./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire --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 c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:21,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:21,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:12:21,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:21,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:21,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:21,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:21,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:21,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:21,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:21,613 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:21,615 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:21,615 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:21,617 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:12:21,618 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:21,619 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:21,619 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:12:21,620 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:12:21,620 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:21,621 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:12:21,621 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:12:21,622 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:12:21,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:21,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:21,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:12:21,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:21,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:21,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:21,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:21,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:21,629 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:21,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:21,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:21,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:21,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:21,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:21,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:21,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:21,632 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:12:21,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:12:21,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:21,633 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:21,634 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:21,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:21,635 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_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2023-11-23 21:12:21,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:22,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:22,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:22,016 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:22,017 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:22,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2023-11-23 21:12:25,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:26,190 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:26,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2023-11-23 21:12:26,245 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/data/b8b4525cb/60d46e7f4a724d8e916f56d9e1cec0bb/FLAG76caed6ef [2023-11-23 21:12:26,263 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/data/b8b4525cb/60d46e7f4a724d8e916f56d9e1cec0bb [2023-11-23 21:12:26,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:26,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:26,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:26,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:26,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:26,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:26" (1/1) ... [2023-11-23 21:12:26,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673cdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:26, skipping insertion in model container [2023-11-23 21:12:26,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:26" (1/1) ... [2023-11-23 21:12:26,477 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:29,603 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_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2023-11-23 21:12:29,608 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_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2023-11-23 21:12:29,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:29,657 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:29,837 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"); [5755] [2023-11-23 21:12:29,839 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)); [5762] [2023-11-23 21:12:29,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5769] [2023-11-23 21:12:29,841 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/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/de2fed6/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [5799-5800] [2023-11-23 21:12:29,842 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"); [5805-5807] [2023-11-23 21:12:29,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5876] [2023-11-23 21:12:29,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5884] [2023-11-23 21:12:30,138 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_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2023-11-23 21:12:30,139 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_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2023-11-23 21:12:30,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:30,339 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:30,347 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:30,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30 WrapperNode [2023-11-23 21:12:30,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:30,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:30,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:30,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:30,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:30,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:30,741 INFO L138 Inliner]: procedures = 388, calls = 2186, calls flagged for inlining = 154, calls inlined = 135, statements flattened = 4881 [2023-11-23 21:12:30,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:30,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:30,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:30,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:30,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:30,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:30,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:30,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:30,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:31,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:31,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:31,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:31,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:31,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:31,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:31,151 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:31,152 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (1/1) ... [2023-11-23 21:12:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:31,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:31,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2f16b78-9a8d-42cf-8e9e-0fcf759acc57/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2023-11-23 21:12:31,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2023-11-23 21:12:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:12:31,242 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:12:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2023-11-23 21:12:31,242 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2023-11-23 21:12:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2023-11-23 21:12:31,242 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2023-11-23 21:12:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:12:31,243 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:12:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:12:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:12:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:12:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:12:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2023-11-23 21:12:31,245 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2023-11-23 21:12:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure via_remove_one [2023-11-23 21:12:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure via_remove_one [2023-11-23 21:12:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2023-11-23 21:12:31,248 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2023-11-23 21:12:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2023-11-23 21:12:31,249 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2023-11-23 21:12:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:12:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:12:31,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:12:31,250 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2023-11-23 21:12:31,250 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2023-11-23 21:12:31,250 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2023-11-23 21:12:31,250 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2023-11-23 21:12:31,250 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-23 21:12:31,250 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-23 21:12:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:12:31,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:12:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:12:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2023-11-23 21:12:31,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2023-11-23 21:12:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2023-11-23 21:12:31,252 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2023-11-23 21:12:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-23 21:12:31,252 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-23 21:12:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2023-11-23 21:12:31,252 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2023-11-23 21:12:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:12:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:12:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2023-11-23 21:12:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2023-11-23 21:12:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2023-11-23 21:12:31,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2023-11-23 21:12:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:12:31,254 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2023-11-23 21:12:31,254 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2023-11-23 21:12:31,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_via_ircc_cb [2023-11-23 21:12:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_via_ircc_cb [2023-11-23 21:12:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2023-11-23 21:12:31,256 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2023-11-23 21:12:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:12:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:12:31,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:12:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2023-11-23 21:12:31,257 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2023-11-23 21:12:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:12:31,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:12:31,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:12:31,259 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2023-11-23 21:12:31,259 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2023-11-23 21:12:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:12:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:12:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 21:12:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 21:12:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:12:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:12:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2023-11-23 21:12:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2023-11-23 21:12:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2023-11-23 21:12:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2023-11-23 21:12:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2023-11-23 21:12:31,262 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2023-11-23 21:12:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2023-11-23 21:12:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2023-11-23 21:12:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:12:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:12:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:12:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2023-11-23 21:12:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2023-11-23 21:12:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:12:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:12:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:12:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:12:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:12:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:12:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:12:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:12:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:12:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2023-11-23 21:12:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2023-11-23 21:12:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-23 21:12:31,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-23 21:12:31,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-23 21:12:31,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-23 21:12:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:12:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:12:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:12:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:12:31,267 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2023-11-23 21:12:31,267 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2023-11-23 21:12:31,268 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2023-11-23 21:12:31,268 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2023-11-23 21:12:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 21:12:31,269 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 21:12:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:12:31,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:12:31,269 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2023-11-23 21:12:31,269 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2023-11-23 21:12:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2023-11-23 21:12:31,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2023-11-23 21:12:31,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:12:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:12:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:12:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:12:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2023-11-23 21:12:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2023-11-23 21:12:31,271 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2023-11-23 21:12:31,271 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2023-11-23 21:12:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2023-11-23 21:12:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2023-11-23 21:12:31,272 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2023-11-23 21:12:31,272 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2023-11-23 21:12:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:12:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:12:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2023-11-23 21:12:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2023-11-23 21:12:31,273 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2023-11-23 21:12:31,273 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2023-11-23 21:12:31,274 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:12:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:12:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:12:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:12:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2023-11-23 21:12:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2023-11-23 21:12:31,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:12:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:12:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:12:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-23 21:12:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-23 21:12:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2023-11-23 21:12:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2023-11-23 21:12:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:12:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:12:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 21:12:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 21:12:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:12:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:12:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:12:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:12:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:12:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:12:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2023-11-23 21:12:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2023-11-23 21:12:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-23 21:12:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-23 21:12:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-11-23 21:12:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-11-23 21:12:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:12:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:12:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:12:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:12:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-23 21:12:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-23 21:12:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:12:31,280 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-23 21:12:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-23 21:12:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2023-11-23 21:12:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2023-11-23 21:12:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2023-11-23 21:12:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2023-11-23 21:12:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:12:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:12:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2023-11-23 21:12:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2023-11-23 21:12:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2023-11-23 21:12:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2023-11-23 21:12:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2023-11-23 21:12:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2023-11-23 21:12:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:12:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:12:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2023-11-23 21:12:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2023-11-23 21:12:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2023-11-23 21:12:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2023-11-23 21:12:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2023-11-23 21:12:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2023-11-23 21:12:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-23 21:12:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-23 21:12:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:12:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2023-11-23 21:12:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2023-11-23 21:12:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:12:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:12:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2023-11-23 21:12:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2023-11-23 21:12:31,936 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:31,946 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:32,223 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:12:36,709 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:12:37,763 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:40,052 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:40,052 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:12:40,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:40 BoogieIcfgContainer [2023-11-23 21:12:40,055 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:40,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:40,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:40,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:40,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:26" (1/3) ... [2023-11-23 21:12:40,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193fb46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:40, skipping insertion in model container [2023-11-23 21:12:40,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:30" (2/3) ... [2023-11-23 21:12:40,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193fb46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:40, skipping insertion in model container [2023-11-23 21:12:40,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:40" (3/3) ... [2023-11-23 21:12:40,065 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2023-11-23 21:12:40,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:40,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:12:40,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:40,203 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;@65cf3c8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:40,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:12:40,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 1739 states, 934 states have (on average 1.2494646680942185) internal successors, (1167), 957 states have internal predecessors, (1167), 712 states have call successors, (712), 93 states have call predecessors, (712), 92 states have return successors, (708), 697 states have call predecessors, (708), 708 states have call successors, (708) [2023-11-23 21:12:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 21:12:40,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:40,275 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:40,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:40,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash -91918994, now seen corresponding path program 1 times [2023-11-23 21:12:40,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:40,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824330072] [2023-11-23 21:12:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:40,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 21:12:41,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:41,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824330072] [2023-11-23 21:12:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824330072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:41,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:41,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601604440] [2023-11-23 21:12:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:41,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:41,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:41,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:41,558 INFO L87 Difference]: Start difference. First operand has 1739 states, 934 states have (on average 1.2494646680942185) internal successors, (1167), 957 states have internal predecessors, (1167), 712 states have call successors, (712), 93 states have call predecessors, (712), 92 states have return successors, (708), 697 states have call predecessors, (708), 708 states have call successors, (708) Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 21:12:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:44,419 INFO L93 Difference]: Finished difference Result 4821 states and 7207 transitions. [2023-11-23 21:12:44,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:44,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2023-11-23 21:12:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:44,491 INFO L225 Difference]: With dead ends: 4821 [2023-11-23 21:12:44,492 INFO L226 Difference]: Without dead ends: 3028 [2023-11-23 21:12:44,524 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 [2023-11-23 21:12:44,529 INFO L413 NwaCegarLoop]: 2455 mSDtfsCounter, 2041 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 4786 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:44,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 4786 Invalid, 483 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 21:12:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2023-11-23 21:12:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3024. [2023-11-23 21:12:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 1626 states have (on average 1.2416974169741697) internal successors, (2019), 1670 states have internal predecessors, (2019), 1230 states have call successors, (1230), 168 states have call predecessors, (1230), 167 states have return successors, (1247), 1205 states have call predecessors, (1247), 1230 states have call successors, (1247) [2023-11-23 21:12:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 4496 transitions. [2023-11-23 21:12:45,156 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 4496 transitions. Word has length 134 [2023-11-23 21:12:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:45,159 INFO L495 AbstractCegarLoop]: Abstraction has 3024 states and 4496 transitions. [2023-11-23 21:12:45,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 21:12:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 4496 transitions. [2023-11-23 21:12:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-23 21:12:45,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:45,198 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:45,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:12:45,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:45,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1114446955, now seen corresponding path program 1 times [2023-11-23 21:12:45,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:45,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618669029] [2023-11-23 21:12:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:45,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-11-23 21:12:45,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:45,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618669029] [2023-11-23 21:12:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618669029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:45,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:45,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:45,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562011396] [2023-11-23 21:12:45,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:45,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:45,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:45,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:45,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:45,917 INFO L87 Difference]: Start difference. First operand 3024 states and 4496 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 21:12:49,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:12:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:51,060 INFO L93 Difference]: Finished difference Result 8021 states and 11932 transitions. [2023-11-23 21:12:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:51,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 191 [2023-11-23 21:12:51,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:51,115 INFO L225 Difference]: With dead ends: 8021 [2023-11-23 21:12:51,115 INFO L226 Difference]: Without dead ends: 5008 [2023-11-23 21:12:51,141 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 [2023-11-23 21:12:51,143 INFO L413 NwaCegarLoop]: 2405 mSDtfsCounter, 1732 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 4668 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:51,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 4668 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 511 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-11-23 21:12:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5008 states. [2023-11-23 21:12:51,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5008 to 5004. [2023-11-23 21:12:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 2676 states have (on average 1.2376681614349776) internal successors, (3312), 2740 states have internal predecessors, (3312), 2045 states have call successors, (2045), 283 states have call predecessors, (2045), 282 states have return successors, (2062), 2012 states have call predecessors, (2062), 2045 states have call successors, (2062) [2023-11-23 21:12:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 7419 transitions. [2023-11-23 21:12:51,632 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 7419 transitions. Word has length 191 [2023-11-23 21:12:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:51,633 INFO L495 AbstractCegarLoop]: Abstraction has 5004 states and 7419 transitions. [2023-11-23 21:12:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 21:12:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 7419 transitions. [2023-11-23 21:12:51,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-23 21:12:51,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:51,657 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:51,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:12:51,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:51,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash 951584548, now seen corresponding path program 1 times [2023-11-23 21:12:51,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:51,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77366748] [2023-11-23 21:12:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 21:12:52,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77366748] [2023-11-23 21:12:52,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77366748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:52,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:52,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:52,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377477154] [2023-11-23 21:12:52,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:52,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:52,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:52,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:52,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:52,177 INFO L87 Difference]: Start difference. First operand 5004 states and 7419 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:12:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:56,438 INFO L93 Difference]: Finished difference Result 11981 states and 17777 transitions. [2023-11-23 21:12:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 239 [2023-11-23 21:12:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:56,506 INFO L225 Difference]: With dead ends: 11981 [2023-11-23 21:12:56,506 INFO L226 Difference]: Without dead ends: 6988 [2023-11-23 21:12:56,541 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 [2023-11-23 21:12:56,542 INFO L413 NwaCegarLoop]: 3874 mSDtfsCounter, 1739 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 6121 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:56,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 6121 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 21:12:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6988 states. [2023-11-23 21:12:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6988 to 6984. [2023-11-23 21:12:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6984 states, 3725 states have (on average 1.2359731543624162) internal successors, (4604), 3809 states have internal predecessors, (4604), 2860 states have call successors, (2860), 399 states have call predecessors, (2860), 398 states have return successors, (2877), 2819 states have call predecessors, (2877), 2860 states have call successors, (2877) [2023-11-23 21:12:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 10341 transitions. [2023-11-23 21:12:57,258 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 10341 transitions. Word has length 239 [2023-11-23 21:12:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:57,261 INFO L495 AbstractCegarLoop]: Abstraction has 6984 states and 10341 transitions. [2023-11-23 21:12:57,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 21:12:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 10341 transitions. [2023-11-23 21:12:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-11-23 21:12:57,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:57,297 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-11-23 21:12:57,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:12:57,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:12:57,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1476093834, now seen corresponding path program 1 times [2023-11-23 21:12:57,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71911769] [2023-11-23 21:12:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2023-11-23 21:12:58,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:58,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71911769] [2023-11-23 21:12:58,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71911769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:58,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:58,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:58,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920480340] [2023-11-23 21:12:58,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:58,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:58,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:58,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:58,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:58,246 INFO L87 Difference]: Start difference. First operand 6984 states and 10341 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-11-23 21:13:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:01,395 INFO L93 Difference]: Finished difference Result 16153 states and 23912 transitions. [2023-11-23 21:13:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:01,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 301 [2023-11-23 21:13:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:01,479 INFO L225 Difference]: With dead ends: 16153 [2023-11-23 21:13:01,479 INFO L226 Difference]: Without dead ends: 9180 [2023-11-23 21:13:01,523 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 [2023-11-23 21:13:01,524 INFO L413 NwaCegarLoop]: 3963 mSDtfsCounter, 2253 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 5880 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:01,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2253 Valid, 5880 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 21:13:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9180 states. [2023-11-23 21:13:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9180 to 9176. [2023-11-23 21:13:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9176 states, 4894 states have (on average 1.2351859419697588) internal successors, (6045), 5003 states have internal predecessors, (6045), 3748 states have call successors, (3748), 535 states have call predecessors, (3748), 533 states have return successors, (3765), 3695 states have call predecessors, (3765), 3748 states have call successors, (3765) [2023-11-23 21:13:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 13558 transitions. [2023-11-23 21:13:02,466 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 13558 transitions. Word has length 301 [2023-11-23 21:13:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:02,468 INFO L495 AbstractCegarLoop]: Abstraction has 9176 states and 13558 transitions. [2023-11-23 21:13:02,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-11-23 21:13:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 13558 transitions. [2023-11-23 21:13:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-11-23 21:13:02,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:02,509 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 8, 7, 7, 7, 7, 7, 7, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:02,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:13:02,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:02,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2027169285, now seen corresponding path program 1 times [2023-11-23 21:13:02,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:02,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478312588] [2023-11-23 21:13:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:02,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2023-11-23 21:13:03,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478312588] [2023-11-23 21:13:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478312588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:03,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:03,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:03,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286582988] [2023-11-23 21:13:03,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:03,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:03,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:03,427 INFO L87 Difference]: Start difference. First operand 9176 states and 13558 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-11-23 21:13:06,178 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 []