./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 a0165632 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_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/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_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:11:28,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:11:29,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 07:11:29,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:11:29,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:11:29,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:11:29,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:11:29,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:11:29,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:11:29,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:11:29,082 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:11:29,083 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:11:29,084 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:11:29,084 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:11:29,085 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:11:29,085 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:11:29,086 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:11:29,086 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:11:29,087 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:11:29,087 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:11:29,088 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:11:29,089 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:11:29,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:11:29,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:11:29,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:11:29,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:11:29,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:11:29,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:11:29,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:11:29,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:11:29,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:11:29,101 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:11:29,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:11:29,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:11:29,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:11:29,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:11:29,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:11:29,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:11:29,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:11:29,105 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:11:29,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:11:29,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:11:29,106 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:11:29,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:11:29,107 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_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2024-11-09 07:11:29,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:11:29,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:11:29,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:11:29,548 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:11:29,549 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:11:29,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/../../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 Unable to find full path for "g++" [2024-11-09 07:11:32,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:11:32,787 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:11:32,788 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/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 [2024-11-09 07:11:32,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/data/c60e5fae2/c28738c3ec294fa788ba0102e50df60e/FLAG5017adcbc [2024-11-09 07:11:32,870 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/data/c60e5fae2/c28738c3ec294fa788ba0102e50df60e [2024-11-09 07:11:32,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:11:32,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:11:32,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:11:32,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:11:32,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:11:32,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:11:32" (1/1) ... [2024-11-09 07:11:32,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba000b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:32, skipping insertion in model container [2024-11-09 07:11:32,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:11:32" (1/1) ... [2024-11-09 07:11:33,178 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:11:35,439 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/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] [2024-11-09 07:11:35,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:11:35,683 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:11:35,867 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] [2024-11-09 07:11:35,869 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] [2024-11-09 07:11:35,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [4266] [2024-11-09 07:11:35,875 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] [2024-11-09 07:11:35,976 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] [2024-11-09 07:11:36,209 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/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] [2024-11-09 07:11:36,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:11:36,349 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:11:36,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36 WrapperNode [2024-11-09 07:11:36,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:11:36,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:11:36,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:11:36,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:11:36,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,707 INFO L138 Inliner]: procedures = 222, calls = 1690, calls flagged for inlining = 84, calls inlined = 76, statements flattened = 5079 [2024-11-09 07:11:36,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:11:36,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:11:36,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:11:36,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:11:36,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:36,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:11:36,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:11:36,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:11:36,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:11:36,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (1/1) ... [2024-11-09 07:11:37,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:11:37,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:11:37,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:11:37,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:11:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure dm_table_get_mode [2024-11-09 07:11:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_table_get_mode [2024-11-09 07:11:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2024-11-09 07:11:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2024-11-09 07:11:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 07:11:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-09 07:11:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-09 07:11:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-09 07:11:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-09 07:11:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2024-11-09 07:11:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2024-11-09 07:11:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_format [2024-11-09 07:11:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_format [2024-11-09 07:11:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 07:11:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 07:11:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure raid_io_hints [2024-11-09 07:11:37,090 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_io_hints [2024-11-09 07:11:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure raid_message [2024-11-09 07:11:37,092 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_message [2024-11-09 07:11:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-09 07:11:37,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-09 07:11:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2024-11-09 07:11:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2024-11-09 07:11:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure raid10_md_layout_to_copies [2024-11-09 07:11:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure raid10_md_layout_to_copies [2024-11-09 07:11:37,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 07:11:37,094 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 07:11:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 07:11:37,095 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 07:11:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure context_free [2024-11-09 07:11:37,095 INFO L138 BoogieDeclarations]: Found implementation of procedure context_free [2024-11-09 07:11:37,095 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-09 07:11:37,095 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-09 07:11:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2024-11-09 07:11:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2024-11-09 07:11:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure super_validate [2024-11-09 07:11:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure super_validate [2024-11-09 07:11:37,096 INFO L130 BoogieDeclarations]: Found specification of procedure do_table_event [2024-11-09 07:11:37,096 INFO L138 BoogieDeclarations]: Found implementation of procedure do_table_event [2024-11-09 07:11:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:11:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-11-09 07:11:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-11-09 07:11:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:11:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure sync_page_io [2024-11-09 07:11:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_page_io [2024-11-09 07:11:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-09 07:11:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-09 07:11:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure to_sector [2024-11-09 07:11:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure to_sector [2024-11-09 07:11:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:11:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 07:11:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 07:11:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure raid_iterate_devices [2024-11-09 07:11:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_iterate_devices [2024-11-09 07:11:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure dm_put_device [2024-11-09 07:11:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_put_device [2024-11-09 07:11:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 07:11:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2024-11-09 07:11:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_reconfig_mutex_of_mddev [2024-11-09 07:11:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:11:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure mddev_suspend [2024-11-09 07:11:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure mddev_suspend [2024-11-09 07:11:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2024-11-09 07:11:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2024-11-09 07:11:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure super_sync [2024-11-09 07:11:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure super_sync [2024-11-09 07:11:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:11:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2024-11-09 07:11:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2024-11-09 07:11:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure md_wakeup_thread [2024-11-09 07:11:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure md_wakeup_thread [2024-11-09 07:11:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-09 07:11:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-09 07:11:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:11:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure raid_merge [2024-11-09 07:11:37,109 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_merge [2024-11-09 07:11:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-09 07:11:37,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-09 07:11:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure raid_map [2024-11-09 07:11:37,111 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_map [2024-11-09 07:11:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:11:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:11:37,112 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2024-11-09 07:11:37,113 INFO L138 BoogieDeclarations]: Found implementation of procedure strcasecmp [2024-11-09 07:11:37,113 INFO L130 BoogieDeclarations]: Found specification of procedure scnprintf [2024-11-09 07:11:37,113 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprintf [2024-11-09 07:11:37,113 INFO L130 BoogieDeclarations]: Found specification of procedure md_stop [2024-11-09 07:11:37,114 INFO L138 BoogieDeclarations]: Found implementation of procedure md_stop [2024-11-09 07:11:37,114 INFO L130 BoogieDeclarations]: Found specification of procedure raid_status [2024-11-09 07:11:37,114 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_status [2024-11-09 07:11:37,114 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2024-11-09 07:11:37,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2024-11-09 07:11:37,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 07:11:37,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 07:11:37,115 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2024-11-09 07:11:37,115 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2024-11-09 07:11:37,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:11:37,115 INFO L130 BoogieDeclarations]: Found specification of procedure raid_dtr [2024-11-09 07:11:37,115 INFO L138 BoogieDeclarations]: Found implementation of procedure raid_dtr [2024-11-09 07:11:37,116 INFO L130 BoogieDeclarations]: Found specification of procedure dm_get_device [2024-11-09 07:11:37,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dm_get_device [2024-11-09 07:11:37,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:11:37,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:11:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-09 07:11:37,118 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-09 07:11:37,885 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:11:37,891 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:11:38,631 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-09 07:11:47,214 INFO L? ?]: Removed 1529 outVars from TransFormulas that were not future-live. [2024-11-09 07:11:47,214 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:11:48,850 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:11:48,851 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:11:48,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:11:48 BoogieIcfgContainer [2024-11-09 07:11:48,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:11:48,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:11:48,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:11:48,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:11:48,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:11:32" (1/3) ... [2024-11-09 07:11:48,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecc30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:11:48, skipping insertion in model container [2024-11-09 07:11:48,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:11:36" (2/3) ... [2024-11-09 07:11:48,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecc30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:11:48, skipping insertion in model container [2024-11-09 07:11:48,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:11:48" (3/3) ... [2024-11-09 07:11:48,867 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2024-11-09 07:11:48,893 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:11:48,894 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:11:49,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:11:49,037 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35f814ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:11:49,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:11:49,047 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) [2024-11-09 07:11:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-09 07:11:49,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:11:49,068 INFO L215 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] [2024-11-09 07:11:49,069 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:11:49,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:11:49,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1494282849, now seen corresponding path program 1 times [2024-11-09 07:11:49,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:11:49,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224902032] [2024-11-09 07:11:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:11:49,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:11:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:11:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-11-09 07:11:52,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:11:52,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224902032] [2024-11-09 07:11:52,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224902032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:11:52,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:11:52,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:11:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798964282] [2024-11-09 07:11:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:11:52,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:11:52,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:11:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:11:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:11:52,779 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) [2024-11-09 07:11:54,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:11:56,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:02,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:12:03,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:04,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:04,326 INFO L93 Difference]: Finished difference Result 3051 states and 4635 transitions. [2024-11-09 07:12:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:04,329 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 [2024-11-09 07:12:04,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:04,370 INFO L225 Difference]: With dead ends: 3051 [2024-11-09 07:12:04,370 INFO L226 Difference]: Without dead ends: 2023 [2024-11-09 07:12:04,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:04,402 INFO L432 NwaCegarLoop]: 1436 mSDtfsCounter, 1498 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:04,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2862 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2024-11-09 07:12:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2024-11-09 07:12:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2020. [2024-11-09 07:12:04,679 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) [2024-11-09 07:12:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3057 transitions. [2024-11-09 07:12:04,706 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3057 transitions. Word has length 170 [2024-11-09 07:12:04,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:04,708 INFO L471 AbstractCegarLoop]: Abstraction has 2020 states and 3057 transitions. [2024-11-09 07:12:04,708 INFO L472 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) [2024-11-09 07:12:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3057 transitions. [2024-11-09 07:12:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 07:12:04,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:04,715 INFO L215 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] [2024-11-09 07:12:04,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:12:04,716 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:04,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:04,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1178801994, now seen corresponding path program 1 times [2024-11-09 07:12:04,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:04,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127188367] [2024-11-09 07:12:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:04,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-11-09 07:12:06,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127188367] [2024-11-09 07:12:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127188367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:06,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:06,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:06,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301119199] [2024-11-09 07:12:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:06,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:06,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:06,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:06,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:06,952 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) [2024-11-09 07:12:09,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:11,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:14,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:12:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:14,783 INFO L93 Difference]: Finished difference Result 2022 states and 3058 transitions. [2024-11-09 07:12:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:14,784 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 [2024-11-09 07:12:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:14,803 INFO L225 Difference]: With dead ends: 2022 [2024-11-09 07:12:14,803 INFO L226 Difference]: Without dead ends: 2019 [2024-11-09 07:12:14,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:14,810 INFO L432 NwaCegarLoop]: 1421 mSDtfsCounter, 1525 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:14,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1421 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2024-11-09 07:12:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2024-11-09 07:12:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2024-11-09 07:12:14,951 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) [2024-11-09 07:12:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3055 transitions. [2024-11-09 07:12:14,975 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3055 transitions. Word has length 177 [2024-11-09 07:12:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:14,979 INFO L471 AbstractCegarLoop]: Abstraction has 2019 states and 3055 transitions. [2024-11-09 07:12:14,979 INFO L472 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) [2024-11-09 07:12:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3055 transitions. [2024-11-09 07:12:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-09 07:12:14,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:14,990 INFO L215 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] [2024-11-09 07:12:14,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:12:14,991 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:14,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2111462683, now seen corresponding path program 1 times [2024-11-09 07:12:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255805540] [2024-11-09 07:12:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:14,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-11-09 07:12:17,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:17,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255805540] [2024-11-09 07:12:17,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255805540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:17,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:17,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686231816] [2024-11-09 07:12:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:17,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:17,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:17,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:17,081 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) [2024-11-09 07:12:19,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:21,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:22,714 INFO L93 Difference]: Finished difference Result 2021 states and 3056 transitions. [2024-11-09 07:12:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:22,715 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 [2024-11-09 07:12:22,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:22,733 INFO L225 Difference]: With dead ends: 2021 [2024-11-09 07:12:22,733 INFO L226 Difference]: Without dead ends: 2018 [2024-11-09 07:12:22,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:22,737 INFO L432 NwaCegarLoop]: 1419 mSDtfsCounter, 1522 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:22,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1419 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2024-11-09 07:12:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2024-11-09 07:12:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2018. [2024-11-09 07:12:22,959 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) [2024-11-09 07:12:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3053 transitions. [2024-11-09 07:12:22,982 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3053 transitions. Word has length 178 [2024-11-09 07:12:22,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:22,984 INFO L471 AbstractCegarLoop]: Abstraction has 2018 states and 3053 transitions. [2024-11-09 07:12:22,985 INFO L472 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) [2024-11-09 07:12:22,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3053 transitions. [2024-11-09 07:12:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-09 07:12:22,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:22,994 INFO L215 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] [2024-11-09 07:12:22,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:12:22,997 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:22,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1030457433, now seen corresponding path program 1 times [2024-11-09 07:12:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:22,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372282510] [2024-11-09 07:12:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-11-09 07:12:25,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:25,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372282510] [2024-11-09 07:12:25,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372282510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:25,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:25,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:25,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443978931] [2024-11-09 07:12:25,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:25,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:25,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:25,134 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) [2024-11-09 07:12:27,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:28,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:30,181 INFO L93 Difference]: Finished difference Result 2020 states and 3054 transitions. [2024-11-09 07:12:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:30,182 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 [2024-11-09 07:12:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:30,199 INFO L225 Difference]: With dead ends: 2020 [2024-11-09 07:12:30,199 INFO L226 Difference]: Without dead ends: 2017 [2024-11-09 07:12:30,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:30,203 INFO L432 NwaCegarLoop]: 1417 mSDtfsCounter, 1519 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:30,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1417 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 07:12:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-09 07:12:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2024-11-09 07:12:30,401 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) [2024-11-09 07:12:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 3051 transitions. [2024-11-09 07:12:30,417 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 3051 transitions. Word has length 179 [2024-11-09 07:12:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:30,418 INFO L471 AbstractCegarLoop]: Abstraction has 2017 states and 3051 transitions. [2024-11-09 07:12:30,418 INFO L472 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) [2024-11-09 07:12:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 3051 transitions. [2024-11-09 07:12:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-09 07:12:30,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:30,425 INFO L215 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] [2024-11-09 07:12:30,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:12:30,426 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:30,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1879037918, now seen corresponding path program 1 times [2024-11-09 07:12:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:30,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496294707] [2024-11-09 07:12:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:30,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-11-09 07:12:32,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496294707] [2024-11-09 07:12:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496294707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:32,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:32,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910245556] [2024-11-09 07:12:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:32,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:32,085 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) [2024-11-09 07:12:34,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:38,345 INFO L93 Difference]: Finished difference Result 3977 states and 6024 transitions. [2024-11-09 07:12:38,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:38,346 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 [2024-11-09 07:12:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:38,377 INFO L225 Difference]: With dead ends: 3977 [2024-11-09 07:12:38,377 INFO L226 Difference]: Without dead ends: 3968 [2024-11-09 07:12:38,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:38,383 INFO L432 NwaCegarLoop]: 1419 mSDtfsCounter, 1498 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:38,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2788 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2024-11-09 07:12:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2024-11-09 07:12:38,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3968. [2024-11-09 07:12:38,746 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) [2024-11-09 07:12:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 6011 transitions. [2024-11-09 07:12:38,784 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 6011 transitions. Word has length 180 [2024-11-09 07:12:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:38,785 INFO L471 AbstractCegarLoop]: Abstraction has 3968 states and 6011 transitions. [2024-11-09 07:12:38,786 INFO L472 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) [2024-11-09 07:12:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 6011 transitions. [2024-11-09 07:12:38,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-09 07:12:38,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:38,803 INFO L215 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] [2024-11-09 07:12:38,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:12:38,804 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:38,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 480636112, now seen corresponding path program 1 times [2024-11-09 07:12:38,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:38,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406967180] [2024-11-09 07:12:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:38,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-11-09 07:12:40,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406967180] [2024-11-09 07:12:40,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406967180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:40,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:40,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:12:40,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717020888] [2024-11-09 07:12:40,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:40,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:12:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:12:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:40,545 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) [2024-11-09 07:12:42,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:45,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:50,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:12:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:50,650 INFO L93 Difference]: Finished difference Result 8078 states and 12227 transitions. [2024-11-09 07:12:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:12:50,652 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 [2024-11-09 07:12:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:50,683 INFO L225 Difference]: With dead ends: 8078 [2024-11-09 07:12:50,684 INFO L226 Difference]: Without dead ends: 4145 [2024-11-09 07:12:50,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:12:50,706 INFO L432 NwaCegarLoop]: 1427 mSDtfsCounter, 126 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:50,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2690 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 396 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2024-11-09 07:12:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2024-11-09 07:12:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4137. [2024-11-09 07:12:50,991 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) [2024-11-09 07:12:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6255 transitions. [2024-11-09 07:12:51,018 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6255 transitions. Word has length 258 [2024-11-09 07:12:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:51,019 INFO L471 AbstractCegarLoop]: Abstraction has 4137 states and 6255 transitions. [2024-11-09 07:12:51,019 INFO L472 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) [2024-11-09 07:12:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6255 transitions. [2024-11-09 07:12:51,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-09 07:12:51,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:51,036 INFO L215 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] [2024-11-09 07:12:51,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:12:51,037 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:12:51,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:51,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1976240684, now seen corresponding path program 1 times [2024-11-09 07:12:51,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:51,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64397236] [2024-11-09 07:12:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:51,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-09 07:12:52,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:52,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64397236] [2024-11-09 07:12:52,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64397236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:52,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:12:52,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:12:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002674208] [2024-11-09 07:12:52,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:52,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:12:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:12:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:12:52,966 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) [2024-11-09 07:12:55,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:57,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:12:59,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:02,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:06,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:13:08,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:13:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:09,573 INFO L93 Difference]: Finished difference Result 8242 states and 12472 transitions. [2024-11-09 07:13:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:13:09,574 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 [2024-11-09 07:13:09,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:09,606 INFO L225 Difference]: With dead ends: 8242 [2024-11-09 07:13:09,606 INFO L226 Difference]: Without dead ends: 4153 [2024-11-09 07:13:09,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:13:09,627 INFO L432 NwaCegarLoop]: 1417 mSDtfsCounter, 1 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 24 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4212 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:09,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4212 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 454 Invalid, 5 Unknown, 0 Unchecked, 16.3s Time] [2024-11-09 07:13:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4153 states. [2024-11-09 07:13:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4153 to 4145. [2024-11-09 07:13:09,924 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) [2024-11-09 07:13:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 6263 transitions. [2024-11-09 07:13:09,955 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 6263 transitions. Word has length 276 [2024-11-09 07:13:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:09,957 INFO L471 AbstractCegarLoop]: Abstraction has 4145 states and 6263 transitions. [2024-11-09 07:13:09,957 INFO L472 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) [2024-11-09 07:13:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 6263 transitions. [2024-11-09 07:13:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-09 07:13:09,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:09,977 INFO L215 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] [2024-11-09 07:13:09,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:13:09,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:13:09,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:09,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2100584234, now seen corresponding path program 1 times [2024-11-09 07:13:09,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:09,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968369216] [2024-11-09 07:13:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:09,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2024-11-09 07:13:11,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:11,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968369216] [2024-11-09 07:13:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968369216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:11,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:11,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:13:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059757180] [2024-11-09 07:13:11,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:11,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:13:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:13:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:13:11,984 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) [2024-11-09 07:13:14,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:16,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:18,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:21,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:24,514 INFO L93 Difference]: Finished difference Result 8250 states and 12476 transitions. [2024-11-09 07:13:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:13:24,515 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 291 [2024-11-09 07:13:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:24,544 INFO L225 Difference]: With dead ends: 8250 [2024-11-09 07:13:24,544 INFO L226 Difference]: Without dead ends: 4153 [2024-11-09 07:13:24,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:13:24,564 INFO L432 NwaCegarLoop]: 1416 mSDtfsCounter, 0 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:24,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4240 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 445 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-09 07:13:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4153 states. [2024-11-09 07:13:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4153 to 4153. [2024-11-09 07:13:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 2985 states have (on average 1.4368509212730318) internal successors, (4289), 3028 states have internal predecessors, (4289), 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) [2024-11-09 07:13:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 6271 transitions. [2024-11-09 07:13:24,862 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 6271 transitions. Word has length 291 [2024-11-09 07:13:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:24,863 INFO L471 AbstractCegarLoop]: Abstraction has 4153 states and 6271 transitions. [2024-11-09 07:13:24,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-09 07:13:24,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 6271 transitions. [2024-11-09 07:13:24,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-09 07:13:24,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:24,882 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:24,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:13:24,883 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:13:24,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1461815936, now seen corresponding path program 1 times [2024-11-09 07:13:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:24,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828017790] [2024-11-09 07:13:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:24,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-09 07:13:26,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828017790] [2024-11-09 07:13:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828017790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:26,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:13:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:13:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802604996] [2024-11-09 07:13:26,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:26,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:13:26,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:26,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:13:26,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:13:26,873 INFO L87 Difference]: Start difference. First operand 4153 states and 6271 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-09 07:13:28,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:30,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:36,637 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 [] [2024-11-09 07:13:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:37,121 INFO L93 Difference]: Finished difference Result 8358 states and 12640 transitions. [2024-11-09 07:13:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:13:37,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 296 [2024-11-09 07:13:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:37,161 INFO L225 Difference]: With dead ends: 8358 [2024-11-09 07:13:37,161 INFO L226 Difference]: Without dead ends: 4253 [2024-11-09 07:13:37,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:13:37,183 INFO L432 NwaCegarLoop]: 1419 mSDtfsCounter, 22 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:37,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2834 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 292 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2024-11-09 07:13:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2024-11-09 07:13:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4229. [2024-11-09 07:13:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4229 states, 3045 states have (on average 1.4374384236453202) internal successors, (4377), 3088 states have internal predecessors, (4377), 1008 states have call successors, (1008), 178 states have call predecessors, (1008), 175 states have return successors, (1006), 988 states have call predecessors, (1006), 1006 states have call successors, (1006) [2024-11-09 07:13:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4229 states to 4229 states and 6391 transitions. [2024-11-09 07:13:37,576 INFO L78 Accepts]: Start accepts. Automaton has 4229 states and 6391 transitions. Word has length 296 [2024-11-09 07:13:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:37,577 INFO L471 AbstractCegarLoop]: Abstraction has 4229 states and 6391 transitions. [2024-11-09 07:13:37,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-09 07:13:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4229 states and 6391 transitions. [2024-11-09 07:13:37,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-09 07:13:37,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:37,596 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:13:37,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 07:13:37,596 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:13:37,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:37,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1651849469, now seen corresponding path program 1 times [2024-11-09 07:13:37,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:37,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398701879] [2024-11-09 07:13:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:37,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-09 07:13:40,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398701879] [2024-11-09 07:13:40,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398701879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460081290] [2024-11-09 07:13:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:40,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:40,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:40,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:13:40,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:13:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:44,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 4130 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:13:44,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-09 07:13:45,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:13:45,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460081290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:45,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:13:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 07:13:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642557422] [2024-11-09 07:13:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:45,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:13:45,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:45,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:13:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:13:45,681 INFO L87 Difference]: Start difference. First operand 4229 states and 6391 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-09 07:13:47,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:49,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:13:51,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:10,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:14:12,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:14:17,877 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 [] [2024-11-09 07:14:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:20,265 INFO L93 Difference]: Finished difference Result 10528 states and 15917 transitions. [2024-11-09 07:14:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:14:20,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 297 [2024-11-09 07:14:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:20,337 INFO L225 Difference]: With dead ends: 10528 [2024-11-09 07:14:20,338 INFO L226 Difference]: Without dead ends: 10520 [2024-11-09 07:14:20,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:14:20,348 INFO L432 NwaCegarLoop]: 2781 mSDtfsCounter, 2942 mSDsluCounter, 4020 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 6801 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:20,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2942 Valid, 6801 Invalid, 2445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2431 Invalid, 6 Unknown, 0 Unchecked, 33.9s Time] [2024-11-09 07:14:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2024-11-09 07:14:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 10480. [2024-11-09 07:14:21,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 7554 states have (on average 1.4410908128144029) internal successors, (10886), 7679 states have internal predecessors, (10886), 2493 states have call successors, (2493), 437 states have call predecessors, (2493), 432 states have return successors, (2491), 2429 states have call predecessors, (2491), 2491 states have call successors, (2491) [2024-11-09 07:14:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 15870 transitions. [2024-11-09 07:14:21,285 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 15870 transitions. Word has length 297 [2024-11-09 07:14:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:21,287 INFO L471 AbstractCegarLoop]: Abstraction has 10480 states and 15870 transitions. [2024-11-09 07:14:21,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-09 07:14:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 15870 transitions. [2024-11-09 07:14:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-09 07:14:21,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:21,322 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:21,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:14:21,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 07:14:21,523 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:14:21,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1933795668, now seen corresponding path program 1 times [2024-11-09 07:14:21,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:21,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480344481] [2024-11-09 07:14:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:21,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-09 07:14:23,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480344481] [2024-11-09 07:14:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480344481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:23,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:23,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:14:23,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40483037] [2024-11-09 07:14:23,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:23,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:14:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:23,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:14:23,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:14:23,664 INFO L87 Difference]: Start difference. First operand 10480 states and 15870 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-09 07:14:25,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:27,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:33,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:14:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:34,501 INFO L93 Difference]: Finished difference Result 20932 states and 31718 transitions. [2024-11-09 07:14:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:14:34,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 298 [2024-11-09 07:14:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:34,562 INFO L225 Difference]: With dead ends: 20932 [2024-11-09 07:14:34,562 INFO L226 Difference]: Without dead ends: 10500 [2024-11-09 07:14:34,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:14:34,606 INFO L432 NwaCegarLoop]: 1416 mSDtfsCounter, 1 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:34,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2829 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 295 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2024-11-09 07:14:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10500 states. [2024-11-09 07:14:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10500 to 10490. [2024-11-09 07:14:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10490 states, 7564 states have (on average 1.4405076679005817) internal successors, (10896), 7689 states have internal predecessors, (10896), 2493 states have call successors, (2493), 437 states have call predecessors, (2493), 432 states have return successors, (2491), 2429 states have call predecessors, (2491), 2491 states have call successors, (2491) [2024-11-09 07:14:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10490 states to 10490 states and 15880 transitions. [2024-11-09 07:14:35,321 INFO L78 Accepts]: Start accepts. Automaton has 10490 states and 15880 transitions. Word has length 298 [2024-11-09 07:14:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:35,321 INFO L471 AbstractCegarLoop]: Abstraction has 10490 states and 15880 transitions. [2024-11-09 07:14:35,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-09 07:14:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10490 states and 15880 transitions. [2024-11-09 07:14:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-09 07:14:35,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:35,351 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:35,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 07:14:35,354 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:14:35,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1192927353, now seen corresponding path program 1 times [2024-11-09 07:14:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410271234] [2024-11-09 07:14:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-09 07:14:44,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410271234] [2024-11-09 07:14:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410271234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:14:44,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:14:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 07:14:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096032381] [2024-11-09 07:14:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:14:44,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:14:44,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:14:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:14:44,508 INFO L87 Difference]: Start difference. First operand 10490 states and 15880 transitions. Second operand has 12 states, 7 states have (on average 17.571428571428573) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-09 07:14:46,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:48,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:50,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:52,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:54,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:56,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:14:58,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:00,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:02,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:05,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:07,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:11,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:23,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:15:24,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:15:26,849 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 [] [2024-11-09 07:15:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:28,742 INFO L93 Difference]: Finished difference Result 20972 states and 31758 transitions. [2024-11-09 07:15:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:15:28,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 17.571428571428573) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) Word has length 299 [2024-11-09 07:15:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:28,793 INFO L225 Difference]: With dead ends: 20972 [2024-11-09 07:15:28,793 INFO L226 Difference]: Without dead ends: 10530 [2024-11-09 07:15:28,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:15:28,826 INFO L432 NwaCegarLoop]: 1410 mSDtfsCounter, 2 mSDsluCounter, 14077 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 15487 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:28,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 15487 Invalid, 1708 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1696 Invalid, 12 Unknown, 0 Unchecked, 43.3s Time] [2024-11-09 07:15:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10530 states. [2024-11-09 07:15:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10530 to 10530. [2024-11-09 07:15:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10530 states, 7594 states have (on average 1.4387674479852515) internal successors, (10926), 7719 states have internal predecessors, (10926), 2503 states have call successors, (2503), 437 states have call predecessors, (2503), 432 states have return successors, (2501), 2439 states have call predecessors, (2501), 2501 states have call successors, (2501) [2024-11-09 07:15:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10530 states to 10530 states and 15930 transitions. [2024-11-09 07:15:29,510 INFO L78 Accepts]: Start accepts. Automaton has 10530 states and 15930 transitions. Word has length 299 [2024-11-09 07:15:29,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:29,511 INFO L471 AbstractCegarLoop]: Abstraction has 10530 states and 15930 transitions. [2024-11-09 07:15:29,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 17.571428571428573) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-09 07:15:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 10530 states and 15930 transitions. [2024-11-09 07:15:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-09 07:15:29,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:29,537 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:29,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 07:15:29,538 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:15:29,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1741899994, now seen corresponding path program 1 times [2024-11-09 07:15:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989085768] [2024-11-09 07:15:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-09 07:15:32,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989085768] [2024-11-09 07:15:32,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989085768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:32,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:15:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319451060] [2024-11-09 07:15:32,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:32,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:15:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:15:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:15:32,444 INFO L87 Difference]: Start difference. First operand 10530 states and 15930 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-09 07:15:34,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:36,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:38,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:40,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:43,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:47,845 INFO L93 Difference]: Finished difference Result 21052 states and 31868 transitions. [2024-11-09 07:15:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:15:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 303 [2024-11-09 07:15:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:47,905 INFO L225 Difference]: With dead ends: 21052 [2024-11-09 07:15:47,905 INFO L226 Difference]: Without dead ends: 10570 [2024-11-09 07:15:47,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:15:47,942 INFO L432 NwaCegarLoop]: 1417 mSDtfsCounter, 0 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:47,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5663 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 588 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2024-11-09 07:15:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2024-11-09 07:15:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 10570. [2024-11-09 07:15:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10570 states, 7624 states have (on average 1.43704092339979) internal successors, (10956), 7749 states have internal predecessors, (10956), 2503 states have call successors, (2503), 437 states have call predecessors, (2503), 442 states have return successors, (2531), 2449 states have call predecessors, (2531), 2501 states have call successors, (2531) [2024-11-09 07:15:48,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10570 states to 10570 states and 15990 transitions. [2024-11-09 07:15:48,725 INFO L78 Accepts]: Start accepts. Automaton has 10570 states and 15990 transitions. Word has length 303 [2024-11-09 07:15:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:48,726 INFO L471 AbstractCegarLoop]: Abstraction has 10570 states and 15990 transitions. [2024-11-09 07:15:48,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-09 07:15:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10570 states and 15990 transitions. [2024-11-09 07:15:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-09 07:15:48,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:48,753 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:15:48,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 07:15:48,754 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:15:48,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash -533816707, now seen corresponding path program 1 times [2024-11-09 07:15:48,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:48,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349588102] [2024-11-09 07:15:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-09 07:15:55,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349588102] [2024-11-09 07:15:55,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349588102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:15:55,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:15:55,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 07:15:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414388747] [2024-11-09 07:15:55,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:15:55,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:15:55,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:15:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:15:55,737 INFO L87 Difference]: Start difference. First operand 10570 states and 15990 transitions. Second operand has 12 states, 7 states have (on average 18.285714285714285) internal successors, (128), 9 states have internal predecessors, (128), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-09 07:15:57,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:15:59,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:01,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:03,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:05,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:07,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:09,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:12,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:14,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:16,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:18,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:23,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:26,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:28,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:16:39,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-09 07:16:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:40,753 INFO L93 Difference]: Finished difference Result 21132 states and 31978 transitions. [2024-11-09 07:16:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:16:40,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 18.285714285714285) internal successors, (128), 9 states have internal predecessors, (128), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) Word has length 306 [2024-11-09 07:16:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:40,805 INFO L225 Difference]: With dead ends: 21132 [2024-11-09 07:16:40,805 INFO L226 Difference]: Without dead ends: 10610 [2024-11-09 07:16:40,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:16:40,838 INFO L432 NwaCegarLoop]: 1413 mSDtfsCounter, 2 mSDsluCounter, 14098 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 15511 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:40,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 15511 Invalid, 1734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1722 Invalid, 12 Unknown, 0 Unchecked, 44.2s Time] [2024-11-09 07:16:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10610 states. [2024-11-09 07:16:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10610 to 10570. [2024-11-09 07:16:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10570 states, 7624 states have (on average 1.43704092339979) internal successors, (10956), 7749 states have internal predecessors, (10956), 2503 states have call successors, (2503), 437 states have call predecessors, (2503), 442 states have return successors, (2531), 2449 states have call predecessors, (2531), 2501 states have call successors, (2531) [2024-11-09 07:16:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10570 states to 10570 states and 15990 transitions. [2024-11-09 07:16:41,570 INFO L78 Accepts]: Start accepts. Automaton has 10570 states and 15990 transitions. Word has length 306 [2024-11-09 07:16:41,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:41,571 INFO L471 AbstractCegarLoop]: Abstraction has 10570 states and 15990 transitions. [2024-11-09 07:16:41,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 18.285714285714285) internal successors, (128), 9 states have internal predecessors, (128), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-09 07:16:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 10570 states and 15990 transitions. [2024-11-09 07:16:41,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-09 07:16:41,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:41,593 INFO L215 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:16:41,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 07:16:41,594 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:16:41,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:41,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1796900016, now seen corresponding path program 1 times [2024-11-09 07:16:41,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:41,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275189164] [2024-11-09 07:16:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:41,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 07:17:35,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:17:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275189164] [2024-11-09 07:17:35,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275189164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:17:35,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49514617] [2024-11-09 07:17:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:17:35,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:17:35,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:17:35,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:17:35,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:17:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:17:38,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 4286 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 07:17:38,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:17:40,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 99 [2024-11-09 07:17:40,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 11 [2024-11-09 07:17:41,167 INFO L224 Elim1Store]: Index analysis took 223 ms [2024-11-09 07:17:41,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 13 [2024-11-09 07:17:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-11-09 07:17:41,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:17:41,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49514617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:17:41,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:17:41,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [40] total 47 [2024-11-09 07:17:41,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866759445] [2024-11-09 07:17:41,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:17:41,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 07:17:41,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 07:17:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1989, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 07:17:41,706 INFO L87 Difference]: Start difference. First operand 10570 states and 15990 transitions. Second operand has 9 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2024-11-09 07:17:43,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:45,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:47,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:49,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:51,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:53,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:55,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:17:58,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:01,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:03,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:18:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:18:08,782 INFO L93 Difference]: Finished difference Result 21122 states and 31968 transitions. [2024-11-09 07:18:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:18:08,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 317 [2024-11-09 07:18:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:18:08,839 INFO L225 Difference]: With dead ends: 21122 [2024-11-09 07:18:08,839 INFO L226 Difference]: Without dead ends: 10600 [2024-11-09 07:18:08,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 383 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=173, Invalid=1989, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 07:18:08,870 INFO L432 NwaCegarLoop]: 1418 mSDtfsCounter, 6 mSDsluCounter, 7034 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8452 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:18:08,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8452 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 9 Unknown, 0 Unchecked, 26.7s Time] [2024-11-09 07:18:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2024-11-09 07:18:09,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 10580. [2024-11-09 07:18:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10580 states, 7634 states have (on average 1.436468430704742) internal successors, (10966), 7759 states have internal predecessors, (10966), 2503 states have call successors, (2503), 437 states have call predecessors, (2503), 442 states have return successors, (2531), 2449 states have call predecessors, (2531), 2501 states have call successors, (2531) [2024-11-09 07:18:09,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10580 states to 10580 states and 16000 transitions. [2024-11-09 07:18:09,519 INFO L78 Accepts]: Start accepts. Automaton has 10580 states and 16000 transitions. Word has length 317 [2024-11-09 07:18:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:18:09,520 INFO L471 AbstractCegarLoop]: Abstraction has 10580 states and 16000 transitions. [2024-11-09 07:18:09,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 4 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2024-11-09 07:18:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 10580 states and 16000 transitions. [2024-11-09 07:18:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-09 07:18:09,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:18:09,541 INFO L215 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:18:09,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:18:09,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3652c9e-5bf6-4fac-b7fe-0d8cb8a230c6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 07:18:09,743 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:18:09,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:18:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2138442569, now seen corresponding path program 1 times [2024-11-09 07:18:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:18:09,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254653868] [2024-11-09 07:18:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:18:09,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:18:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat