./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje --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 f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:24:52,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:24:52,846 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 07:24:52,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:24:52,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:24:52,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:24:52,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:24:52,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:24:52,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:24:52,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:24:52,897 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:24:52,898 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:24:52,898 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:24:52,898 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:24:52,899 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:24:52,899 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:24:52,900 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:24:52,900 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:24:52,901 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:24:52,901 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:24:52,902 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:24:52,902 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:24:52,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:24:52,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:24:52,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:24:52,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:24:52,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:24:52,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:24:52,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:24:52,905 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:24:52,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:24:52,908 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:24:52,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:24:52,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:24:52,912 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:24:52,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:24:52,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:24:52,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:24:52,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:24:52,914 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:24:52,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:24:52,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:24:52,915 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:24:52,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:24:52,915 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_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51fd7a7e803b337407ebecb084bc416ae9c8b7a3d33ff72a0e0702d21471e83 [2024-11-09 07:24:53,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:24:53,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:24:53,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:24:53,239 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:24:53,240 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:24:53,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i Unable to find full path for "g++" [2024-11-09 07:24:55,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:24:55,780 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:24:55,781 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2024-11-09 07:24:55,824 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/data/6dc20b79f/172826ce78104eeeafba1e7674008526/FLAGe6a20f749 [2024-11-09 07:24:55,837 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/data/6dc20b79f/172826ce78104eeeafba1e7674008526 [2024-11-09 07:24:55,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:24:55,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:24:55,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:24:55,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:24:55,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:24:55,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:24:55" (1/1) ... [2024-11-09 07:24:55,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4f9863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:55, skipping insertion in model container [2024-11-09 07:24:55,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:24:55" (1/1) ... [2024-11-09 07:24:56,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:24:57,589 WARN L250 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_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2024-11-09 07:24:57,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:24:57,652 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:24:57,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4501] [2024-11-09 07:24:57,782 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [4508] [2024-11-09 07:24:57,783 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; bts %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4515-4516] [2024-11-09 07:24:57,784 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".section .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.previous\n671:\n\tlock; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4523-4524] [2024-11-09 07:24:57,786 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 *)"/anthill/stuff/tacas-comp/inst/current/envs/linux-3.0.1/linux-3.0.1/arch/x86/include/asm/paravirt.h"), "i" (853), "i" (12UL)); [4560-4561] [2024-11-09 07:24:57,786 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.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [4566-4568] [2024-11-09 07:24:57,789 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [4616] [2024-11-09 07:24:57,789 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %1,%0": "=r" (ret): "m" (*((unsigned short volatile *)addr)): "memory"); [4623] [2024-11-09 07:24:57,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [4630] [2024-11-09 07:24:57,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [4637] [2024-11-09 07:24:57,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [4644] [2024-11-09 07:24:57,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [4651] [2024-11-09 07:24:57,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [4692] [2024-11-09 07:24:57,793 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [4699] [2024-11-09 07:24:57,793 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [4706] [2024-11-09 07:24:57,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [4713] [2024-11-09 07:24:57,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [4720] [2024-11-09 07:24:58,019 WARN L250 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_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-net-wan-farsync.ko.cil.out.i[221005,221018] [2024-11-09 07:24:58,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:24:58,279 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:24:58,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58 WrapperNode [2024-11-09 07:24:58,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:24:58,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:24:58,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:24:58,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:24:58,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,525 INFO L138 Inliner]: procedures = 200, calls = 1603, calls flagged for inlining = 99, calls inlined = 85, statements flattened = 3701 [2024-11-09 07:24:58,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:24:58,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:24:58,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:24:58,527 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:24:58,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,718 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:24:58,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:24:58,789 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:24:58,789 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:24:58,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (1/1) ... [2024-11-09 07:24:58,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:24:58,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:58,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:24:58,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:24:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 07:24:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 07:24:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2024-11-09 07:24:58,872 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2024-11-09 07:24:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-11-09 07:24:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-11-09 07:24:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2024-11-09 07:24:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2024-11-09 07:24:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 07:24:58,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 07:24:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-09 07:24:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-09 07:24:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2024-11-09 07:24:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2024-11-09 07:24:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2024-11-09 07:24:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2024-11-09 07:24:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2024-11-09 07:24:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2024-11-09 07:24:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2024-11-09 07:24:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2024-11-09 07:24:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2024-11-09 07:24:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2024-11-09 07:24:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-09 07:24:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-09 07:24:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2024-11-09 07:24:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2024-11-09 07:24:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-09 07:24:58,880 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-09 07:24:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:24:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:24:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2024-11-09 07:24:58,880 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2024-11-09 07:24:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2024-11-09 07:24:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2024-11-09 07:24:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 07:24:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 07:24:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2024-11-09 07:24:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2024-11-09 07:24:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:24:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2024-11-09 07:24:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2024-11-09 07:24:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:24:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2024-11-09 07:24:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2024-11-09 07:24:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 07:24:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 07:24:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2024-11-09 07:24:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2024-11-09 07:24:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-09 07:24:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-09 07:24:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-09 07:24:58,883 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-09 07:24:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2024-11-09 07:24:58,883 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2024-11-09 07:24:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-09 07:24:58,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-09 07:24:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2024-11-09 07:24:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2024-11-09 07:24:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2024-11-09 07:24:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2024-11-09 07:24:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-09 07:24:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2024-11-09 07:24:58,886 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2024-11-09 07:24:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2024-11-09 07:24:58,886 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2024-11-09 07:24:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2024-11-09 07:24:58,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2024-11-09 07:24:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 07:24:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 07:24:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2024-11-09 07:24:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2024-11-09 07:24:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2024-11-09 07:24:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2024-11-09 07:24:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-09 07:24:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-09 07:24:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2024-11-09 07:24:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2024-11-09 07:24:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-09 07:24:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-09 07:24:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 07:24:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2024-11-09 07:24:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2024-11-09 07:24:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2024-11-09 07:24:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2024-11-09 07:24:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2024-11-09 07:24:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2024-11-09 07:24:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:24:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2024-11-09 07:24:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2024-11-09 07:24:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:24:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2024-11-09 07:24:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2024-11-09 07:24:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:24:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2024-11-09 07:24:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2024-11-09 07:24:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2024-11-09 07:24:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2024-11-09 07:24:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2024-11-09 07:24:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2024-11-09 07:24:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2024-11-09 07:24:58,893 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2024-11-09 07:24:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2024-11-09 07:24:58,893 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2024-11-09 07:24:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2024-11-09 07:24:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2024-11-09 07:24:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2024-11-09 07:24:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2024-11-09 07:24:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2024-11-09 07:24:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2024-11-09 07:24:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2024-11-09 07:24:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2024-11-09 07:24:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2024-11-09 07:24:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2024-11-09 07:24:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2024-11-09 07:24:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2024-11-09 07:24:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2024-11-09 07:24:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2024-11-09 07:24:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:24:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2024-11-09 07:24:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2024-11-09 07:24:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2024-11-09 07:24:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2024-11-09 07:24:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2024-11-09 07:24:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2024-11-09 07:24:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2024-11-09 07:24:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2024-11-09 07:24:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:24:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:24:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-09 07:24:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-09 07:24:59,491 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:24:59,495 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:25:00,435 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 07:25:00,447 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 07:25:00,458 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 07:25:00,460 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 07:25:00,464 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 07:25:00,465 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 07:25:00,472 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 07:25:08,948 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##268: assume !false; [2024-11-09 07:25:08,948 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##267: assume false; [2024-11-09 07:25:08,948 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##282: assume !false; [2024-11-09 07:25:08,949 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##281: assume false; [2024-11-09 07:25:08,950 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##313: assume !false; [2024-11-09 07:25:08,950 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##312: assume false; [2024-11-09 07:25:08,950 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##319: assume !false; [2024-11-09 07:25:08,954 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##318: assume false; [2024-11-09 07:25:08,955 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##463: assume !false; [2024-11-09 07:25:08,955 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##462: assume false; [2024-11-09 07:25:08,955 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2024-11-09 07:25:08,955 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2024-11-09 07:25:08,955 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2024-11-09 07:25:08,956 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false;call ULTIMATE.dealloc(fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset);havoc fst_ioctl_~#wrthdr~0#1.base, fst_ioctl_~#wrthdr~0#1.offset;call ULTIMATE.dealloc(fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset);havoc fst_ioctl_~#info~0#1.base, fst_ioctl_~#info~0#1.offset; [2024-11-09 07:25:09,470 INFO L? ?]: Removed 1230 outVars from TransFormulas that were not future-live. [2024-11-09 07:25:09,470 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:25:10,695 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:25:10,696 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:25:10,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:25:10 BoogieIcfgContainer [2024-11-09 07:25:10,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:25:10,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:25:10,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:25:10,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:25:10,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:24:55" (1/3) ... [2024-11-09 07:25:10,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f4726f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:25:10, skipping insertion in model container [2024-11-09 07:25:10,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:24:58" (2/3) ... [2024-11-09 07:25:10,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f4726f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:25:10, skipping insertion in model container [2024-11-09 07:25:10,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:25:10" (3/3) ... [2024-11-09 07:25:10,709 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-wan-farsync.ko.cil.out.i [2024-11-09 07:25:10,731 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:25:10,731 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:25:10,851 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:25:10,858 INFO L333 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, 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;@164a62eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:25:10,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:25:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 535 states have (on average 1.2934579439252336) internal successors, (692), 542 states have internal predecessors, (692), 284 states have call successors, (284), 57 states have call predecessors, (284), 57 states have return successors, (284), 284 states have call predecessors, (284), 284 states have call successors, (284) [2024-11-09 07:25:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 07:25:10,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:10,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:10,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:10,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1964973830, now seen corresponding path program 1 times [2024-11-09 07:25:10,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:10,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249806019] [2024-11-09 07:25:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:10,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:14,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:14,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249806019] [2024-11-09 07:25:14,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249806019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:14,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:25:14,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:25:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785091919] [2024-11-09 07:25:14,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:14,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:25:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:25:14,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:25:14,924 INFO L87 Difference]: Start difference. First operand has 878 states, 535 states have (on average 1.2934579439252336) internal successors, (692), 542 states have internal predecessors, (692), 284 states have call successors, (284), 57 states have call predecessors, (284), 57 states have return successors, (284), 284 states have call predecessors, (284), 284 states have call successors, (284) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:25:17,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:25:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:19,466 INFO L93 Difference]: Finished difference Result 1754 states and 2521 transitions. [2024-11-09 07:25:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:25:19,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-11-09 07:25:19,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:19,494 INFO L225 Difference]: With dead ends: 1754 [2024-11-09 07:25:19,495 INFO L226 Difference]: Without dead ends: 876 [2024-11-09 07:25:19,502 INFO L431 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 [2024-11-09 07:25:19,506 INFO L432 NwaCegarLoop]: 1113 mSDtfsCounter, 0 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:19,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2225 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 287 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 07:25:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-09 07:25:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2024-11-09 07:25:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 535 states have (on average 1.2897196261682242) internal successors, (690), 540 states have internal predecessors, (690), 284 states have call successors, (284), 57 states have call predecessors, (284), 56 states have return successors, (282), 282 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-09 07:25:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1256 transitions. [2024-11-09 07:25:19,770 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1256 transitions. Word has length 15 [2024-11-09 07:25:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:19,775 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1256 transitions. [2024-11-09 07:25:19,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:25:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1256 transitions. [2024-11-09 07:25:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:25:19,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:19,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:19,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:25:19,779 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:19,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:19,780 INFO L85 PathProgramCache]: Analyzing trace with hash -331240556, now seen corresponding path program 1 times [2024-11-09 07:25:19,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:19,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124345281] [2024-11-09 07:25:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:19,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:23,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:23,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124345281] [2024-11-09 07:25:23,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124345281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:25:23,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062516751] [2024-11-09 07:25:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:23,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:23,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:23,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:25:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:26,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:25:26,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:25:26,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:25:26,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062516751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:25:26,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:25:26,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 07:25:26,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925360152] [2024-11-09 07:25:26,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:25:26,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:25:26,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:25:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:25:26,423 INFO L87 Difference]: Start difference. First operand 876 states and 1256 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:25:28,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:25:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:31,701 INFO L93 Difference]: Finished difference Result 2544 states and 3641 transitions. [2024-11-09 07:25:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:25:31,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-11-09 07:25:31,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:31,718 INFO L225 Difference]: With dead ends: 2544 [2024-11-09 07:25:31,719 INFO L226 Difference]: Without dead ends: 1671 [2024-11-09 07:25:31,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:25:31,725 INFO L432 NwaCegarLoop]: 1354 mSDtfsCounter, 1135 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:31,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 2454 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-11-09 07:25:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2024-11-09 07:25:31,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1667. [2024-11-09 07:25:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1017 states have (on average 1.288102261553589) internal successors, (1310), 1026 states have internal predecessors, (1310), 537 states have call successors, (537), 113 states have call predecessors, (537), 112 states have return successors, (535), 534 states have call predecessors, (535), 535 states have call successors, (535) [2024-11-09 07:25:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2382 transitions. [2024-11-09 07:25:31,872 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2382 transitions. Word has length 16 [2024-11-09 07:25:31,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:31,873 INFO L471 AbstractCegarLoop]: Abstraction has 1667 states and 2382 transitions. [2024-11-09 07:25:31,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 07:25:31,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2382 transitions. [2024-11-09 07:25:31,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 07:25:31,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:31,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:31,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:25:32,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:32,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:32,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1091492658, now seen corresponding path program 1 times [2024-11-09 07:25:32,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:32,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104416356] [2024-11-09 07:25:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:32,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:34,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:34,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104416356] [2024-11-09 07:25:34,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104416356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:25:34,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477381754] [2024-11-09 07:25:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:34,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:34,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:34,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:34,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:25:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:37,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:25:37,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:37,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:25:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477381754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:25:37,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1810703252] [2024-11-09 07:25:37,787 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-09 07:25:37,787 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:25:37,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:25:37,797 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:25:37,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:25:46,332 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 18 for LOIs [2024-11-09 07:25:46,346 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 7 for LOIs [2024-11-09 07:25:46,355 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 59 for LOIs [2024-11-09 07:25:46,417 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 55 for LOIs [2024-11-09 07:25:46,431 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 13 for LOIs [2024-11-09 07:25:46,440 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:25:47,185 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_#valid_243| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_18| Int)) (= |c_#valid| (store |v_#valid_243| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_18| 0))) is different from true [2024-11-09 07:25:47,339 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_16| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_16| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_16|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_16| 0)))) (exists ((|v_#valid_243| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_18| Int)) (= |c_#valid| (store |v_#valid_243| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_18| 0)))) is different from true [2024-11-09 07:25:51,251 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11096#(and (exists ((|v_ULTIMATE.start_fst_open_~err~1#1_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_fst_open_~err~1#1_BEFORE_CALL_1| 0)) (<= |v_ULTIMATE.start_fst_open_~err~1#1_BEFORE_CALL_1| 2147483647) (<= 0 (+ |v_ULTIMATE.start_fst_open_~err~1#1_BEFORE_CALL_1| 2147483648)))) (<= ~ldv_module_refcounter~0 1) (not (= (mod (+ |~#__this_module~0.offset| |~#__this_module~0.base|) 18446744073709551616) 0)) (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_16| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_16| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_16|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_16| 0)))) (exists ((|v_#valid_243| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_18| Int)) (= (store |v_#valid_243| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_18| 0) |#valid|)) (exists ((|v_ULTIMATE.start_main_~var_group1~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~var_group1~0#1.base_BEFORE_CALL_3| Int)) (not (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~var_group1~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~var_group1~0#1.offset_BEFORE_CALL_3| 2668))) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~var_group1~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~var_group1~0#1.offset_BEFORE_CALL_3| 2668)) 28)) 4))))' at error location [2024-11-09 07:25:51,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:25:51,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:25:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-09 07:25:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964085895] [2024-11-09 07:25:51,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:25:51,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:25:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:51,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:25:51,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=535, Unknown=2, NotChecked=94, Total=702 [2024-11-09 07:25:51,254 INFO L87 Difference]: Start difference. First operand 1667 states and 2382 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 07:25:53,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:25:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:57,409 INFO L93 Difference]: Finished difference Result 3334 states and 4766 transitions. [2024-11-09 07:25:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:25:57,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 30 [2024-11-09 07:25:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:57,423 INFO L225 Difference]: With dead ends: 3334 [2024-11-09 07:25:57,424 INFO L226 Difference]: Without dead ends: 1670 [2024-11-09 07:25:57,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=71, Invalid=535, Unknown=2, NotChecked=94, Total=702 [2024-11-09 07:25:57,433 INFO L432 NwaCegarLoop]: 1111 mSDtfsCounter, 0 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:57,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3331 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 431 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2024-11-09 07:25:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2024-11-09 07:25:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2024-11-09 07:25:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1020 states have (on average 1.2872549019607844) internal successors, (1313), 1029 states have internal predecessors, (1313), 537 states have call successors, (537), 113 states have call predecessors, (537), 112 states have return successors, (535), 534 states have call predecessors, (535), 535 states have call successors, (535) [2024-11-09 07:25:57,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2385 transitions. [2024-11-09 07:25:57,535 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2385 transitions. Word has length 30 [2024-11-09 07:25:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:57,537 INFO L471 AbstractCegarLoop]: Abstraction has 1670 states and 2385 transitions. [2024-11-09 07:25:57,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 07:25:57,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2385 transitions. [2024-11-09 07:25:57,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 07:25:57,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:57,539 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:25:57,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:25:57,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 07:25:57,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:57,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:57,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1673249728, now seen corresponding path program 2 times [2024-11-09 07:25:57,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:57,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125523827] [2024-11-09 07:25:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:57,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:26:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 07:26:00,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:26:00,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125523827] [2024-11-09 07:26:00,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125523827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:26:00,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:26:00,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:26:00,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251628421] [2024-11-09 07:26:00,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:26:00,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:26:00,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:26:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:26:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:26:00,667 INFO L87 Difference]: Start difference. First operand 1670 states and 2385 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:26:02,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:26:04,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:26:07,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:26:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:26:26,651 INFO L93 Difference]: Finished difference Result 2544 states and 3636 transitions. [2024-11-09 07:26:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:26:26,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-09 07:26:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:26:26,673 INFO L225 Difference]: With dead ends: 2544 [2024-11-09 07:26:26,673 INFO L226 Difference]: Without dead ends: 2541 [2024-11-09 07:26:26,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:26:26,678 INFO L432 NwaCegarLoop]: 2293 mSDtfsCounter, 3033 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 564 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 4431 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:26:26,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 4431 Invalid, 2380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [564 Valid, 1813 Invalid, 3 Unknown, 0 Unchecked, 25.7s Time] [2024-11-09 07:26:26,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2024-11-09 07:26:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2532. [2024-11-09 07:26:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 1546 states have (on average 1.2884864165588616) internal successors, (1992), 1559 states have internal predecessors, (1992), 817 states have call successors, (817), 169 states have call predecessors, (817), 168 states have return successors, (817), 814 states have call predecessors, (817), 815 states have call successors, (817) [2024-11-09 07:26:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3626 transitions. [2024-11-09 07:26:26,864 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3626 transitions. Word has length 33 [2024-11-09 07:26:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:26:26,865 INFO L471 AbstractCegarLoop]: Abstraction has 2532 states and 3626 transitions. [2024-11-09 07:26:26,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:26:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3626 transitions. [2024-11-09 07:26:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 07:26:26,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:26:26,875 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:26:26,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:26:26,876 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:26:26,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:26:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1758089902, now seen corresponding path program 1 times [2024-11-09 07:26:26,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:26:26,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175709910] [2024-11-09 07:26:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:26:26,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:26:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:26:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 07:26:29,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:26:29,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175709910] [2024-11-09 07:26:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175709910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:26:29,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:26:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:26:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363400560] [2024-11-09 07:26:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:26:29,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:26:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:26:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:26:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:26:29,714 INFO L87 Difference]: Start difference. First operand 2532 states and 3626 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:26:31,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:26:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:26:37,043 INFO L93 Difference]: Finished difference Result 4204 states and 6018 transitions. [2024-11-09 07:26:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:26:37,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2024-11-09 07:26:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:26:37,068 INFO L225 Difference]: With dead ends: 4204 [2024-11-09 07:26:37,068 INFO L226 Difference]: Without dead ends: 3331 [2024-11-09 07:26:37,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:26:37,074 INFO L432 NwaCegarLoop]: 1323 mSDtfsCounter, 1131 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:26:37,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 3518 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 464 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2024-11-09 07:26:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2024-11-09 07:26:37,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 3327. [2024-11-09 07:26:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 2031 states have (on average 1.2885278188084688) internal successors, (2617), 2047 states have internal predecessors, (2617), 1071 states have call successors, (1071), 225 states have call predecessors, (1071), 224 states have return successors, (1071), 1068 states have call predecessors, (1071), 1069 states have call successors, (1071) [2024-11-09 07:26:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 4759 transitions. [2024-11-09 07:26:37,260 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 4759 transitions. Word has length 39 [2024-11-09 07:26:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:26:37,261 INFO L471 AbstractCegarLoop]: Abstraction has 3327 states and 4759 transitions. [2024-11-09 07:26:37,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:26:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 4759 transitions. [2024-11-09 07:26:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 07:26:37,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:26:37,270 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:26:37,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:26:37,271 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:26:37,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:26:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1191055645, now seen corresponding path program 1 times [2024-11-09 07:26:37,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:26:37,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2635879] [2024-11-09 07:26:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:26:37,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:26:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:26:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:26:39,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:26:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2635879] [2024-11-09 07:26:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2635879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:26:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952025962] [2024-11-09 07:26:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:26:39,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:26:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:26:39,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:26:39,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:26:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:26:42,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 07:26:42,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:26:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:26:43,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:26:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:26:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952025962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:26:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091900593] [2024-11-09 07:26:43,952 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2024-11-09 07:26:43,957 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:26:43,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:26:43,958 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:26:43,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:26:52,753 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 18 for LOIs [2024-11-09 07:26:52,762 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 7 for LOIs [2024-11-09 07:26:52,770 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 59 for LOIs [2024-11-09 07:26:52,827 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 13 for LOIs [2024-11-09 07:26:52,838 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:26:53,555 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_#valid_246| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_19| Int)) (= |c_#valid| (store |v_#valid_246| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_19| 0))) is different from true [2024-11-09 07:26:53,726 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_18| Int)) (and (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_18| 0)) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_18|)) (<= |v_ULTIMATE.start_main_~tmp___1~12#1_18| 2147483647))) (exists ((|v_#valid_246| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_19| Int)) (= |c_#valid| (store |v_#valid_246| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_19| 0)))) is different from true [2024-11-09 07:26:57,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1091900593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:26:57,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:26:57,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [7, 6, 7] total 31 [2024-11-09 07:26:57,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102726804] [2024-11-09 07:26:57,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:26:57,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 07:26:57,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:26:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 07:26:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=696, Unknown=2, NotChecked=110, Total=930 [2024-11-09 07:26:57,818 INFO L87 Difference]: Start difference. First operand 3327 states and 4759 transitions. Second operand has 20 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:26:59,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:02,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:04,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:06,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:08,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:10,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:13,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:15,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:17,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:19,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:21,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:24,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:26,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:28,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:27:30,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:32,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:27:35,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:15,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:17,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:28:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:28:24,523 INFO L93 Difference]: Finished difference Result 5149 states and 7374 transitions. [2024-11-09 07:28:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 07:28:24,524 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 47 [2024-11-09 07:28:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:28:24,549 INFO L225 Difference]: With dead ends: 5149 [2024-11-09 07:28:24,549 INFO L226 Difference]: Without dead ends: 3421 [2024-11-09 07:28:24,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=122, Invalid=696, Unknown=2, NotChecked=110, Total=930 [2024-11-09 07:28:24,559 INFO L432 NwaCegarLoop]: 1118 mSDtfsCounter, 51 mSDsluCounter, 12145 mSDsCounter, 0 mSdLazyCounter, 4881 mSolverCounterSat, 2 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 13263 SdHoareTripleChecker+Invalid, 7737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4881 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 2833 IncrementalHoareTripleChecker+Unchecked, 86.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:28:24,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 13263 Invalid, 7737 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 4881 Invalid, 21 Unknown, 2833 Unchecked, 86.2s Time] [2024-11-09 07:28:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2024-11-09 07:28:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 3352. [2024-11-09 07:28:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3352 states, 2048 states have (on average 1.2890625) internal successors, (2640), 2064 states have internal predecessors, (2640), 1073 states have call successors, (1073), 232 states have call predecessors, (1073), 230 states have return successors, (1073), 1069 states have call predecessors, (1073), 1071 states have call successors, (1073) [2024-11-09 07:28:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3352 states to 3352 states and 4786 transitions. [2024-11-09 07:28:24,754 INFO L78 Accepts]: Start accepts. Automaton has 3352 states and 4786 transitions. Word has length 47 [2024-11-09 07:28:24,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:28:24,754 INFO L471 AbstractCegarLoop]: Abstraction has 3352 states and 4786 transitions. [2024-11-09 07:28:24,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:28:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3352 states and 4786 transitions. [2024-11-09 07:28:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 07:28:24,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:28:24,760 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:28:24,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:28:24,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 07:28:24,961 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:28:24,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:28:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1279706693, now seen corresponding path program 1 times [2024-11-09 07:28:24,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:28:24,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569406730] [2024-11-09 07:28:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:28:24,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:28:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:28:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 07:28:27,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:28:27,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569406730] [2024-11-09 07:28:27,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569406730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:28:27,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:28:27,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:28:27,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111223328] [2024-11-09 07:28:27,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:28:27,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:28:27,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:28:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:28:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:28:27,864 INFO L87 Difference]: Start difference. First operand 3352 states and 4786 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:28:29,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:28:33,077 INFO L93 Difference]: Finished difference Result 8290 states and 12106 transitions. [2024-11-09 07:28:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:28:33,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-09 07:28:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:28:33,114 INFO L225 Difference]: With dead ends: 8290 [2024-11-09 07:28:33,114 INFO L226 Difference]: Without dead ends: 4966 [2024-11-09 07:28:33,128 INFO L431 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 [2024-11-09 07:28:33,129 INFO L432 NwaCegarLoop]: 1282 mSDtfsCounter, 521 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:28:33,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 2349 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 290 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-11-09 07:28:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2024-11-09 07:28:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 4958. [2024-11-09 07:28:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4958 states, 3066 states have (on average 1.3059360730593608) internal successors, (4004), 3083 states have internal predecessors, (4004), 1665 states have call successors, (1665), 228 states have call predecessors, (1665), 226 states have return successors, (1665), 1661 states have call predecessors, (1665), 1663 states have call successors, (1665) [2024-11-09 07:28:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4958 states to 4958 states and 7334 transitions. [2024-11-09 07:28:33,403 INFO L78 Accepts]: Start accepts. Automaton has 4958 states and 7334 transitions. Word has length 48 [2024-11-09 07:28:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:28:33,404 INFO L471 AbstractCegarLoop]: Abstraction has 4958 states and 7334 transitions. [2024-11-09 07:28:33,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:28:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4958 states and 7334 transitions. [2024-11-09 07:28:33,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 07:28:33,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:28:33,410 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-09 07:28:33,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:28:33,411 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:28:33,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:28:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1644574776, now seen corresponding path program 1 times [2024-11-09 07:28:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:28:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274170291] [2024-11-09 07:28:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:28:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:28:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:28:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 07:28:36,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:28:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274170291] [2024-11-09 07:28:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274170291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:28:36,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:28:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:28:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593371218] [2024-11-09 07:28:36,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:28:36,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:28:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:28:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:28:36,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:28:36,252 INFO L87 Difference]: Start difference. First operand 4958 states and 7334 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 07:28:38,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:40,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:42,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:28:47,685 INFO L93 Difference]: Finished difference Result 7801 states and 11575 transitions. [2024-11-09 07:28:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:28:47,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2024-11-09 07:28:47,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:28:47,711 INFO L225 Difference]: With dead ends: 7801 [2024-11-09 07:28:47,712 INFO L226 Difference]: Without dead ends: 3616 [2024-11-09 07:28:47,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:28:47,729 INFO L432 NwaCegarLoop]: 1110 mSDtfsCounter, 0 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:28:47,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3324 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 437 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2024-11-09 07:28:47,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2024-11-09 07:28:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3616. [2024-11-09 07:28:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 2235 states have (on average 1.3033557046979867) internal successors, (2913), 2248 states have internal predecessors, (2913), 1211 states have call successors, (1211), 171 states have call predecessors, (1211), 169 states have return successors, (1211), 1207 states have call predecessors, (1211), 1209 states have call successors, (1211) [2024-11-09 07:28:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 5335 transitions. [2024-11-09 07:28:47,957 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 5335 transitions. Word has length 48 [2024-11-09 07:28:47,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:28:47,958 INFO L471 AbstractCegarLoop]: Abstraction has 3616 states and 5335 transitions. [2024-11-09 07:28:47,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 07:28:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 5335 transitions. [2024-11-09 07:28:47,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 07:28:47,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:28:47,962 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:28:47,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:28:47,962 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:28:47,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:28:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1190071842, now seen corresponding path program 1 times [2024-11-09 07:28:47,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:28:47,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196306557] [2024-11-09 07:28:47,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:28:47,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:28:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:28:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 07:28:50,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:28:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196306557] [2024-11-09 07:28:50,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196306557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:28:50,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:28:50,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:28:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762016952] [2024-11-09 07:28:50,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:28:50,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:28:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:28:50,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:28:50,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:28:50,360 INFO L87 Difference]: Start difference. First operand 3616 states and 5335 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:28:52,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:28:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:28:54,723 INFO L93 Difference]: Finished difference Result 7212 states and 10645 transitions. [2024-11-09 07:28:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:28:54,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2024-11-09 07:28:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:28:54,746 INFO L225 Difference]: With dead ends: 7212 [2024-11-09 07:28:54,746 INFO L226 Difference]: Without dead ends: 3622 [2024-11-09 07:28:54,760 INFO L431 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 [2024-11-09 07:28:54,761 INFO L432 NwaCegarLoop]: 1107 mSDtfsCounter, 437 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:28:54,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1652 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 227 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 07:28:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2024-11-09 07:28:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3614. [2024-11-09 07:28:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 2233 states have (on average 1.2995969547693687) internal successors, (2902), 2246 states have internal predecessors, (2902), 1211 states have call successors, (1211), 171 states have call predecessors, (1211), 169 states have return successors, (1211), 1207 states have call predecessors, (1211), 1209 states have call successors, (1211) [2024-11-09 07:28:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5324 transitions. [2024-11-09 07:28:54,976 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5324 transitions. Word has length 49 [2024-11-09 07:28:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:28:54,977 INFO L471 AbstractCegarLoop]: Abstraction has 3614 states and 5324 transitions. [2024-11-09 07:28:54,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:28:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5324 transitions. [2024-11-09 07:28:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 07:28:55,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:28:55,034 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:28:55,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 07:28:55,034 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:28:55,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:28:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1853019589, now seen corresponding path program 1 times [2024-11-09 07:28:55,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:28:55,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664731509] [2024-11-09 07:28:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:28:55,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:28:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:28:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:28:58,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:28:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664731509] [2024-11-09 07:28:58,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664731509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:28:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474224433] [2024-11-09 07:28:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:28:58,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:28:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:28:58,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:28:58,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:29:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:29:01,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 07:29:01,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:29:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:29:02,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:29:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:29:02,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474224433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:29:02,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1803921] [2024-11-09 07:29:02,909 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2024-11-09 07:29:02,910 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:29:02,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:29:02,910 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:29:02,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:29:11,427 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 18 for LOIs [2024-11-09 07:29:11,448 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 49 for LOIs [2024-11-09 07:29:11,466 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 53 for LOIs [2024-11-09 07:29:11,488 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 7 for LOIs [2024-11-09 07:29:11,500 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 59 for LOIs [2024-11-09 07:29:11,577 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 52 for LOIs [2024-11-09 07:29:11,588 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 13 for LOIs [2024-11-09 07:29:11,597 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:29:12,674 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_fst_init_~#__key~1#1.base_20| Int) (|v_#valid_249| (Array Int Int))) (= |c_#valid| (store |v_#valid_249| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_20| 0))) is different from true [2024-11-09 07:29:12,981 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_20| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_20| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_20|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_20| 0)))) (exists ((|v_ULTIMATE.start_fst_init_~#__key~1#1.base_20| Int) (|v_#valid_249| (Array Int Int))) (= |c_#valid| (store |v_#valid_249| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_20| 0)))) is different from true [2024-11-09 07:29:24,993 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '100751#(and (<= 1 ~ldv_module_refcounter~0) (exists ((|v_ULTIMATE.start_main_~var_group1~0#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_main_~var_group1~0#1.offset_BEFORE_CALL_19| Int)) (not (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~var_group1~0#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_main_~var_group1~0#1.offset_BEFORE_CALL_19| 2668))) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~var_group1~0#1.base_BEFORE_CALL_19|) (+ |v_ULTIMATE.start_main_~var_group1~0#1.offset_BEFORE_CALL_19| 2668)) 28)) 4))) (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_20| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_20| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_20|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_20| 0)))) (not (= ~ldv_module_refcounter~0 1)) (exists ((|v_ULTIMATE.start_fst_init_~#__key~1#1.base_20| Int) (|v_#valid_249| (Array Int Int))) (= |#valid| (store |v_#valid_249| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_20| 0))) (not (= (mod (+ |~#__this_module~0.offset| |~#__this_module~0.base|) 18446744073709551616) 0)))' at error location [2024-11-09 07:29:24,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:29:24,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:29:24,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-11-09 07:29:24,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414514941] [2024-11-09 07:29:24,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:29:24,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:29:24,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:29:24,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:29:24,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1565, Unknown=2, NotChecked=162, Total=1892 [2024-11-09 07:29:24,996 INFO L87 Difference]: Start difference. First operand 3614 states and 5324 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-09 07:29:27,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:29:32,862 INFO L93 Difference]: Finished difference Result 7228 states and 10653 transitions. [2024-11-09 07:29:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:29:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 49 [2024-11-09 07:29:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:29:32,889 INFO L225 Difference]: With dead ends: 7228 [2024-11-09 07:29:32,890 INFO L226 Difference]: Without dead ends: 3620 [2024-11-09 07:29:32,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=163, Invalid=1565, Unknown=2, NotChecked=162, Total=1892 [2024-11-09 07:29:32,906 INFO L432 NwaCegarLoop]: 1109 mSDtfsCounter, 0 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4433 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:29:32,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4433 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 579 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2024-11-09 07:29:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2024-11-09 07:29:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3620. [2024-11-09 07:29:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 2239 states have (on average 1.2987941045109423) internal successors, (2908), 2252 states have internal predecessors, (2908), 1211 states have call successors, (1211), 171 states have call predecessors, (1211), 169 states have return successors, (1211), 1207 states have call predecessors, (1211), 1209 states have call successors, (1211) [2024-11-09 07:29:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5330 transitions. [2024-11-09 07:29:33,127 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5330 transitions. Word has length 49 [2024-11-09 07:29:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:29:33,127 INFO L471 AbstractCegarLoop]: Abstraction has 3620 states and 5330 transitions. [2024-11-09 07:29:33,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-09 07:29:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5330 transitions. [2024-11-09 07:29:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 07:29:33,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:29:33,130 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:29:33,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:29:33,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 07:29:33,332 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:29:33,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:29:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash -293475579, now seen corresponding path program 2 times [2024-11-09 07:29:33,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:29:33,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478774628] [2024-11-09 07:29:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:29:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:29:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:29:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:29:38,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:29:38,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478774628] [2024-11-09 07:29:38,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478774628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:29:38,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718440429] [2024-11-09 07:29:38,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:29:38,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:29:38,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:29:38,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:29:38,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:29:42,439 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 07:29:42,440 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:29:42,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:29:42,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:29:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 07:29:45,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:29:45,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718440429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:29:45,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:29:45,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2024-11-09 07:29:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684016537] [2024-11-09 07:29:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:29:45,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 07:29:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:29:45,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 07:29:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:29:45,113 INFO L87 Difference]: Start difference. First operand 3620 states and 5330 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:29:47,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:49,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:51,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:53,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:29:55,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:30:45,490 INFO L93 Difference]: Finished difference Result 9248 states and 13700 transitions. [2024-11-09 07:30:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:30:45,491 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 55 [2024-11-09 07:30:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:30:45,547 INFO L225 Difference]: With dead ends: 9248 [2024-11-09 07:30:45,547 INFO L226 Difference]: Without dead ends: 7818 [2024-11-09 07:30:45,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2024-11-09 07:30:45,560 INFO L432 NwaCegarLoop]: 901 mSDtfsCounter, 2795 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 4842 mSolverCounterSat, 1446 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 6293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 4842 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:30:45,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3290 Valid, 3889 Invalid, 6293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1446 Valid, 4842 Invalid, 5 Unknown, 0 Unchecked, 58.9s Time] [2024-11-09 07:30:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2024-11-09 07:30:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7801. [2024-11-09 07:30:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7801 states, 4823 states have (on average 1.3023014721127928) internal successors, (6281), 4856 states have internal predecessors, (6281), 2633 states have call successors, (2633), 344 states have call predecessors, (2633), 344 states have return successors, (2639), 2625 states have call predecessors, (2639), 2631 states have call successors, (2639) [2024-11-09 07:30:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 11553 transitions. [2024-11-09 07:30:46,301 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 11553 transitions. Word has length 55 [2024-11-09 07:30:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:30:46,302 INFO L471 AbstractCegarLoop]: Abstraction has 7801 states and 11553 transitions. [2024-11-09 07:30:46,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 07:30:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 11553 transitions. [2024-11-09 07:30:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 07:30:46,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:30:46,305 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:30:46,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:30:46,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 07:30:46,506 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:30:46,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:30:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash 489862876, now seen corresponding path program 1 times [2024-11-09 07:30:46,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:30:46,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399631083] [2024-11-09 07:30:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:30:46,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:30:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:30:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 07:30:49,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:30:49,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399631083] [2024-11-09 07:30:49,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399631083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:30:49,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:30:49,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:30:49,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312760719] [2024-11-09 07:30:49,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:30:49,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:30:49,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:30:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:30:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:30:49,276 INFO L87 Difference]: Start difference. First operand 7801 states and 11553 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 07:30:51,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:53,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:30:55,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:31:00,566 INFO L93 Difference]: Finished difference Result 7835 states and 11594 transitions. [2024-11-09 07:31:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:31:00,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2024-11-09 07:31:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:31:00,612 INFO L225 Difference]: With dead ends: 7835 [2024-11-09 07:31:00,612 INFO L226 Difference]: Without dead ends: 7813 [2024-11-09 07:31:00,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:31:00,619 INFO L432 NwaCegarLoop]: 1111 mSDtfsCounter, 0 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:31:00,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3324 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 438 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time] [2024-11-09 07:31:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2024-11-09 07:31:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7813. [2024-11-09 07:31:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7813 states, 4831 states have (on average 1.3018008693852205) internal successors, (6289), 4864 states have internal predecessors, (6289), 2637 states have call successors, (2637), 344 states have call predecessors, (2637), 344 states have return successors, (2643), 2629 states have call predecessors, (2643), 2635 states have call successors, (2643) [2024-11-09 07:31:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7813 states to 7813 states and 11569 transitions. [2024-11-09 07:31:01,186 INFO L78 Accepts]: Start accepts. Automaton has 7813 states and 11569 transitions. Word has length 57 [2024-11-09 07:31:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:31:01,187 INFO L471 AbstractCegarLoop]: Abstraction has 7813 states and 11569 transitions. [2024-11-09 07:31:01,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 07:31:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7813 states and 11569 transitions. [2024-11-09 07:31:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 07:31:01,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:31:01,191 INFO L215 NwaCegarLoop]: trace histogram [10, 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] [2024-11-09 07:31:01,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 07:31:01,191 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:31:01,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:31:01,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1083266298, now seen corresponding path program 1 times [2024-11-09 07:31:01,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:31:01,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625587282] [2024-11-09 07:31:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:31:01,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:31:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:31:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:31:05,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:31:05,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625587282] [2024-11-09 07:31:05,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625587282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:31:05,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964137394] [2024-11-09 07:31:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:31:05,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:31:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:31:05,586 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:31:05,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:31:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:31:09,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:31:09,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:31:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:31:09,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:31:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:31:12,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964137394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:31:12,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1564923817] [2024-11-09 07:31:12,927 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2024-11-09 07:31:12,927 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:31:12,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:31:12,928 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:31:12,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:31:21,666 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 28 for LOIs [2024-11-09 07:31:21,684 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 7 for LOIs [2024-11-09 07:31:21,696 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 81 for LOIs [2024-11-09 07:31:21,767 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 13 for LOIs [2024-11-09 07:31:21,776 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:31:22,655 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((|v_#valid_252| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_21| Int)) (= |c_#valid| (store |v_#valid_252| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_21| 0))))) (or .cse0 (and (not (= |c_ULTIMATE.start_main_~ldv_s_fst_ops_net_device_ops~0#1| 1)) (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_23| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_23| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_23|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_23| 0)))) .cse0))) is different from true [2024-11-09 07:31:23,058 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_23| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_23| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_23|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_23| 0))))) (.cse1 (exists ((|v_#valid_252| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_21| Int)) (= |c_#valid| (store |v_#valid_252| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_21| 0))))) (or (and .cse0 .cse1) (and (not (= |c_ULTIMATE.start_main_~ldv_s_fst_ops_net_device_ops~0#1| 1)) .cse0 .cse1 (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_25| Int)) (and (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_25| 0)) (<= |v_ULTIMATE.start_main_~tmp___1~12#1_25| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_25|))))))) is different from true [2024-11-09 07:31:23,758 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_23| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_23| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_23|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_23| 0)))) (exists ((|v_#valid_252| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_21| Int)) (= |c_#valid| (store |v_#valid_252| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_21| 0)))) is different from true [2024-11-09 07:31:24,208 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_23| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_23| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_23|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_23| 0))))) (.cse1 (exists ((|v_#valid_252| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_21| Int)) (= |c_#valid| (store |v_#valid_252| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_21| 0))))) (or (and .cse0 .cse1) (and .cse0 .cse1 (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_25| Int)) (and (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_25| 0)) (<= |v_ULTIMATE.start_main_~tmp___1~12#1_25| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_25|))))))) is different from true [2024-11-09 07:31:30,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1564923817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:31:30,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:31:30,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [13, 12, 13] total 46 [2024-11-09 07:31:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046559265] [2024-11-09 07:31:30,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:31:30,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 07:31:30,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:31:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 07:31:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1379, Unknown=8, NotChecked=332, Total=2070 [2024-11-09 07:31:30,127 INFO L87 Difference]: Start difference. First operand 7813 states and 11569 transitions. Second operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:31:32,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:34,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:36,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:38,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:41,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:43,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:45,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:47,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:49,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:31:52,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:54,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:56,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:31:58,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:01,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:32:03,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:32:05,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:32:07,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:32:09,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:32:51,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:32:51,568 INFO L93 Difference]: Finished difference Result 14864 states and 22062 transitions. [2024-11-09 07:32:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 07:32:51,569 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 59 [2024-11-09 07:32:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:32:51,627 INFO L225 Difference]: With dead ends: 14864 [2024-11-09 07:32:51,627 INFO L226 Difference]: Without dead ends: 7897 [2024-11-09 07:32:51,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=351, Invalid=1379, Unknown=8, NotChecked=332, Total=2070 [2024-11-09 07:32:51,660 INFO L432 NwaCegarLoop]: 1085 mSDtfsCounter, 49 mSDsluCounter, 9719 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 3 mSolverCounterUnsat, 45 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 10804 SdHoareTripleChecker+Invalid, 8862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 45 IncrementalHoareTripleChecker+Unknown, 5581 IncrementalHoareTripleChecker+Unchecked, 80.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:32:51,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 10804 Invalid, 8862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 3233 Invalid, 45 Unknown, 5581 Unchecked, 80.8s Time] [2024-11-09 07:32:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2024-11-09 07:32:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7815. [2024-11-09 07:32:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7815 states, 4833 states have (on average 1.3018828884750673) internal successors, (6292), 4866 states have internal predecessors, (6292), 2637 states have call successors, (2637), 344 states have call predecessors, (2637), 344 states have return successors, (2643), 2629 states have call predecessors, (2643), 2635 states have call successors, (2643) [2024-11-09 07:32:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7815 states to 7815 states and 11572 transitions. [2024-11-09 07:32:52,195 INFO L78 Accepts]: Start accepts. Automaton has 7815 states and 11572 transitions. Word has length 59 [2024-11-09 07:32:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:32:52,196 INFO L471 AbstractCegarLoop]: Abstraction has 7815 states and 11572 transitions. [2024-11-09 07:32:52,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:32:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7815 states and 11572 transitions. [2024-11-09 07:32:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 07:32:52,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:32:52,201 INFO L215 NwaCegarLoop]: trace histogram [10, 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] [2024-11-09 07:32:52,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 07:32:52,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 07:32:52,403 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:32:52,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:32:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash -893219376, now seen corresponding path program 1 times [2024-11-09 07:32:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:32:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282048431] [2024-11-09 07:32:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:32:52,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:32:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:32:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 07:32:55,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:32:55,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282048431] [2024-11-09 07:32:55,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282048431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:32:55,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013035999] [2024-11-09 07:32:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:32:55,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:32:55,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:32:55,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:32:55,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:32:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:32:59,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:32:59,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:33:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:33:01,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:33:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:33:04,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013035999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:33:04,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1383879341] [2024-11-09 07:33:04,802 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2024-11-09 07:33:04,803 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:33:04,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:33:04,804 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:33:04,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:33:16,876 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 18 for LOIs [2024-11-09 07:33:16,888 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 217 for LOIs [2024-11-09 07:33:17,054 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_blast_assert with input of size 4 for LOIs [2024-11-09 07:33:17,065 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 7 for LOIs [2024-11-09 07:33:17,075 INFO L197 IcfgInterpreter]: Interpreting procedure netif_wake_queue with input of size 56 for LOIs [2024-11-09 07:33:17,196 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 7 for LOIs [2024-11-09 07:33:17,206 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 13 for LOIs [2024-11-09 07:33:17,215 INFO L197 IcfgInterpreter]: Interpreting procedure netdev_get_tx_queue with input of size 58 for LOIs [2024-11-09 07:33:17,228 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:33:19,907 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_#valid_255| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_22| Int)) (= |c_#valid| (store |v_#valid_255| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_22| 0))) (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_28| Int)) (and (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_28| 0)) (<= |v_ULTIMATE.start_main_~tmp___1~12#1_28| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_28|))))) is different from true [2024-11-09 07:33:43,381 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '196367#(not (= ~ldv_module_refcounter~0 1))' at error location [2024-11-09 07:33:43,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:33:43,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:33:43,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 12, 13] total 26 [2024-11-09 07:33:43,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226799626] [2024-11-09 07:33:43,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:33:43,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 07:33:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:33:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 07:33:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2710, Unknown=1, NotChecked=108, Total=3192 [2024-11-09 07:33:43,385 INFO L87 Difference]: Start difference. First operand 7815 states and 11572 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-09 07:33:45,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:33:47,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:34:23,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:23,521 INFO L93 Difference]: Finished difference Result 15654 states and 23187 transitions. [2024-11-09 07:34:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 07:34:23,522 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 61 [2024-11-09 07:34:23,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:23,577 INFO L225 Difference]: With dead ends: 15654 [2024-11-09 07:34:23,577 INFO L226 Difference]: Without dead ends: 7851 [2024-11-09 07:34:23,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=923, Invalid=5086, Unknown=1, NotChecked=152, Total=6162 [2024-11-09 07:34:23,616 INFO L432 NwaCegarLoop]: 1909 mSDtfsCounter, 976 mSDsluCounter, 13548 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 15457 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:23,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 15457 Invalid, 2265 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2260 Invalid, 2 Unknown, 0 Unchecked, 31.6s Time] [2024-11-09 07:34:23,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7851 states. [2024-11-09 07:34:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7851 to 7827. [2024-11-09 07:34:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7827 states, 4845 states have (on average 1.2992776057791537) internal successors, (6295), 4878 states have internal predecessors, (6295), 2637 states have call successors, (2637), 344 states have call predecessors, (2637), 344 states have return successors, (2643), 2629 states have call predecessors, (2643), 2635 states have call successors, (2643) [2024-11-09 07:34:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7827 states to 7827 states and 11575 transitions. [2024-11-09 07:34:24,272 INFO L78 Accepts]: Start accepts. Automaton has 7827 states and 11575 transitions. Word has length 61 [2024-11-09 07:34:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:24,272 INFO L471 AbstractCegarLoop]: Abstraction has 7827 states and 11575 transitions. [2024-11-09 07:34:24,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-09 07:34:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7827 states and 11575 transitions. [2024-11-09 07:34:24,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 07:34:24,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:24,278 INFO L215 NwaCegarLoop]: trace histogram [22, 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] [2024-11-09 07:34:24,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 07:34:24,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 07:34:24,479 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:34:24,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:24,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1000874719, now seen corresponding path program 1 times [2024-11-09 07:34:24,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:34:24,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736794522] [2024-11-09 07:34:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:24,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:34:33,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:34:33,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736794522] [2024-11-09 07:34:33,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736794522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:33,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980206364] [2024-11-09 07:34:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:33,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:33,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:34:33,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:33,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:34:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:37,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:34:37,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:34:38,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 07:34:46,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980206364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2130264023] [2024-11-09 07:34:46,194 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2024-11-09 07:34:46,194 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:34:46,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:34:46,194 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:34:46,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:34:55,465 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 51 for LOIs [2024-11-09 07:34:55,488 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 7 for LOIs [2024-11-09 07:34:55,500 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 103 for LOIs [2024-11-09 07:34:55,614 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 13 for LOIs [2024-11-09 07:34:55,626 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:34:57,425 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((|v_ULTIMATE.start_fst_init_~#__key~1#1.base_23| Int) (|v_#valid_258| (Array Int Int))) (= |c_#valid| (store |v_#valid_258| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_23| 0))))) (or (and (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_34| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_34| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_34|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_34| 0)))) (exists ((|v_ULTIMATE.start_main_~tmp___0~23#1_55| Int)) (and (not (= 2 |v_ULTIMATE.start_main_~tmp___0~23#1_55|)) (not (= |v_ULTIMATE.start_main_~tmp___0~23#1_55| 1)) (<= |v_ULTIMATE.start_main_~tmp___0~23#1_55| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~tmp___0~23#1_55| 2147483648)) (not (= |v_ULTIMATE.start_main_~tmp___0~23#1_55| 0)) (not (= |v_ULTIMATE.start_main_~tmp___0~23#1_55| 4)) (not (= 3 |v_ULTIMATE.start_main_~tmp___0~23#1_55|)) (not (= 5 |v_ULTIMATE.start_main_~tmp___0~23#1_55|)))) .cse0) .cse0)) is different from true [2024-11-09 07:34:58,147 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_34| Int)) (and (<= |v_ULTIMATE.start_main_~tmp___1~12#1_34| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_34|)) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_34| 0))))) (.cse1 (exists ((|v_ULTIMATE.start_fst_init_~#__key~1#1.base_23| Int) (|v_#valid_258| (Array Int Int))) (= |c_#valid| (store |v_#valid_258| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_23| 0))))) (or (and .cse0 .cse1) (and .cse0 (exists ((|v_ULTIMATE.start_main_~tmp___0~23#1_55| Int)) (and (not (= 2 |v_ULTIMATE.start_main_~tmp___0~23#1_55|)) (not (= |v_ULTIMATE.start_main_~tmp___0~23#1_55| 1)) (<= |v_ULTIMATE.start_main_~tmp___0~23#1_55| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~tmp___0~23#1_55| 2147483648)) (not (= |v_ULTIMATE.start_main_~tmp___0~23#1_55| 0)) (not (= |v_ULTIMATE.start_main_~tmp___0~23#1_55| 4)) (not (= 3 |v_ULTIMATE.start_main_~tmp___0~23#1_55|)) (not (= 5 |v_ULTIMATE.start_main_~tmp___0~23#1_55|)))) (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_36| Int)) (and (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_36| 0)) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_36|)) (<= |v_ULTIMATE.start_main_~tmp___1~12#1_36| 2147483647))) .cse1))) is different from true [2024-11-09 07:35:11,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2130264023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:35:11,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:11,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [25, 24, 25] total 58 [2024-11-09 07:35:11,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289926221] [2024-11-09 07:35:11,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:35:11,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:35:11,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:35:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:35:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=664, Invalid=2416, Unknown=8, NotChecked=218, Total=3306 [2024-11-09 07:35:11,845 INFO L87 Difference]: Start difference. First operand 7827 states and 11575 transitions. Second operand has 25 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:35:13,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:35:16,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:35:18,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:20,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:22,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:24,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:35:27,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:29,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:31,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:33,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:35,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:35:38,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:40,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:42,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:35:44,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:46,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:49,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:51,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:53,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:55,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:35:58,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:36:00,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:37:04,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:37:05,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:37:06,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:37:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:37:19,532 INFO L93 Difference]: Finished difference Result 14893 states and 22079 transitions. [2024-11-09 07:37:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 07:37:19,533 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 74 [2024-11-09 07:37:19,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:37:19,595 INFO L225 Difference]: With dead ends: 14893 [2024-11-09 07:37:19,595 INFO L226 Difference]: Without dead ends: 7926 [2024-11-09 07:37:19,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 175 SyntacticMatches, 14 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=664, Invalid=2416, Unknown=8, NotChecked=218, Total=3306 [2024-11-09 07:37:19,625 INFO L432 NwaCegarLoop]: 1085 mSDtfsCounter, 45 mSDsluCounter, 15248 mSDsCounter, 0 mSdLazyCounter, 6158 mSolverCounterSat, 1 mSolverCounterUnsat, 50 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 16333 SdHoareTripleChecker+Invalid, 9035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6158 IncrementalHoareTripleChecker+Invalid, 50 IncrementalHoareTripleChecker+Unknown, 2826 IncrementalHoareTripleChecker+Unchecked, 127.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:37:19,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 16333 Invalid, 9035 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 6158 Invalid, 50 Unknown, 2826 Unchecked, 127.0s Time] [2024-11-09 07:37:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2024-11-09 07:37:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 7841. [2024-11-09 07:37:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7841 states, 4859 states have (on average 1.3000617410989916) internal successors, (6317), 4892 states have internal predecessors, (6317), 2637 states have call successors, (2637), 344 states have call predecessors, (2637), 344 states have return successors, (2643), 2629 states have call predecessors, (2643), 2635 states have call successors, (2643) [2024-11-09 07:37:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 11597 transitions. [2024-11-09 07:37:20,298 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 11597 transitions. Word has length 74 [2024-11-09 07:37:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:37:20,300 INFO L471 AbstractCegarLoop]: Abstraction has 7841 states and 11597 transitions. [2024-11-09 07:37:20,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 5 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 07:37:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 11597 transitions. [2024-11-09 07:37:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 07:37:20,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:37:20,305 INFO L215 NwaCegarLoop]: trace histogram [22, 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] [2024-11-09 07:37:20,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 07:37:20,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 07:37:20,507 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:37:20,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:37:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1585597365, now seen corresponding path program 1 times [2024-11-09 07:37:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:37:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702961919] [2024-11-09 07:37:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:37:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:37:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:37:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:37:29,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:37:29,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702961919] [2024-11-09 07:37:29,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702961919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:37:29,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247361340] [2024-11-09 07:37:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:37:29,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:37:29,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:37:29,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:37:29,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36e5ba6-d7f4-4e65-b348-d5b72a02c72b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:37:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:37:35,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 2414 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:37:35,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:37:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:37:35,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:37:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:37:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247361340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:37:43,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [700198523] [2024-11-09 07:37:43,079 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2024-11-09 07:37:43,080 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:37:43,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:37:43,081 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:37:43,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:37:53,445 INFO L197 IcfgInterpreter]: Interpreting procedure dev_to_hdlc with input of size 1 for LOIs [2024-11-09 07:37:53,457 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 7 for LOIs [2024-11-09 07:37:53,470 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_module_put with input of size 118 for LOIs [2024-11-09 07:37:53,719 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 13 for LOIs [2024-11-09 07:37:53,730 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:37:57,536 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_39| Int)) (and (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_39| 0)) (<= |v_ULTIMATE.start_main_~tmp___1~12#1_39| 2147483647) (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_39|)))))) (or (and .cse0 (exists ((|v_#valid_263| (Array Int Int)) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_24| Int)) (= |c_#valid| (store |v_#valid_263| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_24| 0)))) (and .cse0 (exists ((|v_#valid_263| (Array Int Int)) (|v_ULTIMATE.start_fst_ioctl_~#info~0#1.base_93| Int) (|v_ULTIMATE.start_fst_init_~#__key~1#1.base_24| Int) (|v_#length_64| (Array Int Int)) (|v_ULTIMATE.start_fst_ioctl_~#wrthdr~0#1.base_84| Int)) (let ((.cse2 (+ |c_#StackHeapBarrier| 1)) (.cse1 (store |v_#valid_263| |v_ULTIMATE.start_fst_init_~#__key~1#1.base_24| 0))) (and (= (store (store |v_#length_64| |v_ULTIMATE.start_fst_ioctl_~#wrthdr~0#1.base_84| 8) |v_ULTIMATE.start_fst_ioctl_~#info~0#1.base_93| 98) |c_#length|) (= |c_#valid| (store (store .cse1 |v_ULTIMATE.start_fst_ioctl_~#wrthdr~0#1.base_84| 0) |v_ULTIMATE.start_fst_ioctl_~#info~0#1.base_93| 0)) (not (= |v_ULTIMATE.start_fst_ioctl_~#wrthdr~0#1.base_84| 0)) (= (select (store .cse1 |v_ULTIMATE.start_fst_ioctl_~#wrthdr~0#1.base_84| 1) |v_ULTIMATE.start_fst_ioctl_~#info~0#1.base_93|) 0) (<= .cse2 |v_ULTIMATE.start_fst_ioctl_~#info~0#1.base_93|) (<= .cse2 |v_ULTIMATE.start_fst_ioctl_~#wrthdr~0#1.base_84|) (= (select .cse1 |v_ULTIMATE.start_fst_ioctl_~#wrthdr~0#1.base_84|) 0) (not (= |v_ULTIMATE.start_fst_ioctl_~#info~0#1.base_93| 0))))) (exists ((|v_ULTIMATE.start_main_~tmp___1~12#1_41| Int)) (and (<= 0 (+ 2147483648 |v_ULTIMATE.start_main_~tmp___1~12#1_41|)) (<= |v_ULTIMATE.start_main_~tmp___1~12#1_41| 2147483647) (not (= |v_ULTIMATE.start_main_~tmp___1~12#1_41| 0)))) (exists ((|v_ULTIMATE.start_capable_#t~nondet915#1_14| Int)) (and (= (mod |v_ULTIMATE.start_capable_#t~nondet915#1_14| 256) 0) (or (= |v_ULTIMATE.start_capable_#t~nondet915#1_14| 0) (= |v_ULTIMATE.start_capable_#t~nondet915#1_14| 1))))))) is different from true [2024-11-09 07:38:18,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [700198523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:38:18,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:38:18,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [25, 24, 25] total 59 [2024-11-09 07:38:18,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150790082] [2024-11-09 07:38:18,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:38:18,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 07:38:18,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:38:18,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 07:38:18,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=2639, Unknown=2, NotChecked=112, Total=3422 [2024-11-09 07:38:18,397 INFO L87 Difference]: Start difference. First operand 7841 states and 11597 transitions. Second operand has 26 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 07:38:20,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:38:22,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:24,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:38:27,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:29,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 07:38:31,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:33,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:36,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:38,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:40,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:42,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:45,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:47,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:38:49,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []