./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5 --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 bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:48:56,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:48:56,390 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:48:56,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:48:56,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:48:56,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:48:56,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:48:56,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:48:56,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:48:56,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:48:56,446 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:48:56,446 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:48:56,447 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:48:56,448 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:48:56,449 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:48:56,449 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:48:56,450 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:48:56,450 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:48:56,451 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:48:56,451 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:48:56,452 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:48:56,453 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:48:56,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:48:56,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:48:56,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:48:56,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:48:56,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:48:56,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:48:56,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:48:56,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:48:56,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:48:56,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:48:56,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:48:56,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:48:56,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:56,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:48:56,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:48:56,461 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:48:56,462 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:48:56,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:48:56,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:48:56,463 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:48:56,463 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:48:56,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:48:56,464 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_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2023-11-21 19:48:56,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:48:56,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:48:56,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:48:56,882 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:48:56,882 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:48:56,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2023-11-21 19:49:00,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:49:00,780 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:49:00,781 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2023-11-21 19:49:00,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/data/c27092b4b/4c96cc5343a04c5c9f243b709112ac23/FLAG3e47d56cd [2023-11-21 19:49:00,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/data/c27092b4b/4c96cc5343a04c5c9f243b709112ac23 [2023-11-21 19:49:00,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:49:00,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:49:00,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:00,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:49:00,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:49:00,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:00" (1/1) ... [2023-11-21 19:49:00,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ea0ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:00, skipping insertion in model container [2023-11-21 19:49:00,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:00" (1/1) ... [2023-11-21 19:49:01,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:49:04,313 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_d8699551-a239-48ae-9a20-4b90b893731e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2023-11-21 19:49:04,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:04,632 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:49:04,744 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3943] [2023-11-21 19:49:04,746 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3945] [2023-11-21 19:49:04,747 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"); [3955] [2023-11-21 19:49:04,749 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): "er" (i): "memory"); [3999-4000] [2023-11-21 19:49:04,750 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"); [4011-4012] [2023-11-21 19:49:04,750 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"); [4015-4016] [2023-11-21 19:49:04,751 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"); [4019-4020] [2023-11-21 19:49:04,751 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"); [4023-4024] [2023-11-21 19:49:05,140 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)); [8320] [2023-11-21 19:49:05,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8327] [2023-11-21 19:49:05,141 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, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [8336-8337] [2023-11-21 19:49:05,142 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"); [8353-8354] [2023-11-21 19:49:05,143 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)); [8368-8369] [2023-11-21 19:49:05,144 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [8383] [2023-11-21 19:49:05,144 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [8386] [2023-11-21 19:49:05,145 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [8389] [2023-11-21 19:49:05,145 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [8392] [2023-11-21 19:49:05,248 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_d8699551-a239-48ae-9a20-4b90b893731e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2023-11-21 19:49:05,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:05,568 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:05,568 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:05,569 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:49:05,577 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:49:05,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05 WrapperNode [2023-11-21 19:49:05,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:05,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:05,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:49:05,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:49:05,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:05,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,014 INFO L138 Inliner]: procedures = 481, calls = 4190, calls flagged for inlining = 214, calls inlined = 207, statements flattened = 8236 [2023-11-21 19:49:06,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:06,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:49:06,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:49:06,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:49:06,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:49:06,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:49:06,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:49:06,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:49:06,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (1/1) ... [2023-11-21 19:49:06,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:06,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:49:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8699551-a239-48ae-9a20-4b90b893731e/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:49:06,691 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2023-11-21 19:49:06,692 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2023-11-21 19:49:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2023-11-21 19:49:06,692 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2023-11-21 19:49:06,692 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-21 19:49:06,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-21 19:49:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-21 19:49:06,693 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-21 19:49:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-21 19:49:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-21 19:49:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2023-11-21 19:49:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2023-11-21 19:49:06,697 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2023-11-21 19:49:06,697 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2023-11-21 19:49:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-11-21 19:49:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-11-21 19:49:06,698 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2023-11-21 19:49:06,698 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2023-11-21 19:49:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 19:49:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 19:49:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2023-11-21 19:49:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2023-11-21 19:49:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2023-11-21 19:49:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2023-11-21 19:49:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2023-11-21 19:49:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2023-11-21 19:49:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2023-11-21 19:49:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2023-11-21 19:49:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-21 19:49:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-21 19:49:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2023-11-21 19:49:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2023-11-21 19:49:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister_drivers [2023-11-21 19:49:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister_drivers [2023-11-21 19:49:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2023-11-21 19:49:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2023-11-21 19:49:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-21 19:49:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-21 19:49:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_work [2023-11-21 19:49:06,703 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_work [2023-11-21 19:49:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-21 19:49:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-21 19:49:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2023-11-21 19:49:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2023-11-21 19:49:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2023-11-21 19:49:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2023-11-21 19:49:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2023-11-21 19:49:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2023-11-21 19:49:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2023-11-21 19:49:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2023-11-21 19:49:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-21 19:49:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-21 19:49:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 19:49:06,707 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 19:49:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-21 19:49:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2023-11-21 19:49:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2023-11-21 19:49:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2023-11-21 19:49:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2023-11-21 19:49:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-21 19:49:06,708 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2023-11-21 19:49:06,708 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2023-11-21 19:49:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-21 19:49:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-21 19:49:06,709 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 19:49:06,709 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 19:49:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2023-11-21 19:49:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2023-11-21 19:49:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:49:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-21 19:49:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-21 19:49:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-11-21 19:49:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-11-21 19:49:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2023-11-21 19:49:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2023-11-21 19:49:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-21 19:49:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-21 19:49:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2023-11-21 19:49:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2023-11-21 19:49:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-11-21 19:49:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-11-21 19:49:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-21 19:49:06,712 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-21 19:49:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 19:49:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2023-11-21 19:49:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2023-11-21 19:49:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-21 19:49:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-21 19:49:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:49:06,714 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-21 19:49:06,714 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-21 19:49:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2023-11-21 19:49:06,715 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2023-11-21 19:49:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2023-11-21 19:49:06,715 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2023-11-21 19:49:06,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-11-21 19:49:06,716 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-11-21 19:49:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:49:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-21 19:49:06,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-21 19:49:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2023-11-21 19:49:06,717 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2023-11-21 19:49:06,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-21 19:49:06,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2023-11-21 19:49:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-21 19:49:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-21 19:49:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-21 19:49:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-21 19:49:06,718 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2023-11-21 19:49:06,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2023-11-21 19:49:06,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-21 19:49:06,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-21 19:49:06,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:49:06,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:49:06,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:49:06,720 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-21 19:49:06,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:49:06,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:49:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-21 19:49:06,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-21 19:49:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-11-21 19:49:06,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-11-21 19:49:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-21 19:49:06,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-21 19:49:06,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2023-11-21 19:49:06,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2023-11-21 19:49:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-21 19:49:06,725 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-21 19:49:06,727 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2023-11-21 19:49:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2023-11-21 19:49:06,728 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-21 19:49:06,728 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-21 19:49:06,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:49:06,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:49:06,730 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2023-11-21 19:49:06,731 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2023-11-21 19:49:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-21 19:49:06,737 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-21 19:49:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2023-11-21 19:49:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2023-11-21 19:49:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2023-11-21 19:49:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2023-11-21 19:49:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-21 19:49:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-21 19:49:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-21 19:49:06,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-21 19:49:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2023-11-21 19:49:06,740 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2023-11-21 19:49:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2023-11-21 19:49:06,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2023-11-21 19:49:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 19:49:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:49:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 19:49:06,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 19:49:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2023-11-21 19:49:06,741 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2023-11-21 19:49:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2023-11-21 19:49:06,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2023-11-21 19:49:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-21 19:49:06,742 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-21 19:49:06,742 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-11-21 19:49:06,742 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-11-21 19:49:06,742 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-21 19:49:06,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-21 19:49:06,742 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-21 19:49:06,742 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-21 19:49:06,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 19:49:06,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 19:49:06,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2023-11-21 19:49:06,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2023-11-21 19:49:06,743 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2023-11-21 19:49:06,743 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2023-11-21 19:49:06,743 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_msr_changed [2023-11-21 19:49:06,743 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_msr_changed [2023-11-21 19:49:06,744 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2023-11-21 19:49:06,744 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2023-11-21 19:49:06,744 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:49:06,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:49:06,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-21 19:49:06,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_disc_mutex_of_usb_serial [2023-11-21 19:49:06,744 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2023-11-21 19:49:06,745 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2023-11-21 19:49:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-21 19:49:06,745 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-21 19:49:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-21 19:49:06,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-21 19:49:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:49:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-21 19:49:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-21 19:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2023-11-21 19:49:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2023-11-21 19:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2023-11-21 19:49:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2023-11-21 19:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-21 19:49:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-21 19:49:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:49:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-21 19:49:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-21 19:49:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2023-11-21 19:49:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2023-11-21 19:49:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:49:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 19:49:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 19:49:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 19:49:06,748 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 19:49:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2023-11-21 19:49:06,748 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2023-11-21 19:49:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-21 19:49:06,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2023-11-21 19:49:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-21 19:49:06,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-21 19:49:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-21 19:49:06,749 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-21 19:49:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2023-11-21 19:49:06,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2023-11-21 19:49:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-21 19:49:06,749 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-21 19:49:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-21 19:49:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-21 19:49:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_softint [2023-11-21 19:49:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_softint [2023-11-21 19:49:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2023-11-21 19:49:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2023-11-21 19:49:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-21 19:49:06,750 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-21 19:49:06,751 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2023-11-21 19:49:06,751 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2023-11-21 19:49:06,751 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2023-11-21 19:49:06,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2023-11-21 19:49:06,751 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2023-11-21 19:49:06,751 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2023-11-21 19:49:06,751 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-11-21 19:49:06,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-11-21 19:49:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-21 19:49:06,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-21 19:49:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2023-11-21 19:49:06,752 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2023-11-21 19:49:06,752 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-21 19:49:06,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-21 19:49:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2023-11-21 19:49:06,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2023-11-21 19:49:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2023-11-21 19:49:06,753 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2023-11-21 19:49:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-21 19:49:06,753 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-21 19:49:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-21 19:49:06,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-21 19:49:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 19:49:06,754 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 19:49:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:49:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2023-11-21 19:49:06,754 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2023-11-21 19:49:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2023-11-21 19:49:06,754 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2023-11-21 19:49:06,755 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2023-11-21 19:49:06,759 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2023-11-21 19:49:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-21 19:49:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-21 19:49:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 19:49:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 19:49:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2023-11-21 19:49:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2023-11-21 19:49:06,760 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2023-11-21 19:49:06,760 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2023-11-21 19:49:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-21 19:49:06,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_disc_mutex_of_usb_serial [2023-11-21 19:49:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2023-11-21 19:49:06,763 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2023-11-21 19:49:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-21 19:49:06,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-21 19:49:06,763 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2023-11-21 19:49:06,763 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2023-11-21 19:49:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_handle_sysrq_char [2023-11-21 19:49:06,764 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_handle_sysrq_char [2023-11-21 19:49:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2023-11-21 19:49:06,764 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2023-11-21 19:49:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_table_lock [2023-11-21 19:49:06,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_table_lock [2023-11-21 19:49:06,764 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-21 19:49:06,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-21 19:49:06,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_table_lock [2023-11-21 19:49:06,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_table_lock [2023-11-21 19:49:06,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2023-11-21 19:49:06,765 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2023-11-21 19:49:06,765 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2023-11-21 19:49:06,765 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2023-11-21 19:49:06,765 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2023-11-21 19:49:06,765 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2023-11-21 19:49:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-21 19:49:06,766 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-21 19:49:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:49:06,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 19:49:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2023-11-21 19:49:06,766 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2023-11-21 19:49:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:49:06,767 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-11-21 19:49:06,767 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-11-21 19:49:07,883 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:49:07,893 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:49:08,535 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 19:49:22,084 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:49:24,123 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:49:24,123 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:49:24,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:24 BoogieIcfgContainer [2023-11-21 19:49:24,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:49:24,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:49:24,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:49:24,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:49:24,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:49:00" (1/3) ... [2023-11-21 19:49:24,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77683f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:24, skipping insertion in model container [2023-11-21 19:49:24,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:05" (2/3) ... [2023-11-21 19:49:24,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77683f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:24, skipping insertion in model container [2023-11-21 19:49:24,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:24" (3/3) ... [2023-11-21 19:49:24,140 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2023-11-21 19:49:24,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:49:24,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:49:24,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:49:24,286 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;@77fd6db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:49:24,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:49:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 2101 states, 1325 states have (on average 1.359245283018868) internal successors, (1801), 1391 states have internal predecessors, (1801), 636 states have call successors, (636), 139 states have call predecessors, (636), 138 states have return successors, (625), 611 states have call predecessors, (625), 625 states have call successors, (625) [2023-11-21 19:49:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-21 19:49:24,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:24,340 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:24,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:24,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:24,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1837745451, now seen corresponding path program 1 times [2023-11-21 19:49:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:24,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584884276] [2023-11-21 19:49:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:24,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2023-11-21 19:49:26,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584884276] [2023-11-21 19:49:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584884276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:26,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:26,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:49:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779778818] [2023-11-21 19:49:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:49:26,072 INFO L87 Difference]: Start difference. First operand has 2101 states, 1325 states have (on average 1.359245283018868) internal successors, (1801), 1391 states have internal predecessors, (1801), 636 states have call successors, (636), 139 states have call predecessors, (636), 138 states have return successors, (625), 611 states have call predecessors, (625), 625 states have call successors, (625) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-21 19:49:28,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:30,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:32,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:37,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:39,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:40,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:40,998 INFO L93 Difference]: Finished difference Result 6175 states and 9265 transitions. [2023-11-21 19:49:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:41,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 207 [2023-11-21 19:49:41,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:41,058 INFO L225 Difference]: With dead ends: 6175 [2023-11-21 19:49:41,058 INFO L226 Difference]: Without dead ends: 4094 [2023-11-21 19:49:41,080 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 [2023-11-21 19:49:41,083 INFO L413 NwaCegarLoop]: 2806 mSDtfsCounter, 3025 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3025 SdHoareTripleChecker+Valid, 5490 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:41,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3025 Valid, 5490 Invalid, 608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 600 Invalid, 4 Unknown, 0 Unchecked, 14.5s Time] [2023-11-21 19:49:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2023-11-21 19:49:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 4071. [2023-11-21 19:49:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4071 states, 2588 states have (on average 1.3504636785162287) internal successors, (3495), 2687 states have internal predecessors, (3495), 1208 states have call successors, (1208), 275 states have call predecessors, (1208), 274 states have return successors, (1276), 1170 states have call predecessors, (1276), 1199 states have call successors, (1276) [2023-11-21 19:49:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 5979 transitions. [2023-11-21 19:49:41,452 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 5979 transitions. Word has length 207 [2023-11-21 19:49:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:41,458 INFO L495 AbstractCegarLoop]: Abstraction has 4071 states and 5979 transitions. [2023-11-21 19:49:41,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-21 19:49:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 5979 transitions. [2023-11-21 19:49:41,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-21 19:49:41,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:41,470 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:41,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:49:41,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:41,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash 670859854, now seen corresponding path program 1 times [2023-11-21 19:49:41,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:41,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633952651] [2023-11-21 19:49:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:41,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2023-11-21 19:49:42,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:42,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633952651] [2023-11-21 19:49:42,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633952651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:42,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:42,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:49:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972596101] [2023-11-21 19:49:42,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:42,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:42,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:49:42,505 INFO L87 Difference]: Start difference. First operand 4071 states and 5979 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-21 19:49:44,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:46,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []