlock; " "btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [3447-3453] [2024-11-02 11:24:39,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\t" "sbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3460-3462] [2024-11-02 11:24:39,420 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("661:\n\t" "call __sw_hweight32" "\n662:\n" ".section .altinstructions,\"a\"\n" " " ".balign 8" " " "\n" " " ".quad" " " "661b\n" " " ".quad" " " "663f\n" "\t .word " "(4*32+23)" "\n" "\t .byte 662b-661b\n" "\t .byte 664f-663f\n" ".previous\n" ".section .discard,\"aw\",@progbits\n" "\t .byte 0xff + (664f-663f) - (662b-661b)\n" ".previous\n" ".section .altinstr_replacement, \"ax\"\n" "663:\n\t" ".byte 0xf3,0x40,0x0f,0xb8,0xc7" "\n664:\n" ".previous": "=a" (res): "D" (w)); [3473-3502] [2024-11-02 11:24:39,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/work/current--X--drivers/mtd/sm_ftl.ko--X--bulklinux-3.0.1--X--68_1/linux-3.0.1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/68_1/drivers/mtd/sm_ftl.c.common.c"), "i" (330), "i" (sizeof(struct bug_entry ))); [4334-4340] [2024-11-02 11:24:39,527 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/work/current--X--drivers/mtd/sm_ftl.ko--X--bulklinux-3.0.1--X--68_1/linux-3.0.1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/68_1/drivers/mtd/sm_ftl.c.common.c"), "i" (476), "i" (sizeof(struct bug_entry ))); [4605-4611] [2024-11-02 11:24:39,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/work/current--X--drivers/mtd/sm_ftl.ko--X--bulklinux-3.0.1--X--68_1/linux-3.0.1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/68_1/drivers/mtd/sm_ftl.c.common.c"), "i" (888), "i" (sizeof(struct bug_entry ))); [5380-5386] [2024-11-02 11:24:39,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/work/current--X--drivers/mtd/sm_ftl.ko--X--bulklinux-3.0.1--X--68_1/linux-3.0.1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/68_1/drivers/mtd/sm_ftl.c.common.c"), "i" (948), "i" (sizeof(struct bug_entry ))); [5524-5530] [2024-11-02 11:24:39,595 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n" ".pushsection __bug_table,\"a\"\n" "2:\t.long 1b - 2b, %c0 - 2b\n" "\t.word %c1, 0\n" "\t.org 2b+%c2\n" ".popsection": : "i" ("/anthill/stuff/tacas-comp/work/current--X--drivers/mtd/sm_ftl.ko--X--bulklinux-3.0.1--X--68_1/linux-3.0.1/csd_deg_dscv/11/dscv_tempdir/dscv/ri/68_1/drivers/mtd/sm_ftl.c.common.c"), "i" (1068), "i" (sizeof(struct bug_entry ))); [5764-5770] [2024-11-02 11:24:39,623 WARN L251 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_6cf4e9dc-431f-40e4-a038-227e71496964/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-mtd-sm_ftl.ko.cil.out.i[172332,172345] [2024-11-02 11:24:39,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:39,711 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:24:39,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39 WrapperNode [2024-11-02 11:24:39,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:39,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:39,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:24:39,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:24:39,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:39,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:39,994 INFO L138 Inliner]: procedures = 140, calls = 1027, calls flagged for inlining = 52, calls inlined = 50, statements flattened = 3304 [2024-11-02 11:24:39,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:39,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:24:39,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:24:39,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:24:40,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:24:40,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:24:40,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:24:40,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:24:40,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (1/1) ... [2024-11-02 11:24:40,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:40,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:40,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:24:40,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4e9dc-431f-40e4-a038-227e71496964/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:24:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure sm_get_zone [2024-11-02 11:24:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_get_zone [2024-11-02 11:24:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure sm_mark_block_bad [2024-11-02 11:24:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_mark_block_bad [2024-11-02 11:24:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 11:24:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-02 11:24:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2024-11-02 11:24:40,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2024-11-02 11:24:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 11:24:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 11:24:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure sm_recheck_media [2024-11-02 11:24:40,312 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_recheck_media [2024-11-02 11:24:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-02 11:24:40,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-02 11:24:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2024-11-02 11:24:40,313 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2024-11-02 11:24:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out_r [2024-11-02 11:24:40,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out_r [2024-11-02 11:24:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 11:24:40,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 11:24:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2024-11-02 11:24:40,316 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2024-11-02 11:24:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure __nand_correct_data [2024-11-02 11:24:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __nand_correct_data [2024-11-02 11:24:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-02 11:24:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-02 11:24:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure sm_mkoffset [2024-11-02 11:24:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_mkoffset [2024-11-02 11:24:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 11:24:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-02 11:24:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-02 11:24:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2024-11-02 11:24:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2024-11-02 11:24:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure sm_getgeo [2024-11-02 11:24:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_getgeo [2024-11-02 11:24:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure sm_cache_put [2024-11-02 11:24:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_cache_put [2024-11-02 11:24:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure sm_read_cis [2024-11-02 11:24:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_read_cis [2024-11-02 11:24:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2024-11-02 11:24:40,319 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2024-11-02 11:24:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-02 11:24:40,319 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-02 11:24:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure sm_get_lba [2024-11-02 11:24:40,319 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_get_lba [2024-11-02 11:24:40,319 INFO L130 BoogieDeclarations]: Found specification of procedure sm_read_lba [2024-11-02 11:24:40,319 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_read_lba [2024-11-02 11:24:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 11:24:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:24:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure sm_module_init [2024-11-02 11:24:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_module_init [2024-11-02 11:24:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 11:24:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 11:24:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure sm_check_block [2024-11-02 11:24:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_check_block [2024-11-02 11:24:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~$Pointer$~TO~int [2024-11-02 11:24:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~$Pointer$~TO~int [2024-11-02 11:24:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 11:24:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure sm_cache_init [2024-11-02 11:24:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_cache_init [2024-11-02 11:24:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure sm_sector_valid [2024-11-02 11:24:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_sector_valid [2024-11-02 11:24:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure sm_erase_block [2024-11-02 11:24:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_erase_block [2024-11-02 11:24:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2024-11-02 11:24:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2024-11-02 11:24:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure sm_module_exit [2024-11-02 11:24:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_module_exit [2024-11-02 11:24:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure sm_break_offset [2024-11-02 11:24:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_break_offset [2024-11-02 11:24:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure sm_read_sector [2024-11-02 11:24:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_read_sector [2024-11-02 11:24:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2024-11-02 11:24:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2024-11-02 11:24:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 11:24:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure sm_block_valid [2024-11-02 11:24:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_block_valid [2024-11-02 11:24:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 11:24:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 11:24:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2024-11-02 11:24:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2024-11-02 11:24:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_out [2024-11-02 11:24:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_out [2024-11-02 11:24:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-02 11:24:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-02 11:24:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-02 11:24:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-02 11:24:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2024-11-02 11:24:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2024-11-02 11:24:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure sm_write_sector [2024-11-02 11:24:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_write_sector [2024-11-02 11:24:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure __nand_calculate_ecc [2024-11-02 11:24:40,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __nand_calculate_ecc [2024-11-02 11:24:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2024-11-02 11:24:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2024-11-02 11:24:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:24:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure sm_cache_flush [2024-11-02 11:24:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure sm_cache_flush [2024-11-02 11:24:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in_r [2024-11-02 11:24:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in_r [2024-11-02 11:24:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_in [2024-11-02 11:24:40,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_in [2024-11-02 11:24:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-02 11:24:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:24:40,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:24:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-02 11:24:40,328 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-02 11:24:40,894 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:24:40,897 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:24:42,720 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-02 11:24:47,975 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !false; [2024-11-02 11:24:47,975 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume false; [2024-11-02 11:24:48,352 INFO L? ?]: Removed 926 outVars from TransFormulas that were not future-live. [2024-11-02 11:24:48,352 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:24:49,093 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:24:49,093 INFO L316 CfgBuilder]: Removed 36 assume(true) statements. [2024-11-02 11:24:49,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:49 BoogieIcfgContainer [2024-11-02 11:24:49,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:24:49,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:24:49,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:24:49,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:24:49,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:24:37" (1/3) ... [2024-11-02 11:24:49,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ed2a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:49, skipping insertion in model container [2024-11-02 11:24:49,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:39" (2/3) ... [2024-11-02 11:24:49,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ed2a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:49, skipping insertion in model container [2024-11-02 11:24:49,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:49" (3/3) ... [2024-11-02 11:24:49,107 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-mtd-sm_ftl.ko.cil.out.i [2024-11-02 11:24:49,129 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:24:49,129 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:24:49,247 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:24:49,254 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;@71d6a844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:24:49,255 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:24:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 743 states, 515 states have (on average 1.4252427184466019) internal successors, (734), 527 states have internal predecessors, (734), 180 states have call successors, (180), 46 states have call predecessors, (180), 46 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-02 11:24:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 11:24:49,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:49,274 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:49,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:24:49,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:49,281 INFO L85 PathProgramCache]: Analyzing trace with hash -63239260, now seen corresponding path program 1 times [2024-11-02 11:24:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807917735] [2024-11-02 11:24:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:49,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:55,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:55,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807917735] [2024-11-02 11:24:55,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807917735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:55,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:55,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:24:55,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948475207] [2024-11-02 11:24:55,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:55,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:24:55,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:24:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:55,246 INFO L87 Difference]: Start difference. First operand has 743 states, 515 states have (on average 1.4252427184466019) internal successors, (734), 527 states have internal predecessors, (734), 180 states have call successors, (180), 46 states have call predecessors, (180), 46 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 11:24:57,327 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 [] [2024-11-02 11:24:59,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 11:25:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:00,491 INFO L93 Difference]: Finished difference Result 1467 states and 2177 transitions. [2024-11-02 11:25:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:25:00,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-11-02 11:25:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:00,517 INFO L225 Difference]: With dead ends: 1467 [2024-11-02 11:25:00,517 INFO L226 Difference]: Without dead ends: 729 [2024-11-02 11:25:00,525 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 [2024-11-02 11:25:00,528 INFO L432 NwaCegarLoop]: 953 mSDtfsCounter, 1056 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:00,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 953 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 107 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2024-11-02 11:25:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-02 11:25:00,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 729. [2024-11-02 11:25:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 504 states have (on average 1.3630952380952381) internal successors, (687), 513 states have internal predecessors, (687), 179 states have call successors, (179), 46 states have call predecessors, (179), 45 states have return successors, (178), 178 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-02 11:25:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1044 transitions. [2024-11-02 11:25:00,655 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1044 transitions. Word has length 22 [2024-11-02 11:25:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:00,657 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1044 transitions. [2024-11-02 11:25:00,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 11:25:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1044 transitions. [2024-11-02 11:25:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 11:25:00,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:00,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:00,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:25:00,660 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:25:00,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:00,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1960767516, now seen corresponding path program 1 times [2024-11-02 11:25:00,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:00,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90459212] [2024-11-02 11:25:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:00,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:25:06,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:06,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90459212] [2024-11-02 11:25:06,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90459212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:06,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:06,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:25:06,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195841809] [2024-11-02 11:25:06,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:06,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:25:06,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:25:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:25:06,419 INFO L87 Difference]: Start difference. First operand 729 states and 1044 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)