./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-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.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_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/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_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/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_322ed6b6-b00a-4c79-b154-b775a4615467/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 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:38:08,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:38:08,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:38:08,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:38:08,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:38:08,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:38:08,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:38:08,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:38:08,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:38:08,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:38:08,921 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:38:08,921 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:38:08,921 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:38:08,922 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:38:08,922 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:38:08,923 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:38:08,923 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:38:08,924 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:38:08,924 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:38:08,925 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:38:08,925 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:38:08,926 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:38:08,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:38:08,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:38:08,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:38:08,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:38:08,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:38:08,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:38:08,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:38:08,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:38:08,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:38:08,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:38:08,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:38:08,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:38:08,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:38:08,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:38:08,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:38:08,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:38:08,931 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:38:08,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:38:08,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:38:08,932 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:38:08,932 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:38:08,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:38:08,933 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_322ed6b6-b00a-4c79-b154-b775a4615467/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a [2023-12-02 19:38:09,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:38:09,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:38:09,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:38:09,177 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:38:09,177 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:38:09,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2023-12-02 19:38:11,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:38:12,423 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:38:12,423 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2023-12-02 19:38:12,461 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/data/f73871e83/dbf4d8bb4f0141e7a555b374577c52bc/FLAG68ff69d9c [2023-12-02 19:38:12,476 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/data/f73871e83/dbf4d8bb4f0141e7a555b374577c52bc [2023-12-02 19:38:12,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:38:12,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:38:12,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:38:12,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:38:12,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:38:12,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:38:12" (1/1) ... [2023-12-02 19:38:12,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c6407c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:12, skipping insertion in model container [2023-12-02 19:38:12,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:38:12" (1/1) ... [2023-12-02 19:38:12,619 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:38:14,036 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_322ed6b6-b00a-4c79-b154-b775a4615467/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2023-12-02 19:38:14,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:38:14,131 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:38:14,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5941] [2023-12-02 19:38:14,272 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5948] [2023-12-02 19:38:14,277 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)); [6077-6078] [2023-12-02 19:38:14,278 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"); [6083-6085] [2023-12-02 19:38:14,279 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" (836), "i" (12UL)); [6107-6108] [2023-12-02 19:38:14,280 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" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [6113-6115] [2023-12-02 19:38:14,281 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" (841), "i" (12UL)); [6136-6137] [2023-12-02 19:38:14,281 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" (45UL), [paravirt_opptr] "i" (& pv_irq_ops.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [6142-6144] [2023-12-02 19:38:14,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [6215] [2023-12-02 19:38:14,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [6222] [2023-12-02 19:38:14,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [6239] [2023-12-02 19:38:14,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [6247] [2023-12-02 19:38:14,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [6254] [2023-12-02 19:38:14,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [6262] [2023-12-02 19:38:14,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsw": "+S" (addr), "+c" (count): "d" (port)); [6269] [2023-12-02 19:38:14,287 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insw": "+D" (addr), "+c" (count): "d" (port)); [6276] [2023-12-02 19:38:14,465 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_322ed6b6-b00a-4c79-b154-b775a4615467/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2023-12-02 19:38:14,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:38:14,654 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:38:14,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14 WrapperNode [2023-12-02 19:38:14,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:38:14,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:38:14,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:38:14,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:38:14,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:14,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:14,900 INFO L138 Inliner]: procedures = 235, calls = 2318, calls flagged for inlining = 119, calls inlined = 115, statements flattened = 5999 [2023-12-02 19:38:14,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:38:14,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:38:14,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:38:14,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:38:14,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:14,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:14,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:14,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:15,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:15,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:15,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:15,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:15,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:38:15,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:38:15,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:38:15,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:38:15,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (1/1) ... [2023-12-02 19:38:15,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:38:15,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:38:15,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:38:15,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_322ed6b6-b00a-4c79-b154-b775a4615467/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:38:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure smc_ioctl [2023-12-02 19:38:15,337 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_ioctl [2023-12-02 19:38:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2023-12-02 19:38:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2023-12-02 19:38:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:38:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:38:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2023-12-02 19:38:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2023-12-02 19:38:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 19:38:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 19:38:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2023-12-02 19:38:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2023-12-02 19:38:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-12-02 19:38:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-12-02 19:38:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 19:38:15,340 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 19:38:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2023-12-02 19:38:15,341 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2023-12-02 19:38:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-12-02 19:38:15,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-12-02 19:38:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:38:15,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:38:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2023-12-02 19:38:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2023-12-02 19:38:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2023-12-02 19:38:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2023-12-02 19:38:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2023-12-02 19:38:15,343 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2023-12-02 19:38:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 19:38:15,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 19:38:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 19:38:15,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 19:38:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_notice [2023-12-02 19:38:15,344 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_notice [2023-12-02 19:38:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 19:38:15,344 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 19:38:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 19:38:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 19:38:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 19:38:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 19:38:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2023-12-02 19:38:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2023-12-02 19:38:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-12-02 19:38:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-12-02 19:38:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-12-02 19:38:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-12-02 19:38:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-12-02 19:38:15,347 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-12-02 19:38:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:38:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2023-12-02 19:38:15,347 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2023-12-02 19:38:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 19:38:15,348 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 19:38:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-12-02 19:38:15,348 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-12-02 19:38:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:38:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-12-02 19:38:15,349 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-12-02 19:38:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 19:38:15,349 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 19:38:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2023-12-02 19:38:15,350 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2023-12-02 19:38:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2023-12-02 19:38:15,350 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2023-12-02 19:38:15,350 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 19:38:15,350 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 19:38:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-12-02 19:38:15,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-12-02 19:38:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure dev_notice [2023-12-02 19:38:15,351 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_notice [2023-12-02 19:38:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 19:38:15,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 19:38:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:38:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:38:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2023-12-02 19:38:15,352 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2023-12-02 19:38:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 19:38:15,353 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 19:38:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2023-12-02 19:38:15,353 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2023-12-02 19:38:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-12-02 19:38:15,353 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-12-02 19:38:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2023-12-02 19:38:15,354 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2023-12-02 19:38:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 19:38:15,354 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 19:38:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-12-02 19:38:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-12-02 19:38:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 19:38:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 19:38:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 19:38:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 19:38:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-12-02 19:38:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-12-02 19:38:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2023-12-02 19:38:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2023-12-02 19:38:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:38:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2023-12-02 19:38:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2023-12-02 19:38:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 19:38:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 19:38:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 19:38:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 19:38:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 19:38:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 19:38:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-12-02 19:38:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-12-02 19:38:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2023-12-02 19:38:15,359 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2023-12-02 19:38:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:38:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 19:38:15,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 19:38:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2023-12-02 19:38:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2023-12-02 19:38:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2023-12-02 19:38:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2023-12-02 19:38:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2023-12-02 19:38:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2023-12-02 19:38:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:38:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:38:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-12-02 19:38:15,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-12-02 19:38:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:38:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-12-02 19:38:15,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-12-02 19:38:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2023-12-02 19:38:15,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2023-12-02 19:38:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:38:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 19:38:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 19:38:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:38:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2023-12-02 19:38:15,363 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2023-12-02 19:38:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure s9k_config [2023-12-02 19:38:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure s9k_config [2023-12-02 19:38:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2023-12-02 19:38:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2023-12-02 19:38:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-12-02 19:38:15,364 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-12-02 19:38:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2023-12-02 19:38:15,365 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2023-12-02 19:38:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:38:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-12-02 19:38:15,365 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-12-02 19:38:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2023-12-02 19:38:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2023-12-02 19:38:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-12-02 19:38:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-12-02 19:38:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-12-02 19:38:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-12-02 19:38:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-12-02 19:38:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-12-02 19:38:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:38:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:38:15,970 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:38:15,974 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:38:17,245 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:38:24,289 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:38:26,192 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:38:26,192 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:38:26,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:38:26 BoogieIcfgContainer [2023-12-02 19:38:26,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:38:26,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:38:26,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:38:26,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:38:26,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:38:12" (1/3) ... [2023-12-02 19:38:26,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f404501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:38:26, skipping insertion in model container [2023-12-02 19:38:26,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:38:14" (2/3) ... [2023-12-02 19:38:26,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f404501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:38:26, skipping insertion in model container [2023-12-02 19:38:26,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:38:26" (3/3) ... [2023-12-02 19:38:26,203 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2023-12-02 19:38:26,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:38:26,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:38:26,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:38:26,310 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;@3f6a1e46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:38:26,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:38:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 1321 states, 785 states have (on average 1.3235668789808916) internal successors, (1039), 815 states have internal predecessors, (1039), 464 states have call successors, (464), 71 states have call predecessors, (464), 70 states have return successors, (458), 451 states have call predecessors, (458), 458 states have call successors, (458) [2023-12-02 19:38:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-02 19:38:26,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:38:26,371 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:38:26,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:38:26,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:38:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1953553377, now seen corresponding path program 1 times [2023-12-02 19:38:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:38:26,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327503350] [2023-12-02 19:38:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:38:26,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:38:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:38:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-02 19:38:30,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:38:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327503350] [2023-12-02 19:38:30,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327503350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:38:30,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:38:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:38:30,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003206803] [2023-12-02 19:38:30,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:38:30,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:38:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:38:30,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:38:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:38:30,788 INFO L87 Difference]: Start difference. First operand has 1321 states, 785 states have (on average 1.3235668789808916) internal successors, (1039), 815 states have internal predecessors, (1039), 464 states have call successors, (464), 71 states have call predecessors, (464), 70 states have return successors, (458), 451 states have call predecessors, (458), 458 states have call successors, (458) Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:38:32,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:38:34,905 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 19:38:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:38:41,665 INFO L93 Difference]: Finished difference Result 5220 states and 7775 transitions. [2023-12-02 19:38:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:38:41,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 240 [2023-12-02 19:38:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:38:41,716 INFO L225 Difference]: With dead ends: 5220 [2023-12-02 19:38:41,716 INFO L226 Difference]: Without dead ends: 3882 [2023-12-02 19:38:41,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:38:41,737 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 4880 mSDsluCounter, 2511 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 904 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4880 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:38:41,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4880 Valid, 4248 Invalid, 2513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [904 Valid, 1607 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2023-12-02 19:38:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2023-12-02 19:38:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3870. [2023-12-02 19:38:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2316 states have (on average 1.3121761658031088) internal successors, (3039), 2376 states have internal predecessors, (3039), 1350 states have call successors, (1350), 204 states have call predecessors, (1350), 203 states have return successors, (1349), 1330 states have call predecessors, (1349), 1349 states have call successors, (1349) [2023-12-02 19:38:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5738 transitions. [2023-12-02 19:38:42,157 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5738 transitions. Word has length 240 [2023-12-02 19:38:42,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:38:42,158 INFO L495 AbstractCegarLoop]: Abstraction has 3870 states and 5738 transitions. [2023-12-02 19:38:42,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:38:42,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5738 transitions. [2023-12-02 19:38:42,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-02 19:38:42,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:38:42,179 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:38:42,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:38:42,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:38:42,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:38:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1166173451, now seen corresponding path program 1 times [2023-12-02 19:38:42,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:38:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488087855] [2023-12-02 19:38:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:38:42,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:38:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:38:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-02 19:38:46,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:38:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488087855] [2023-12-02 19:38:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488087855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:38:46,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:38:46,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:38:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463633796] [2023-12-02 19:38:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:38:46,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:38:46,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:38:46,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:38:46,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:38:46,031 INFO L87 Difference]: Start difference. First operand 3870 states and 5738 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:38:48,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:38:50,095 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 19:38:57,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:38:57,598 INFO L93 Difference]: Finished difference Result 15415 states and 22862 transitions. [2023-12-02 19:38:57,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:38:57,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 241 [2023-12-02 19:38:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:38:57,691 INFO L225 Difference]: With dead ends: 15415 [2023-12-02 19:38:57,691 INFO L226 Difference]: Without dead ends: 11564 [2023-12-02 19:38:57,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:38:57,716 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 4818 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 898 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4818 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:38:57,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4818 Valid, 4194 Invalid, 2494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [898 Valid, 1594 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2023-12-02 19:38:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11564 states. [2023-12-02 19:38:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11564 to 11552. [2023-12-02 19:38:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11552 states, 6924 states have (on average 1.31210283073368) internal successors, (9085), 7094 states have internal predecessors, (9085), 4022 states have call successors, (4022), 606 states have call predecessors, (4022), 605 states have return successors, (4021), 3970 states have call predecessors, (4021), 4021 states have call successors, (4021) [2023-12-02 19:38:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11552 states to 11552 states and 17128 transitions. [2023-12-02 19:38:58,633 INFO L78 Accepts]: Start accepts. Automaton has 11552 states and 17128 transitions. Word has length 241 [2023-12-02 19:38:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:38:58,634 INFO L495 AbstractCegarLoop]: Abstraction has 11552 states and 17128 transitions. [2023-12-02 19:38:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:38:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 11552 states and 17128 transitions. [2023-12-02 19:38:58,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-02 19:38:58,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:38:58,656 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:38:58,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:38:58,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:38:58,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:38:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -253122151, now seen corresponding path program 1 times [2023-12-02 19:38:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:38:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872057099] [2023-12-02 19:38:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:38:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-02 19:39:02,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:02,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872057099] [2023-12-02 19:39:02,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872057099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:02,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:02,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:39:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9645106] [2023-12-02 19:39:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:02,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:39:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:39:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:02,319 INFO L87 Difference]: Start difference. First operand 11552 states and 17128 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:39:04,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:39:06,405 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 19:39:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:12,677 INFO L93 Difference]: Finished difference Result 46131 states and 68398 transitions. [2023-12-02 19:39:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:39:12,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 242 [2023-12-02 19:39:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:12,843 INFO L225 Difference]: With dead ends: 46131 [2023-12-02 19:39:12,844 INFO L226 Difference]: Without dead ends: 34598 [2023-12-02 19:39:12,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:12,890 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 4816 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 898 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:12,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 4194 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 1594 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2023-12-02 19:39:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34598 states. [2023-12-02 19:39:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34598 to 34586. [2023-12-02 19:39:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34586 states, 20748 states have (on average 1.3114035087719298) internal successors, (27209), 21236 states have internal predecessors, (27209), 12026 states have call successors, (12026), 1812 states have call predecessors, (12026), 1811 states have return successors, (12025), 11890 states have call predecessors, (12025), 12025 states have call successors, (12025) [2023-12-02 19:39:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34586 states to 34586 states and 51260 transitions. [2023-12-02 19:39:14,971 INFO L78 Accepts]: Start accepts. Automaton has 34586 states and 51260 transitions. Word has length 242 [2023-12-02 19:39:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:14,971 INFO L495 AbstractCegarLoop]: Abstraction has 34586 states and 51260 transitions. [2023-12-02 19:39:14,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:39:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 34586 states and 51260 transitions. [2023-12-02 19:39:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-02 19:39:14,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:14,989 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:39:14,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:14,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1121999533, now seen corresponding path program 1 times [2023-12-02 19:39:14,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:14,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228286639] [2023-12-02 19:39:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:14,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-02 19:39:18,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:18,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228286639] [2023-12-02 19:39:18,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228286639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:18,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:18,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:39:18,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166162224] [2023-12-02 19:39:18,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:18,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:39:18,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:18,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:39:18,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:18,811 INFO L87 Difference]: Start difference. First operand 34586 states and 51260 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:39:20,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:39:22,896 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 19:39:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:32,041 INFO L93 Difference]: Finished difference Result 133447 states and 197494 transitions. [2023-12-02 19:39:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:39:32,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 243 [2023-12-02 19:39:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:32,480 INFO L225 Difference]: With dead ends: 133447 [2023-12-02 19:39:32,480 INFO L226 Difference]: Without dead ends: 98880 [2023-12-02 19:39:32,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:32,596 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 4814 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 898 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4814 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:32,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4814 Valid, 4194 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 1594 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 19:39:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98880 states. [2023-12-02 19:39:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98880 to 98814. [2023-12-02 19:39:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98814 states, 59446 states have (on average 1.312266594892844) internal successors, (78009), 60724 states have internal predecessors, (78009), 34034 states have call successors, (34034), 5334 states have call predecessors, (34034), 5333 states have return successors, (34033), 33714 states have call predecessors, (34033), 34033 states have call successors, (34033) [2023-12-02 19:39:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98814 states to 98814 states and 146076 transitions. [2023-12-02 19:39:38,521 INFO L78 Accepts]: Start accepts. Automaton has 98814 states and 146076 transitions. Word has length 243 [2023-12-02 19:39:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:38,522 INFO L495 AbstractCegarLoop]: Abstraction has 98814 states and 146076 transitions. [2023-12-02 19:39:38,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:39:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 98814 states and 146076 transitions. [2023-12-02 19:39:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-02 19:39:38,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:38,682 INFO L195 NwaCegarLoop]: trace histogram [28, 15, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:38,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:39:38,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:38,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:38,683 INFO L85 PathProgramCache]: Analyzing trace with hash -358003407, now seen corresponding path program 1 times [2023-12-02 19:39:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:38,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127870587] [2023-12-02 19:39:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2023-12-02 19:39:42,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127870587] [2023-12-02 19:39:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127870587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:42,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:42,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:39:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859851491] [2023-12-02 19:39:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:42,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:42,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:42,869 INFO L87 Difference]: Start difference. First operand 98814 states and 146076 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-02 19:39:44,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:39:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:53,377 INFO L93 Difference]: Finished difference Result 273930 states and 403754 transitions. [2023-12-02 19:39:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:53,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 441 [2023-12-02 19:39:53,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:54,260 INFO L225 Difference]: With dead ends: 273930 [2023-12-02 19:39:54,260 INFO L226 Difference]: Without dead ends: 175135 [2023-12-02 19:39:54,500 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 19:39:54,501 INFO L413 NwaCegarLoop]: 2229 mSDtfsCounter, 1520 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:54,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 3840 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 579 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-12-02 19:39:54,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175135 states. [2023-12-02 19:40:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175135 to 174889. [2023-12-02 19:40:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174889 states, 104586 states have (on average 1.3062455778020003) internal successors, (136615), 107302 states have internal predecessors, (136615), 60382 states have call successors, (60382), 10002 states have call predecessors, (60382), 9920 states have return successors, (60381), 59338 states have call predecessors, (60381), 60381 states have call successors, (60381) [2023-12-02 19:40:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174889 states to 174889 states and 257378 transitions. [2023-12-02 19:40:05,730 INFO L78 Accepts]: Start accepts. Automaton has 174889 states and 257378 transitions. Word has length 441 [2023-12-02 19:40:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:05,731 INFO L495 AbstractCegarLoop]: Abstraction has 174889 states and 257378 transitions. [2023-12-02 19:40:05,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-02 19:40:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 174889 states and 257378 transitions. [2023-12-02 19:40:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-12-02 19:40:05,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:05,978 INFO L195 NwaCegarLoop]: trace histogram [29, 18, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:05,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:40:05,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:05,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash 32843904, now seen corresponding path program 1 times [2023-12-02 19:40:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:05,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095651329] [2023-12-02 19:40:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1459 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked. [2023-12-02 19:40:09,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:09,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095651329] [2023-12-02 19:40:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095651329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:09,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:09,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577224582] [2023-12-02 19:40:09,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:09,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:09,289 INFO L87 Difference]: Start difference. First operand 174889 states and 257378 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-02 19:40:11,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:40:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:25,103 INFO L93 Difference]: Finished difference Result 466980 states and 687008 transitions. [2023-12-02 19:40:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:25,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 551 [2023-12-02 19:40:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:26,431 INFO L225 Difference]: With dead ends: 466980 [2023-12-02 19:40:26,432 INFO L226 Difference]: Without dead ends: 292110 [2023-12-02 19:40:26,868 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 19:40:26,869 INFO L413 NwaCegarLoop]: 2325 mSDtfsCounter, 1552 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:26,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 3999 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 527 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-12-02 19:40:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292110 states. [2023-12-02 19:40:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292110 to 292107. [2023-12-02 19:40:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292107 states, 173258 states have (on average 1.299986147825786) internal successors, (225233), 177799 states have internal predecessors, (225233), 102130 states have call successors, (102130), 16800 states have call predecessors, (102130), 16718 states have return successors, (102129), 100448 states have call predecessors, (102129), 102129 states have call successors, (102129) [2023-12-02 19:40:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292107 states to 292107 states and 429492 transitions. [2023-12-02 19:40:44,552 INFO L78 Accepts]: Start accepts. Automaton has 292107 states and 429492 transitions. Word has length 551 [2023-12-02 19:40:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:44,553 INFO L495 AbstractCegarLoop]: Abstraction has 292107 states and 429492 transitions. [2023-12-02 19:40:44,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-02 19:40:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 292107 states and 429492 transitions. [2023-12-02 19:40:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2023-12-02 19:40:44,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:44,882 INFO L195 NwaCegarLoop]: trace histogram [29, 18, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:44,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:40:44,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:40:44,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:44,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1879099023, now seen corresponding path program 1 times [2023-12-02 19:40:44,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:44,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118487041] [2023-12-02 19:40:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:44,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2023-12-02 19:40:49,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:49,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118487041] [2023-12-02 19:40:49,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118487041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:49,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:49,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:49,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537557497] [2023-12-02 19:40:49,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:49,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:49,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:49,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:49,146 INFO L87 Difference]: Start difference. First operand 292107 states and 429492 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-02 19:40:51,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:40:53,236 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 19:41:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:06,895 INFO L93 Difference]: Finished difference Result 585480 states and 861053 transitions. [2023-12-02 19:41:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:41:06,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 597 [2023-12-02 19:41:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:08,172 INFO L225 Difference]: With dead ends: 585480 [2023-12-02 19:41:08,173 INFO L226 Difference]: Without dead ends: 293403 [2023-12-02 19:41:09,059 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 19:41:09,060 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 6 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:09,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3420 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2023-12-02 19:41:09,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293403 states. [2023-12-02 19:41:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293403 to 292269. [2023-12-02 19:41:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292269 states, 173420 states have (on average 1.299705916272633) internal successors, (225395), 177961 states have internal predecessors, (225395), 102130 states have call successors, (102130), 16800 states have call predecessors, (102130), 16718 states have return successors, (102129), 100448 states have call predecessors, (102129), 102129 states have call successors, (102129) [2023-12-02 19:41:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292269 states to 292269 states and 429654 transitions. [2023-12-02 19:41:26,817 INFO L78 Accepts]: Start accepts. Automaton has 292269 states and 429654 transitions. Word has length 597 [2023-12-02 19:41:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:41:26,818 INFO L495 AbstractCegarLoop]: Abstraction has 292269 states and 429654 transitions. [2023-12-02 19:41:26,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (101), 2 states have call predecessors, (101), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-02 19:41:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 292269 states and 429654 transitions. [2023-12-02 19:41:27,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2023-12-02 19:41:27,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:41:27,618 INFO L195 NwaCegarLoop]: trace histogram [29, 18, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:27,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:41:27,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:41:27,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:41:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2006592673, now seen corresponding path program 1 times [2023-12-02 19:41:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:41:27,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100893422] [2023-12-02 19:41:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:41:27,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:41:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:41:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2023-12-02 19:41:31,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:41:31,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100893422] [2023-12-02 19:41:31,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100893422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:41:31,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:41:31,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:41:31,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949569644] [2023-12-02 19:41:31,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:41:31,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:41:31,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:41:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:41:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:41:31,311 INFO L87 Difference]: Start difference. First operand 292269 states and 429654 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (102), 2 states have call predecessors, (102), 1 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-02 19:41:33,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:41:35,381 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 19:41:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:41:48,312 INFO L93 Difference]: Finished difference Result 585156 states and 860243 transitions. [2023-12-02 19:41:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:41:48,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (102), 2 states have call predecessors, (102), 1 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 599 [2023-12-02 19:41:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:41:49,479 INFO L225 Difference]: With dead ends: 585156 [2023-12-02 19:41:49,479 INFO L226 Difference]: Without dead ends: 292917 [2023-12-02 19:41:50,353 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 19:41:50,354 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 106 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:41:50,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 3295 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 435 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2023-12-02 19:41:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292917 states. [2023-12-02 19:42:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292917 to 292269. [2023-12-02 19:42:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292269 states, 173420 states have (on average 1.2987717679621729) internal successors, (225233), 177961 states have internal predecessors, (225233), 102130 states have call successors, (102130), 16800 states have call predecessors, (102130), 16718 states have return successors, (102129), 100448 states have call predecessors, (102129), 102129 states have call successors, (102129) [2023-12-02 19:42:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292269 states to 292269 states and 429492 transitions. [2023-12-02 19:42:07,247 INFO L78 Accepts]: Start accepts. Automaton has 292269 states and 429492 transitions. Word has length 599 [2023-12-02 19:42:07,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:42:07,248 INFO L495 AbstractCegarLoop]: Abstraction has 292269 states and 429492 transitions. [2023-12-02 19:42:07,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 2 states have call successors, (102), 2 states have call predecessors, (102), 1 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-02 19:42:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 292269 states and 429492 transitions. [2023-12-02 19:42:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2023-12-02 19:42:07,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:42:07,555 INFO L195 NwaCegarLoop]: trace histogram [29, 18, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:07,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:42:07,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:42:07,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:42:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1835834983, now seen corresponding path program 1 times [2023-12-02 19:42:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:42:07,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338114232] [2023-12-02 19:42:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:42:07,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms