./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:31:52,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:31:53,023 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:31:53,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:31:53,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:31:53,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:31:53,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:31:53,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:31:53,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:31:53,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:31:53,095 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:31:53,096 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:31:53,096 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:31:53,103 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:31:53,103 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:31:53,104 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:31:53,106 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:31:53,106 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:31:53,107 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:31:53,107 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:31:53,108 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:31:53,109 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:31:53,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:31:53,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:31:53,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:31:53,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:31:53,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:31:53,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:31:53,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:31:53,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:31:53,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:31:53,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:31:53,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:31:53,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:31:53,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:53,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:31:53,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:31:53,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:31:53,117 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:31:53,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:31:53,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:31:53,118 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:31:53,118 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:31:53,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:31:53,119 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac653d5d4bd645822c87d49861fb2a5e304e57a9bdc7e425845f1dc10a0731d2 [2023-11-23 20:31:53,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:31:53,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:31:53,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:31:53,484 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:31:53,485 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:31:53,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-23 20:31:57,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:31:57,969 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:31:57,970 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-23 20:31:58,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/data/089dcbb35/4e848681cd80426a8df0f8f94be9ecb6/FLAG6922e8dcd [2023-11-23 20:31:58,068 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/data/089dcbb35/4e848681cd80426a8df0f8f94be9ecb6 [2023-11-23 20:31:58,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:31:58,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:31:58,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:58,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:31:58,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:31:58,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:58" (1/1) ... [2023-11-23 20:31:58,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdebb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:58, skipping insertion in model container [2023-11-23 20:31:58,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:58" (1/1) ... [2023-11-23 20:31:58,310 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:01,121 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2023-11-23 20:32:01,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:01,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:01,469 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"); [3515] [2023-11-23 20:32:01,474 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; subl %2,%0; sete %1": "+m" (v->counter), "=qm" (c): "ir" (i): "memory"); [3563-3564] [2023-11-23 20:32:01,475 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [3575-3576] [2023-11-23 20:32:01,476 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3579-3580] [2023-11-23 20:32:01,476 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3583-3584] [2023-11-23 20:32:01,477 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3587-3588] [2023-11-23 20:32:01,916 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)); [6907] [2023-11-23 20:32:01,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6914] [2023-11-23 20:32:01,917 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 %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6923-6924] [2023-11-23 20:32:01,918 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 %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6940-6941] [2023-11-23 20:32:01,919 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)); [6955-6956] [2023-11-23 20:32:01,920 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6969] [2023-11-23 20:32:01,921 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6972] [2023-11-23 20:32:01,921 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6975] [2023-11-23 20:32:01,922 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6978] [2023-11-23 20:32:01,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [7000] [2023-11-23 20:32:01,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7003] [2023-11-23 20:32:01,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7006] [2023-11-23 20:32:01,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [7009] [2023-11-23 20:32:02,043 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i[258672,258685] [2023-11-23 20:32:02,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:02,227 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:02,227 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:02,227 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:02,236 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:02,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02 WrapperNode [2023-11-23 20:32:02,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:02,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:02,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:02,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:02,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,612 INFO L138 Inliner]: procedures = 373, calls = 3058, calls flagged for inlining = 174, calls inlined = 166, statements flattened = 6105 [2023-11-23 20:32:02,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:02,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:02,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:02,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:02,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:02,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:02,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:02,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:02,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (1/1) ... [2023-11-23 20:32:02,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:02,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:03,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:03,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e0f4d7-b7f6-4480-9e2b-1e39ddf4cd9f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2023-11-23 20:32:03,053 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2023-11-23 20:32:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2023-11-23 20:32:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2023-11-23 20:32:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2023-11-23 20:32:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2023-11-23 20:32:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2023-11-23 20:32:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2023-11-23 20:32:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-23 20:32:03,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-23 20:32:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 20:32:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 20:32:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-23 20:32:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-23 20:32:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-23 20:32:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-23 20:32:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2023-11-23 20:32:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2023-11-23 20:32:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-23 20:32:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-23 20:32:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2023-11-23 20:32:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2023-11-23 20:32:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2023-11-23 20:32:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2023-11-23 20:32:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2023-11-23 20:32:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2023-11-23 20:32:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2023-11-23 20:32:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2023-11-23 20:32:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:32:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:32:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-23 20:32:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-23 20:32:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2023-11-23 20:32:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2023-11-23 20:32:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2023-11-23 20:32:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2023-11-23 20:32:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2023-11-23 20:32:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2023-11-23 20:32:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-11-23 20:32:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-11-23 20:32:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:32:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:32:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-23 20:32:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-23 20:32:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:32:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:32:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2023-11-23 20:32:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2023-11-23 20:32:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2023-11-23 20:32:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2023-11-23 20:32:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-23 20:32:03,069 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-23 20:32:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2023-11-23 20:32:03,069 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2023-11-23 20:32:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-23 20:32:03,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-23 20:32:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 20:32:03,070 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 20:32:03,070 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_get_by_index [2023-11-23 20:32:03,070 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_get_by_index [2023-11-23 20:32:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2023-11-23 20:32:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2023-11-23 20:32:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2023-11-23 20:32:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2023-11-23 20:32:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2023-11-23 20:32:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2023-11-23 20:32:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2023-11-23 20:32:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2023-11-23 20:32:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-23 20:32:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-23 20:32:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 20:32:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 20:32:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-23 20:32:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-23 20:32:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-23 20:32:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-23 20:32:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:32:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:32:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:32:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 20:32:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 20:32:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2023-11-23 20:32:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2023-11-23 20:32:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2023-11-23 20:32:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2023-11-23 20:32:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2023-11-23 20:32:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2023-11-23 20:32:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2023-11-23 20:32:03,131 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2023-11-23 20:32:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-23 20:32:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-23 20:32:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2023-11-23 20:32:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2023-11-23 20:32:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:32:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-23 20:32:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-23 20:32:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-23 20:32:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2023-11-23 20:32:03,132 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2023-11-23 20:32:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2023-11-23 20:32:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2023-11-23 20:32:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:32:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:32:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2023-11-23 20:32:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2023-11-23 20:32:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:32:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:32:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:32:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:32:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:32:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:32:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2023-11-23 20:32:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2023-11-23 20:32:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-23 20:32:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-23 20:32:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 20:32:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 20:32:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-23 20:32:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-23 20:32:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-11-23 20:32:03,134 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-11-23 20:32:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:32:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:32:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2023-11-23 20:32:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2023-11-23 20:32:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2023-11-23 20:32:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2023-11-23 20:32:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 20:32:03,135 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 20:32:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 20:32:03,136 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 20:32:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2023-11-23 20:32:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2023-11-23 20:32:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-11-23 20:32:03,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-11-23 20:32:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:32:03,140 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:32:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2023-11-23 20:32:03,141 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2023-11-23 20:32:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-23 20:32:03,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-23 20:32:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-23 20:32:03,142 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-23 20:32:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-11-23 20:32:03,143 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2023-11-23 20:32:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 20:32:03,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 20:32:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 20:32:03,144 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 20:32:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2023-11-23 20:32:03,144 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2023-11-23 20:32:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2023-11-23 20:32:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2023-11-23 20:32:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2023-11-23 20:32:03,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2023-11-23 20:32:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-11-23 20:32:03,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-11-23 20:32:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2023-11-23 20:32:03,146 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2023-11-23 20:32:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-11-23 20:32:03,147 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-11-23 20:32:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:32:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-11-23 20:32:03,147 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-11-23 20:32:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-23 20:32:03,147 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-23 20:32:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 20:32:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 20:32:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2023-11-23 20:32:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2023-11-23 20:32:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2023-11-23 20:32:03,148 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2023-11-23 20:32:03,148 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 20:32:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 20:32:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 20:32:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 20:32:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2023-11-23 20:32:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2023-11-23 20:32:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-23 20:32:03,150 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-23 20:32:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:32:03,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:32:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-23 20:32:03,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-23 20:32:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:32:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 20:32:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 20:32:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2023-11-23 20:32:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2023-11-23 20:32:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-11-23 20:32:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-23 20:32:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-23 20:32:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-23 20:32:03,152 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-23 20:32:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:32:03,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:32:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-11-23 20:32:03,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-11-23 20:32:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2023-11-23 20:32:03,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2023-11-23 20:32:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-23 20:32:03,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-23 20:32:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:32:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2023-11-23 20:32:03,154 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2023-11-23 20:32:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:32:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 20:32:03,154 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:32:03,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:32:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 20:32:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 20:32:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2023-11-23 20:32:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2023-11-23 20:32:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2023-11-23 20:32:03,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2023-11-23 20:32:03,155 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 20:32:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 20:32:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-11-23 20:32:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-11-23 20:32:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2023-11-23 20:32:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2023-11-23 20:32:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 20:32:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 20:32:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2023-11-23 20:32:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2023-11-23 20:32:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2023-11-23 20:32:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2023-11-23 20:32:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 20:32:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 20:32:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2023-11-23 20:32:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2023-11-23 20:32:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:32:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:32:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2023-11-23 20:32:03,159 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2023-11-23 20:32:03,159 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 20:32:03,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 20:32:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2023-11-23 20:32:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2023-11-23 20:32:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 20:32:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 20:32:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 20:32:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 20:32:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-11-23 20:32:03,177 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-11-23 20:32:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-11-23 20:32:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-11-23 20:32:04,032 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:04,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:15,221 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:16,931 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:16,932 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:32:16,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:16 BoogieIcfgContainer [2023-11-23 20:32:16,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:16,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:16,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:16,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:16,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:31:58" (1/3) ... [2023-11-23 20:32:16,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20246d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:16, skipping insertion in model container [2023-11-23 20:32:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:02" (2/3) ... [2023-11-23 20:32:16,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20246d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:16, skipping insertion in model container [2023-11-23 20:32:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:16" (3/3) ... [2023-11-23 20:32:16,956 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--serial--usbserial.ko-ldv_main0.cil.out.i [2023-11-23 20:32:16,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:16,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:32:17,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:17,151 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e3c438c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:17,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:32:17,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 1662 states, 1015 states have (on average 1.3221674876847291) internal successors, (1342), 1049 states have internal predecessors, (1342), 527 states have call successors, (527), 118 states have call predecessors, (527), 118 states have return successors, (527), 513 states have call predecessors, (527), 527 states have call successors, (527) [2023-11-23 20:32:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:32:17,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:17,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:17,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:17,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash 98616312, now seen corresponding path program 1 times [2023-11-23 20:32:17,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:17,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759413196] [2023-11-23 20:32:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:18,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:18,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759413196] [2023-11-23 20:32:18,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759413196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:18,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:18,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:18,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490710834] [2023-11-23 20:32:18,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:18,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:18,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:18,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:18,334 INFO L87 Difference]: Start difference. First operand has 1662 states, 1015 states have (on average 1.3221674876847291) internal successors, (1342), 1049 states have internal predecessors, (1342), 527 states have call successors, (527), 118 states have call predecessors, (527), 118 states have return successors, (527), 513 states have call predecessors, (527), 527 states have call successors, (527) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:32:21,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:24,812 INFO L93 Difference]: Finished difference Result 4696 states and 7038 transitions. [2023-11-23 20:32:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:24,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2023-11-23 20:32:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:24,871 INFO L225 Difference]: With dead ends: 4696 [2023-11-23 20:32:24,871 INFO L226 Difference]: Without dead ends: 3064 [2023-11-23 20:32:24,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:24,900 INFO L413 NwaCegarLoop]: 2262 mSDtfsCounter, 2376 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:24,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 4129 Invalid, 438 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 432 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-11-23 20:32:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-11-23 20:32:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3059. [2023-11-23 20:32:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 1874 states have (on average 1.3191035218783351) internal successors, (2472), 1936 states have internal predecessors, (2472), 961 states have call successors, (961), 231 states have call predecessors, (961), 223 states have return successors, (1024), 909 states have call predecessors, (1024), 945 states have call successors, (1024) [2023-11-23 20:32:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4457 transitions. [2023-11-23 20:32:25,245 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4457 transitions. Word has length 23 [2023-11-23 20:32:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:25,246 INFO L495 AbstractCegarLoop]: Abstraction has 3059 states and 4457 transitions. [2023-11-23 20:32:25,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:32:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4457 transitions. [2023-11-23 20:32:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 20:32:25,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:25,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:25,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:25,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:25,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:25,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1239916692, now seen corresponding path program 1 times [2023-11-23 20:32:25,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:25,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173338607] [2023-11-23 20:32:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:25,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:25,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173338607] [2023-11-23 20:32:25,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173338607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:25,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:25,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:25,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406164597] [2023-11-23 20:32:25,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:25,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:25,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:25,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:25,751 INFO L87 Difference]: Start difference. First operand 3059 states and 4457 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:32:28,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:30,130 INFO L93 Difference]: Finished difference Result 3061 states and 4458 transitions. [2023-11-23 20:32:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-23 20:32:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:30,164 INFO L225 Difference]: With dead ends: 3061 [2023-11-23 20:32:30,164 INFO L226 Difference]: Without dead ends: 3058 [2023-11-23 20:32:30,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:30,168 INFO L413 NwaCegarLoop]: 2159 mSDtfsCounter, 2366 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:30,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2366 Valid, 2160 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-23 20:32:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2023-11-23 20:32:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3058. [2023-11-23 20:32:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 1874 states have (on average 1.3185699039487726) internal successors, (2471), 1935 states have internal predecessors, (2471), 960 states have call successors, (960), 231 states have call predecessors, (960), 223 states have return successors, (1024), 909 states have call predecessors, (1024), 945 states have call successors, (1024) [2023-11-23 20:32:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4455 transitions. [2023-11-23 20:32:30,387 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4455 transitions. Word has length 24 [2023-11-23 20:32:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:30,388 INFO L495 AbstractCegarLoop]: Abstraction has 3058 states and 4455 transitions. [2023-11-23 20:32:30,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:32:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4455 transitions. [2023-11-23 20:32:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 20:32:30,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:30,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:30,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:32:30,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:30,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 215238011, now seen corresponding path program 1 times [2023-11-23 20:32:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:30,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030130860] [2023-11-23 20:32:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:30,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:30,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:30,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030130860] [2023-11-23 20:32:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030130860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:30,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:30,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143996749] [2023-11-23 20:32:30,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:30,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:30,877 INFO L87 Difference]: Start difference. First operand 3058 states and 4455 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:32:33,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:34,920 INFO L93 Difference]: Finished difference Result 3060 states and 4456 transitions. [2023-11-23 20:32:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-11-23 20:32:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:34,953 INFO L225 Difference]: With dead ends: 3060 [2023-11-23 20:32:34,953 INFO L226 Difference]: Without dead ends: 3057 [2023-11-23 20:32:34,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:34,958 INFO L413 NwaCegarLoop]: 2157 mSDtfsCounter, 2363 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2363 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:34,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2363 Valid, 2158 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 20:32:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2023-11-23 20:32:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 3057. [2023-11-23 20:32:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 1874 states have (on average 1.3180362860192103) internal successors, (2470), 1934 states have internal predecessors, (2470), 959 states have call successors, (959), 231 states have call predecessors, (959), 223 states have return successors, (1024), 909 states have call predecessors, (1024), 945 states have call successors, (1024) [2023-11-23 20:32:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4453 transitions. [2023-11-23 20:32:35,270 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4453 transitions. Word has length 25 [2023-11-23 20:32:35,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:35,273 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4453 transitions. [2023-11-23 20:32:35,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:32:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4453 transitions. [2023-11-23 20:32:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 20:32:35,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:35,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:35,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:32:35,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:35,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:35,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1919601585, now seen corresponding path program 1 times [2023-11-23 20:32:35,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:35,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527322345] [2023-11-23 20:32:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:35,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:35,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527322345] [2023-11-23 20:32:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527322345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68528210] [2023-11-23 20:32:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:35,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:35,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:35,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:35,685 INFO L87 Difference]: Start difference. First operand 3057 states and 4453 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:32:36,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:39,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:41,123 INFO L93 Difference]: Finished difference Result 3167 states and 4566 transitions. [2023-11-23 20:32:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:41,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2023-11-23 20:32:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:41,156 INFO L225 Difference]: With dead ends: 3167 [2023-11-23 20:32:41,156 INFO L226 Difference]: Without dead ends: 3149 [2023-11-23 20:32:41,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:41,161 INFO L413 NwaCegarLoop]: 2190 mSDtfsCounter, 2207 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:41,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 2370 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-11-23 20:32:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2023-11-23 20:32:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3145. [2023-11-23 20:32:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 1930 states have (on average 1.3134715025906736) internal successors, (2535), 1987 states have internal predecessors, (2535), 966 states have call successors, (966), 256 states have call predecessors, (966), 248 states have return successors, (1034), 919 states have call predecessors, (1034), 955 states have call successors, (1034) [2023-11-23 20:32:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 4535 transitions. [2023-11-23 20:32:41,461 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 4535 transitions. Word has length 26 [2023-11-23 20:32:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:41,461 INFO L495 AbstractCegarLoop]: Abstraction has 3145 states and 4535 transitions. [2023-11-23 20:32:41,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:32:41,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 4535 transitions. [2023-11-23 20:32:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 20:32:41,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:41,468 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 20:32:41,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:32:41,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:41,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash -360396695, now seen corresponding path program 1 times [2023-11-23 20:32:41,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:41,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857235545] [2023-11-23 20:32:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:41,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:41,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857235545] [2023-11-23 20:32:41,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857235545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:41,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:41,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:32:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423930901] [2023-11-23 20:32:41,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:41,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:41,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:41,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:41,874 INFO L87 Difference]: Start difference. First operand 3145 states and 4535 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)