./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:50:07,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:50:07,913 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:50:07,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:50:07,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:50:07,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:50:07,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:50:07,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:50:07,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:50:07,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:50:07,952 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:50:07,953 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:50:07,953 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:50:07,954 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:50:07,954 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:50:07,955 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:50:07,955 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:50:07,956 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:50:07,956 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:50:07,957 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:50:07,958 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:50:07,960 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:50:07,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:50:07,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:50:07,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:50:07,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:50:07,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:50:07,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:50:07,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:50:07,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:50:07,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:50:07,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:50:07,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:50:07,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:07,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:50:07,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:50:07,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:50:07,968 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:50:07,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:50:07,968 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:50:07,969 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:50:07,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:50:07,969 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_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 [2023-11-19 04:50:08,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:50:08,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:50:08,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:50:08,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:50:08,332 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:50:08,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2023-11-19 04:50:11,464 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:50:12,128 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:50:12,128 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2023-11-19 04:50:12,181 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/data/b5d94ca6a/f4696136eda046858051db2358951eea/FLAG43023c288 [2023-11-19 04:50:12,198 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/data/b5d94ca6a/f4696136eda046858051db2358951eea [2023-11-19 04:50:12,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:50:12,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:50:12,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:12,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:50:12,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:50:12,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a81ea81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12, skipping insertion in model container [2023-11-19 04:50:12,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:14,263 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2023-11-19 04:50:14,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:14,446 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:50:14,605 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/zakharov_benchmarks/bench/cpa/inst/current/envs/linux-3.8-rc1/linux-3.8-rc1/arch/x86/include/asm/paravirt.h"), "i" (179), "i" (12UL)); [3950-3951] [2023-11-19 04:50:14,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c6;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c5\n .byte 772b-771b\n .short %c7\n.popsection\n": "=D" (__edi), "=S" (__esi), "=d" (__edx), "=c" (__ecx), "=a" (__eax): [paravirt_typenum] "i" (35UL), [paravirt_opptr] "i" (& pv_cpu_ops.read_tsc), [paravirt_clobber] "i" (511): "memory", "cc", "r8", "r9", "r10", "r11"); [3956-3959] [2023-11-19 04:50:14,608 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("661:\n\tprefetcht0 (%1)\n662:\n.pushsection .altinstructions,\"a\"\n .long 661b - .\n .long 6631f - .\n .word (1*32+31)\n .byte 662b-661b\n .byte 6641f-6631f\n.popsection\n.pushsection .discard,\"aw\",@progbits\n .byte 0xff + (6641f-6631f) - (662b-661b)\n.popsection\n.pushsection .altinstr_replacement, \"ax\"\n6631:\n\tprefetchw (%1)\n6641:\n\t.popsection": : "i" (0), "r" (x)); [3967-3968] [2023-11-19 04:50:14,609 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; addl %1,%0": "+m" (v->counter): "ir" (i)); [3988] [2023-11-19 04:50:14,609 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; subl %2,%0; sete %1": "+m" (v->counter), "=qm" (c): "ir" (i): "memory"); [3995-3996] [2023-11-19 04:50:14,610 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [4003] [2023-11-19 04:50:14,693 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)front) [4600] [2023-11-19 04:50:14,693 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)back) [4601] [2023-11-19 04:50:14,911 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/zakharov_benchmarks/bench/cpa/work/current--X--drivers/video/udlfb.ko--X--x1linux-3.8-rc1--X--32_7a--X--cpachecker/linux-3.8-rc1/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/video/udlfb.c.prepared"), "i" (1990), "i" (12UL)); [6381-6382] [2023-11-19 04:50:14,913 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/zakharov_benchmarks/bench/cpa/work/current--X--drivers/video/udlfb.ko--X--x1linux-3.8-rc1--X--32_7a--X--cpachecker/linux-3.8-rc1/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/video/udlfb.c.prepared"), "i" (2008), "i" (12UL)); [6404-6405] [2023-11-19 04:50:14,928 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2023-11-19 04:50:14,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:15,141 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:15,150 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:50:15,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15 WrapperNode [2023-11-19 04:50:15,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:15,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:15,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:50:15,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:50:15,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,517 INFO L138 Inliner]: procedures = 257, calls = 1528, calls flagged for inlining = 110, calls inlined = 100, statements flattened = 3886 [2023-11-19 04:50:15,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:15,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:50:15,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:50:15,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:50:15,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:50:15,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:50:15,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:50:15,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:50:15,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:15,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:50:15,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e190f6fe-1e68-4d7d-adac-9260ae0f9e98/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:50:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-19 04:50:15,947 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-19 04:50:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2023-11-19 04:50:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2023-11-19 04:50:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-19 04:50:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-19 04:50:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2023-11-19 04:50:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2023-11-19 04:50:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2023-11-19 04:50:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2023-11-19 04:50:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:50:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:50:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2023-11-19 04:50:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2023-11-19 04:50:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2023-11-19 04:50:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2023-11-19 04:50:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2023-11-19 04:50:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2023-11-19 04:50:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:50:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:50:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2023-11-19 04:50:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2023-11-19 04:50:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2023-11-19 04:50:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2023-11-19 04:50:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2023-11-19 04:50:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2023-11-19 04:50:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2023-11-19 04:50:15,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2023-11-19 04:50:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-19 04:50:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-19 04:50:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 04:50:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 04:50:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2023-11-19 04:50:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2023-11-19 04:50:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:50:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:50:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-19 04:50:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-19 04:50:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:50:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:50:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2023-11-19 04:50:15,958 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2023-11-19 04:50:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2023-11-19 04:50:15,958 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2023-11-19 04:50:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2023-11-19 04:50:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2023-11-19 04:50:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 04:50:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 04:50:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 04:50:15,959 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 04:50:15,959 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2023-11-19 04:50:15,960 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2023-11-19 04:50:15,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:50:15,961 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 04:50:15,962 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 04:50:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 04:50:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2023-11-19 04:50:15,962 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2023-11-19 04:50:15,962 INFO L130 BoogieDeclarations]: Found specification of procedure up [2023-11-19 04:50:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2023-11-19 04:50:15,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:50:15,963 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2023-11-19 04:50:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2023-11-19 04:50:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 04:50:15,964 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 04:50:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2023-11-19 04:50:15,964 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2023-11-19 04:50:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:50:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2023-11-19 04:50:15,965 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2023-11-19 04:50:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:50:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 04:50:15,965 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 04:50:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2023-11-19 04:50:15,966 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2023-11-19 04:50:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:50:15,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:50:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 04:50:15,967 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 04:50:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 04:50:15,967 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 04:50:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 04:50:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 04:50:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2023-11-19 04:50:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2023-11-19 04:50:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 04:50:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 04:50:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-19 04:50:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-19 04:50:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:50:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 04:50:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 04:50:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2023-11-19 04:50:15,970 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2023-11-19 04:50:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 04:50:15,970 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 04:50:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:50:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2023-11-19 04:50:15,971 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2023-11-19 04:50:15,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:50:15,971 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2023-11-19 04:50:15,972 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2023-11-19 04:50:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2023-11-19 04:50:15,972 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2023-11-19 04:50:15,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 04:50:15,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 04:50:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2023-11-19 04:50:15,973 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2023-11-19 04:50:15,973 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 04:50:15,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 04:50:15,974 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:50:15,975 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:50:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2023-11-19 04:50:15,975 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2023-11-19 04:50:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-19 04:50:15,975 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-19 04:50:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2023-11-19 04:50:15,976 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2023-11-19 04:50:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:50:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2023-11-19 04:50:15,977 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2023-11-19 04:50:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2023-11-19 04:50:15,977 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2023-11-19 04:50:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-19 04:50:15,978 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-19 04:50:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:50:15,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:50:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:50:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2023-11-19 04:50:15,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2023-11-19 04:50:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2023-11-19 04:50:15,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2023-11-19 04:50:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:50:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2023-11-19 04:50:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2023-11-19 04:50:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:50:15,980 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:50:15,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:50:15,982 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2023-11-19 04:50:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2023-11-19 04:50:15,987 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2023-11-19 04:50:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2023-11-19 04:50:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-19 04:50:15,989 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-19 04:50:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 04:50:15,990 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 04:50:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2023-11-19 04:50:15,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2023-11-19 04:50:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-11-19 04:50:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-11-19 04:50:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2023-11-19 04:50:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2023-11-19 04:50:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-19 04:50:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-19 04:50:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 04:50:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 04:50:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2023-11-19 04:50:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2023-11-19 04:50:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-11-19 04:50:15,998 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-11-19 04:50:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:50:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 04:50:15,999 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 04:50:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:50:15,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:50:16,932 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:50:16,936 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:50:28,011 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:50:29,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:50:29,696 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:50:29,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:29 BoogieIcfgContainer [2023-11-19 04:50:29,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:50:29,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:50:29,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:50:29,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:50:29,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:50:12" (1/3) ... [2023-11-19 04:50:29,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58246e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:29, skipping insertion in model container [2023-11-19 04:50:29,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (2/3) ... [2023-11-19 04:50:29,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58246e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:29, skipping insertion in model container [2023-11-19 04:50:29,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:29" (3/3) ... [2023-11-19 04:50:29,731 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2023-11-19 04:50:29,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:50:29,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:50:29,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:50:29,884 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@57477650, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:50:29,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:50:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 945 states, 587 states have (on average 1.332197614991482) internal successors, (782), 609 states have internal predecessors, (782), 282 states have call successors, (282), 74 states have call predecessors, (282), 74 states have return successors, (282), 278 states have call predecessors, (282), 282 states have call successors, (282) [2023-11-19 04:50:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:50:29,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:29,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:29,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:29,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash -962537171, now seen corresponding path program 1 times [2023-11-19 04:50:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:29,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098695305] [2023-11-19 04:50:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:30,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:30,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098695305] [2023-11-19 04:50:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098695305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:30,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:30,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:30,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113990511] [2023-11-19 04:50:30,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:30,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:30,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:30,846 INFO L87 Difference]: Start difference. First operand has 945 states, 587 states have (on average 1.332197614991482) internal successors, (782), 609 states have internal predecessors, (782), 282 states have call successors, (282), 74 states have call predecessors, (282), 74 states have return successors, (282), 278 states have call predecessors, (282), 282 states have call successors, (282) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:33,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:35,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:37,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:37,642 INFO L93 Difference]: Finished difference Result 2817 states and 4048 transitions. [2023-11-19 04:50:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:37,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:50:37,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:37,711 INFO L225 Difference]: With dead ends: 2817 [2023-11-19 04:50:37,712 INFO L226 Difference]: Without dead ends: 1865 [2023-11-19 04:50:37,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:37,741 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 1309 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:37,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 2338 Invalid, 341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 338 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2023-11-19 04:50:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2023-11-19 04:50:37,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1861. [2023-11-19 04:50:37,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1157 states have (on average 1.3215211754537597) internal successors, (1529), 1191 states have internal predecessors, (1529), 557 states have call successors, (557), 147 states have call predecessors, (557), 146 states have return successors, (550), 542 states have call predecessors, (550), 550 states have call successors, (550) [2023-11-19 04:50:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2636 transitions. [2023-11-19 04:50:38,010 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2636 transitions. Word has length 11 [2023-11-19 04:50:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:38,010 INFO L495 AbstractCegarLoop]: Abstraction has 1861 states and 2636 transitions. [2023-11-19 04:50:38,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2636 transitions. [2023-11-19 04:50:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:50:38,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:38,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:50:38,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:38,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1381699799, now seen corresponding path program 1 times [2023-11-19 04:50:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:38,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198218413] [2023-11-19 04:50:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:38,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198218413] [2023-11-19 04:50:38,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198218413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:38,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:38,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:38,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191651205] [2023-11-19 04:50:38,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:38,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:38,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:38,214 INFO L87 Difference]: Start difference. First operand 1861 states and 2636 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:39,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:50:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:40,997 INFO L93 Difference]: Finished difference Result 1863 states and 2637 transitions. [2023-11-19 04:50:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:40,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 04:50:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:41,017 INFO L225 Difference]: With dead ends: 1863 [2023-11-19 04:50:41,018 INFO L226 Difference]: Without dead ends: 1860 [2023-11-19 04:50:41,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:41,022 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 1318 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:41,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1162 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 04:50:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-11-19 04:50:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1860. [2023-11-19 04:50:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1157 states have (on average 1.320656871218669) internal successors, (1528), 1190 states have internal predecessors, (1528), 556 states have call successors, (556), 147 states have call predecessors, (556), 146 states have return successors, (550), 542 states have call predecessors, (550), 550 states have call successors, (550) [2023-11-19 04:50:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 2634 transitions. [2023-11-19 04:50:41,293 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 2634 transitions. Word has length 13 [2023-11-19 04:50:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:41,293 INFO L495 AbstractCegarLoop]: Abstraction has 1860 states and 2634 transitions. [2023-11-19 04:50:41,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 2634 transitions. [2023-11-19 04:50:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:50:41,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:41,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:41,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:50:41,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:41,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash 116426990, now seen corresponding path program 1 times [2023-11-19 04:50:41,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:41,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752866370] [2023-11-19 04:50:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:41,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:41,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752866370] [2023-11-19 04:50:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752866370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064355787] [2023-11-19 04:50:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:41,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:41,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:41,471 INFO L87 Difference]: Start difference. First operand 1860 states and 2634 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:43,701 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 [] [2023-11-19 04:50:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:44,743 INFO L93 Difference]: Finished difference Result 1862 states and 2635 transitions. [2023-11-19 04:50:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:44,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 04:50:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:44,762 INFO L225 Difference]: With dead ends: 1862 [2023-11-19 04:50:44,763 INFO L226 Difference]: Without dead ends: 1859 [2023-11-19 04:50:44,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:44,766 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 1315 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:44,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1160 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-11-19 04:50:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2023-11-19 04:50:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1859. [2023-11-19 04:50:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1157 states have (on average 1.3197925669835782) internal successors, (1527), 1189 states have internal predecessors, (1527), 555 states have call successors, (555), 147 states have call predecessors, (555), 146 states have return successors, (550), 542 states have call predecessors, (550), 550 states have call successors, (550) [2023-11-19 04:50:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2632 transitions. [2023-11-19 04:50:44,919 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2632 transitions. Word has length 14 [2023-11-19 04:50:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:44,920 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2632 transitions. [2023-11-19 04:50:44,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2632 transitions. [2023-11-19 04:50:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:50:44,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:44,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:44,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:50:44,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:44,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash -686277940, now seen corresponding path program 1 times [2023-11-19 04:50:44,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:44,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29139393] [2023-11-19 04:50:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:45,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:45,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29139393] [2023-11-19 04:50:45,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29139393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:45,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:45,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:45,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522868867] [2023-11-19 04:50:45,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:45,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:45,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:45,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:45,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:45,148 INFO L87 Difference]: Start difference. First operand 1859 states and 2632 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:48,577 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 [] [2023-11-19 04:50:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:50,583 INFO L93 Difference]: Finished difference Result 5547 states and 7999 transitions. [2023-11-19 04:50:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:50,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 04:50:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:50,618 INFO L225 Difference]: With dead ends: 5547 [2023-11-19 04:50:50,619 INFO L226 Difference]: Without dead ends: 3689 [2023-11-19 04:50:50,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:50,632 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1320 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:50,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 2505 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 357 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-11-19 04:50:50,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2023-11-19 04:50:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3683. [2023-11-19 04:50:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3683 states, 2296 states have (on average 1.3196864111498259) internal successors, (3030), 2356 states have internal predecessors, (3030), 1100 states have call successors, (1100), 288 states have call predecessors, (1100), 286 states have return successors, (1162), 1078 states have call predecessors, (1162), 1094 states have call successors, (1162) [2023-11-19 04:50:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3683 states to 3683 states and 5292 transitions. [2023-11-19 04:50:51,020 INFO L78 Accepts]: Start accepts. Automaton has 3683 states and 5292 transitions. Word has length 15 [2023-11-19 04:50:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:51,021 INFO L495 AbstractCegarLoop]: Abstraction has 3683 states and 5292 transitions. [2023-11-19 04:50:51,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3683 states and 5292 transitions. [2023-11-19 04:50:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:50:51,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:51,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:51,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:50:51,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:51,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 199677873, now seen corresponding path program 1 times [2023-11-19 04:50:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:51,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277964042] [2023-11-19 04:50:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:51,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277964042] [2023-11-19 04:50:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277964042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:51,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467544843] [2023-11-19 04:50:51,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:51,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:51,233 INFO L87 Difference]: Start difference. First operand 3683 states and 5292 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:53,437 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 [] [2023-11-19 04:50:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:54,712 INFO L93 Difference]: Finished difference Result 3685 states and 5293 transitions. [2023-11-19 04:50:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:54,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 04:50:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:54,747 INFO L225 Difference]: With dead ends: 3685 [2023-11-19 04:50:54,747 INFO L226 Difference]: Without dead ends: 3682 [2023-11-19 04:50:54,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:54,755 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 1311 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:54,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1158 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-11-19 04:50:54,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2023-11-19 04:50:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 3682. [2023-11-19 04:50:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 2296 states have (on average 1.3192508710801394) internal successors, (3029), 2355 states have internal predecessors, (3029), 1099 states have call successors, (1099), 288 states have call predecessors, (1099), 286 states have return successors, (1162), 1078 states have call predecessors, (1162), 1094 states have call successors, (1162) [2023-11-19 04:50:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5290 transitions. [2023-11-19 04:50:55,156 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5290 transitions. Word has length 16 [2023-11-19 04:50:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:55,156 INFO L495 AbstractCegarLoop]: Abstraction has 3682 states and 5290 transitions. [2023-11-19 04:50:55,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5290 transitions. [2023-11-19 04:50:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:50:55,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:55,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:55,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:50:55,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:55,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1894509167, now seen corresponding path program 1 times [2023-11-19 04:50:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:55,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879140393] [2023-11-19 04:50:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:55,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:55,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:55,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879140393] [2023-11-19 04:50:55,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879140393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:55,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:55,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528176059] [2023-11-19 04:50:55,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:55,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:55,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:55,360 INFO L87 Difference]: Start difference. First operand 3682 states and 5290 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:56,753 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 [] [2023-11-19 04:50:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:57,821 INFO L93 Difference]: Finished difference Result 3684 states and 5291 transitions. [2023-11-19 04:50:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:57,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 04:50:57,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:57,852 INFO L225 Difference]: With dead ends: 3684 [2023-11-19 04:50:57,852 INFO L226 Difference]: Without dead ends: 3675 [2023-11-19 04:50:57,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:57,857 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 1308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:57,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1157 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 04:50:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2023-11-19 04:50:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3675. [2023-11-19 04:50:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2290 states have (on average 1.3187772925764192) internal successors, (3020), 2348 states have internal predecessors, (3020), 1098 states have call successors, (1098), 288 states have call predecessors, (1098), 286 states have return successors, (1162), 1078 states have call predecessors, (1162), 1094 states have call successors, (1162) [2023-11-19 04:50:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 5280 transitions. [2023-11-19 04:50:58,191 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 5280 transitions. Word has length 17 [2023-11-19 04:50:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:58,191 INFO L495 AbstractCegarLoop]: Abstraction has 3675 states and 5280 transitions. [2023-11-19 04:50:58,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 5280 transitions. [2023-11-19 04:50:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 04:50:58,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:58,197 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 04:50:58,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:50:58,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:58,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash -854546394, now seen corresponding path program 1 times [2023-11-19 04:50:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665365401] [2023-11-19 04:50:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:50:58,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665365401] [2023-11-19 04:50:58,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665365401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:58,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:58,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:50:58,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741866731] [2023-11-19 04:50:58,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:58,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:58,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:58,379 INFO L87 Difference]: Start difference. First operand 3675 states and 5280 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:51:00,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []