./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh --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 7e3ac2fcc053a51503ae18580c98d5f9812f019f35610d9038863980fd24a66a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:50:36,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:50:36,468 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 18:50:36,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:50:36,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:50:36,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:50:36,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:50:36,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:50:36,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:50:36,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:50:36,507 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:50:36,507 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:50:36,508 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:50:36,508 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:50:36,509 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:50:36,509 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:50:36,510 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:50:36,510 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:50:36,511 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:50:36,511 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:50:36,512 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:50:36,512 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:50:36,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:50:36,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:50:36,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:50:36,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:50:36,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:50:36,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:50:36,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:50:36,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:50:36,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:50:36,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:50:36,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:50:36,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:50:36,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:50:36,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:50:36,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:50:36,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:50:36,518 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:50:36,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:50:36,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:50:36,519 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:50:36,519 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:50:36,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:50:36,519 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_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3ac2fcc053a51503ae18580c98d5f9812f019f35610d9038863980fd24a66a [2023-12-02 18:50:36,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:50:36,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:50:36,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:50:36,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:50:36,778 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:50:36,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2023-12-02 18:50:39,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:50:40,028 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:50:40,029 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2023-12-02 18:50:40,082 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/data/fe423888a/90c6593363694d0a9ca3b055e920b905/FLAGf39c76382 [2023-12-02 18:50:40,098 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/data/fe423888a/90c6593363694d0a9ca3b055e920b905 [2023-12-02 18:50:40,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:50:40,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:50:40,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:50:40,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:50:40,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:50:40,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:50:40" (1/1) ... [2023-12-02 18:50:40,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2995cc2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:40, skipping insertion in model container [2023-12-02 18:50:40,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:50:40" (1/1) ... [2023-12-02 18:50:40,296 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:50:43,979 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_246f1982-0ab5-453d-a7bd-861ba71322e6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[423705,423718] [2023-12-02 18:50:44,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:50:44,415 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:50:44,631 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): "er" (i): "memory"); [6840-6841] [2023-12-02 18:50:44,662 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [7921] [2023-12-02 18:50:44,663 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [7928] [2023-12-02 18:50:44,784 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 *)"./arch/x86/include/asm/paravirt.h"), "i" (831), "i" (12UL)); [10494-10495] [2023-12-02 18:50:44,784 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (43UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [10500-10502] [2023-12-02 18:50:44,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [10534] [2023-12-02 18:50:44,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [10537] [2023-12-02 18:50:44,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [10540] [2023-12-02 18:50:44,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [10543] [2023-12-02 18:50:44,789 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (cpu_number)); [10665] [2023-12-02 18:50:44,789 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [10668] [2023-12-02 18:50:44,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [10671] [2023-12-02 18:50:44,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [10674] [2023-12-02 18:50:44,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret_____0): "m" (cpu_number)); [10685] [2023-12-02 18:50:44,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [10688] [2023-12-02 18:50:44,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [10691] [2023-12-02 18:50:44,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [10694] [2023-12-02 18:50:44,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret_____1): "m" (cpu_number)); [10705] [2023-12-02 18:50:44,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [10708] [2023-12-02 18:50:44,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [10711] [2023-12-02 18:50:44,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [10714] [2023-12-02 18:50:44,793 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret_____2): "m" (cpu_number)); [10725] [2023-12-02 18:50:44,793 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [10728] [2023-12-02 18:50:44,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [10731] [2023-12-02 18:50:44,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [10734] [2023-12-02 18:50:44,960 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_246f1982-0ab5-453d-a7bd-861ba71322e6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[423705,423718] [2023-12-02 18:50:44,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:50:45,371 WARN L675 CHandler]: The function __bad_size_call_parameter is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:50:45,372 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:50:45,379 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:50:45,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45 WrapperNode [2023-12-02 18:50:45,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:50:45,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:50:45,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:50:45,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:50:45,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:45,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:45,824 INFO L138 Inliner]: procedures = 649, calls = 4739, calls flagged for inlining = 324, calls inlined = 315, statements flattened = 13849 [2023-12-02 18:50:45,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:50:45,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:50:45,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:50:45,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:50:45,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:45,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:45,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:45,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:46,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:46,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:46,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:46,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:46,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:50:46,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:50:46,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:50:46,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:50:46,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (1/1) ... [2023-12-02 18:50:46,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:50:46,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:50:46,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:50:46,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f1982-0ab5-453d-a7bd-861ba71322e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:50:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2023-12-02 18:50:46,591 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2023-12-02 18:50:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure wait_nack [2023-12-02 18:50:46,596 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_nack [2023-12-02 18:50:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure wait_ack [2023-12-02 18:50:46,597 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_ack [2023-12-02 18:50:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 18:50:46,598 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 18:50:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure clear_cmd_trigger [2023-12-02 18:50:46,598 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_cmd_trigger [2023-12-02 18:50:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 18:50:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 18:50:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure ast_init_dvo [2023-12-02 18:50:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_init_dvo [2023-12-02 18:50:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2023-12-02 18:50:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2023-12-02 18:50:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2023-12-02 18:50:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2023-12-02 18:50:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2023-12-02 18:50:46,600 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2023-12-02 18:50:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure drm_err [2023-12-02 18:50:46,600 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_err [2023-12-02 18:50:46,600 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 18:50:46,600 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 18:50:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure __ww_mutex_lock [2023-12-02 18:50:46,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __ww_mutex_lock [2023-12-02 18:50:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_base_of_ww_mutex [2023-12-02 18:50:46,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_base_of_ww_mutex [2023-12-02 18:50:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2023-12-02 18:50:46,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2023-12-02 18:50:46,602 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_dp501_video_output [2023-12-02 18:50:46,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_dp501_video_output [2023-12-02 18:50:46,602 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2023-12-02 18:50:46,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2023-12-02 18:50:46,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2023-12-02 18:50:46,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2023-12-02 18:50:46,605 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2023-12-02 18:50:46,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2023-12-02 18:50:46,605 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-12-02 18:50:46,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-12-02 18:50:46,605 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 18:50:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 18:50:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2023-12-02 18:50:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2023-12-02 18:50:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2023-12-02 18:50:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2023-12-02 18:50:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:50:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2023-12-02 18:50:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2023-12-02 18:50:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2023-12-02 18:50:46,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2023-12-02 18:50:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure ast_enable_vga [2023-12-02 18:50:46,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_enable_vga [2023-12-02 18:50:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 18:50:46,610 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 18:50:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2023-12-02 18:50:46,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2023-12-02 18:50:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fb_helper_fini [2023-12-02 18:50:46,612 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fb_helper_fini [2023-12-02 18:50:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2023-12-02 18:50:46,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2023-12-02 18:50:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_del_sub_from_lru [2023-12-02 18:50:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_del_sub_from_lru [2023-12-02 18:50:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2023-12-02 18:50:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2023-12-02 18:50:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2023-12-02 18:50:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2023-12-02 18:50:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 18:50:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mindwm [2023-12-02 18:50:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mindwm [2023-12-02 18:50:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2023-12-02 18:50:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2023-12-02 18:50:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2023-12-02 18:50:46,617 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2023-12-02 18:50:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 18:50:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2023-12-02 18:50:46,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2023-12-02 18:50:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure send_ack [2023-12-02 18:50:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure send_ack [2023-12-02 18:50:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2023-12-02 18:50:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2023-12-02 18:50:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:50:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2023-12-02 18:50:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2023-12-02 18:50:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2023-12-02 18:50:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2023-12-02 18:50:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure get_fw_base [2023-12-02 18:50:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fw_base [2023-12-02 18:50:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2023-12-02 18:50:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2023-12-02 18:50:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 18:50:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 18:50:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:50:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure ast_post_gpu [2023-12-02 18:50:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_post_gpu [2023-12-02 18:50:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:50:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2023-12-02 18:50:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2023-12-02 18:50:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_base_of_ww_mutex [2023-12-02 18:50:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_base_of_ww_mutex [2023-12-02 18:50:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 18:50:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 18:50:46,624 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 18:50:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 18:50:46,624 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2023-12-02 18:50:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2023-12-02 18:50:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:50:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 18:50:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2023-12-02 18:50:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2023-12-02 18:50:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2023-12-02 18:50:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2023-12-02 18:50:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2023-12-02 18:50:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2023-12-02 18:50:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2023-12-02 18:50:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2023-12-02 18:50:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2023-12-02 18:50:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2023-12-02 18:50:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 18:50:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 18:50:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2023-12-02 18:50:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2023-12-02 18:50:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-12-02 18:50:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-12-02 18:50:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:50:46,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:50:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 18:50:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 18:50:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 18:50:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 18:50:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure send_nack [2023-12-02 18:50:46,644 INFO L138 BoogieDeclarations]: Found implementation of procedure send_nack [2023-12-02 18:50:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure ast_enable_mmio [2023-12-02 18:50:46,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_enable_mmio [2023-12-02 18:50:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2023-12-02 18:50:46,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2023-12-02 18:50:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2023-12-02 18:50:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2023-12-02 18:50:46,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2023-12-02 18:50:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2023-12-02 18:50:46,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2023-12-02 18:50:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_base_of_ww_mutex [2023-12-02 18:50:46,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_base_of_ww_mutex [2023-12-02 18:50:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2023-12-02 18:50:46,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2023-12-02 18:50:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2023-12-02 18:50:46,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2023-12-02 18:50:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2023-12-02 18:50:46,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2023-12-02 18:50:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 18:50:46,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 18:50:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 18:50:46,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 18:50:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2023-12-02 18:50:46,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2023-12-02 18:50:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 18:50:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 18:50:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:50:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:50:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2023-12-02 18:50:46,650 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2023-12-02 18:50:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2023-12-02 18:50:46,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2023-12-02 18:50:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-12-02 18:50:46,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-12-02 18:50:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-12-02 18:50:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-12-02 18:50:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:50:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2023-12-02 18:50:46,651 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_free [2023-12-02 18:50:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_mutex_54 [2023-12-02 18:50:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_mutex_54 [2023-12-02 18:50:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2023-12-02 18:50:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2023-12-02 18:50:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2023-12-02 18:50:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:50:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure __ww_mutex_lock_interruptible [2023-12-02 18:50:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __ww_mutex_lock_interruptible [2023-12-02 18:50:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-12-02 18:50:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-12-02 18:50:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2023-12-02 18:50:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2023-12-02 18:50:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2023-12-02 18:50:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2023-12-02 18:50:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:50:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure drm_ut_debug_printk [2023-12-02 18:50:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_ut_debug_printk [2023-12-02 18:50:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 18:50:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 18:50:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2023-12-02 18:50:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2023-12-02 18:50:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 18:50:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 18:50:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2023-12-02 18:50:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2023-12-02 18:50:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2023-12-02 18:50:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2023-12-02 18:50:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2023-12-02 18:50:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2023-12-02 18:50:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2023-12-02 18:50:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2023-12-02 18:50:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2023-12-02 18:50:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2023-12-02 18:50:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2023-12-02 18:50:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2023-12-02 18:50:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2023-12-02 18:50:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2023-12-02 18:50:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2023-12-02 18:50:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2023-12-02 18:50:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2023-12-02 18:50:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2023-12-02 18:50:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2023-12-02 18:50:46,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2023-12-02 18:50:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2023-12-02 18:50:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2023-12-02 18:50:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2023-12-02 18:50:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2023-12-02 18:50:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2023-12-02 18:50:46,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2023-12-02 18:50:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo [2023-12-02 18:50:46,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo [2023-12-02 18:50:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 18:50:46,660 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 18:50:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:50:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure ast_moutdwm [2023-12-02 18:50:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_moutdwm [2023-12-02 18:50:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2023-12-02 18:50:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2023-12-02 18:50:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2023-12-02 18:50:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2023-12-02 18:50:46,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 18:50:46,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 18:50:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2023-12-02 18:50:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2023-12-02 18:50:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 18:50:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 18:50:46,662 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2023-12-02 18:50:46,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2023-12-02 18:50:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2023-12-02 18:50:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2023-12-02 18:50:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2023-12-02 18:50:46,663 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2023-12-02 18:50:46,663 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2023-12-02 18:50:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2023-12-02 18:50:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2023-12-02 18:50:46,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2023-12-02 18:50:46,664 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2023-12-02 18:50:46,665 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2023-12-02 18:50:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2023-12-02 18:50:46,670 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2023-12-02 18:50:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2023-12-02 18:50:46,670 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2023-12-02 18:50:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-12-02 18:50:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-12-02 18:50:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2023-12-02 18:50:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2023-12-02 18:50:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2023-12-02 18:50:46,672 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2023-12-02 18:50:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2023-12-02 18:50:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2023-12-02 18:50:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:50:47,769 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:50:47,774 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:50:47,945 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 18:51:03,726 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:51:10,025 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:51:10,025 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 18:51:10,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:51:10 BoogieIcfgContainer [2023-12-02 18:51:10,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:51:10,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:51:10,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:51:10,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:51:10,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:50:40" (1/3) ... [2023-12-02 18:51:10,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8b04bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:51:10, skipping insertion in model container [2023-12-02 18:51:10,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:50:45" (2/3) ... [2023-12-02 18:51:10,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8b04bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:51:10, skipping insertion in model container [2023-12-02 18:51:10,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:51:10" (3/3) ... [2023-12-02 18:51:10,037 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2023-12-02 18:51:10,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:51:10,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:51:10,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:51:10,163 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;@56b90757, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:51:10,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:51:10,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 2664 states, 1615 states have (on average 1.3931888544891642) internal successors, (2250), 1698 states have internal predecessors, (2250), 927 states have call successors, (927), 121 states have call predecessors, (927), 120 states have return successors, (909), 887 states have call predecessors, (909), 909 states have call successors, (909) [2023-12-02 18:51:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-02 18:51:10,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:10,201 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:10,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:51:10,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash 486521305, now seen corresponding path program 1 times [2023-12-02 18:51:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:10,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439327140] [2023-12-02 18:51:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:10,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:51:11,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:11,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439327140] [2023-12-02 18:51:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439327140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:11,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:11,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:51:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690854800] [2023-12-02 18:51:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:11,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:51:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:51:11,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:51:11,622 INFO L87 Difference]: Start difference. First operand has 2664 states, 1615 states have (on average 1.3931888544891642) internal successors, (2250), 1698 states have internal predecessors, (2250), 927 states have call successors, (927), 121 states have call predecessors, (927), 120 states have return successors, (909), 887 states have call predecessors, (909), 909 states have call successors, (909) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-02 18:51:15,444 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 [] [2023-12-02 18:51:17,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:19,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:20,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:22,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:24,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:26,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:28,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:31,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:33,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:35,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:38,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:40,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:42,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:44,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:46,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:48,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:50,304 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 [] [2023-12-02 18:51:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:51,887 INFO L93 Difference]: Finished difference Result 7860 states and 12139 transitions. [2023-12-02 18:51:51,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:51:51,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2023-12-02 18:51:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:51,952 INFO L225 Difference]: With dead ends: 7860 [2023-12-02 18:51:51,952 INFO L226 Difference]: Without dead ends: 5189 [2023-12-02 18:51:51,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:51:51,979 INFO L413 NwaCegarLoop]: 3607 mSDtfsCounter, 3921 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 3 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 7199 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:51,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 7199 Invalid, 961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 948 Invalid, 10 Unknown, 0 Unchecked, 39.8s Time] [2023-12-02 18:51:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2023-12-02 18:51:52,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 5182. [2023-12-02 18:51:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5182 states, 3175 states have (on average 1.382992125984252) internal successors, (4391), 3290 states have internal predecessors, (4391), 1768 states have call successors, (1768), 239 states have call predecessors, (1768), 238 states have return successors, (1756), 1712 states have call predecessors, (1756), 1756 states have call successors, (1756) [2023-12-02 18:51:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5182 states to 5182 states and 7915 transitions. [2023-12-02 18:51:52,522 INFO L78 Accepts]: Start accepts. Automaton has 5182 states and 7915 transitions. Word has length 162 [2023-12-02 18:51:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:52,523 INFO L495 AbstractCegarLoop]: Abstraction has 5182 states and 7915 transitions. [2023-12-02 18:51:52,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-02 18:51:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5182 states and 7915 transitions. [2023-12-02 18:51:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-02 18:51:52,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:52,529 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:52,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:51:52,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:51:52,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash -268126669, now seen corresponding path program 1 times [2023-12-02 18:51:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74099165] [2023-12-02 18:51:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:51:53,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74099165] [2023-12-02 18:51:53,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74099165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:53,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:53,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:51:53,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690455852] [2023-12-02 18:51:53,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:53,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:51:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:51:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:51:53,461 INFO L87 Difference]: Start difference. First operand 5182 states and 7915 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:51:55,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:51:57,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:01,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:03,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:05,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:08,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:10,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:11,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:13,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:15,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:17,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:20,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:22,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:24,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:26,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:28,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:30,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:31,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:34,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:36,439 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 [] [2023-12-02 18:52:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:37,406 INFO L93 Difference]: Finished difference Result 10283 states and 15758 transitions. [2023-12-02 18:52:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:52:37,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2023-12-02 18:52:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:37,468 INFO L225 Difference]: With dead ends: 10283 [2023-12-02 18:52:37,469 INFO L226 Difference]: Without dead ends: 10277 [2023-12-02 18:52:37,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:52:37,477 INFO L413 NwaCegarLoop]: 3624 mSDtfsCounter, 3956 mSDsluCounter, 3486 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 7 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3956 SdHoareTripleChecker+Valid, 7110 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:37,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3956 Valid, 7110 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 946 Invalid, 15 Unknown, 0 Unchecked, 43.6s Time] [2023-12-02 18:52:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10277 states. [2023-12-02 18:52:38,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10277 to 10273. [2023-12-02 18:52:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10273 states, 6305 states have (on average 1.3838223632038065) internal successors, (8725), 6530 states have internal predecessors, (8725), 3499 states have call successors, (3499), 475 states have call predecessors, (3499), 468 states have return successors, (3519), 3387 states have call predecessors, (3519), 3487 states have call successors, (3519) [2023-12-02 18:52:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10273 states to 10273 states and 15743 transitions. [2023-12-02 18:52:38,233 INFO L78 Accepts]: Start accepts. Automaton has 10273 states and 15743 transitions. Word has length 165 [2023-12-02 18:52:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:38,234 INFO L495 AbstractCegarLoop]: Abstraction has 10273 states and 15743 transitions. [2023-12-02 18:52:38,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:52:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 10273 states and 15743 transitions. [2023-12-02 18:52:38,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 18:52:38,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:38,240 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:38,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:52:38,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:38,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash 276634252, now seen corresponding path program 1 times [2023-12-02 18:52:38,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:38,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438031714] [2023-12-02 18:52:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:52:38,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:38,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438031714] [2023-12-02 18:52:38,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438031714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:38,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:38,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:52:38,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75366215] [2023-12-02 18:52:38,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:38,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:52:38,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:38,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:52:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:52:38,893 INFO L87 Difference]: Start difference. First operand 10273 states and 15743 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:52:41,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:43,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:47,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:49,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:52,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:52:54,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:54,260 INFO L93 Difference]: Finished difference Result 10275 states and 15744 transitions. [2023-12-02 18:52:54,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:52:54,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 166 [2023-12-02 18:52:54,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:54,327 INFO L225 Difference]: With dead ends: 10275 [2023-12-02 18:52:54,327 INFO L226 Difference]: Without dead ends: 10272 [2023-12-02 18:52:54,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:52:54,337 INFO L413 NwaCegarLoop]: 3557 mSDtfsCounter, 3980 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3980 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:54,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3980 Valid, 3557 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 468 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2023-12-02 18:52:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2023-12-02 18:52:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 10272. [2023-12-02 18:52:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10272 states, 6305 states have (on average 1.3836637589214908) internal successors, (8724), 6529 states have internal predecessors, (8724), 3498 states have call successors, (3498), 475 states have call predecessors, (3498), 468 states have return successors, (3519), 3387 states have call predecessors, (3519), 3487 states have call successors, (3519) [2023-12-02 18:52:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10272 states to 10272 states and 15741 transitions. [2023-12-02 18:52:54,997 INFO L78 Accepts]: Start accepts. Automaton has 10272 states and 15741 transitions. Word has length 166 [2023-12-02 18:52:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:54,998 INFO L495 AbstractCegarLoop]: Abstraction has 10272 states and 15741 transitions. [2023-12-02 18:52:54,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:52:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10272 states and 15741 transitions. [2023-12-02 18:52:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-02 18:52:55,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:55,002 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:55,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:52:55,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:52:55,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash -15641514, now seen corresponding path program 1 times [2023-12-02 18:52:55,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:55,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648410566] [2023-12-02 18:52:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:55,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:52:55,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:55,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648410566] [2023-12-02 18:52:55,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648410566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:52:55,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:52:55,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:52:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350668807] [2023-12-02 18:52:55,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:52:55,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:52:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:52:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:52:55,636 INFO L87 Difference]: Start difference. First operand 10272 states and 15741 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:52:59,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:02,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:04,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:05,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:08,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:10,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:11,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:11,392 INFO L93 Difference]: Finished difference Result 10274 states and 15742 transitions. [2023-12-02 18:53:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:53:11,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 167 [2023-12-02 18:53:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:11,436 INFO L225 Difference]: With dead ends: 10274 [2023-12-02 18:53:11,436 INFO L226 Difference]: Without dead ends: 10271 [2023-12-02 18:53:11,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:11,447 INFO L413 NwaCegarLoop]: 3555 mSDtfsCounter, 3977 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3977 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:11,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3977 Valid, 3555 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 468 Invalid, 4 Unknown, 0 Unchecked, 15.4s Time] [2023-12-02 18:53:11,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10271 states. [2023-12-02 18:53:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10271 to 10271. [2023-12-02 18:53:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10271 states, 6305 states have (on average 1.3835051546391752) internal successors, (8723), 6528 states have internal predecessors, (8723), 3497 states have call successors, (3497), 475 states have call predecessors, (3497), 468 states have return successors, (3519), 3387 states have call predecessors, (3519), 3487 states have call successors, (3519) [2023-12-02 18:53:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 15739 transitions. [2023-12-02 18:53:12,206 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 15739 transitions. Word has length 167 [2023-12-02 18:53:12,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:12,206 INFO L495 AbstractCegarLoop]: Abstraction has 10271 states and 15739 transitions. [2023-12-02 18:53:12,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:53:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 15739 transitions. [2023-12-02 18:53:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-02 18:53:12,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:12,210 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:12,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:53:12,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:53:12,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:12,211 INFO L85 PathProgramCache]: Analyzing trace with hash 383224004, now seen corresponding path program 1 times [2023-12-02 18:53:12,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:12,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740020448] [2023-12-02 18:53:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:12,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:53:12,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740020448] [2023-12-02 18:53:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740020448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:12,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:12,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:53:12,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933991526] [2023-12-02 18:53:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:12,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:53:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:53:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:12,814 INFO L87 Difference]: Start difference. First operand 10271 states and 15739 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-02 18:53:15,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:17,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:19,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:21,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:23,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:25,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:29,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:31,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:34,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:36,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:38,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:40,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:42,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:44,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:46,796 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 [] [2023-12-02 18:53:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:48,923 INFO L93 Difference]: Finished difference Result 29277 states and 44779 transitions. [2023-12-02 18:53:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:53:48,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 168 [2023-12-02 18:53:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:48,981 INFO L225 Difference]: With dead ends: 29277 [2023-12-02 18:53:48,981 INFO L226 Difference]: Without dead ends: 19041 [2023-12-02 18:53:49,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:49,025 INFO L413 NwaCegarLoop]: 3557 mSDtfsCounter, 3420 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3420 SdHoareTripleChecker+Valid, 7048 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:49,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3420 Valid, 7048 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 948 Invalid, 10 Unknown, 0 Unchecked, 35.3s Time] [2023-12-02 18:53:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19041 states. [2023-12-02 18:53:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19041 to 19017. [2023-12-02 18:53:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19017 states, 11641 states have (on average 1.3805514990121124) internal successors, (16071), 12000 states have internal predecessors, (16071), 6469 states have call successors, (6469), 919 states have call predecessors, (6469), 906 states have return successors, (6521), 6317 states have call predecessors, (6521), 6459 states have call successors, (6521) [2023-12-02 18:53:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19017 states to 19017 states and 29061 transitions. [2023-12-02 18:53:50,164 INFO L78 Accepts]: Start accepts. Automaton has 19017 states and 29061 transitions. Word has length 168 [2023-12-02 18:53:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:50,165 INFO L495 AbstractCegarLoop]: Abstraction has 19017 states and 29061 transitions. [2023-12-02 18:53:50,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-02 18:53:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 19017 states and 29061 transitions. [2023-12-02 18:53:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-02 18:53:50,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:50,168 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:50,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:53:50,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:53:50,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:50,169 INFO L85 PathProgramCache]: Analyzing trace with hash -486250801, now seen corresponding path program 1 times [2023-12-02 18:53:50,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:50,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211985196] [2023-12-02 18:53:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:50,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:53:50,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211985196] [2023-12-02 18:53:50,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211985196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:50,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:50,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:53:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059003018] [2023-12-02 18:53:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:50,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:53:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:53:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:50,737 INFO L87 Difference]: Start difference. First operand 19017 states and 29061 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:53:53,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:56,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:53:58,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:00,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:02,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:04,166 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 [] [2023-12-02 18:54:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:07,031 INFO L93 Difference]: Finished difference Result 19019 states and 29062 transitions. [2023-12-02 18:54:07,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:54:07,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2023-12-02 18:54:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:07,106 INFO L225 Difference]: With dead ends: 19019 [2023-12-02 18:54:07,106 INFO L226 Difference]: Without dead ends: 19016 [2023-12-02 18:54:07,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:54:07,120 INFO L413 NwaCegarLoop]: 3553 mSDtfsCounter, 3974 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3974 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:07,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3974 Valid, 3553 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 5 Unknown, 0 Unchecked, 15.7s Time] [2023-12-02 18:54:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19016 states. [2023-12-02 18:54:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19016 to 19016. [2023-12-02 18:54:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19016 states, 11641 states have (on average 1.3804655957391976) internal successors, (16070), 11999 states have internal predecessors, (16070), 6468 states have call successors, (6468), 919 states have call predecessors, (6468), 906 states have return successors, (6521), 6317 states have call predecessors, (6521), 6459 states have call successors, (6521) [2023-12-02 18:54:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19016 states to 19016 states and 29059 transitions. [2023-12-02 18:54:08,363 INFO L78 Accepts]: Start accepts. Automaton has 19016 states and 29059 transitions. Word has length 168 [2023-12-02 18:54:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:08,364 INFO L495 AbstractCegarLoop]: Abstraction has 19016 states and 29059 transitions. [2023-12-02 18:54:08,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:54:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 19016 states and 29059 transitions. [2023-12-02 18:54:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-02 18:54:08,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:08,366 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:08,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 18:54:08,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:08,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:08,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2104735353, now seen corresponding path program 1 times [2023-12-02 18:54:08,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:54:08,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046245273] [2023-12-02 18:54:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:08,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:54:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:54:09,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:54:09,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046245273] [2023-12-02 18:54:09,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046245273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:09,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:09,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:54:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717841200] [2023-12-02 18:54:09,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:09,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:54:09,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:54:09,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:54:09,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:54:09,041 INFO L87 Difference]: Start difference. First operand 19016 states and 29059 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:54:12,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:14,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:16,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:18,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:19,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:22,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:24,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:26,088 INFO L93 Difference]: Finished difference Result 19018 states and 29060 transitions. [2023-12-02 18:54:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:54:26,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2023-12-02 18:54:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:26,155 INFO L225 Difference]: With dead ends: 19018 [2023-12-02 18:54:26,155 INFO L226 Difference]: Without dead ends: 19015 [2023-12-02 18:54:26,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:54:26,169 INFO L413 NwaCegarLoop]: 3551 mSDtfsCounter, 3971 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:26,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3971 Valid, 3551 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 468 Invalid, 4 Unknown, 0 Unchecked, 16.3s Time] [2023-12-02 18:54:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19015 states. [2023-12-02 18:54:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19015 to 19015. [2023-12-02 18:54:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19015 states, 11641 states have (on average 1.380379692466283) internal successors, (16069), 11998 states have internal predecessors, (16069), 6467 states have call successors, (6467), 919 states have call predecessors, (6467), 906 states have return successors, (6521), 6317 states have call predecessors, (6521), 6459 states have call successors, (6521) [2023-12-02 18:54:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19015 states to 19015 states and 29057 transitions. [2023-12-02 18:54:27,493 INFO L78 Accepts]: Start accepts. Automaton has 19015 states and 29057 transitions. Word has length 169 [2023-12-02 18:54:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:27,494 INFO L495 AbstractCegarLoop]: Abstraction has 19015 states and 29057 transitions. [2023-12-02 18:54:27,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:54:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19015 states and 29057 transitions. [2023-12-02 18:54:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-02 18:54:27,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:27,496 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:27,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 18:54:27,496 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:27,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 820932370, now seen corresponding path program 1 times [2023-12-02 18:54:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:54:27,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272661133] [2023-12-02 18:54:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:27,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:54:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:54:27,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:54:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272661133] [2023-12-02 18:54:27,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272661133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:27,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:27,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:54:27,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732882927] [2023-12-02 18:54:27,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:27,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:54:27,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:54:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:54:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:54:27,984 INFO L87 Difference]: Start difference. First operand 19015 states and 29057 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:54:30,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:34,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:36,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:37,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:40,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:42,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:44,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:46,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:48,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:50,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:52,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:54,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:56,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:54:58,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:00,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:02,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:04,579 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 [] [2023-12-02 18:55:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:55:08,652 INFO L93 Difference]: Finished difference Result 56491 states and 86513 transitions. [2023-12-02 18:55:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:55:08,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2023-12-02 18:55:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:55:08,825 INFO L225 Difference]: With dead ends: 56491 [2023-12-02 18:55:08,825 INFO L226 Difference]: Without dead ends: 37511 [2023-12-02 18:55:08,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:55:08,943 INFO L413 NwaCegarLoop]: 4019 mSDtfsCounter, 3845 mSDsluCounter, 3486 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 5 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3845 SdHoareTripleChecker+Valid, 7505 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:55:08,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3845 Valid, 7505 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1000 Invalid, 12 Unknown, 0 Unchecked, 38.9s Time] [2023-12-02 18:55:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37511 states. [2023-12-02 18:55:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37511 to 37483. [2023-12-02 18:55:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37483 states, 23002 states have (on average 1.3795756890705155) internal successors, (31733), 23640 states have internal predecessors, (31733), 12726 states have call successors, (12726), 1796 states have call predecessors, (12726), 1754 states have return successors, (13005), 12462 states have call predecessors, (13005), 12717 states have call successors, (13005) [2023-12-02 18:55:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37483 states to 37483 states and 57464 transitions. [2023-12-02 18:55:11,550 INFO L78 Accepts]: Start accepts. Automaton has 37483 states and 57464 transitions. Word has length 170 [2023-12-02 18:55:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:55:11,551 INFO L495 AbstractCegarLoop]: Abstraction has 37483 states and 57464 transitions. [2023-12-02 18:55:11,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:55:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 37483 states and 57464 transitions. [2023-12-02 18:55:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-02 18:55:11,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:55:11,553 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:55:11,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 18:55:11,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:55:11,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:55:11,554 INFO L85 PathProgramCache]: Analyzing trace with hash -322249572, now seen corresponding path program 1 times [2023-12-02 18:55:11,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:55:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299674313] [2023-12-02 18:55:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:55:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:55:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:55:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-02 18:55:12,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:55:12,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299674313] [2023-12-02 18:55:12,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299674313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:55:12,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:55:12,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:55:12,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254755601] [2023-12-02 18:55:12,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:55:12,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:55:12,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:55:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:55:12,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:55:12,109 INFO L87 Difference]: Start difference. First operand 37483 states and 57464 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:55:15,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:18,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:20,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:22,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:24,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:55:26,752 INFO L93 Difference]: Finished difference Result 37485 states and 57465 transitions. [2023-12-02 18:55:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:55:26,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2023-12-02 18:55:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:55:26,874 INFO L225 Difference]: With dead ends: 37485 [2023-12-02 18:55:26,874 INFO L226 Difference]: Without dead ends: 37474 [2023-12-02 18:55:26,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:55:26,894 INFO L413 NwaCegarLoop]: 3550 mSDtfsCounter, 3967 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:55:26,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3967 Valid, 3550 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 468 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2023-12-02 18:55:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37474 states. [2023-12-02 18:55:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37474 to 37474. [2023-12-02 18:55:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37474 states, 22994 states have (on average 1.3794033226058973) internal successors, (31718), 23631 states have internal predecessors, (31718), 12725 states have call successors, (12725), 1796 states have call predecessors, (12725), 1754 states have return successors, (13005), 12462 states have call predecessors, (13005), 12717 states have call successors, (13005) [2023-12-02 18:55:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37474 states to 37474 states and 57448 transitions. [2023-12-02 18:55:29,818 INFO L78 Accepts]: Start accepts. Automaton has 37474 states and 57448 transitions. Word has length 171 [2023-12-02 18:55:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:55:29,818 INFO L495 AbstractCegarLoop]: Abstraction has 37474 states and 57448 transitions. [2023-12-02 18:55:29,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 18:55:29,818 INFO L276 IsEmpty]: Start isEmpty. Operand 37474 states and 57448 transitions. [2023-12-02 18:55:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-02 18:55:29,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:55:29,821 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:55:29,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 18:55:29,821 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:55:29,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:55:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1422793196, now seen corresponding path program 1 times [2023-12-02 18:55:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:55:29,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695124716] [2023-12-02 18:55:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:55:29,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:55:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:55:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-12-02 18:55:30,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:55:30,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695124716] [2023-12-02 18:55:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695124716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:55:30,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:55:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:55:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267610187] [2023-12-02 18:55:30,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:55:30,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:55:30,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:55:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:55:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:55:30,204 INFO L87 Difference]: Start difference. First operand 37474 states and 57448 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 18:55:34,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:36,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:38,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:41,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:43,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:45,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:49,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:52,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:54,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:57,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:55:59,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:01,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:03,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:05,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:07,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:09,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:11,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:13,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:15,184 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 [] [2023-12-02 18:56:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:56:17,805 INFO L93 Difference]: Finished difference Result 111980 states and 171673 transitions. [2023-12-02 18:56:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:56:17,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 201 [2023-12-02 18:56:17,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:56:18,133 INFO L225 Difference]: With dead ends: 111980 [2023-12-02 18:56:18,133 INFO L226 Difference]: Without dead ends: 74541 [2023-12-02 18:56:18,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:56:18,238 INFO L413 NwaCegarLoop]: 4076 mSDtfsCounter, 3953 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3953 SdHoareTripleChecker+Valid, 7570 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:56:18,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3953 Valid, 7570 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 992 Invalid, 14 Unknown, 0 Unchecked, 43.6s Time] [2023-12-02 18:56:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74541 states. [2023-12-02 18:56:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74541 to 74506. [2023-12-02 18:56:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74506 states, 45708 states have (on average 1.3799772468714449) internal successors, (63076), 46981 states have internal predecessors, (63076), 25305 states have call successors, (25305), 3570 states have call predecessors, (25305), 3492 states have return successors, (25845), 24786 states have call predecessors, (25845), 25297 states have call successors, (25845) [2023-12-02 18:56:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74506 states to 74506 states and 114226 transitions. [2023-12-02 18:56:23,998 INFO L78 Accepts]: Start accepts. Automaton has 74506 states and 114226 transitions. Word has length 201 [2023-12-02 18:56:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:56:23,999 INFO L495 AbstractCegarLoop]: Abstraction has 74506 states and 114226 transitions. [2023-12-02 18:56:23,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 18:56:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 74506 states and 114226 transitions. [2023-12-02 18:56:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-02 18:56:24,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:56:24,002 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:56:24,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 18:56:24,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:56:24,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:56:24,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2051460703, now seen corresponding path program 1 times [2023-12-02 18:56:24,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:56:24,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692128264] [2023-12-02 18:56:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:56:24,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:56:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:56:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2023-12-02 18:56:24,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:56:24,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692128264] [2023-12-02 18:56:24,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692128264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:56:24,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:56:24,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:56:24,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323311308] [2023-12-02 18:56:24,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:56:24,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:56:24,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:56:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:56:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:56:24,576 INFO L87 Difference]: Start difference. First operand 74506 states and 114226 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 18:56:27,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:29,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:31,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:33,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:34,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:36,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:38,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:40,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:49,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:50,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:54,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:56,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:57,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:56:59,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:01,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:03,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:05,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:07,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:09,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:14,936 INFO L93 Difference]: Finished difference Result 222352 states and 340871 transitions. [2023-12-02 18:57:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:57:14,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 238 [2023-12-02 18:57:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:15,566 INFO L225 Difference]: With dead ends: 222352 [2023-12-02 18:57:15,566 INFO L226 Difference]: Without dead ends: 147881 [2023-12-02 18:57:15,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:15,814 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 3966 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3966 SdHoareTripleChecker+Valid, 7601 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:15,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3966 Valid, 7601 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 996 Invalid, 11 Unknown, 0 Unchecked, 42.3s Time] [2023-12-02 18:57:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147881 states. [2023-12-02 18:57:27,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147881 to 147850. [2023-12-02 18:57:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147850 states, 90728 states have (on average 1.380566087646592) internal successors, (125256), 93265 states have internal predecessors, (125256), 50177 states have call successors, (50177), 7098 states have call predecessors, (50177), 6944 states have return successors, (51201), 49146 states have call predecessors, (51201), 50169 states have call successors, (51201) [2023-12-02 18:57:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147850 states to 147850 states and 226634 transitions. [2023-12-02 18:57:28,503 INFO L78 Accepts]: Start accepts. Automaton has 147850 states and 226634 transitions. Word has length 238 [2023-12-02 18:57:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:28,504 INFO L495 AbstractCegarLoop]: Abstraction has 147850 states and 226634 transitions. [2023-12-02 18:57:28,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 18:57:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 147850 states and 226634 transitions. [2023-12-02 18:57:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-02 18:57:28,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:28,515 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:28,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 18:57:28,515 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:57:28,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash -147071041, now seen corresponding path program 1 times [2023-12-02 18:57:28,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:28,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571934587] [2023-12-02 18:57:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:28,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2023-12-02 18:57:29,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:29,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571934587] [2023-12-02 18:57:29,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571934587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:57:29,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:57:29,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:57:29,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117096607] [2023-12-02 18:57:29,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:57:29,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:57:29,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:29,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:57:29,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:57:29,236 INFO L87 Difference]: Start difference. First operand 147850 states and 226634 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 18:57:32,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:36,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:37,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:39,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:41,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:43,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:44,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:54,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:56,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:57:58,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:05,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:07,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:09,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:11,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:13,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:15,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:17,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:19,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:20,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:58:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:58:28,238 INFO L93 Difference]: Finished difference Result 435328 states and 666915 transitions. [2023-12-02 18:58:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:58:28,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 286 [2023-12-02 18:58:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:58:29,812 INFO L225 Difference]: With dead ends: 435328 [2023-12-02 18:58:29,812 INFO L226 Difference]: Without dead ends: 287513 [2023-12-02 18:58:30,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:58:30,326 INFO L413 NwaCegarLoop]: 4147 mSDtfsCounter, 3760 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3760 SdHoareTripleChecker+Valid, 7641 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:58:30,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3760 Valid, 7641 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 992 Invalid, 14 Unknown, 0 Unchecked, 42.8s Time] [2023-12-02 18:58:30,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287513 states. [2023-12-02 18:58:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287513 to 287454. [2023-12-02 18:58:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287454 states, 175948 states have (on average 1.3793620842521654) internal successors, (242696), 180605 states have internal predecessors, (242696), 97777 states have call successors, (97777), 14034 states have call predecessors, (97777), 13728 states have return successors, (99737), 95942 states have call predecessors, (99737), 97769 states have call successors, (99737) [2023-12-02 18:58:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287454 states to 287454 states and 440210 transitions. [2023-12-02 18:58:56,115 INFO L78 Accepts]: Start accepts. Automaton has 287454 states and 440210 transitions. Word has length 286 [2023-12-02 18:58:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:58:56,116 INFO L495 AbstractCegarLoop]: Abstraction has 287454 states and 440210 transitions. [2023-12-02 18:58:56,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-02 18:58:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 287454 states and 440210 transitions. [2023-12-02 18:58:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-02 18:58:56,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:58:56,126 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:58:56,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 18:58:56,126 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:58:56,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:58:56,127 INFO L85 PathProgramCache]: Analyzing trace with hash -556385036, now seen corresponding path program 1 times [2023-12-02 18:58:56,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:58:56,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904245624] [2023-12-02 18:58:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:56,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:58:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:58:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2023-12-02 18:58:56,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:58:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904245624] [2023-12-02 18:58:56,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904245624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:58:56,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:58:56,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:58:56,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164231625] [2023-12-02 18:58:56,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:58:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:58:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:58:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:58:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:58:56,596 INFO L87 Difference]: Start difference. First operand 287454 states and 440210 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 18:58:59,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:01,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:03,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:05,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:07,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:09,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:11,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:27,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:36,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:38,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:40,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:41,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:43,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:45,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:47,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:49,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:59:51,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:00:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:00:06,157 INFO L93 Difference]: Finished difference Result 811740 states and 1241211 transitions. [2023-12-02 19:00:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:00:06,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 287 [2023-12-02 19:00:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:00:08,869 INFO L225 Difference]: With dead ends: 811740 [2023-12-02 19:00:08,869 INFO L226 Difference]: Without dead ends: 524321 [2023-12-02 19:00:10,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:00:10,030 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 3353 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 7778 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:00:10,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 7778 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1091 Invalid, 10 Unknown, 0 Unchecked, 38.8s Time] [2023-12-02 19:00:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524321 states. [2023-12-02 19:00:53,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524321 to 524230. [2023-12-02 19:00:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524230 states, 321620 states have (on average 1.3794415770163546) internal successors, (443656), 330165 states have internal predecessors, (443656), 176913 states have call successors, (176913), 26306 states have call predecessors, (176913), 25696 states have return successors, (180265), 173630 states have call predecessors, (180265), 176905 states have call successors, (180265) [2023-12-02 19:00:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524230 states to 524230 states and 800834 transitions. [2023-12-02 19:00:58,074 INFO L78 Accepts]: Start accepts. Automaton has 524230 states and 800834 transitions. Word has length 287 [2023-12-02 19:00:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:00:58,075 INFO L495 AbstractCegarLoop]: Abstraction has 524230 states and 800834 transitions. [2023-12-02 19:00:58,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 19:00:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 524230 states and 800834 transitions. [2023-12-02 19:00:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-12-02 19:00:58,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:00:58,086 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:00:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:00:58,086 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:00:58,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:00:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1413015091, now seen corresponding path program 1 times [2023-12-02 19:00:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:00:58,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282664812] [2023-12-02 19:00:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:00:58,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:00:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:00:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2023-12-02 19:00:58,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:00:58,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282664812] [2023-12-02 19:00:58,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282664812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:00:58,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:00:58,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:00:58,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477921966] [2023-12-02 19:00:58,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:00:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:00:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:00:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:00:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:00:58,648 INFO L87 Difference]: Start difference. First operand 524230 states and 800834 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:01:01,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:03,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:06,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:07,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:09,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:11,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:13,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:24,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:26,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:39,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:57,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:01:59,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:01,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:03,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:05,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:07,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:09,074 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 []