./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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:06:59,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:06:59,963 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:06:59,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:06:59,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:00,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:00,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:00,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:00,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:00,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:00,020 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:00,022 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:00,022 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:00,024 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:00,024 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:00,024 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:00,025 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:00,025 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:00,026 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:00,026 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:00,027 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:00,027 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:00,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:00,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:00,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:00,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:00,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:00,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:00,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:00,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:00,032 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:00,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:00,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:00,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:00,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:00,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:00,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:00,034 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:00,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:00,035 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:00,035 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:00,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:00,035 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_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2023-11-19 05:07:00,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:00,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:00,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:00,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:00,403 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:00,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2023-11-19 05:07:03,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:04,013 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:04,015 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2023-11-19 05:07:04,071 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/data/2abde7ef1/9818c3d6d2a24829a219b53418384707/FLAG5e4f48132 [2023-11-19 05:07:04,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/data/2abde7ef1/9818c3d6d2a24829a219b53418384707 [2023-11-19 05:07:04,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:04,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:04,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:04,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:04,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:04,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:04" (1/1) ... [2023-11-19 05:07:04,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f30a19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:04, skipping insertion in model container [2023-11-19 05:07:04,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:04" (1/1) ... [2023-11-19 05:07:04,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:06,080 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2023-11-19 05:07:06,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:06,375 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:06,475 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"); [4245] [2023-11-19 05:07:06,477 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)); [4252] [2023-11-19 05:07:06,478 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [4266] [2023-11-19 05:07:06,478 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("661:\n\tcall __sw_hweight32\n662:\n.skip -(((6651f-6641f)-(662b-661b)) > 0) * ((6651f-6641f)-(662b-661b)),0x90\n663:\n.pushsection .altinstructions,\"a\"\n .long 661b - .\n .long 6641f - .\n .word ( 4*32+23)\n .byte 663b-661b\n .byte 6651f-6641f\n .byte 663b-662b\n.popsection\n.pushsection .altinstr_replacement, \"ax\"\n6641:\n\t.byte 0xf3,0x40,0x0f,0xb8,0xc7\n6651:\n\t.popsection": "=a" (res): "D" (w)); [4275] [2023-11-19 05:07:06,582 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--32_7a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/988/dscv_tempdir/dscv/ri/32_7a/drivers/md/dm-raid.c"), "i" (791), "i" (12UL)); [5389-5390] [2023-11-19 05:07:06,754 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2023-11-19 05:07:06,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:06,878 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:06,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06 WrapperNode [2023-11-19 05:07:06,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:06,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:06,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:06,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:06,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:06,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,165 INFO L138 Inliner]: procedures = 221, calls = 1690, calls flagged for inlining = 84, calls inlined = 76, statements flattened = 4850 [2023-11-19 05:07:07,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:07,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:07,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:07,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:07,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:07,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:07,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:07,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:07,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (1/1) ... [2023-11-19 05:07:07,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:07,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:07,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:07,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5531409-7fd6-4d16-97b0-4c483561beaf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:07,561 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2023-11-19 05:07:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2023-11-19 05:07:07,561 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2023-11-19 05:07:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2023-11-19 05:07:07,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:07:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:07:07,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:07:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:07:07,562 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-19 05:07:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-19 05:07:07,562 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_format [2023-11-19 05:07:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_format [2023-11-19 05:07:07,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:07:07,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:07:07,563 INFO L130 BoogieDeclarations]: Found specification of procedure raid_io_hints [2023-11-19 05:07:07,563 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_io_hints [2023-11-19 05:07:07,563 INFO L130 BoogieDeclarations]: Found specification of procedure raid_message [2023-11-19 05:07:07,563 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_message [2023-11-19 05:07:07,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:07:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:07:07,564 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-19 05:07:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-19 05:07:07,564 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_copies [2023-11-19 05:07:07,564 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_copies [2023-11-19 05:07:07,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:07:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:07:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:07:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:07:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure context_free [2023-11-19 05:07:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure context_free [2023-11-19 05:07:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:07:07,567 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:07:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-19 05:07:07,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-19 05:07:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure super_validate [2023-11-19 05:07:07,567 INFO L138 BoogieDeclarations]: Found implementation of procedure super_validate [2023-11-19 05:07:07,567 INFO L130 BoogieDeclarations]: Found specification of procedure do_table_event [2023-11-19 05:07:07,567 INFO L138 BoogieDeclarations]: Found implementation of procedure do_table_event [2023-11-19 05:07:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:07:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 05:07:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 05:07:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:07:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure sync_page_io [2023-11-19 05:07:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_page_io [2023-11-19 05:07:07,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:07:07,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:07:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure to_sector [2023-11-19 05:07:07,569 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sector [2023-11-19 05:07:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:07:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:07:07,569 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:07:07,569 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:07:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure raid_iterate_devices [2023-11-19 05:07:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_iterate_devices [2023-11-19 05:07:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2023-11-19 05:07:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2023-11-19 05:07:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2023-11-19 05:07:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2023-11-19 05:07:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:07:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_suspend [2023-11-19 05:07:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_suspend [2023-11-19 05:07:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 05:07:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 05:07:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure super_sync [2023-11-19 05:07:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure super_sync [2023-11-19 05:07:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:07:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2023-11-19 05:07:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2023-11-19 05:07:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2023-11-19 05:07:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2023-11-19 05:07:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:07:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:07:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:07:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure raid_merge [2023-11-19 05:07:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_merge [2023-11-19 05:07:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:07:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:07:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure raid_map [2023-11-19 05:07:07,573 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_map [2023-11-19 05:07:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:07:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2023-11-19 05:07:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2023-11-19 05:07:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2023-11-19 05:07:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2023-11-19 05:07:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure md_stop [2023-11-19 05:07:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure md_stop [2023-11-19 05:07:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure raid_status [2023-11-19 05:07:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_status [2023-11-19 05:07:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2023-11-19 05:07:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2023-11-19 05:07:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:07:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:07:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-19 05:07:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-19 05:07:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:07:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure raid_dtr [2023-11-19 05:07:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_dtr [2023-11-19 05:07:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2023-11-19 05:07:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2023-11-19 05:07:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:07:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:07:08,132 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:08,137 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:07:08,609 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:07:12,582 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:07:13,941 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:07:13,942 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:07:13,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:13 BoogieIcfgContainer [2023-11-19 05:07:13,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:07:13,963 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:07:13,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:07:13,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:07:13,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:04" (1/3) ... [2023-11-19 05:07:13,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c023e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:13, skipping insertion in model container [2023-11-19 05:07:13,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:06" (2/3) ... [2023-11-19 05:07:13,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c023e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:13, skipping insertion in model container [2023-11-19 05:07:13,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:13" (3/3) ... [2023-11-19 05:07:13,972 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2023-11-19 05:07:13,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:07:13,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:07:14,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:07:14,098 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d8719b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:07:14,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:07:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 1049 states, 735 states have (on average 1.4408163265306122) internal successors, (1059), 756 states have internal predecessors, (1059), 267 states have call successors, (267), 46 states have call predecessors, (267), 45 states have return successors, (263), 259 states have call predecessors, (263), 263 states have call successors, (263) [2023-11-19 05:07:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-19 05:07:14,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:14,133 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:14,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:14,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2000189246, now seen corresponding path program 1 times [2023-11-19 05:07:14,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:14,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028156924] [2023-11-19 05:07:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-19 05:07:15,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:15,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028156924] [2023-11-19 05:07:15,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028156924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:15,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:15,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323893957] [2023-11-19 05:07:15,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:15,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:15,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:15,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:15,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:15,343 INFO L87 Difference]: Start difference. First operand has 1049 states, 735 states have (on average 1.4408163265306122) internal successors, (1059), 756 states have internal predecessors, (1059), 267 states have call successors, (267), 46 states have call predecessors, (267), 45 states have return successors, (263), 259 states have call predecessors, (263), 263 states have call successors, (263) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 05:07:19,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-19 05:07:21,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:21,251 INFO L93 Difference]: Finished difference Result 3051 states and 4635 transitions. [2023-11-19 05:07:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:21,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 170 [2023-11-19 05:07:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:21,285 INFO L225 Difference]: With dead ends: 3051 [2023-11-19 05:07:21,285 INFO L226 Difference]: Without dead ends: 2023 [2023-11-19 05:07:21,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:21,303 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 1498 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:21,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2862 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 303 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2023-11-19 05:07:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2023-11-19 05:07:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2020. [2023-11-19 05:07:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1433 states have (on average 1.4375436147941383) internal successors, (2060), 1459 states have internal predecessors, (2060), 501 states have call successors, (501), 86 states have call predecessors, (501), 85 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-11-19 05:07:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3057 transitions. [2023-11-19 05:07:21,501 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3057 transitions. Word has length 170 [2023-11-19 05:07:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:21,502 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 3057 transitions. [2023-11-19 05:07:21,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 05:07:21,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3057 transitions. [2023-11-19 05:07:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-19 05:07:21,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:21,509 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:21,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:07:21,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:21,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1796878458, now seen corresponding path program 1 times [2023-11-19 05:07:21,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:21,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334960649] [2023-11-19 05:07:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:21,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-19 05:07:21,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:21,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334960649] [2023-11-19 05:07:21,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334960649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:21,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:21,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:21,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960171725] [2023-11-19 05:07:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:21,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:21,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:21,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:21,925 INFO L87 Difference]: Start difference. First operand 2020 states and 3057 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 05:07:23,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:23,464 INFO L93 Difference]: Finished difference Result 2022 states and 3058 transitions. [2023-11-19 05:07:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:23,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 177 [2023-11-19 05:07:23,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:23,482 INFO L225 Difference]: With dead ends: 2022 [2023-11-19 05:07:23,483 INFO L226 Difference]: Without dead ends: 2019 [2023-11-19 05:07:23,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:23,486 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1525 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:23,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1421 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 05:07:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2023-11-19 05:07:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2023-11-19 05:07:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1433 states have (on average 1.4368457780879273) internal successors, (2059), 1458 states have internal predecessors, (2059), 500 states have call successors, (500), 86 states have call predecessors, (500), 85 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-11-19 05:07:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3055 transitions. [2023-11-19 05:07:23,618 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3055 transitions. Word has length 177 [2023-11-19 05:07:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:23,620 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 3055 transitions. [2023-11-19 05:07:23,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 05:07:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3055 transitions. [2023-11-19 05:07:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-19 05:07:23,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:23,624 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:23,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:07:23,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:23,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:23,625 INFO L85 PathProgramCache]: Analyzing trace with hash -131724551, now seen corresponding path program 1 times [2023-11-19 05:07:23,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:23,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366963367] [2023-11-19 05:07:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-19 05:07:24,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366963367] [2023-11-19 05:07:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366963367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:24,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490571873] [2023-11-19 05:07:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:24,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:24,117 INFO L87 Difference]: Start difference. First operand 2019 states and 3055 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 05:07:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:26,313 INFO L93 Difference]: Finished difference Result 2021 states and 3056 transitions. [2023-11-19 05:07:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2023-11-19 05:07:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:26,329 INFO L225 Difference]: With dead ends: 2021 [2023-11-19 05:07:26,330 INFO L226 Difference]: Without dead ends: 2018 [2023-11-19 05:07:26,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:26,332 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 1522 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:26,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1419 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 05:07:26,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2023-11-19 05:07:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2018. [2023-11-19 05:07:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1433 states have (on average 1.4361479413817166) internal successors, (2058), 1457 states have internal predecessors, (2058), 499 states have call successors, (499), 86 states have call predecessors, (499), 85 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-11-19 05:07:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3053 transitions. [2023-11-19 05:07:26,458 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3053 transitions. Word has length 178 [2023-11-19 05:07:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:26,459 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3053 transitions. [2023-11-19 05:07:26,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 05:07:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3053 transitions. [2023-11-19 05:07:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 05:07:26,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:26,463 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:26,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:07:26,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:26,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash 211129181, now seen corresponding path program 1 times [2023-11-19 05:07:26,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:26,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255216003] [2023-11-19 05:07:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-19 05:07:26,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:26,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255216003] [2023-11-19 05:07:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255216003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:26,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:26,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401954444] [2023-11-19 05:07:26,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:26,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:26,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:26,869 INFO L87 Difference]: Start difference. First operand 2018 states and 3053 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 05:07:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:29,166 INFO L93 Difference]: Finished difference Result 2020 states and 3054 transitions. [2023-11-19 05:07:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:29,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 179 [2023-11-19 05:07:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:29,186 INFO L225 Difference]: With dead ends: 2020 [2023-11-19 05:07:29,187 INFO L226 Difference]: Without dead ends: 2017 [2023-11-19 05:07:29,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:29,193 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 1519 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:29,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1417 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 05:07:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2023-11-19 05:07:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2023-11-19 05:07:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1433 states have (on average 1.435450104675506) internal successors, (2057), 1456 states have internal predecessors, (2057), 498 states have call successors, (498), 86 states have call predecessors, (498), 85 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2023-11-19 05:07:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 3051 transitions. [2023-11-19 05:07:29,383 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 3051 transitions. Word has length 179 [2023-11-19 05:07:29,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:29,383 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 3051 transitions. [2023-11-19 05:07:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 05:07:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 3051 transitions. [2023-11-19 05:07:29,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-19 05:07:29,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:29,388 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:29,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:07:29,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:29,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2045302148, now seen corresponding path program 1 times [2023-11-19 05:07:29,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:29,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800588823] [2023-11-19 05:07:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:29,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-19 05:07:29,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:29,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800588823] [2023-11-19 05:07:29,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800588823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:29,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:29,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391389100] [2023-11-19 05:07:29,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:29,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:29,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:29,743 INFO L87 Difference]: Start difference. First operand 2017 states and 3051 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 05:07:34,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-19 05:07:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:34,854 INFO L93 Difference]: Finished difference Result 3977 states and 6024 transitions. [2023-11-19 05:07:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:34,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 180 [2023-11-19 05:07:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:34,887 INFO L225 Difference]: With dead ends: 3977 [2023-11-19 05:07:34,887 INFO L226 Difference]: Without dead ends: 3968 [2023-11-19 05:07:34,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:34,891 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 1498 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:34,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2788 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-11-19 05:07:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2023-11-19 05:07:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3968. [2023-11-19 05:07:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 2830 states have (on average 1.4378091872791519) internal successors, (4069), 2873 states have internal predecessors, (4069), 972 states have call successors, (972), 168 states have call predecessors, (972), 165 states have return successors, (970), 952 states have call predecessors, (970), 970 states have call successors, (970) [2023-11-19 05:07:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 6011 transitions. [2023-11-19 05:07:35,155 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 6011 transitions. Word has length 180 [2023-11-19 05:07:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:35,158 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 6011 transitions. [2023-11-19 05:07:35,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-19 05:07:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 6011 transitions. [2023-11-19 05:07:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-19 05:07:35,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:35,175 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 3, 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] [2023-11-19 05:07:35,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:07:35,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:35,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:35,176 INFO L85 PathProgramCache]: Analyzing trace with hash -507109833, now seen corresponding path program 1 times [2023-11-19 05:07:35,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:35,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286074027] [2023-11-19 05:07:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:35,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-11-19 05:07:35,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286074027] [2023-11-19 05:07:35,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286074027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:35,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:35,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:35,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890958650] [2023-11-19 05:07:35,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:35,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:35,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:35,671 INFO L87 Difference]: Start difference. First operand 3968 states and 6011 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-19 05:07:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:37,888 INFO L93 Difference]: Finished difference Result 8078 states and 12227 transitions. [2023-11-19 05:07:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:37,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 258 [2023-11-19 05:07:37,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:37,926 INFO L225 Difference]: With dead ends: 8078 [2023-11-19 05:07:37,927 INFO L226 Difference]: Without dead ends: 4145 [2023-11-19 05:07:37,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:37,950 INFO L413 NwaCegarLoop]: 1427 mSDtfsCounter, 126 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:37,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2690 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 05:07:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2023-11-19 05:07:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4137. [2023-11-19 05:07:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 2969 states have (on average 1.4392051195688784) internal successors, (4273), 3012 states have internal predecessors, (4273), 992 states have call successors, (992), 178 states have call predecessors, (992), 175 states have return successors, (990), 972 states have call predecessors, (990), 990 states have call successors, (990) [2023-11-19 05:07:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6255 transitions. [2023-11-19 05:07:38,301 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6255 transitions. Word has length 258 [2023-11-19 05:07:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:38,302 INFO L495 AbstractCegarLoop]: Abstraction has 4137 states and 6255 transitions. [2023-11-19 05:07:38,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-19 05:07:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6255 transitions. [2023-11-19 05:07:38,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-19 05:07:38,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:38,324 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2023-11-19 05:07:38,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:07:38,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:38,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1205682991, now seen corresponding path program 1 times [2023-11-19 05:07:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:38,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481702956] [2023-11-19 05:07:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-11-19 05:07:39,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:39,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481702956] [2023-11-19 05:07:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481702956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:39,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:39,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:07:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177726133] [2023-11-19 05:07:39,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:39,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:07:39,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:39,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:07:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:07:39,036 INFO L87 Difference]: Start difference. First operand 4137 states and 6255 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-19 05:07:40,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:07:41,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:07:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:45,406 INFO L93 Difference]: Finished difference Result 9264 states and 14147 transitions. [2023-11-19 05:07:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:07:45,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 276 [2023-11-19 05:07:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:45,456 INFO L225 Difference]: With dead ends: 9264 [2023-11-19 05:07:45,456 INFO L226 Difference]: Without dead ends: 5175 [2023-11-19 05:07:45,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:07:45,533 INFO L413 NwaCegarLoop]: 1767 mSDtfsCounter, 261 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:45,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 4970 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-19 05:07:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5175 states. [2023-11-19 05:07:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5175 to 4145. [2023-11-19 05:07:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 2977 states have (on average 1.438024857238831) internal successors, (4281), 3020 states have internal predecessors, (4281), 992 states have call successors, (992), 178 states have call predecessors, (992), 175 states have return successors, (990), 972 states have call predecessors, (990), 990 states have call successors, (990) [2023-11-19 05:07:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 6263 transitions. [2023-11-19 05:07:45,915 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 6263 transitions. Word has length 276 [2023-11-19 05:07:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:45,917 INFO L495 AbstractCegarLoop]: Abstraction has 4145 states and 6263 transitions. [2023-11-19 05:07:45,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-19 05:07:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 6263 transitions. [2023-11-19 05:07:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-19 05:07:45,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:45,940 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 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] [2023-11-19 05:07:45,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:07:45,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:45,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:45,942 INFO L85 PathProgramCache]: Analyzing trace with hash 263091012, now seen corresponding path program 1 times [2023-11-19 05:07:45,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:45,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544668491] [2023-11-19 05:07:45,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:45,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2023-11-19 05:07:46,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:46,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544668491] [2023-11-19 05:07:46,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544668491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:46,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:46,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:07:46,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750568767] [2023-11-19 05:07:46,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:46,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:07:46,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:46,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:07:46,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:07:46,719 INFO L87 Difference]: Start difference. First operand 4145 states and 6263 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)