./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91 --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 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:00,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:00,792 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:16:00,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:00,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:00,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:00,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:00,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:00,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:00,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:00,858 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:00,859 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:00,860 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:00,860 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:00,861 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:00,861 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:00,861 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:00,862 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:00,862 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:00,863 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:00,863 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:00,864 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:00,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:00,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:00,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:00,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:00,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:00,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:00,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:00,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:00,870 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:00,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:00,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:00,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:00,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:00,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:00,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:00,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:00,874 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:00,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:00,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:00,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:00,876 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:00,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:00,877 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_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36ffbabf76f0a0e87302d8b80308134217d4fdef380ae154dfcdec710817c6e2 [2023-11-24 23:16:01,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:01,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:01,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:01,224 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:01,224 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:01,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-11-24 23:16:04,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:05,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:05,027 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-11-24 23:16:05,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/data/b880cfa3d/0751ef2caa5e4829ba247667e8a2449e/FLAG54edfa515 [2023-11-24 23:16:05,105 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/data/b880cfa3d/0751ef2caa5e4829ba247667e8a2449e [2023-11-24 23:16:05,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:05,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:05,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:05,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:05,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:05,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:05" (1/1) ... [2023-11-24 23:16:05,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1888bf8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:05, skipping insertion in model container [2023-11-24 23:16:05,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:05" (1/1) ... [2023-11-24 23:16:05,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:05,983 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2023-11-24 23:16:05,983 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2023-11-24 23:16:06,518 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_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2023-11-24 23:16:07,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:07,773 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:07,916 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3834] [2023-11-24 23:16:07,917 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3835-3836] [2023-11-24 23:16:07,919 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"); [3918] [2023-11-24 23:16:07,921 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3925] [2023-11-24 23:16:07,922 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, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3933-3934] [2023-11-24 23:16:07,923 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)); [3948-3949] [2023-11-24 23:16:07,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3980] [2023-11-24 23:16:07,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3983] [2023-11-24 23:16:07,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3986] [2023-11-24 23:16:07,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3989] [2023-11-24 23:16:07,928 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; cmpxchgb %2,%1": "=a" (__ret), "+m" (*__ptr): "q" (__new), "0" (__old): "memory"); [4038-4039] [2023-11-24 23:16:07,929 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; cmpxchgw %2,%1": "=a" (__ret), "+m" (*__ptr___0): "r" (__new), "0" (__old): "memory"); [4043-4044] [2023-11-24 23:16:07,929 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; cmpxchgl %2,%1": "=a" (__ret), "+m" (*__ptr___1): "r" (__new), "0" (__old): "memory"); [4048-4049] [2023-11-24 23:16:07,930 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; cmpxchgq %2,%1": "=a" (__ret), "+m" (*__ptr___2): "r" (__new), "0" (__old): "memory"); [4053-4054] [2023-11-24 23:16:07,937 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_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[119274,119287] [2023-11-24 23:16:08,034 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___0->state): : "memory", "cc"); [5875-5876] [2023-11-24 23:16:08,034 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___1->state): : "memory", "cc"); [5880-5881] [2023-11-24 23:16:08,035 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___2->state): : "memory", "cc"); [5885-5886] [2023-11-24 23:16:08,035 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___3->state): : "memory", "cc"); [5890-5891] [2023-11-24 23:16:08,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:08,389 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:08,390 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:08,390 WARN L675 CHandler]: The function __cmpxchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:08,391 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:08,391 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:08,399 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:08,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08 WrapperNode [2023-11-24 23:16:08,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:08,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:08,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:08,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:08,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:08,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:08,837 INFO L138 Inliner]: procedures = 264, calls = 3816, calls flagged for inlining = 133, calls inlined = 113, statements flattened = 6927 [2023-11-24 23:16:08,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:08,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:08,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:08,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:08,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:08,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:08,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:08,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:09,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:09,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:09,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:09,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:09,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:09,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:09,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:09,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:09,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:09,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:09,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:09,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:09,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b16e1276-80d9-43b1-beb9-45d1e1ec6e57/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:09,358 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2023-11-24 23:16:09,359 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2023-11-24 23:16:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2023-11-24 23:16:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2023-11-24 23:16:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2023-11-24 23:16:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-24 23:16:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-24 23:16:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-24 23:16:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-24 23:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-24 23:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-24 23:16:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-24 23:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-24 23:16:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-24 23:16:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2023-11-24 23:16:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2023-11-24 23:16:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-24 23:16:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-24 23:16:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-24 23:16:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-24 23:16:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:16:09,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:16:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-24 23:16:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-24 23:16:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2023-11-24 23:16:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2023-11-24 23:16:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2023-11-24 23:16:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2023-11-24 23:16:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-24 23:16:09,423 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-24 23:16:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-24 23:16:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-24 23:16:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-24 23:16:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-24 23:16:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-24 23:16:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-24 23:16:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-24 23:16:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-24 23:16:09,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:16:09,424 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:16:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:16:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:16:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-24 23:16:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-24 23:16:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2023-11-24 23:16:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2023-11-24 23:16:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2023-11-24 23:16:09,425 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2023-11-24 23:16:09,425 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2023-11-24 23:16:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2023-11-24 23:16:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-24 23:16:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-24 23:16:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-24 23:16:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:16:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2023-11-24 23:16:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2023-11-24 23:16:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-24 23:16:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-24 23:16:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:16:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2023-11-24 23:16:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2023-11-24 23:16:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2023-11-24 23:16:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2023-11-24 23:16:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-24 23:16:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-24 23:16:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-24 23:16:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-24 23:16:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:16:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-24 23:16:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-24 23:16:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-24 23:16:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-24 23:16:09,428 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-11-24 23:16:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-11-24 23:16:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-24 23:16:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-24 23:16:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2023-11-24 23:16:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2023-11-24 23:16:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-24 23:16:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-24 23:16:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2023-11-24 23:16:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2023-11-24 23:16:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2023-11-24 23:16:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2023-11-24 23:16:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-24 23:16:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-24 23:16:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:16:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-24 23:16:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-24 23:16:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-24 23:16:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-24 23:16:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2023-11-24 23:16:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2023-11-24 23:16:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-24 23:16:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-24 23:16:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:16:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-11-24 23:16:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-11-24 23:16:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:16:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2023-11-24 23:16:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2023-11-24 23:16:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-24 23:16:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-24 23:16:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-24 23:16:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-24 23:16:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-24 23:16:09,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-24 23:16:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2023-11-24 23:16:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2023-11-24 23:16:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2023-11-24 23:16:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2023-11-24 23:16:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-24 23:16:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-24 23:16:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-24 23:16:09,433 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-24 23:16:09,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-24 23:16:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-24 23:16:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2023-11-24 23:16:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2023-11-24 23:16:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2023-11-24 23:16:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2023-11-24 23:16:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-24 23:16:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-24 23:16:09,434 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-24 23:16:09,434 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-24 23:16:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:16:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-24 23:16:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-24 23:16:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2023-11-24 23:16:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2023-11-24 23:16:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-24 23:16:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-24 23:16:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2023-11-24 23:16:09,435 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2023-11-24 23:16:09,435 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2023-11-24 23:16:09,436 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2023-11-24 23:16:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-24 23:16:09,436 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-24 23:16:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:16:09,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:16:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2023-11-24 23:16:09,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2023-11-24 23:16:09,436 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2023-11-24 23:16:09,436 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2023-11-24 23:16:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:16:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:16:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-24 23:16:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-24 23:16:09,437 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-24 23:16:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-24 23:16:09,437 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-24 23:16:09,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-24 23:16:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-24 23:16:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_dtr_rts [2023-11-24 23:16:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_dtr_rts [2023-11-24 23:16:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-24 23:16:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-24 23:16:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-24 23:16:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-24 23:16:09,438 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2023-11-24 23:16:09,438 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2023-11-24 23:16:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2023-11-24 23:16:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2023-11-24 23:16:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2023-11-24 23:16:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2023-11-24 23:16:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2023-11-24 23:16:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2023-11-24 23:16:09,439 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-24 23:16:09,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-24 23:16:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-24 23:16:09,440 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-24 23:16:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-24 23:16:09,440 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-24 23:16:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-24 23:16:09,440 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-24 23:16:09,440 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-24 23:16:09,440 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-24 23:16:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2023-11-24 23:16:09,441 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2023-11-24 23:16:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:09,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-11-24 23:16:09,441 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-11-24 23:16:09,441 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-24 23:16:09,441 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-24 23:16:10,252 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:10,257 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:10,553 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-24 23:16:22,598 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:24,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:24,423 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:16:24,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:24 BoogieIcfgContainer [2023-11-24 23:16:24,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:24,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:24,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:24,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:24,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:05" (1/3) ... [2023-11-24 23:16:24,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aae53d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:24, skipping insertion in model container [2023-11-24 23:16:24,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08" (2/3) ... [2023-11-24 23:16:24,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aae53d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:24, skipping insertion in model container [2023-11-24 23:16:24,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:24" (3/3) ... [2023-11-24 23:16:24,441 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2023-11-24 23:16:24,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:24,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:16:24,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:24,580 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;@5dcab84f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:24,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:16:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 1235 states, 776 states have (on average 1.347938144329897) internal successors, (1046), 791 states have internal predecessors, (1046), 373 states have call successors, (373), 85 states have call predecessors, (373), 84 states have return successors, (365), 365 states have call predecessors, (365), 365 states have call successors, (365) [2023-11-24 23:16:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-24 23:16:24,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:24,641 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:24,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:24,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1274201999, now seen corresponding path program 1 times [2023-11-24 23:16:24,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:24,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328644944] [2023-11-24 23:16:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-24 23:16:25,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:25,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328644944] [2023-11-24 23:16:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328644944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:25,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:25,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666480999] [2023-11-24 23:16:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:25,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:25,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:25,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:25,875 INFO L87 Difference]: Start difference. First operand has 1235 states, 776 states have (on average 1.347938144329897) internal successors, (1046), 791 states have internal predecessors, (1046), 373 states have call successors, (373), 85 states have call predecessors, (373), 84 states have return successors, (365), 365 states have call predecessors, (365), 365 states have call successors, (365) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-24 23:16:28,748 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 [] [2023-11-24 23:16:33,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:35,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:37,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:38,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:38,213 INFO L93 Difference]: Finished difference Result 3284 states and 4767 transitions. [2023-11-24 23:16:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2023-11-24 23:16:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:38,257 INFO L225 Difference]: With dead ends: 3284 [2023-11-24 23:16:38,257 INFO L226 Difference]: Without dead ends: 2051 [2023-11-24 23:16:38,268 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 [2023-11-24 23:16:38,272 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1241 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:38,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 3059 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 474 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2023-11-24 23:16:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2023-11-24 23:16:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 2047. [2023-11-24 23:16:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 1289 states have (on average 1.3281613653995346) internal successors, (1712), 1299 states have internal predecessors, (1712), 610 states have call successors, (610), 148 states have call predecessors, (610), 147 states have return successors, (609), 608 states have call predecessors, (609), 609 states have call successors, (609) [2023-11-24 23:16:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 2931 transitions. [2023-11-24 23:16:38,499 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 2931 transitions. Word has length 122 [2023-11-24 23:16:38,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:38,502 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 2931 transitions. [2023-11-24 23:16:38,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-24 23:16:38,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 2931 transitions. [2023-11-24 23:16:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-24 23:16:38,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:38,518 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:38,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:16:38,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:38,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:38,520 INFO L85 PathProgramCache]: Analyzing trace with hash 84572104, now seen corresponding path program 1 times [2023-11-24 23:16:38,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:38,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229010754] [2023-11-24 23:16:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:38,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-24 23:16:39,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:39,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229010754] [2023-11-24 23:16:39,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229010754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:39,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:39,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:39,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948852193] [2023-11-24 23:16:39,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:39,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:39,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:39,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:39,240 INFO L87 Difference]: Start difference. First operand 2047 states and 2931 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-24 23:16:41,875 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 [] [2023-11-24 23:16:44,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:47,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:49,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:50,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:53,007 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 [] [2023-11-24 23:16:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:54,609 INFO L93 Difference]: Finished difference Result 5868 states and 8370 transitions. [2023-11-24 23:16:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:54,610 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), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 123 [2023-11-24 23:16:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:54,648 INFO L225 Difference]: With dead ends: 5868 [2023-11-24 23:16:54,648 INFO L226 Difference]: Without dead ends: 3852 [2023-11-24 23:16:54,658 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 [2023-11-24 23:16:54,664 INFO L413 NwaCegarLoop]: 2052 mSDtfsCounter, 1577 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:54,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3552 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 453 Invalid, 5 Unknown, 0 Unchecked, 15.1s Time] [2023-11-24 23:16:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2023-11-24 23:16:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3849. [2023-11-24 23:16:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2430 states have (on average 1.3292181069958848) internal successors, (3230), 2449 states have internal predecessors, (3230), 1126 states have call successors, (1126), 293 states have call predecessors, (1126), 292 states have return successors, (1125), 1124 states have call predecessors, (1125), 1125 states have call successors, (1125) [2023-11-24 23:16:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5481 transitions. [2023-11-24 23:16:54,915 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5481 transitions. Word has length 123 [2023-11-24 23:16:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:54,917 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 5481 transitions. [2023-11-24 23:16:54,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-24 23:16:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5481 transitions. [2023-11-24 23:16:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-24 23:16:54,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:54,927 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:54,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:16:54,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:54,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1588309876, now seen corresponding path program 1 times [2023-11-24 23:16:54,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:54,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391809568] [2023-11-24 23:16:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms