./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f6def3055939e7924c556782ca9d4709018ae81be71dcf327652b82e5d7c7965 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:36:05,264 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:36:05,355 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 18:36:05,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:36:05,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:36:05,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:36:05,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:36:05,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:36:05,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:36:05,388 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:36:05,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:36:05,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:36:05,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:36:05,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:36:05,389 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:36:05,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:36:05,390 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:36:05,390 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:36:05,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:36:05,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:36:05,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:36:05,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:05,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:36:05,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:36:05,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:36:05,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:36:05,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:05,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:36:05,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:36:05,392 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:36:05,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:36:05,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:36:05,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:36:05,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:36:05,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:36:05,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:36:05,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:36:05,393 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC 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 -> Automizer 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 -> f6def3055939e7924c556782ca9d4709018ae81be71dcf327652b82e5d7c7965 [2024-11-23 18:36:05,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:36:05,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:36:05,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:36:05,779 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:36:05,780 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:36:05,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2024-11-23 18:36:09,119 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/data/5b3c66972/edfbca12698547c780c3544d81aae13b/FLAGaa81a6679 [2024-11-23 18:36:09,869 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:36:09,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2024-11-23 18:36:09,926 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/data/5b3c66972/edfbca12698547c780c3544d81aae13b/FLAGaa81a6679 [2024-11-23 18:36:09,951 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/data/5b3c66972/edfbca12698547c780c3544d81aae13b [2024-11-23 18:36:09,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:36:09,957 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:36:09,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:36:09,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:36:09,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:36:09,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:36:09" (1/1) ... [2024-11-23 18:36:09,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11999047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:09, skipping insertion in model container [2024-11-23 18:36:09,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:36:09" (1/1) ... [2024-11-23 18:36:10,091 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:36:11,546 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_76efc82f-e2fe-47e1-90ca-8b817fac6f85/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225448,225461] [2024-11-23 18:36:11,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:36:11,667 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:36:11,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6012] [2024-11-23 18:36:11,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6014] [2024-11-23 18:36:11,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6024] [2024-11-23 18:36:11,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [6031] [2024-11-23 18:36:11,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btc %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [6038] [2024-11-23 18:36:11,939 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [6052-6053] [2024-11-23 18:36:11,943 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [6060] [2024-11-23 18:36:11,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6089] [2024-11-23 18:36:11,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6092] [2024-11-23 18:36:11,948 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6095] [2024-11-23 18:36:11,951 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6098] [2024-11-23 18:36:11,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; addl %1,%0": "+m" (v->counter): "ir" (i)); [6113] [2024-11-23 18:36:11,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [6120] [2024-11-23 18:36:11,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [6128-6129] [2024-11-23 18:36:12,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/atmdev.h"), "i" (271), "i" (12UL)); [6402-6403] [2024-11-23 18:36:12,033 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6468] [2024-11-23 18:36:12,056 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6490] [2024-11-23 18:36:12,062 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___4->state): : "memory", "cc"); [6503-6504] [2024-11-23 18:36:12,063 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___5->state): : "memory", "cc"); [6508-6509] [2024-11-23 18:36:12,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___6->state): : "memory", "cc"); [6513-6514] [2024-11-23 18:36:12,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___7->state): : "memory", "cc"); [6518-6519] [2024-11-23 18:36:12,066 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret___0), "+m" (tmp___10->state): : "memory", "cc"); [6539-6540] [2024-11-23 18:36:12,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret___0), "+m" (tmp___11->state): : "memory", "cc"); [6544-6545] [2024-11-23 18:36:12,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret___0), "+m" (tmp___12->state): : "memory", "cc"); [6549-6550] [2024-11-23 18:36:12,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret___0), "+m" (tmp___13->state): : "memory", "cc"); [6554-6555] [2024-11-23 18:36:12,282 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_76efc82f-e2fe-47e1-90ca-8b817fac6f85/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225448,225461] [2024-11-23 18:36:12,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:36:12,386 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:36:12,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12 WrapperNode [2024-11-23 18:36:12,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:36:12,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:36:12,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:36:12,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:36:12,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:12,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:12,759 INFO L138 Inliner]: procedures = 142, calls = 1108, calls flagged for inlining = 59, calls inlined = 58, statements flattened = 2557 [2024-11-23 18:36:12,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:36:12,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:36:12,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:36:12,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:36:12,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:12,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:12,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,264 INFO L175 MemorySlicer]: Split 830 memory accesses to 15 slices as follows [2, 1, 4, 15, 7, 110, 4, 2, 2, 5, 12, 11, 1, 4, 650]. 78 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [2, 1, 4, 0, 7, 0, 4, 0, 0, 0, 0, 0, 0, 0, 7]. The 529 writes are split as follows [0, 0, 0, 15, 0, 52, 0, 1, 0, 5, 2, 3, 0, 1, 450]. [2024-11-23 18:36:13,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,438 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:36:13,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:36:13,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:36:13,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:36:13,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (1/1) ... [2024-11-23 18:36:13,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:13,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:13,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:36:13,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:36:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure atm_sk [2024-11-23 18:36:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_sk [2024-11-23 18:36:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2024-11-23 18:36:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2024-11-23 18:36:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 18:36:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 18:36:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 18:36:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 18:36:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 18:36:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 18:36:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 18:36:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 18:36:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-23 18:36:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-23 18:36:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-23 18:36:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-23 18:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure change_bit [2024-11-23 18:36:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure change_bit [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure atm_alloc_charge [2024-11-23 18:36:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_alloc_charge [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2024-11-23 18:36:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2024-11-23 18:36:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __xchg_wrong_size [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-23 18:36:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#10 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#11 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#12 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#13 [2024-11-23 18:36:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#14 [2024-11-23 18:36:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 18:36:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 18:36:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 18:36:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 18:36:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 18:36:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 18:36:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 18:36:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 18:36:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-23 18:36:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-23 18:36:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#13 [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#14 [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-23 18:36:13,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 18:36:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-23 18:36:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2024-11-23 18:36:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-11-23 18:36:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#10 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#11 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#12 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#13 [2024-11-23 18:36:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#14 [2024-11-23 18:36:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-11-23 18:36:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-11-23 18:36:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-11-23 18:36:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-11-23 18:36:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-11-23 18:36:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-11-23 18:36:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2024-11-23 18:36:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2024-11-23 18:36:13,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2024-11-23 18:36:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2024-11-23 18:36:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#10 [2024-11-23 18:36:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#11 [2024-11-23 18:36:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#12 [2024-11-23 18:36:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#13 [2024-11-23 18:36:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#14 [2024-11-23 18:36:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2024-11-23 18:36:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2024-11-23 18:36:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-23 18:36:13,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-23 18:36:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2024-11-23 18:36:13,728 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2024-11-23 18:36:13,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-23 18:36:13,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-23 18:36:13,728 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_ioctl [2024-11-23 18:36:13,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_ioctl [2024-11-23 18:36:13,729 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-23 18:36:13,729 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-23 18:36:13,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 18:36:13,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 18:36:13,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 18:36:13,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 18:36:13,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 18:36:13,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 18:36:13,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 18:36:13,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 18:36:13,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 18:36:13,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-23 18:36:13,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-23 18:36:13,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2024-11-23 18:36:13,731 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-23 18:36:13,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-23 18:36:13,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-23 18:36:13,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-23 18:36:13,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#8 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#9 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#10 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#11 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#12 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#13 [2024-11-23 18:36:13,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#14 [2024-11-23 18:36:13,733 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-23 18:36:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-23 18:36:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-23 18:36:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-23 18:36:13,734 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#8 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#9 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#10 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#11 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#12 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#13 [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#14 [2024-11-23 18:36:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_dev_close [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_dev_close [2024-11-23 18:36:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-23 18:36:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:36:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 18:36:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-23 18:36:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2024-11-23 18:36:13,735 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2024-11-23 18:36:13,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2024-11-23 18:36:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_send [2024-11-23 18:36:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_send [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2024-11-23 18:36:13,736 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 18:36:13,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 18:36:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-23 18:36:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-23 18:36:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-23 18:36:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-23 18:36:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-23 18:36:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_create [2024-11-23 18:36:13,740 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_create [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_close [2024-11-23 18:36:13,741 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_close [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2024-11-23 18:36:13,741 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_close [2024-11-23 18:36:13,741 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_close [2024-11-23 18:36:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2024-11-23 18:36:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2024-11-23 18:36:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_put [2024-11-23 18:36:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_put [2024-11-23 18:36:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2024-11-23 18:36:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2024-11-23 18:36:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_lookup [2024-11-23 18:36:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_lookup [2024-11-23 18:36:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2024-11-23 18:36:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2024-11-23 18:36:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:36:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:36:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:36:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:36:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:36:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:36:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 18:36:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 18:36:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 18:36:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 18:36:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 18:36:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 18:36:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 18:36:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 18:36:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 18:36:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_send [2024-11-23 18:36:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_send [2024-11-23 18:36:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2024-11-23 18:36:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2024-11-23 18:36:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_send_control [2024-11-23 18:36:13,747 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_send_control [2024-11-23 18:36:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-23 18:36:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-23 18:36:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#10 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#11 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#12 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#13 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#14 [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2024-11-23 18:36:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:36:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:36:13,748 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2024-11-23 18:36:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2024-11-23 18:36:14,544 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:36:14,548 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:36:15,782 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-23 18:36:41,152 INFO L? ?]: Removed 1187 outVars from TransFormulas that were not future-live. [2024-11-23 18:36:41,152 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:36:41,207 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:36:41,212 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:36:41,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:36:41 BoogieIcfgContainer [2024-11-23 18:36:41,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:36:41,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:36:41,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:36:41,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:36:41,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:36:09" (1/3) ... [2024-11-23 18:36:41,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704efe42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:36:41, skipping insertion in model container [2024-11-23 18:36:41,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:12" (2/3) ... [2024-11-23 18:36:41,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704efe42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:36:41, skipping insertion in model container [2024-11-23 18:36:41,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:36:41" (3/3) ... [2024-11-23 18:36:41,233 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2024-11-23 18:36:41,255 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:36:41,257 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i that has 72 procedures, 786 locations, 1 initial locations, 47 loop locations, and 1 error locations. [2024-11-23 18:36:41,386 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:36:41,404 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=PETRI_NET, 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;@3bd1a8b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:36:41,404 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:36:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 667 states, 479 states have (on average 1.3402922755741127) internal successors, (642), 499 states have internal predecessors, (642), 142 states have call successors, (142), 45 states have call predecessors, (142), 44 states have return successors, (137), 134 states have call predecessors, (137), 137 states have call successors, (137) [2024-11-23 18:36:41,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:36:41,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:41,437 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:41,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:41,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1354750028, now seen corresponding path program 1 times [2024-11-23 18:36:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349357949] [2024-11-23 18:36:41,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:41,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-23 18:36:50,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:50,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349357949] [2024-11-23 18:36:50,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349357949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074690103] [2024-11-23 18:36:50,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:50,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:50,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:50,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:50,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:36:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:59,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 3661 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:36:59,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-23 18:36:59,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:36:59,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074690103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:59,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:36:59,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:36:59,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352281652] [2024-11-23 18:36:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:59,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:36:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:59,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:36:59,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:36:59,234 INFO L87 Difference]: Start difference. First operand has 667 states, 479 states have (on average 1.3402922755741127) internal successors, (642), 499 states have internal predecessors, (642), 142 states have call successors, (142), 45 states have call predecessors, (142), 44 states have return successors, (137), 134 states have call predecessors, (137), 137 states have call successors, (137) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:36:59,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:59,444 INFO L93 Difference]: Finished difference Result 1329 states and 1875 transitions. [2024-11-23 18:36:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:36:59,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2024-11-23 18:36:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:59,467 INFO L225 Difference]: With dead ends: 1329 [2024-11-23 18:36:59,467 INFO L226 Difference]: Without dead ends: 653 [2024-11-23 18:36:59,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:36:59,488 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:59,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:36:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-23 18:36:59,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2024-11-23 18:36:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 472 states have (on average 1.3241525423728813) internal successors, (625), 485 states have internal predecessors, (625), 137 states have call successors, (137), 44 states have call predecessors, (137), 43 states have return successors, (135), 132 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-23 18:36:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 897 transitions. [2024-11-23 18:36:59,654 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 897 transitions. Word has length 133 [2024-11-23 18:36:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:59,658 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 897 transitions. [2024-11-23 18:36:59,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:36:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 897 transitions. [2024-11-23 18:36:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:36:59,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:59,666 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:59,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:36:59,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:36:59,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:59,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2127221184, now seen corresponding path program 1 times [2024-11-23 18:36:59,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:59,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534751680] [2024-11-23 18:36:59,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:59,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-23 18:37:08,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:08,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534751680] [2024-11-23 18:37:08,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534751680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:08,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:08,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:37:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808066190] [2024-11-23 18:37:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:08,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:37:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:08,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:37:08,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:37:08,649 INFO L87 Difference]: Start difference. First operand 653 states and 897 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-23 18:37:12,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:37:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:13,649 INFO L93 Difference]: Finished difference Result 1895 states and 2610 transitions. [2024-11-23 18:37:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:37:13,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 133 [2024-11-23 18:37:13,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:13,679 INFO L225 Difference]: With dead ends: 1895 [2024-11-23 18:37:13,679 INFO L226 Difference]: Without dead ends: 1270 [2024-11-23 18:37:13,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:37:13,684 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 846 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:13,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1793 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2024-11-23 18:37:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2024-11-23 18:37:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1267. [2024-11-23 18:37:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 919 states have (on average 1.3275299238302503) internal successors, (1220), 944 states have internal predecessors, (1220), 263 states have call successors, (263), 85 states have call predecessors, (263), 84 states have return successors, (261), 255 states have call predecessors, (261), 261 states have call successors, (261) [2024-11-23 18:37:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1744 transitions. [2024-11-23 18:37:13,807 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 1744 transitions. Word has length 133 [2024-11-23 18:37:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:13,809 INFO L471 AbstractCegarLoop]: Abstraction has 1267 states and 1744 transitions. [2024-11-23 18:37:13,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-23 18:37:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 1744 transitions. [2024-11-23 18:37:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 18:37:13,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:13,818 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:13,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:37:13,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:13,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash -720681230, now seen corresponding path program 1 times [2024-11-23 18:37:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:13,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695635498] [2024-11-23 18:37:13,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:13,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-23 18:37:23,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695635498] [2024-11-23 18:37:23,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695635498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:23,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:37:23,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84124765] [2024-11-23 18:37:23,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:23,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:37:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:23,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:37:23,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:37:23,038 INFO L87 Difference]: Start difference. First operand 1267 states and 1744 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-23 18:37:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:23,452 INFO L93 Difference]: Finished difference Result 2505 states and 3450 transitions. [2024-11-23 18:37:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:37:23,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 136 [2024-11-23 18:37:23,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:23,469 INFO L225 Difference]: With dead ends: 2505 [2024-11-23 18:37:23,470 INFO L226 Difference]: Without dead ends: 1266 [2024-11-23 18:37:23,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:37:23,478 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 892 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:23,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1782 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:37:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-23 18:37:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1266. [2024-11-23 18:37:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 918 states have (on average 1.3246187363834423) internal successors, (1216), 943 states have internal predecessors, (1216), 263 states have call successors, (263), 85 states have call predecessors, (263), 84 states have return successors, (261), 255 states have call predecessors, (261), 261 states have call successors, (261) [2024-11-23 18:37:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1740 transitions. [2024-11-23 18:37:23,590 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1740 transitions. Word has length 136 [2024-11-23 18:37:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:23,591 INFO L471 AbstractCegarLoop]: Abstraction has 1266 states and 1740 transitions. [2024-11-23 18:37:23,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-23 18:37:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1740 transitions. [2024-11-23 18:37:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-23 18:37:23,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:23,602 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:23,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:37:23,603 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:23,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash 828143115, now seen corresponding path program 1 times [2024-11-23 18:37:23,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:23,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83504672] [2024-11-23 18:37:23,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:23,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-23 18:37:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83504672] [2024-11-23 18:37:30,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83504672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:30,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:37:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361217199] [2024-11-23 18:37:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:30,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:37:30,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:30,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:37:30,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:37:30,808 INFO L87 Difference]: Start difference. First operand 1266 states and 1740 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 18:37:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:31,081 INFO L93 Difference]: Finished difference Result 3739 states and 5159 transitions. [2024-11-23 18:37:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:37:31,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 144 [2024-11-23 18:37:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:31,109 INFO L225 Difference]: With dead ends: 3739 [2024-11-23 18:37:31,109 INFO L226 Difference]: Without dead ends: 2497 [2024-11-23 18:37:31,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:37:31,118 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 855 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:31,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1749 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:37:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2024-11-23 18:37:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2493. [2024-11-23 18:37:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 1811 states have (on average 1.326891220320265) internal successors, (2403), 1860 states have internal predecessors, (2403), 515 states have call successors, (515), 167 states have call predecessors, (515), 166 states have return successors, (513), 501 states have call predecessors, (513), 513 states have call successors, (513) [2024-11-23 18:37:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3431 transitions. [2024-11-23 18:37:31,330 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3431 transitions. Word has length 144 [2024-11-23 18:37:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:31,331 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 3431 transitions. [2024-11-23 18:37:31,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 18:37:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3431 transitions. [2024-11-23 18:37:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-23 18:37:31,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:31,336 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:31,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:37:31,337 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:31,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1689305980, now seen corresponding path program 1 times [2024-11-23 18:37:31,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:31,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235040848] [2024-11-23 18:37:31,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-23 18:37:38,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:38,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235040848] [2024-11-23 18:37:38,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235040848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:38,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:37:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108259091] [2024-11-23 18:37:38,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:38,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:37:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:38,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:37:38,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:37:38,303 INFO L87 Difference]: Start difference. First operand 2493 states and 3431 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:37:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:38,585 INFO L93 Difference]: Finished difference Result 4554 states and 6246 transitions. [2024-11-23 18:37:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:37:38,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 150 [2024-11-23 18:37:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:38,606 INFO L225 Difference]: With dead ends: 4554 [2024-11-23 18:37:38,606 INFO L226 Difference]: Without dead ends: 2089 [2024-11-23 18:37:38,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:37:38,620 INFO L435 NwaCegarLoop]: 748 mSDtfsCounter, 742 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:38,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 748 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:37:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2024-11-23 18:37:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2089. [2024-11-23 18:37:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 1527 states have (on average 1.3274394237066143) internal successors, (2027), 1564 states have internal predecessors, (2027), 411 states have call successors, (411), 151 states have call predecessors, (411), 150 states have return successors, (409), 401 states have call predecessors, (409), 409 states have call successors, (409) [2024-11-23 18:37:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2847 transitions. [2024-11-23 18:37:38,788 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2847 transitions. Word has length 150 [2024-11-23 18:37:38,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:38,789 INFO L471 AbstractCegarLoop]: Abstraction has 2089 states and 2847 transitions. [2024-11-23 18:37:38,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:37:38,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2847 transitions. [2024-11-23 18:37:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-23 18:37:38,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:38,803 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:38,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:37:38,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:38,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash 739184569, now seen corresponding path program 1 times [2024-11-23 18:37:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:38,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228869707] [2024-11-23 18:37:38,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-23 18:37:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228869707] [2024-11-23 18:37:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228869707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:37:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688316966] [2024-11-23 18:37:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:46,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:37:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:46,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:37:46,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:37:46,137 INFO L87 Difference]: Start difference. First operand 2089 states and 2847 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:37:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:46,487 INFO L93 Difference]: Finished difference Result 4252 states and 5799 transitions. [2024-11-23 18:37:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:37:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 176 [2024-11-23 18:37:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:46,508 INFO L225 Difference]: With dead ends: 4252 [2024-11-23 18:37:46,509 INFO L226 Difference]: Without dead ends: 2191 [2024-11-23 18:37:46,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:37:46,520 INFO L435 NwaCegarLoop]: 784 mSDtfsCounter, 555 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:46,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1491 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:37:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2024-11-23 18:37:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2178. [2024-11-23 18:37:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 1589 states have (on average 1.3360604153555695) internal successors, (2123), 1629 states have internal predecessors, (2123), 426 states have call successors, (426), 163 states have call predecessors, (426), 162 states have return successors, (424), 420 states have call predecessors, (424), 424 states have call successors, (424) [2024-11-23 18:37:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 2973 transitions. [2024-11-23 18:37:46,691 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 2973 transitions. Word has length 176 [2024-11-23 18:37:46,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:46,692 INFO L471 AbstractCegarLoop]: Abstraction has 2178 states and 2973 transitions. [2024-11-23 18:37:46,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:37:46,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 2973 transitions. [2024-11-23 18:37:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-23 18:37:46,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:46,702 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:46,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:37:46,702 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:46,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:46,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1967412442, now seen corresponding path program 1 times [2024-11-23 18:37:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:46,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768751919] [2024-11-23 18:37:46,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-23 18:37:54,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:54,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768751919] [2024-11-23 18:37:54,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768751919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:54,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:54,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:37:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78435952] [2024-11-23 18:37:54,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:54,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:37:54,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:54,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:37:54,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:37:54,560 INFO L87 Difference]: Start difference. First operand 2178 states and 2973 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 18:37:55,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:55,020 INFO L93 Difference]: Finished difference Result 3957 states and 5406 transitions. [2024-11-23 18:37:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:37:55,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 178 [2024-11-23 18:37:55,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:55,042 INFO L225 Difference]: With dead ends: 3957 [2024-11-23 18:37:55,043 INFO L226 Difference]: Without dead ends: 2184 [2024-11-23 18:37:55,052 INFO L434 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 [2024-11-23 18:37:55,053 INFO L435 NwaCegarLoop]: 747 mSDtfsCounter, 1 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:55,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2230 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:37:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2024-11-23 18:37:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2182. [2024-11-23 18:37:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 1593 states have (on average 1.335216572504708) internal successors, (2127), 1633 states have internal predecessors, (2127), 426 states have call successors, (426), 163 states have call predecessors, (426), 162 states have return successors, (424), 420 states have call predecessors, (424), 424 states have call successors, (424) [2024-11-23 18:37:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2977 transitions. [2024-11-23 18:37:55,229 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2977 transitions. Word has length 178 [2024-11-23 18:37:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:55,230 INFO L471 AbstractCegarLoop]: Abstraction has 2182 states and 2977 transitions. [2024-11-23 18:37:55,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 18:37:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2977 transitions. [2024-11-23 18:37:55,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 18:37:55,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:55,240 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:55,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:37:55,240 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:55,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash -239297155, now seen corresponding path program 1 times [2024-11-23 18:37:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:55,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480896602] [2024-11-23 18:37:55,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:55,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-23 18:38:02,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:02,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480896602] [2024-11-23 18:38:02,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480896602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:02,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:02,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:38:02,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129994405] [2024-11-23 18:38:02,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:02,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:38:02,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:02,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:38:02,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:38:02,733 INFO L87 Difference]: Start difference. First operand 2182 states and 2977 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 18:38:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:03,128 INFO L93 Difference]: Finished difference Result 3965 states and 5414 transitions. [2024-11-23 18:38:03,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:38:03,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 179 [2024-11-23 18:38:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:03,153 INFO L225 Difference]: With dead ends: 3965 [2024-11-23 18:38:03,153 INFO L226 Difference]: Without dead ends: 2188 [2024-11-23 18:38:03,162 INFO L434 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 [2024-11-23 18:38:03,163 INFO L435 NwaCegarLoop]: 747 mSDtfsCounter, 1 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:03,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2230 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:38:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2024-11-23 18:38:03,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2182. [2024-11-23 18:38:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 1593 states have (on average 1.335216572504708) internal successors, (2127), 1633 states have internal predecessors, (2127), 426 states have call successors, (426), 163 states have call predecessors, (426), 162 states have return successors, (424), 420 states have call predecessors, (424), 424 states have call successors, (424) [2024-11-23 18:38:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2977 transitions. [2024-11-23 18:38:03,318 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2977 transitions. Word has length 179 [2024-11-23 18:38:03,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:03,319 INFO L471 AbstractCegarLoop]: Abstraction has 2182 states and 2977 transitions. [2024-11-23 18:38:03,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 18:38:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2977 transitions. [2024-11-23 18:38:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-23 18:38:03,325 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:03,325 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:03,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:38:03,326 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:03,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:03,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1073607506, now seen corresponding path program 1 times [2024-11-23 18:38:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599717905] [2024-11-23 18:38:03,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:03,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-23 18:38:13,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:13,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599717905] [2024-11-23 18:38:13,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599717905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:13,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:13,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:38:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844564186] [2024-11-23 18:38:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:13,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:38:13,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:13,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:38:13,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:38:13,689 INFO L87 Difference]: Start difference. First operand 2182 states and 2977 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:38:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:14,311 INFO L93 Difference]: Finished difference Result 3965 states and 5416 transitions. [2024-11-23 18:38:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:38:14,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 188 [2024-11-23 18:38:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:14,338 INFO L225 Difference]: With dead ends: 3965 [2024-11-23 18:38:14,338 INFO L226 Difference]: Without dead ends: 2188 [2024-11-23 18:38:14,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:14,349 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 3 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:14,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2217 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:38:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2024-11-23 18:38:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2186. [2024-11-23 18:38:14,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 1597 states have (on average 1.3343769567939887) internal successors, (2131), 1637 states have internal predecessors, (2131), 426 states have call successors, (426), 163 states have call predecessors, (426), 162 states have return successors, (424), 420 states have call predecessors, (424), 424 states have call successors, (424) [2024-11-23 18:38:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 2981 transitions. [2024-11-23 18:38:14,511 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 2981 transitions. Word has length 188 [2024-11-23 18:38:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:14,512 INFO L471 AbstractCegarLoop]: Abstraction has 2186 states and 2981 transitions. [2024-11-23 18:38:14,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:38:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 2981 transitions. [2024-11-23 18:38:14,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-23 18:38:14,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:14,519 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:14,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:38:14,520 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:14,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:14,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1488918903, now seen corresponding path program 1 times [2024-11-23 18:38:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:14,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789466223] [2024-11-23 18:38:14,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-23 18:38:22,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:22,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789466223] [2024-11-23 18:38:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789466223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:22,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:22,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:38:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619642204] [2024-11-23 18:38:22,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:22,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:38:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:22,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:38:22,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:38:22,161 INFO L87 Difference]: Start difference. First operand 2186 states and 2981 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-23 18:38:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:22,861 INFO L93 Difference]: Finished difference Result 3981 states and 5434 transitions. [2024-11-23 18:38:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:38:22,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 185 [2024-11-23 18:38:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:22,892 INFO L225 Difference]: With dead ends: 3981 [2024-11-23 18:38:22,892 INFO L226 Difference]: Without dead ends: 2200 [2024-11-23 18:38:22,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:38:22,905 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 1 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:22,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4454 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 18:38:22,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2024-11-23 18:38:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 2194. [2024-11-23 18:38:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 1603 states have (on average 1.3331253898939488) internal successors, (2137), 1643 states have internal predecessors, (2137), 426 states have call successors, (426), 163 states have call predecessors, (426), 164 states have return successors, (428), 422 states have call predecessors, (428), 424 states have call successors, (428) [2024-11-23 18:38:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 2991 transitions. [2024-11-23 18:38:23,063 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 2991 transitions. Word has length 185 [2024-11-23 18:38:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:23,064 INFO L471 AbstractCegarLoop]: Abstraction has 2194 states and 2991 transitions. [2024-11-23 18:38:23,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-23 18:38:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 2991 transitions. [2024-11-23 18:38:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-23 18:38:23,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:23,074 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:23,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:38:23,074 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:23,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:23,075 INFO L85 PathProgramCache]: Analyzing trace with hash 824552265, now seen corresponding path program 1 times [2024-11-23 18:38:23,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584224578] [2024-11-23 18:38:23,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:23,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-23 18:38:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:34,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584224578] [2024-11-23 18:38:34,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584224578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:34,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:34,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:38:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950254983] [2024-11-23 18:38:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:34,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:38:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:34,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:38:34,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:38:34,056 INFO L87 Difference]: Start difference. First operand 2194 states and 2991 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:38:35,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:35,211 INFO L93 Difference]: Finished difference Result 4007 states and 5482 transitions. [2024-11-23 18:38:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:38:35,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 199 [2024-11-23 18:38:35,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:35,232 INFO L225 Difference]: With dead ends: 4007 [2024-11-23 18:38:35,233 INFO L226 Difference]: Without dead ends: 2218 [2024-11-23 18:38:35,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:38:35,241 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 4 mSDsluCounter, 4445 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5190 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:35,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5190 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 18:38:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2024-11-23 18:38:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2206. [2024-11-23 18:38:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1611 states have (on average 1.3314711359404097) internal successors, (2145), 1651 states have internal predecessors, (2145), 426 states have call successors, (426), 163 states have call predecessors, (426), 168 states have return successors, (444), 426 states have call predecessors, (444), 424 states have call successors, (444) [2024-11-23 18:38:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3015 transitions. [2024-11-23 18:38:35,390 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3015 transitions. Word has length 199 [2024-11-23 18:38:35,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:35,391 INFO L471 AbstractCegarLoop]: Abstraction has 2206 states and 3015 transitions. [2024-11-23 18:38:35,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:38:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3015 transitions. [2024-11-23 18:38:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-23 18:38:35,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:35,400 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:35,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:38:35,400 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:35,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1562798331, now seen corresponding path program 1 times [2024-11-23 18:38:35,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698886882] [2024-11-23 18:38:35,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:35,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-23 18:38:44,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:44,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698886882] [2024-11-23 18:38:44,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698886882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:44,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:44,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:38:44,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892859480] [2024-11-23 18:38:44,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:44,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:38:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:44,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:38:44,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:38:44,529 INFO L87 Difference]: Start difference. First operand 2206 states and 3015 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:38:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:45,024 INFO L93 Difference]: Finished difference Result 4017 states and 5500 transitions. [2024-11-23 18:38:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:38:45,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 198 [2024-11-23 18:38:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:45,044 INFO L225 Difference]: With dead ends: 4017 [2024-11-23 18:38:45,045 INFO L226 Difference]: Without dead ends: 2216 [2024-11-23 18:38:45,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:38:45,055 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 0 mSDsluCounter, 3720 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:45,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4466 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:38:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2024-11-23 18:38:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2210. [2024-11-23 18:38:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 1615 states have (on average 1.3306501547987617) internal successors, (2149), 1653 states have internal predecessors, (2149), 426 states have call successors, (426), 163 states have call predecessors, (426), 168 states have return successors, (444), 428 states have call predecessors, (444), 424 states have call successors, (444) [2024-11-23 18:38:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3019 transitions. [2024-11-23 18:38:45,208 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3019 transitions. Word has length 198 [2024-11-23 18:38:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:45,209 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3019 transitions. [2024-11-23 18:38:45,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 18:38:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3019 transitions. [2024-11-23 18:38:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 18:38:45,217 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:45,218 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:45,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:38:45,218 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:45,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:45,219 INFO L85 PathProgramCache]: Analyzing trace with hash -600591178, now seen corresponding path program 1 times [2024-11-23 18:38:45,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:45,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790882109] [2024-11-23 18:38:45,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:45,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-23 18:38:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790882109] [2024-11-23 18:38:55,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790882109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:38:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152436974] [2024-11-23 18:38:55,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:55,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:38:55,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:38:55,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:40:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:13,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 4109 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 18:40:13,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-23 18:40:13,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:40:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152436974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:13,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:40:13,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-23 18:40:13,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224685009] [2024-11-23 18:40:13,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:13,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:40:13,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:13,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:40:13,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:40:13,942 INFO L87 Difference]: Start difference. First operand 2210 states and 3019 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 18:40:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:14,840 INFO L93 Difference]: Finished difference Result 4400 states and 6013 transitions. [2024-11-23 18:40:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:40:14,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 204 [2024-11-23 18:40:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:14,863 INFO L225 Difference]: With dead ends: 4400 [2024-11-23 18:40:14,863 INFO L226 Difference]: Without dead ends: 2211 [2024-11-23 18:40:14,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:40:14,882 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 4 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:14,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3710 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:40:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2024-11-23 18:40:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2211. [2024-11-23 18:40:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 1616 states have (on average 1.3304455445544554) internal successors, (2150), 1654 states have internal predecessors, (2150), 426 states have call successors, (426), 163 states have call predecessors, (426), 168 states have return successors, (444), 428 states have call predecessors, (444), 424 states have call successors, (444) [2024-11-23 18:40:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3020 transitions. [2024-11-23 18:40:15,050 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3020 transitions. Word has length 204 [2024-11-23 18:40:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:15,050 INFO L471 AbstractCegarLoop]: Abstraction has 2211 states and 3020 transitions. [2024-11-23 18:40:15,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 18:40:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3020 transitions. [2024-11-23 18:40:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-23 18:40:15,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:15,061 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:15,261 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process [2024-11-23 18:40:15,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 137 [2024-11-23 18:40:15,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:15,369 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:15,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1927213676, now seen corresponding path program 1 times [2024-11-23 18:40:15,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:15,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196422108] [2024-11-23 18:40:15,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:15,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-23 18:40:25,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:25,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196422108] [2024-11-23 18:40:25,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196422108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619480146] [2024-11-23 18:40:25,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:25,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:25,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:25,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:25,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:42:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:42:09,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 4202 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 18:42:09,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:42:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-23 18:42:10,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:42:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-23 18:42:14,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619480146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:42:14,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:42:14,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-23 18:42:14,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141696129] [2024-11-23 18:42:14,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:42:14,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 18:42:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:42:14,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 18:42:14,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:42:14,353 INFO L87 Difference]: Start difference. First operand 2211 states and 3020 transitions. Second operand has 13 states, 11 states have (on average 11.818181818181818) internal successors, (130), 13 states have internal predecessors, (130), 4 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-23 18:42:15,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:42:15,937 INFO L93 Difference]: Finished difference Result 4413 states and 6028 transitions. [2024-11-23 18:42:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 18:42:15,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 11.818181818181818) internal successors, (130), 13 states have internal predecessors, (130), 4 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 207 [2024-11-23 18:42:15,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:42:15,957 INFO L225 Difference]: With dead ends: 4413 [2024-11-23 18:42:15,958 INFO L226 Difference]: Without dead ends: 2223 [2024-11-23 18:42:15,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 407 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-23 18:42:15,967 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 12 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:42:15,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3724 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 18:42:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2024-11-23 18:42:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2223. [2024-11-23 18:42:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1625 states have (on average 1.3292307692307692) internal successors, (2160), 1663 states have internal predecessors, (2160), 427 states have call successors, (427), 165 states have call predecessors, (427), 170 states have return successors, (445), 429 states have call predecessors, (445), 425 states have call successors, (445) [2024-11-23 18:42:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3032 transitions. [2024-11-23 18:42:16,113 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3032 transitions. Word has length 207 [2024-11-23 18:42:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:42:16,114 INFO L471 AbstractCegarLoop]: Abstraction has 2223 states and 3032 transitions. [2024-11-23 18:42:16,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 11.818181818181818) internal successors, (130), 13 states have internal predecessors, (130), 4 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-23 18:42:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3032 transitions. [2024-11-23 18:42:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-23 18:42:16,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:42:16,123 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:42:16,325 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2024-11-23 18:42:16,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 137 [2024-11-23 18:42:16,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:42:16,474 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:42:16,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:42:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1890993418, now seen corresponding path program 1 times [2024-11-23 18:42:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:42:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785802922] [2024-11-23 18:42:16,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:42:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:42:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:42:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-11-23 18:42:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:42:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785802922] [2024-11-23 18:42:25,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785802922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:42:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655498165] [2024-11-23 18:42:25,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:42:25,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:42:25,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:42:25,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:42:25,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:44:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:44:50,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 4169 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 18:44:50,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:44:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-23 18:44:51,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:44:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-11-23 18:44:55,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655498165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:44:55,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:44:55,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-23 18:44:55,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445109120] [2024-11-23 18:44:55,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:44:55,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 18:44:55,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:44:55,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 18:44:55,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-23 18:44:55,849 INFO L87 Difference]: Start difference. First operand 2223 states and 3032 transitions. Second operand has 16 states, 14 states have (on average 9.428571428571429) internal successors, (132), 16 states have internal predecessors, (132), 4 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-23 18:44:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:44:58,352 INFO L93 Difference]: Finished difference Result 4421 states and 6034 transitions. [2024-11-23 18:44:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 18:44:58,353 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 9.428571428571429) internal successors, (132), 16 states have internal predecessors, (132), 4 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 208 [2024-11-23 18:44:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:44:58,377 INFO L225 Difference]: With dead ends: 4421 [2024-11-23 18:44:58,377 INFO L226 Difference]: Without dead ends: 2225 [2024-11-23 18:44:58,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 407 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:44:58,388 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 10 mSDsluCounter, 6687 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7433 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:44:58,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7433 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 18:44:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2024-11-23 18:44:58,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2024-11-23 18:44:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1627 states have (on average 1.3288260602335586) internal successors, (2162), 1665 states have internal predecessors, (2162), 427 states have call successors, (427), 165 states have call predecessors, (427), 170 states have return successors, (445), 429 states have call predecessors, (445), 425 states have call successors, (445) [2024-11-23 18:44:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3034 transitions. [2024-11-23 18:44:58,512 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3034 transitions. Word has length 208 [2024-11-23 18:44:58,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:44:58,513 INFO L471 AbstractCegarLoop]: Abstraction has 2225 states and 3034 transitions. [2024-11-23 18:44:58,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 9.428571428571429) internal successors, (132), 16 states have internal predecessors, (132), 4 states have call successors, (33), 2 states have call predecessors, (33), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2024-11-23 18:44:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3034 transitions. [2024-11-23 18:44:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-23 18:44:58,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:44:58,520 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:44:58,721 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2024-11-23 18:44:58,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2024-11-23 18:44:58,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:44:58,875 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:44:58,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:44:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash -640253786, now seen corresponding path program 2 times [2024-11-23 18:44:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:44:58,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939754986] [2024-11-23 18:44:58,876 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:44:58,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:45:06,260 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:45:06,260 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:45:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-23 18:45:08,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:45:08,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939754986] [2024-11-23 18:45:08,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939754986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:45:08,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988818688] [2024-11-23 18:45:08,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:45:08,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:45:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:45:08,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:45:08,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76efc82f-e2fe-47e1-90ca-8b817fac6f85/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process