./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/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_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/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_29c44b1e-0b4a-4da7-9586-507727aa01b0/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 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:23:28,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:23:29,013 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 18:23:29,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:23:29,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:23:29,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:23:29,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:23:29,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:23:29,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:23:29,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:23:29,042 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:23:29,043 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:23:29,043 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:23:29,043 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:23:29,044 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:23:29,044 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:23:29,045 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:23:29,045 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:23:29,046 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:23:29,046 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:23:29,047 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:23:29,047 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:23:29,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:23:29,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:23:29,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:23:29,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:23:29,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:23:29,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:23:29,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:23:29,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:23:29,051 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:23:29,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:23:29,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:23:29,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:23:29,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:23:29,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:23:29,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:23:29,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:23:29,053 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:23:29,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:23:29,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:23:29,053 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:23:29,053 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:23:29,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:23:29,054 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_29c44b1e-0b4a-4da7-9586-507727aa01b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 [2023-12-02 18:23:29,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:23:29,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:23:29,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:23:29,305 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:23:29,305 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:23:29,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2023-12-02 18:23:32,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:23:32,595 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:23:32,596 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2023-12-02 18:23:32,643 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/data/67ae98635/7a8906f5753b4a0ab8582fa4091a8617/FLAG36e0aac48 [2023-12-02 18:23:32,657 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/data/67ae98635/7a8906f5753b4a0ab8582fa4091a8617 [2023-12-02 18:23:32,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:23:32,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:23:32,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:23:32,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:23:32,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:23:32,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:23:32" (1/1) ... [2023-12-02 18:23:32,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4360f36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:32, skipping insertion in model container [2023-12-02 18:23:32,671 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:23:32" (1/1) ... [2023-12-02 18:23:32,967 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:23:36,296 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_29c44b1e-0b4a-4da7-9586-507727aa01b0/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2023-12-02 18:23:36,299 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_29c44b1e-0b4a-4da7-9586-507727aa01b0/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2023-12-02 18:23:36,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:23:36,380 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:23:36,484 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"); [5398] [2023-12-02 18:23:36,485 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)); [5405] [2023-12-02 18:23:36,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5412] [2023-12-02 18:23:36,487 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 *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/dfaa16b/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [5457-5458] [2023-12-02 18:23:36,487 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.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5463-5465] [2023-12-02 18:23:36,488 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 *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/dfaa16b/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [5490-5491] [2023-12-02 18:23:36,489 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.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [5496-5498] [2023-12-02 18:23:36,489 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 *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/dfaa16b/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [5522-5523] [2023-12-02 18:23:36,489 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" (46UL), [paravirt_opptr] "i" (& pv_irq_ops.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5528-5530] [2023-12-02 18:23:36,496 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [5797-5798] [2023-12-02 18:23:36,498 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [5831-5832] [2023-12-02 18:23:36,499 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (103), "i" (12UL)); [5868-5869] [2023-12-02 18:23:36,500 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (115), "i" (12UL)); [5905-5906] [2023-12-02 18:23:36,685 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 *)"drivers/net/ethernet/3com/3c59x.c"), "i" (3233), "i" (12UL)); [11557-11558] [2023-12-02 18:23:36,772 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_29c44b1e-0b4a-4da7-9586-507727aa01b0/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2023-12-02 18:23:36,773 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_29c44b1e-0b4a-4da7-9586-507727aa01b0/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2023-12-02 18:23:36,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:23:37,118 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:23:37,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37 WrapperNode [2023-12-02 18:23:37,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:23:37,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:23:37,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:23:37,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:23:37,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,500 INFO L138 Inliner]: procedures = 548, calls = 4531, calls flagged for inlining = 251, calls inlined = 230, statements flattened = 9977 [2023-12-02 18:23:37,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:23:37,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:23:37,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:23:37,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:23:37,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,718 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:23:37,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:23:37,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:23:37,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:23:37,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (1/1) ... [2023-12-02 18:23:37,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:23:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:23:37,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:23:37,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:23:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_122 [2023-12-02 18:23:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_122 [2023-12-02 18:23:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-12-02 18:23:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-12-02 18:23:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 18:23:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 18:23:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-12-02 18:23:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-12-02 18:23:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-12-02 18:23:37,985 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-12-02 18:23:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2023-12-02 18:23:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2023-12-02 18:23:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 18:23:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 18:23:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_88 [2023-12-02 18:23:37,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_88 [2023-12-02 18:23:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_107 [2023-12-02 18:23:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_107 [2023-12-02 18:23:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 18:23:37,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 18:23:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-12-02 18:23:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-12-02 18:23:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2023-12-02 18:23:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2023-12-02 18:23:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2023-12-02 18:23:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2023-12-02 18:23:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2023-12-02 18:23:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2023-12-02 18:23:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2023-12-02 18:23:37,989 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2023-12-02 18:23:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 18:23:37,989 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 18:23:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-12-02 18:23:37,989 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-12-02 18:23:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2023-12-02 18:23:37,989 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2023-12-02 18:23:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2023-12-02 18:23:37,990 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2023-12-02 18:23:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-12-02 18:23:37,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-12-02 18:23:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-12-02 18:23:37,990 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-12-02 18:23:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2023-12-02 18:23:37,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2023-12-02 18:23:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 18:23:37,991 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 18:23:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2023-12-02 18:23:37,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2023-12-02 18:23:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2023-12-02 18:23:37,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2023-12-02 18:23:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2023-12-02 18:23:37,991 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2023-12-02 18:23:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-12-02 18:23:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-12-02 18:23:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 18:23:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 18:23:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 18:23:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 18:23:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-12-02 18:23:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-12-02 18:23:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-12-02 18:23:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-12-02 18:23:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-12-02 18:23:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-12-02 18:23:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 18:23:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 18:23:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 18:23:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 18:23:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2023-12-02 18:23:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2023-12-02 18:23:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 18:23:37,994 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 18:23:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2023-12-02 18:23:37,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2023-12-02 18:23:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-12-02 18:23:37,994 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-12-02 18:23:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:23:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2023-12-02 18:23:37,994 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2023-12-02 18:23:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2023-12-02 18:23:37,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2023-12-02 18:23:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 18:23:37,995 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 18:23:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_118 [2023-12-02 18:23:37,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_118 [2023-12-02 18:23:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 18:23:37,995 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 18:23:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_114 [2023-12-02 18:23:37,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_114 [2023-12-02 18:23:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 18:23:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2023-12-02 18:23:37,996 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2023-12-02 18:23:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2023-12-02 18:23:37,996 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2023-12-02 18:23:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2023-12-02 18:23:37,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2023-12-02 18:23:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 18:23:37,996 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 18:23:37,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-12-02 18:23:37,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-12-02 18:23:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 18:23:37,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 18:23:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 18:23:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_106 [2023-12-02 18:23:37,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_106 [2023-12-02 18:23:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 18:23:37,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 18:23:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:23:37,997 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2023-12-02 18:23:37,997 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2023-12-02 18:23:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2023-12-02 18:23:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2023-12-02 18:23:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 18:23:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 18:23:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 18:23:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 18:23:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-12-02 18:23:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-12-02 18:23:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 18:23:37,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 18:23:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 18:23:37,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 18:23:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-12-02 18:23:37,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-12-02 18:23:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2023-12-02 18:23:37,999 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2023-12-02 18:23:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_132 [2023-12-02 18:23:37,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_132 [2023-12-02 18:23:37,999 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2023-12-02 18:23:37,999 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2023-12-02 18:23:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-12-02 18:23:38,000 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-12-02 18:23:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2023-12-02 18:23:38,000 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2023-12-02 18:23:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-12-02 18:23:38,000 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-12-02 18:23:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2023-12-02 18:23:38,000 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2023-12-02 18:23:38,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:23:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2023-12-02 18:23:38,001 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2023-12-02 18:23:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2023-12-02 18:23:38,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2023-12-02 18:23:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:23:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 18:23:38,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 18:23:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 18:23:38,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 18:23:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:23:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2023-12-02 18:23:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2023-12-02 18:23:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 18:23:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 18:23:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-12-02 18:23:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-12-02 18:23:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 18:23:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 18:23:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-12-02 18:23:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-12-02 18:23:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-12-02 18:23:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-12-02 18:23:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2023-12-02 18:23:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2023-12-02 18:23:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-12-02 18:23:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-12-02 18:23:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2023-12-02 18:23:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2023-12-02 18:23:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-12-02 18:23:38,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-12-02 18:23:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-12-02 18:23:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-12-02 18:23:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2023-12-02 18:23:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2023-12-02 18:23:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-12-02 18:23:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-12-02 18:23:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2023-12-02 18:23:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2023-12-02 18:23:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 18:23:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 18:23:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-12-02 18:23:38,005 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-12-02 18:23:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2023-12-02 18:23:38,005 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2023-12-02 18:23:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-12-02 18:23:38,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-12-02 18:23:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2023-12-02 18:23:38,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2023-12-02 18:23:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2023-12-02 18:23:38,005 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2023-12-02 18:23:38,005 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-12-02 18:23:38,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-12-02 18:23:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-12-02 18:23:38,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-12-02 18:23:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2023-12-02 18:23:38,006 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2023-12-02 18:23:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2023-12-02 18:23:38,006 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2023-12-02 18:23:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2023-12-02 18:23:38,006 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2023-12-02 18:23:38,006 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2023-12-02 18:23:38,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2023-12-02 18:23:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-12-02 18:23:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-12-02 18:23:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:23:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:23:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2023-12-02 18:23:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2023-12-02 18:23:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 18:23:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 18:23:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 18:23:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 18:23:38,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-12-02 18:23:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-12-02 18:23:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2023-12-02 18:23:38,008 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2023-12-02 18:23:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-12-02 18:23:38,008 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-12-02 18:23:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 18:23:38,008 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 18:23:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2023-12-02 18:23:38,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2023-12-02 18:23:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-12-02 18:23:38,008 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-12-02 18:23:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-12-02 18:23:38,009 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-12-02 18:23:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:23:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_111 [2023-12-02 18:23:38,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_111 [2023-12-02 18:23:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2023-12-02 18:23:38,009 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2023-12-02 18:23:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 18:23:38,009 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 18:23:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:23:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2023-12-02 18:23:38,009 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2023-12-02 18:23:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2023-12-02 18:23:38,010 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2023-12-02 18:23:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:23:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 18:23:38,010 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 18:23:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-12-02 18:23:38,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-12-02 18:23:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure rx_oom_timer [2023-12-02 18:23:38,010 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_oom_timer [2023-12-02 18:23:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2023-12-02 18:23:38,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2023-12-02 18:23:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 18:23:38,011 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 18:23:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 18:23:38,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 18:23:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-12-02 18:23:38,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-12-02 18:23:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-12-02 18:23:38,011 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-12-02 18:23:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2023-12-02 18:23:38,011 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2023-12-02 18:23:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2023-12-02 18:23:38,012 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2023-12-02 18:23:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2023-12-02 18:23:38,012 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2023-12-02 18:23:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-12-02 18:23:38,012 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-12-02 18:23:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2023-12-02 18:23:38,012 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2023-12-02 18:23:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_105 [2023-12-02 18:23:38,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_105 [2023-12-02 18:23:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 18:23:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 18:23:38,013 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 18:23:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 18:23:38,013 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-12-02 18:23:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-12-02 18:23:38,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_133 [2023-12-02 18:23:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_133 [2023-12-02 18:23:38,013 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 18:23:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 18:23:38,013 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2023-12-02 18:23:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2023-12-02 18:23:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_timer [2023-12-02 18:23:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_timer [2023-12-02 18:23:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:23:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-12-02 18:23:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-12-02 18:23:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2023-12-02 18:23:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2023-12-02 18:23:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2023-12-02 18:23:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2023-12-02 18:23:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-12-02 18:23:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-12-02 18:23:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 18:23:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 18:23:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2023-12-02 18:23:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2023-12-02 18:23:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2023-12-02 18:23:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2023-12-02 18:23:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2023-12-02 18:23:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2023-12-02 18:23:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2023-12-02 18:23:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2023-12-02 18:23:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2023-12-02 18:23:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2023-12-02 18:23:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2023-12-02 18:23:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2023-12-02 18:23:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2023-12-02 18:23:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2023-12-02 18:23:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2023-12-02 18:23:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2023-12-02 18:23:38,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 18:23:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 18:23:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-12-02 18:23:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-12-02 18:23:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-12-02 18:23:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-12-02 18:23:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2023-12-02 18:23:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2023-12-02 18:23:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2023-12-02 18:23:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2023-12-02 18:23:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 18:23:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 18:23:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_112 [2023-12-02 18:23:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_112 [2023-12-02 18:23:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_113 [2023-12-02 18:23:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_113 [2023-12-02 18:23:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:23:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 18:23:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 18:23:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-12-02 18:23:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-12-02 18:23:39,001 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:23:39,005 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:23:40,888 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 18:23:46,636 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:23:50,254 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:23:50,254 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 18:23:50,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:23:50 BoogieIcfgContainer [2023-12-02 18:23:50,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:23:50,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:23:50,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:23:50,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:23:50,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:23:32" (1/3) ... [2023-12-02 18:23:50,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9b874a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:23:50, skipping insertion in model container [2023-12-02 18:23:50,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:23:37" (2/3) ... [2023-12-02 18:23:50,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9b874a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:23:50, skipping insertion in model container [2023-12-02 18:23:50,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:23:50" (3/3) ... [2023-12-02 18:23:50,265 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2023-12-02 18:23:50,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:23:50,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:23:50,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:23:50,388 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;@6aad73d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:23:50,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:23:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 2409 states, 1401 states have (on average 1.3019271948608138) internal successors, (1824), 1484 states have internal predecessors, (1824), 851 states have call successors, (851), 156 states have call predecessors, (851), 155 states have return successors, (844), 826 states have call predecessors, (844), 844 states have call successors, (844) [2023-12-02 18:23:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 18:23:50,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:23:50,435 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 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] [2023-12-02 18:23:50,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:23:50,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:23:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash -784266579, now seen corresponding path program 1 times [2023-12-02 18:23:50,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:23:50,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124955926] [2023-12-02 18:23:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:23:50,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:23:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:23:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-02 18:23:57,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:23:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124955926] [2023-12-02 18:23:57,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124955926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:23:57,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:23:57,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:23:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97909044] [2023-12-02 18:23:57,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:23:57,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:23:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:23:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:23:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:23:57,386 INFO L87 Difference]: Start difference. First operand has 2409 states, 1401 states have (on average 1.3019271948608138) internal successors, (1824), 1484 states have internal predecessors, (1824), 851 states have call successors, (851), 156 states have call predecessors, (851), 155 states have return successors, (844), 826 states have call predecessors, (844), 844 states have call successors, (844) Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 18:24:00,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:02,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:04,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:05,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:06,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:13,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:15,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:17,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:24:18,412 INFO L93 Difference]: Finished difference Result 5701 states and 8395 transitions. [2023-12-02 18:24:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:24:18,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 118 [2023-12-02 18:24:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:24:18,461 INFO L225 Difference]: With dead ends: 5701 [2023-12-02 18:24:18,461 INFO L226 Difference]: Without dead ends: 3192 [2023-12-02 18:24:18,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:24:18,490 INFO L413 NwaCegarLoop]: 3129 mSDtfsCounter, 1203 mSDsluCounter, 11790 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 14919 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:24:18,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 14919 Invalid, 2801 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 2791 Invalid, 4 Unknown, 0 Unchecked, 20.4s Time] [2023-12-02 18:24:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2023-12-02 18:24:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3190. [2023-12-02 18:24:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 1868 states have (on average 1.2864025695931478) internal successors, (2403), 1967 states have internal predecessors, (2403), 1089 states have call successors, (1089), 246 states have call predecessors, (1089), 232 states have return successors, (1129), 1046 states have call predecessors, (1129), 1089 states have call successors, (1129) [2023-12-02 18:24:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4621 transitions. [2023-12-02 18:24:18,899 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4621 transitions. Word has length 118 [2023-12-02 18:24:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:24:18,901 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 4621 transitions. [2023-12-02 18:24:18,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 18:24:18,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4621 transitions. [2023-12-02 18:24:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-02 18:24:18,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:24:18,918 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 18:24:18,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:24:18,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:24:18,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:24:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1695722228, now seen corresponding path program 1 times [2023-12-02 18:24:18,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:24:18,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007983411] [2023-12-02 18:24:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:24:18,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:24:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:24:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 18:24:21,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:24:21,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007983411] [2023-12-02 18:24:21,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007983411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:24:21,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:24:21,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:24:21,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235666636] [2023-12-02 18:24:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:24:21,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:24:21,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:24:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:24:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:24:21,018 INFO L87 Difference]: Start difference. First operand 3190 states and 4621 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 18:24:22,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:24,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:26,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:28,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:31,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:32,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:24:35,082 INFO L93 Difference]: Finished difference Result 5524 states and 8060 transitions. [2023-12-02 18:24:35,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:24:35,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 204 [2023-12-02 18:24:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:24:35,104 INFO L225 Difference]: With dead ends: 5524 [2023-12-02 18:24:35,104 INFO L226 Difference]: Without dead ends: 3194 [2023-12-02 18:24:35,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:24:35,116 INFO L413 NwaCegarLoop]: 3037 mSDtfsCounter, 5 mSDsluCounter, 9100 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12137 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:24:35,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12137 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1546 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2023-12-02 18:24:35,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2023-12-02 18:24:35,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 3194. [2023-12-02 18:24:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 1871 states have (on average 1.2859433458043827) internal successors, (2406), 1970 states have internal predecessors, (2406), 1089 states have call successors, (1089), 247 states have call predecessors, (1089), 233 states have return successors, (1129), 1046 states have call predecessors, (1129), 1089 states have call successors, (1129) [2023-12-02 18:24:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4624 transitions. [2023-12-02 18:24:35,291 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4624 transitions. Word has length 204 [2023-12-02 18:24:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:24:35,293 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 4624 transitions. [2023-12-02 18:24:35,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 18:24:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4624 transitions. [2023-12-02 18:24:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-02 18:24:35,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:24:35,302 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 18:24:35,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:24:35,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:24:35,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:24:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1267211532, now seen corresponding path program 1 times [2023-12-02 18:24:35,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:24:35,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882388745] [2023-12-02 18:24:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:24:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:24:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:24:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 18:24:37,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:24:37,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882388745] [2023-12-02 18:24:37,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882388745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:24:37,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:24:37,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:24:37,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940935632] [2023-12-02 18:24:37,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:24:37,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:24:37,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:24:37,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:24:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:24:37,062 INFO L87 Difference]: Start difference. First operand 3194 states and 4624 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 18:24:39,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:41,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:43,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:45,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:47,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:48,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:49,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:24:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:24:51,933 INFO L93 Difference]: Finished difference Result 5532 states and 8062 transitions. [2023-12-02 18:24:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:24:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 201 [2023-12-02 18:24:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:24:51,967 INFO L225 Difference]: With dead ends: 5532 [2023-12-02 18:24:51,967 INFO L226 Difference]: Without dead ends: 3198 [2023-12-02 18:24:51,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:24:51,985 INFO L413 NwaCegarLoop]: 3037 mSDtfsCounter, 5 mSDsluCounter, 9100 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12137 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:24:51,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12137 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1545 Invalid, 4 Unknown, 0 Unchecked, 14.5s Time] [2023-12-02 18:24:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2023-12-02 18:24:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3198. [2023-12-02 18:24:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 1874 states have (on average 1.2854855923159019) internal successors, (2409), 1973 states have internal predecessors, (2409), 1089 states have call successors, (1089), 248 states have call predecessors, (1089), 234 states have return successors, (1129), 1046 states have call predecessors, (1129), 1089 states have call successors, (1129) [2023-12-02 18:24:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4627 transitions. [2023-12-02 18:24:52,314 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4627 transitions. Word has length 201 [2023-12-02 18:24:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:24:52,315 INFO L495 AbstractCegarLoop]: Abstraction has 3198 states and 4627 transitions. [2023-12-02 18:24:52,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 18:24:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4627 transitions. [2023-12-02 18:24:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-02 18:24:52,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:24:52,339 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 18:24:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:24:52,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:24:52,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:24:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1788124619, now seen corresponding path program 1 times [2023-12-02 18:24:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:24:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361973405] [2023-12-02 18:24:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:24:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:24:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:24:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-12-02 18:24:59,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:24:59,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361973405] [2023-12-02 18:24:59,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361973405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:24:59,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:24:59,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 18:24:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937583613] [2023-12-02 18:24:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:24:59,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:24:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:24:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:24:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:24:59,247 INFO L87 Difference]: Start difference. First operand 3198 states and 4627 transitions. Second operand has 11 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) [2023-12-02 18:25:01,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:03,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:06,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:08,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:10,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:11,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:35,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:38,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:25:38,510 INFO L93 Difference]: Finished difference Result 6521 states and 9459 transitions. [2023-12-02 18:25:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 18:25:38,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) Word has length 322 [2023-12-02 18:25:38,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:25:38,546 INFO L225 Difference]: With dead ends: 6521 [2023-12-02 18:25:38,546 INFO L226 Difference]: Without dead ends: 6519 [2023-12-02 18:25:38,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2023-12-02 18:25:38,551 INFO L413 NwaCegarLoop]: 2259 mSDtfsCounter, 8908 mSDsluCounter, 10012 mSDsCounter, 0 mSdLazyCounter, 15537 mSolverCounterSat, 6194 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9814 SdHoareTripleChecker+Valid, 12271 SdHoareTripleChecker+Invalid, 21734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6194 IncrementalHoareTripleChecker+Valid, 15537 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:25:38,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9814 Valid, 12271 Invalid, 21734 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6194 Valid, 15537 Invalid, 3 Unknown, 0 Unchecked, 37.7s Time] [2023-12-02 18:25:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2023-12-02 18:25:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 6462. [2023-12-02 18:25:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6462 states, 3798 states have (on average 1.2777777777777777) internal successors, (4853), 3994 states have internal predecessors, (4853), 2140 states have call successors, (2140), 540 states have call predecessors, (2140), 523 states have return successors, (2371), 2061 states have call predecessors, (2371), 2140 states have call successors, (2371) [2023-12-02 18:25:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6462 states to 6462 states and 9364 transitions. [2023-12-02 18:25:39,009 INFO L78 Accepts]: Start accepts. Automaton has 6462 states and 9364 transitions. Word has length 322 [2023-12-02 18:25:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:25:39,010 INFO L495 AbstractCegarLoop]: Abstraction has 6462 states and 9364 transitions. [2023-12-02 18:25:39,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) [2023-12-02 18:25:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 6462 states and 9364 transitions. [2023-12-02 18:25:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-02 18:25:39,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:25:39,031 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 18:25:39,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:25:39,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:25:39,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:25:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash -411798264, now seen corresponding path program 1 times [2023-12-02 18:25:39,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:25:39,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283451474] [2023-12-02 18:25:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:25:39,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:25:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:25:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-02 18:25:39,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:25:39,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283451474] [2023-12-02 18:25:39,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283451474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:25:39,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:25:39,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:25:39,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649194731] [2023-12-02 18:25:39,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:25:39,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:25:39,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:25:39,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:25:39,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:25:39,614 INFO L87 Difference]: Start difference. First operand 6462 states and 9364 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-02 18:25:41,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:25:42,351 INFO L93 Difference]: Finished difference Result 12669 states and 18325 transitions. [2023-12-02 18:25:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:25:42,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 319 [2023-12-02 18:25:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:25:42,387 INFO L225 Difference]: With dead ends: 12669 [2023-12-02 18:25:42,387 INFO L226 Difference]: Without dead ends: 6438 [2023-12-02 18:25:42,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:25:42,410 INFO L413 NwaCegarLoop]: 3026 mSDtfsCounter, 3403 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3403 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:25:42,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3403 Valid, 3026 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 18:25:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2023-12-02 18:25:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 6438. [2023-12-02 18:25:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 3786 states have (on average 1.2778658214474379) internal successors, (4838), 3982 states have internal predecessors, (4838), 2131 states have call successors, (2131), 537 states have call predecessors, (2131), 520 states have return successors, (2359), 2052 states have call predecessors, (2359), 2131 states have call successors, (2359) [2023-12-02 18:25:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 9328 transitions. [2023-12-02 18:25:43,060 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 9328 transitions. Word has length 319 [2023-12-02 18:25:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:25:43,060 INFO L495 AbstractCegarLoop]: Abstraction has 6438 states and 9328 transitions. [2023-12-02 18:25:43,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-02 18:25:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 9328 transitions. [2023-12-02 18:25:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-02 18:25:43,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:25:43,094 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 18:25:43,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:25:43,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:25:43,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:25:43,095 INFO L85 PathProgramCache]: Analyzing trace with hash 48029048, now seen corresponding path program 1 times [2023-12-02 18:25:43,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:25:43,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949103403] [2023-12-02 18:25:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:25:43,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:25:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:25:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-02 18:25:43,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:25:43,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949103403] [2023-12-02 18:25:43,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949103403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:25:43,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:25:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:25:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526657984] [2023-12-02 18:25:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:25:43,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:25:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:25:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:25:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:25:43,789 INFO L87 Difference]: Start difference. First operand 6438 states and 9328 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 4 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2023-12-02 18:25:46,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:49,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:25:59,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:26:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:26:02,082 INFO L93 Difference]: Finished difference Result 23924 states and 35246 transitions. [2023-12-02 18:26:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:26:02,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 4 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 446 [2023-12-02 18:26:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:26:02,174 INFO L225 Difference]: With dead ends: 23924 [2023-12-02 18:26:02,174 INFO L226 Difference]: Without dead ends: 17502 [2023-12-02 18:26:02,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:26:02,214 INFO L413 NwaCegarLoop]: 5679 mSDtfsCounter, 5738 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 5076 mSolverCounterSat, 89 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5738 SdHoareTripleChecker+Valid, 10685 SdHoareTripleChecker+Invalid, 5167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 5076 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:26:02,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5738 Valid, 10685 Invalid, 5167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 5076 Invalid, 2 Unknown, 0 Unchecked, 16.8s Time] [2023-12-02 18:26:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17502 states. [2023-12-02 18:26:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17502 to 17495. [2023-12-02 18:26:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17495 states, 10263 states have (on average 1.262593783494105) internal successors, (12958), 10829 states have internal predecessors, (12958), 5690 states have call successors, (5690), 1590 states have call predecessors, (5690), 1541 states have return successors, (6780), 5464 states have call predecessors, (6780), 5690 states have call successors, (6780) [2023-12-02 18:26:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17495 states to 17495 states and 25428 transitions. [2023-12-02 18:26:03,544 INFO L78 Accepts]: Start accepts. Automaton has 17495 states and 25428 transitions. Word has length 446 [2023-12-02 18:26:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:26:03,545 INFO L495 AbstractCegarLoop]: Abstraction has 17495 states and 25428 transitions. [2023-12-02 18:26:03,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 4 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2023-12-02 18:26:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 17495 states and 25428 transitions. [2023-12-02 18:26:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-02 18:26:03,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:26:03,580 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 18:26:03,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 18:26:03,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:26:03,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:26:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash 995513495, now seen corresponding path program 1 times [2023-12-02 18:26:03,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:26:03,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529895401] [2023-12-02 18:26:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:26:03,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:26:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:26:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2023-12-02 18:26:04,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:26:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529895401] [2023-12-02 18:26:04,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529895401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:26:04,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:26:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:26:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466084989] [2023-12-02 18:26:04,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:26:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:26:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:26:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:26:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:26:04,169 INFO L87 Difference]: Start difference. First operand 17495 states and 25428 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-02 18:26:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:26:08,237 INFO L93 Difference]: Finished difference Result 27740 states and 40548 transitions. [2023-12-02 18:26:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:26:08,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 378 [2023-12-02 18:26:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:26:08,310 INFO L225 Difference]: With dead ends: 27740 [2023-12-02 18:26:08,310 INFO L226 Difference]: Without dead ends: 17675 [2023-12-02 18:26:08,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:26:08,345 INFO L413 NwaCegarLoop]: 3039 mSDtfsCounter, 51 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 6037 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:26:08,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 6037 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 18:26:08,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17675 states. [2023-12-02 18:26:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17675 to 17595. [2023-12-02 18:26:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17595 states, 10326 states have (on average 1.2633159016075926) internal successors, (13045), 10898 states have internal predecessors, (13045), 5727 states have call successors, (5727), 1590 states have call predecessors, (5727), 1541 states have return successors, (6818), 5498 states have call predecessors, (6818), 5727 states have call successors, (6818) [2023-12-02 18:26:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17595 states to 17595 states and 25590 transitions. [2023-12-02 18:26:09,665 INFO L78 Accepts]: Start accepts. Automaton has 17595 states and 25590 transitions. Word has length 378 [2023-12-02 18:26:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:26:09,666 INFO L495 AbstractCegarLoop]: Abstraction has 17595 states and 25590 transitions. [2023-12-02 18:26:09,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2023-12-02 18:26:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 17595 states and 25590 transitions. [2023-12-02 18:26:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-02 18:26:09,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:26:09,693 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 18:26:09,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 18:26:09,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:26:09,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:26:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1430496495, now seen corresponding path program 1 times [2023-12-02 18:26:09,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:26:09,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108043537] [2023-12-02 18:26:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:26:09,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:26:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:26:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-12-02 18:26:15,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:26:15,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108043537] [2023-12-02 18:26:15,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108043537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:26:15,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:26:15,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 18:26:15,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319663836] [2023-12-02 18:26:15,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:26:15,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:26:15,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:26:15,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:26:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:26:15,461 INFO L87 Difference]: Start difference. First operand 17595 states and 25590 transitions. Second operand has 12 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) [2023-12-02 18:26:18,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:26:20,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:26:23,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:26:26,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:26:27,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:26:52,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:26:57,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:26:59,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:27:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:27:10,371 INFO L93 Difference]: Finished difference Result 31716 states and 46669 transitions. [2023-12-02 18:27:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 18:27:10,372 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) Word has length 387 [2023-12-02 18:27:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:27:10,508 INFO L225 Difference]: With dead ends: 31716 [2023-12-02 18:27:10,508 INFO L226 Difference]: Without dead ends: 31714 [2023-12-02 18:27:10,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2023-12-02 18:27:10,521 INFO L413 NwaCegarLoop]: 1810 mSDtfsCounter, 16250 mSDsluCounter, 8523 mSDsCounter, 0 mSdLazyCounter, 22879 mSolverCounterSat, 12745 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17262 SdHoareTripleChecker+Valid, 10333 SdHoareTripleChecker+Invalid, 35627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12745 IncrementalHoareTripleChecker+Valid, 22879 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:27:10,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17262 Valid, 10333 Invalid, 35627 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12745 Valid, 22879 Invalid, 3 Unknown, 0 Unchecked, 50.7s Time] [2023-12-02 18:27:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31714 states. [2023-12-02 18:27:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31714 to 30855. [2023-12-02 18:27:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30855 states, 18008 states have (on average 1.2618280764104843) internal successors, (22723), 19022 states have internal predecessors, (22723), 10084 states have call successors, (10084), 2784 states have call predecessors, (10084), 2762 states have return successors, (12371), 9767 states have call predecessors, (12371), 10084 states have call successors, (12371) [2023-12-02 18:27:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30855 states to 30855 states and 45178 transitions. [2023-12-02 18:27:13,879 INFO L78 Accepts]: Start accepts. Automaton has 30855 states and 45178 transitions. Word has length 387 [2023-12-02 18:27:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:27:13,880 INFO L495 AbstractCegarLoop]: Abstraction has 30855 states and 45178 transitions. [2023-12-02 18:27:13,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) [2023-12-02 18:27:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 30855 states and 45178 transitions. [2023-12-02 18:27:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-02 18:27:13,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:27:13,927 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 8, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 18:27:13,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 18:27:13,928 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:27:13,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:27:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1286043573, now seen corresponding path program 1 times [2023-12-02 18:27:13,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:27:13,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312682754] [2023-12-02 18:27:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:13,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:27:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:27:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2023-12-02 18:27:14,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:27:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312682754] [2023-12-02 18:27:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312682754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:27:14,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:27:14,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:27:14,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488281659] [2023-12-02 18:27:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:27:14,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:27:14,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:27:14,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:27:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:27:14,678 INFO L87 Difference]: Start difference. First operand 30855 states and 45178 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-02 18:27:16,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:27:18,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:27:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:27:22,363 INFO L93 Difference]: Finished difference Result 52439 states and 77358 transitions. [2023-12-02 18:27:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:27:22,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 435 [2023-12-02 18:27:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:27:22,491 INFO L225 Difference]: With dead ends: 52439 [2023-12-02 18:27:22,491 INFO L226 Difference]: Without dead ends: 30707 [2023-12-02 18:27:22,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:27:22,576 INFO L413 NwaCegarLoop]: 3024 mSDtfsCounter, 8 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6042 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:27:22,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6042 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 773 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-12-02 18:27:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30707 states. [2023-12-02 18:27:25,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30707 to 30663. [2023-12-02 18:27:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30663 states, 17870 states have (on average 1.2595970900951314) internal successors, (22509), 18876 states have internal predecessors, (22509), 10030 states have call successors, (10030), 2778 states have call predecessors, (10030), 2762 states have return successors, (12317), 9727 states have call predecessors, (12317), 10030 states have call successors, (12317) [2023-12-02 18:27:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30663 states to 30663 states and 44856 transitions. [2023-12-02 18:27:25,482 INFO L78 Accepts]: Start accepts. Automaton has 30663 states and 44856 transitions. Word has length 435 [2023-12-02 18:27:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:27:25,483 INFO L495 AbstractCegarLoop]: Abstraction has 30663 states and 44856 transitions. [2023-12-02 18:27:25,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-02 18:27:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 30663 states and 44856 transitions. [2023-12-02 18:27:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-02 18:27:25,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:27:25,568 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2023-12-02 18:27:25,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 18:27:25,568 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:27:25,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:27:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1458847847, now seen corresponding path program 1 times [2023-12-02 18:27:25,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:27:25,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116277356] [2023-12-02 18:27:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:27:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:27:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1814 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2023-12-02 18:27:26,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:27:26,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116277356] [2023-12-02 18:27:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116277356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:27:26,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:27:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:27:26,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346212652] [2023-12-02 18:27:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:27:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:27:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:27:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:27:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:27:26,610 INFO L87 Difference]: Start difference. First operand 30663 states and 44856 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (91), 2 states have call predecessors, (91), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-02 18:27:29,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:27:31,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:27:33,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:27:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:27:38,074 INFO L93 Difference]: Finished difference Result 48863 states and 72217 transitions. [2023-12-02 18:27:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:27:38,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (91), 2 states have call predecessors, (91), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 731 [2023-12-02 18:27:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:27:38,214 INFO L225 Difference]: With dead ends: 48863 [2023-12-02 18:27:38,214 INFO L226 Difference]: Without dead ends: 32324 [2023-12-02 18:27:38,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:27:38,287 INFO L413 NwaCegarLoop]: 3212 mSDtfsCounter, 290 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:27:38,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 6285 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 794 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 18:27:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32324 states. [2023-12-02 18:27:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32324 to 30667. [2023-12-02 18:27:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30667 states, 17874 states have (on average 1.259538995188542) internal successors, (22513), 18880 states have internal predecessors, (22513), 10030 states have call successors, (10030), 2778 states have call predecessors, (10030), 2762 states have return successors, (12317), 9727 states have call predecessors, (12317), 10030 states have call successors, (12317) [2023-12-02 18:27:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30667 states to 30667 states and 44860 transitions. [2023-12-02 18:27:41,103 INFO L78 Accepts]: Start accepts. Automaton has 30667 states and 44860 transitions. Word has length 731 [2023-12-02 18:27:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:27:41,104 INFO L495 AbstractCegarLoop]: Abstraction has 30667 states and 44860 transitions. [2023-12-02 18:27:41,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (91), 2 states have call predecessors, (91), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2023-12-02 18:27:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 30667 states and 44860 transitions. [2023-12-02 18:27:41,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-12-02 18:27:41,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:27:41,184 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 16, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-12-02 18:27:41,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 18:27:41,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:27:41,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:27:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1474477581, now seen corresponding path program 1 times [2023-12-02 18:27:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:27:41,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473203413] [2023-12-02 18:27:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:41,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:27:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:27:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2023-12-02 18:27:42,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:27:42,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473203413] [2023-12-02 18:27:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473203413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:27:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817089920] [2023-12-02 18:27:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:42,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:27:42,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:27:42,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:27:42,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:27:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:27:45,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 10095 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:27:45,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:27:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2023-12-02 18:27:45,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:27:45,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817089920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:27:45,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:27:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-02 18:27:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594832147] [2023-12-02 18:27:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:27:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:27:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:27:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:27:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:27:45,221 INFO L87 Difference]: Start difference. First operand 30667 states and 44860 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-02 18:27:47,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:27:49,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:27:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:27:53,775 INFO L93 Difference]: Finished difference Result 43086 states and 63735 transitions. [2023-12-02 18:27:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:27:53,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) Word has length 785 [2023-12-02 18:27:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:27:53,917 INFO L225 Difference]: With dead ends: 43086 [2023-12-02 18:27:53,917 INFO L226 Difference]: Without dead ends: 30751 [2023-12-02 18:27:53,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:27:53,982 INFO L413 NwaCegarLoop]: 3024 mSDtfsCounter, 3 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6044 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:27:53,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6044 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 773 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-12-02 18:27:54,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30751 states. [2023-12-02 18:27:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30751 to 30679. [2023-12-02 18:27:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30679 states, 17886 states have (on average 1.2593648663759365) internal successors, (22525), 18892 states have internal predecessors, (22525), 10030 states have call successors, (10030), 2778 states have call predecessors, (10030), 2762 states have return successors, (12317), 9727 states have call predecessors, (12317), 10030 states have call successors, (12317) [2023-12-02 18:27:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30679 states to 30679 states and 44872 transitions. [2023-12-02 18:27:57,293 INFO L78 Accepts]: Start accepts. Automaton has 30679 states and 44872 transitions. Word has length 785 [2023-12-02 18:27:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:27:57,294 INFO L495 AbstractCegarLoop]: Abstraction has 30679 states and 44872 transitions. [2023-12-02 18:27:57,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 2 states have call successors, (93), 2 states have call predecessors, (93), 2 states have return successors, (91), 2 states have call predecessors, (91), 2 states have call successors, (91) [2023-12-02 18:27:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 30679 states and 44872 transitions. [2023-12-02 18:27:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1377 [2023-12-02 18:27:57,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:27:57,378 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 36, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 10, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:27:57,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:27:57,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:27:57,579 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:27:57,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:27:57,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1774011985, now seen corresponding path program 1 times [2023-12-02 18:27:57,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:27:57,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445607399] [2023-12-02 18:27:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:57,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:27:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:27:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8145 trivial. 0 not checked. [2023-12-02 18:27:59,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:27:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445607399] [2023-12-02 18:27:59,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445607399] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:27:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548882408] [2023-12-02 18:27:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:27:59,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:27:59,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:27:59,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:27:59,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:28:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:28:01,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 12321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:28:01,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:28:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8146 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 7830 trivial. 0 not checked. [2023-12-02 18:28:01,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:28:01,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548882408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:28:01,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:28:01,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-02 18:28:01,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043831476] [2023-12-02 18:28:01,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:28:01,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:28:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:28:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:28:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:28:01,868 INFO L87 Difference]: Start difference. First operand 30679 states and 44872 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 3 states have call successors, (150), 2 states have call predecessors, (150), 2 states have return successors, (147), 3 states have call predecessors, (147), 3 states have call successors, (147) [2023-12-02 18:28:05,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:07,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:08,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:11,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:28:16,703 INFO L93 Difference]: Finished difference Result 39952 states and 58785 transitions. [2023-12-02 18:28:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:28:16,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 3 states have call successors, (150), 2 states have call predecessors, (150), 2 states have return successors, (147), 3 states have call predecessors, (147), 3 states have call successors, (147) Word has length 1376 [2023-12-02 18:28:16,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:28:16,888 INFO L225 Difference]: With dead ends: 39952 [2023-12-02 18:28:16,888 INFO L226 Difference]: Without dead ends: 31156 [2023-12-02 18:28:16,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1379 GetRequests, 1375 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:28:16,953 INFO L413 NwaCegarLoop]: 3335 mSDtfsCounter, 210 mSDsluCounter, 6339 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 9674 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:28:16,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 9674 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1361 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2023-12-02 18:28:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31156 states. [2023-12-02 18:28:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31156 to 30681. [2023-12-02 18:28:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30681 states, 17888 states have (on average 1.2593358676207513) internal successors, (22527), 18894 states have internal predecessors, (22527), 10030 states have call successors, (10030), 2778 states have call predecessors, (10030), 2762 states have return successors, (12317), 9727 states have call predecessors, (12317), 10030 states have call successors, (12317) [2023-12-02 18:28:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30681 states to 30681 states and 44874 transitions. [2023-12-02 18:28:20,447 INFO L78 Accepts]: Start accepts. Automaton has 30681 states and 44874 transitions. Word has length 1376 [2023-12-02 18:28:20,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:28:20,448 INFO L495 AbstractCegarLoop]: Abstraction has 30681 states and 44874 transitions. [2023-12-02 18:28:20,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 3 states have call successors, (150), 2 states have call predecessors, (150), 2 states have return successors, (147), 3 states have call predecessors, (147), 3 states have call successors, (147) [2023-12-02 18:28:20,449 INFO L276 IsEmpty]: Start isEmpty. Operand 30681 states and 44874 transitions. [2023-12-02 18:28:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1985 [2023-12-02 18:28:20,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:28:20,589 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 56, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:28:20,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:28:20,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 18:28:20,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:28:20,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:28:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1826561600, now seen corresponding path program 1 times [2023-12-02 18:28:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:28:20,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013647663] [2023-12-02 18:28:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:28:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:28:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:28:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18985 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18984 trivial. 0 not checked. [2023-12-02 18:28:23,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:28:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013647663] [2023-12-02 18:28:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013647663] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:28:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704467495] [2023-12-02 18:28:23,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:28:23,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:28:23,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:28:23,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:28:23,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:28:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:28:27,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 15401 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:28:27,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:28:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18985 backedges. 1511 proven. 0 refuted. 0 times theorem prover too weak. 17474 trivial. 0 not checked. [2023-12-02 18:28:27,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:28:27,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704467495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:28:27,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:28:27,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-12-02 18:28:27,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399108363] [2023-12-02 18:28:27,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:28:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:28:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:28:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:28:27,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:28:27,513 INFO L87 Difference]: Start difference. First operand 30681 states and 44874 transitions. Second operand has 6 states, 6 states have (on average 63.0) internal successors, (378), 5 states have internal predecessors, (378), 3 states have call successors, (174), 2 states have call predecessors, (174), 3 states have return successors, (171), 4 states have call predecessors, (171), 3 states have call successors, (171) [2023-12-02 18:28:30,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:32,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:34,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:36,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:37,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:39,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:41,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:28:47,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:28:47,972 INFO L93 Difference]: Finished difference Result 61434 states and 89859 transitions. [2023-12-02 18:28:47,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:28:47,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.0) internal successors, (378), 5 states have internal predecessors, (378), 3 states have call successors, (174), 2 states have call predecessors, (174), 3 states have return successors, (171), 4 states have call predecessors, (171), 3 states have call successors, (171) Word has length 1984 [2023-12-02 18:28:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:28:48,171 INFO L225 Difference]: With dead ends: 61434 [2023-12-02 18:28:48,172 INFO L226 Difference]: Without dead ends: 30769 [2023-12-02 18:28:48,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 1981 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:28:48,321 INFO L413 NwaCegarLoop]: 3026 mSDtfsCounter, 315 mSDsluCounter, 11730 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 14756 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:28:48,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 14756 Invalid, 1866 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1857 Invalid, 5 Unknown, 0 Unchecked, 17.0s Time] [2023-12-02 18:28:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30769 states. [2023-12-02 18:28:51,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30769 to 30719. [2023-12-02 18:28:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30719 states, 17914 states have (on average 1.258512894942503) internal successors, (22545), 18918 states have internal predecessors, (22545), 10040 states have call successors, (10040), 2778 states have call predecessors, (10040), 2764 states have return successors, (12336), 9741 states have call predecessors, (12336), 10040 states have call successors, (12336) [2023-12-02 18:28:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30719 states to 30719 states and 44921 transitions. [2023-12-02 18:28:51,637 INFO L78 Accepts]: Start accepts. Automaton has 30719 states and 44921 transitions. Word has length 1984 [2023-12-02 18:28:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:28:51,637 INFO L495 AbstractCegarLoop]: Abstraction has 30719 states and 44921 transitions. [2023-12-02 18:28:51,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.0) internal successors, (378), 5 states have internal predecessors, (378), 3 states have call successors, (174), 2 states have call predecessors, (174), 3 states have return successors, (171), 4 states have call predecessors, (171), 3 states have call successors, (171) [2023-12-02 18:28:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand 30719 states and 44921 transitions. [2023-12-02 18:28:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1944 [2023-12-02 18:28:51,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:28:51,729 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 58, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:28:51,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:28:51,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 18:28:51,930 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:28:51,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:28:51,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1297181382, now seen corresponding path program 1 times [2023-12-02 18:28:51,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:28:51,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510521681] [2023-12-02 18:28:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:28:51,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:28:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:28:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 19807 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19806 trivial. 0 not checked. [2023-12-02 18:28:54,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:28:54,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510521681] [2023-12-02 18:28:54,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510521681] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:28:54,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211996193] [2023-12-02 18:28:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:28:54,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:28:54,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:28:54,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:28:54,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c44b1e-0b4a-4da7-9586-507727aa01b0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:28:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:28:57,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 14585 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:28:57,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:28:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 19807 backedges. 6102 proven. 1 refuted. 0 times theorem prover too weak. 13704 trivial. 0 not checked. [2023-12-02 18:28:57,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:28:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 19807 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19806 trivial. 0 not checked. [2023-12-02 18:28:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211996193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:28:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585996132] [2023-12-02 18:28:59,640 INFO L159 IcfgInterpreter]: Started Sifa with 564 locations of interest [2023-12-02 18:28:59,640 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:28:59,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:28:59,651 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:28:59,652 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:36:59,943 WARN L293 SmtUtils]: Spent 28.75s on a formula simplification that was a NOOP. DAG size: 6200 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)