./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--input--mousedev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:49,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:49,854 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:17:49,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:49,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:49,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:49,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:49,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:49,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:49,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:49,889 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:49,890 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:49,891 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:49,895 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:49,896 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:49,896 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:49,897 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:49,897 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:49,897 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:49,898 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:49,898 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:49,899 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:49,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:49,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:49,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:49,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:49,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:49,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:49,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:49,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:49,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:49,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:49,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:49,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:49,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:49,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:49,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:49,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:49,907 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:49,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:49,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:49,908 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:49,908 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:49,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:49,909 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_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2023-11-23 21:17:50,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:50,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:50,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:50,213 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:50,214 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:50,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2023-11-23 21:17:53,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:54,062 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:54,063 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2023-11-23 21:17:54,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/data/989d0b472/b4ed6b405a0d435890eb0c78a0993162/FLAG73e0db42e [2023-11-23 21:17:54,127 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/data/989d0b472/b4ed6b405a0d435890eb0c78a0993162 [2023-11-23 21:17:54,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:54,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:54,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:54,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:54,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:54,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:54" (1/1) ... [2023-11-23 21:17:54,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cd6107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:54, skipping insertion in model container [2023-11-23 21:17:54,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:54" (1/1) ... [2023-11-23 21:17:54,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:56,038 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_b7902954-1721-4ef1-80f3-f2a33b201975/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2023-11-23 21:17:56,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:56,271 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:56,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3394] [2023-11-23 21:17:56,403 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3396] [2023-11-23 21:17:56,405 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"); [3406] [2023-11-23 21:17:56,405 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)); [3413] [2023-11-23 21:17:56,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [3604] [2023-11-23 21:17:56,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [3607] [2023-11-23 21:17:56,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (val)); [3609] [2023-11-23 21:17:56,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [3614] [2023-11-23 21:17:56,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [3617] [2023-11-23 21:17:56,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [3619] [2023-11-23 21:17:56,425 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [3624] [2023-11-23 21:17:56,425 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [3627] [2023-11-23 21:17:56,426 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [3629] [2023-11-23 21:17:56,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [3634] [2023-11-23 21:17:56,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [3637] [2023-11-23 21:17:56,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (val)); [3639] [2023-11-23 21:17:56,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [3657] [2023-11-23 21:17:56,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [3660] [2023-11-23 21:17:56,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (- val)); [3662] [2023-11-23 21:17:56,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [3667] [2023-11-23 21:17:56,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [3670] [2023-11-23 21:17:56,433 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [3672] [2023-11-23 21:17:56,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [3677] [2023-11-23 21:17:56,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [3680] [2023-11-23 21:17:56,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [3682] [2023-11-23 21:17:56,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [3687] [2023-11-23 21:17:56,436 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [3690] [2023-11-23 21:17:56,437 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (- val)); [3692] [2023-11-23 21:17:56,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3760] [2023-11-23 21:17:56,441 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3767] [2023-11-23 21:17:56,556 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (buffer + (unsigned long )i), "i" (1UL)); [4719-4720] [2023-11-23 21:17:56,623 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_b7902954-1721-4ef1-80f3-f2a33b201975/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2023-11-23 21:17:56,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:56,818 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:17:56,825 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:56,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56 WrapperNode [2023-11-23 21:17:56,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:56,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:56,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:56,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:56,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:56,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,083 INFO L138 Inliner]: procedures = 259, calls = 1116, calls flagged for inlining = 115, calls inlined = 111, statements flattened = 2846 [2023-11-23 21:17:57,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:57,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:57,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:57,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:57,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:57,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:57,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:57,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:57,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (1/1) ... [2023-11-23 21:17:57,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:57,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:57,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:57,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7902954-1721-4ef1-80f3-f2a33b201975/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_name [2023-11-23 21:17:57,489 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_name [2023-11-23 21:17:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:17:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:17:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:17:57,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:17:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_create [2023-11-23 21:17:57,490 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_create [2023-11-23 21:17:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:17:57,491 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:17:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-11-23 21:17:57,491 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-11-23 21:17:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:17:57,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:17:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:17:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:17:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_event [2023-11-23 21:17:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_event [2023-11-23 21:17:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:17:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:17:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_packet [2023-11-23 21:17:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_packet [2023-11-23 21:17:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 21:17:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 21:17:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:17:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:17:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:17:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:17:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 21:17:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 21:17:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_notify_readers [2023-11-23 21:17:57,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_notify_readers [2023-11-23 21:17:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:17:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:17:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:17:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:17:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:17:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_close_device [2023-11-23 21:17:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_close_device [2023-11-23 21:17:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:17:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_fasync [2023-11-23 21:17:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_fasync [2023-11-23 21:17:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2023-11-23 21:17:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2023-11-23 21:17:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mousedev [2023-11-23 21:17:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mousedev [2023-11-23 21:17:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_poll [2023-11-23 21:17:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_poll [2023-11-23 21:17:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:17:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:17:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-11-23 21:17:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-11-23 21:17:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_min [2023-11-23 21:17:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_min [2023-11-23 21:17:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:17:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_destroy [2023-11-23 21:17:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_destroy [2023-11-23 21:17:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:17:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:17:57,504 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:17:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2023-11-23 21:17:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2023-11-23 21:17:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2023-11-23 21:17:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2023-11-23 21:17:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-23 21:17:57,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-23 21:17:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_limit_delta [2023-11-23 21:17:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_limit_delta [2023-11-23 21:17:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:17:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:17:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:17:57,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:17:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:17:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:17:57,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:17:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:17:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:17:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_key_event [2023-11-23 21:17:57,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_key_event [2023-11-23 21:17:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:17:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:17:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2023-11-23 21:17:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2023-11-23 21:17:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:17:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:17:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-11-23 21:17:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-11-23 21:17:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:17:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:17:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure kill_fasync [2023-11-23 21:17:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_fasync [2023-11-23 21:17:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:17:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure input_close_device [2023-11-23 21:17:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure input_close_device [2023-11-23 21:17:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 21:17:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 21:17:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2023-11-23 21:17:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2023-11-23 21:17:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:17:57,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:17:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_new_minor [2023-11-23 21:17:57,514 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_new_minor [2023-11-23 21:17:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:17:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:17:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:17:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_write [2023-11-23 21:17:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_write [2023-11-23 21:17:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:17:57,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:17:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_handle [2023-11-23 21:17:57,517 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_handle [2023-11-23 21:17:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:17:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-11-23 21:17:57,518 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-11-23 21:17:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:17:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mousedev [2023-11-23 21:17:57,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mousedev [2023-11-23 21:17:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 21:17:57,522 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 21:17:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_detach_client [2023-11-23 21:17:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_detach_client [2023-11-23 21:17:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_max [2023-11-23 21:17:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_max [2023-11-23 21:17:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 21:17:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 21:17:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 21:17:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 21:17:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_minor [2023-11-23 21:17:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_minor [2023-11-23 21:17:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_cleanup [2023-11-23 21:17:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_cleanup [2023-11-23 21:17:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_open_device [2023-11-23 21:17:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_open_device [2023-11-23 21:17:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_disconnect [2023-11-23 21:17:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_disconnect [2023-11-23 21:17:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_mousedev [2023-11-23 21:17:57,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_mousedev [2023-11-23 21:17:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:17:57,533 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:17:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:17:57,533 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:17:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:17:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:57,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:57,534 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:17:57,534 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:17:58,164 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:58,169 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:58,722 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:18:03,667 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:05,310 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:05,311 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:18:05,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:05 BoogieIcfgContainer [2023-11-23 21:18:05,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:05,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:05,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:05,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:05,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:54" (1/3) ... [2023-11-23 21:18:05,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cccfb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:05, skipping insertion in model container [2023-11-23 21:18:05,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:56" (2/3) ... [2023-11-23 21:18:05,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cccfb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:05, skipping insertion in model container [2023-11-23 21:18:05,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:05" (3/3) ... [2023-11-23 21:18:05,326 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2023-11-23 21:18:05,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:05,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:18:05,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:05,436 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;@5b0f4ea2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:05,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:18:05,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 677 states, 410 states have (on average 1.3585365853658538) internal successors, (557), 442 states have internal predecessors, (557), 201 states have call successors, (201), 65 states have call predecessors, (201), 64 states have return successors, (197), 194 states have call predecessors, (197), 197 states have call successors, (197) [2023-11-23 21:18:05,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-23 21:18:05,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:05,472 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:05,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:05,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1328685327, now seen corresponding path program 1 times [2023-11-23 21:18:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:05,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796502568] [2023-11-23 21:18:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:05,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-11-23 21:18:06,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:06,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796502568] [2023-11-23 21:18:06,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796502568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:06,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:06,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:06,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775878058] [2023-11-23 21:18:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:06,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:06,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:07,040 INFO L87 Difference]: Start difference. First operand has 677 states, 410 states have (on average 1.3585365853658538) internal successors, (557), 442 states have internal predecessors, (557), 201 states have call successors, (201), 65 states have call predecessors, (201), 64 states have return successors, (197), 194 states have call predecessors, (197), 197 states have call successors, (197) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:18:09,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:10,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:13,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:14,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:16,436 INFO L93 Difference]: Finished difference Result 1758 states and 2514 transitions. [2023-11-23 21:18:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 192 [2023-11-23 21:18:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:16,481 INFO L225 Difference]: With dead ends: 1758 [2023-11-23 21:18:16,482 INFO L226 Difference]: Without dead ends: 1107 [2023-11-23 21:18:16,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:16,505 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 648 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:16,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1606 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 286 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2023-11-23 21:18:16,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2023-11-23 21:18:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1092. [2023-11-23 21:18:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 665 states have (on average 1.3353383458646617) internal successors, (888), 704 states have internal predecessors, (888), 313 states have call successors, (313), 114 states have call predecessors, (313), 113 states have return successors, (306), 301 states have call predecessors, (306), 306 states have call successors, (306) [2023-11-23 21:18:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1507 transitions. [2023-11-23 21:18:16,775 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1507 transitions. Word has length 192 [2023-11-23 21:18:16,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:16,779 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1507 transitions. [2023-11-23 21:18:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:18:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1507 transitions. [2023-11-23 21:18:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-23 21:18:16,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:16,801 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:16,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:18:16,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:16,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1768543234, now seen corresponding path program 1 times [2023-11-23 21:18:16,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:16,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889530935] [2023-11-23 21:18:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:16,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-11-23 21:18:18,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889530935] [2023-11-23 21:18:18,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889530935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:18,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:18,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:18,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455794641] [2023-11-23 21:18:18,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:18,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:18,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:18,073 INFO L87 Difference]: Start difference. First operand 1092 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:18:20,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:22,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:24,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:27,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:28,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:30,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:33,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:33,670 INFO L93 Difference]: Finished difference Result 3071 states and 4228 transitions. [2023-11-23 21:18:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:33,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 193 [2023-11-23 21:18:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:33,698 INFO L225 Difference]: With dead ends: 3071 [2023-11-23 21:18:33,698 INFO L226 Difference]: Without dead ends: 2021 [2023-11-23 21:18:33,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:33,707 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 852 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:33,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1894 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 321 Invalid, 5 Unknown, 0 Unchecked, 15.4s Time] [2023-11-23 21:18:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2023-11-23 21:18:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2016. [2023-11-23 21:18:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1234 states have (on average 1.3363047001620745) internal successors, (1649), 1301 states have internal predecessors, (1649), 564 states have call successors, (564), 218 states have call predecessors, (564), 217 states have return successors, (557), 548 states have call predecessors, (557), 557 states have call successors, (557) [2023-11-23 21:18:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2770 transitions. [2023-11-23 21:18:33,870 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2770 transitions. Word has length 193 [2023-11-23 21:18:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:33,872 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2770 transitions. [2023-11-23 21:18:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 21:18:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2770 transitions. [2023-11-23 21:18:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-23 21:18:33,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:33,877 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:33,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:18:33,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:33,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash -166440908, now seen corresponding path program 1 times [2023-11-23 21:18:33,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:33,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439935165] [2023-11-23 21:18:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:33,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-11-23 21:18:34,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:34,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439935165] [2023-11-23 21:18:34,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439935165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:34,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:34,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77769247] [2023-11-23 21:18:34,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:34,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:34,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:34,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:34,694 INFO L87 Difference]: Start difference. First operand 2016 states and 2770 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-23 21:18:36,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:38,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:41,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:18:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:43,535 INFO L93 Difference]: Finished difference Result 5008 states and 6850 transitions. [2023-11-23 21:18:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:43,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 213 [2023-11-23 21:18:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:43,563 INFO L225 Difference]: With dead ends: 5008 [2023-11-23 21:18:43,563 INFO L226 Difference]: Without dead ends: 3042 [2023-11-23 21:18:43,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:43,577 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 656 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:43,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1503 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 287 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2023-11-23 21:18:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2023-11-23 21:18:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3017. [2023-11-23 21:18:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 1844 states have (on average 1.3378524945770065) internal successors, (2467), 1945 states have internal predecessors, (2467), 824 states have call successors, (824), 359 states have call predecessors, (824), 348 states have return successors, (825), 786 states have call predecessors, (825), 817 states have call successors, (825) [2023-11-23 21:18:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 4116 transitions. [2023-11-23 21:18:43,836 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 4116 transitions. Word has length 213 [2023-11-23 21:18:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:43,838 INFO L495 AbstractCegarLoop]: Abstraction has 3017 states and 4116 transitions. [2023-11-23 21:18:43,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-23 21:18:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 4116 transitions. [2023-11-23 21:18:43,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-23 21:18:43,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:43,843 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:43,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:18:43,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:43,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2119089346, now seen corresponding path program 1 times [2023-11-23 21:18:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:43,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105149926] [2023-11-23 21:18:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-11-23 21:18:45,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105149926] [2023-11-23 21:18:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105149926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:45,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:18:45,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814124233] [2023-11-23 21:18:45,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:45,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:18:45,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:18:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:18:45,093 INFO L87 Difference]: Start difference. First operand 3017 states and 4116 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24)