./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 9bd2c7ff 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_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/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_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ --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-9bd2c7f [2023-11-19 04:15:51,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:15:51,411 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:15:51,418 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:15:51,419 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:15:51,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:15:51,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:15:51,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:15:51,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:15:51,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:15:51,458 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:15:51,458 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:15:51,459 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:15:51,460 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:15:51,460 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:15:51,461 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:15:51,462 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:15:51,462 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:15:51,463 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:15:51,464 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:15:51,464 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:15:51,465 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:15:51,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:15:51,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:15:51,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:15:51,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:15:51,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:15:51,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:15:51,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:15:51,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:15:51,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:15:51,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:15:51,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:15:51,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:15:51,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:15:51,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:15:51,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:15:51,480 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:15:51,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:15:51,481 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:15:51,481 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:15:51,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:15:51,482 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_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2023-11-19 04:15:51,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:15:51,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:15:51,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:15:51,820 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:15:51,820 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:15:51,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/../../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 [2023-11-19 04:15:55,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:15:55,724 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:15:55,726 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/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 [2023-11-19 04:15:55,770 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/data/30c18b1a2/6deab3d62abf40cbafa18ac962305701/FLAG6c0d33991 [2023-11-19 04:15:55,785 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/data/30c18b1a2/6deab3d62abf40cbafa18ac962305701 [2023-11-19 04:15:55,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:15:55,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:15:55,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:15:55,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:15:55,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:15:55,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:55" (1/1) ... [2023-11-19 04:15:55,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379e35c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:55, skipping insertion in model container [2023-11-19 04:15:55,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:55" (1/1) ... [2023-11-19 04:15:55,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:15:57,567 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_82319dfd-a34d-46eb-865a-80902ebaccab/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] [2023-11-19 04:15:57,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:15:57,773 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:15:57,892 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3394] [2023-11-19 04:15:57,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3396] [2023-11-19 04:15:57,895 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] [2023-11-19 04:15:57,895 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] [2023-11-19 04:15:57,919 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [3604] [2023-11-19 04:15:57,920 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [3607] [2023-11-19 04:15:57,920 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (val)); [3609] [2023-11-19 04:15:57,921 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [3614] [2023-11-19 04:15:57,922 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [3617] [2023-11-19 04:15:57,922 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [3619] [2023-11-19 04:15:57,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [3624] [2023-11-19 04:15:57,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [3627] [2023-11-19 04:15:57,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [3629] [2023-11-19 04:15:57,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [3634] [2023-11-19 04:15:57,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [3637] [2023-11-19 04:15:57,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (val)); [3639] [2023-11-19 04:15:57,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [3657] [2023-11-19 04:15:57,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [3660] [2023-11-19 04:15:57,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (- val)); [3662] [2023-11-19 04:15:57,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [3667] [2023-11-19 04:15:57,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [3670] [2023-11-19 04:15:57,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [3672] [2023-11-19 04:15:57,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [3677] [2023-11-19 04:15:57,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [3680] [2023-11-19 04:15:57,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [3682] [2023-11-19 04:15:57,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [3687] [2023-11-19 04:15:57,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [3690] [2023-11-19 04:15:57,935 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (- val)); [3692] [2023-11-19 04:15:57,941 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3760] [2023-11-19 04:15:57,942 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3767] [2023-11-19 04:15:58,150 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] [2023-11-19 04:15:58,234 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_82319dfd-a34d-46eb-865a-80902ebaccab/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] [2023-11-19 04:15:58,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:15:58,414 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:15:58,423 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:15:58,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58 WrapperNode [2023-11-19 04:15:58,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:15:58,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:15:58,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:15:58,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:15:58,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:58,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:58,717 INFO L138 Inliner]: procedures = 259, calls = 1116, calls flagged for inlining = 115, calls inlined = 111, statements flattened = 2846 [2023-11-19 04:15:58,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:15:58,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:15:58,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:15:58,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:15:58,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:58,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:58,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:58,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:58,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:58,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:59,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:59,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:59,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:15:59,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:15:59,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:15:59,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:15:59,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (1/1) ... [2023-11-19 04:15:59,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:15:59,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:59,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:15:59,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82319dfd-a34d-46eb-865a-80902ebaccab/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:15:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_name [2023-11-19 04:15:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_name [2023-11-19 04:15:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:15:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:15:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:15:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:15:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_create [2023-11-19 04:15:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_create [2023-11-19 04:15:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 04:15:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 04:15:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-11-19 04:15:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-11-19 04:15:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:15:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:15:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 04:15:59,142 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 04:15:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_event [2023-11-19 04:15:59,142 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_event [2023-11-19 04:15:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:15:59,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:15:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_packet [2023-11-19 04:15:59,143 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_packet [2023-11-19 04:15:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-19 04:15:59,143 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-19 04:15:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:15:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:15:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:15:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:15:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 04:15:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 04:15:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_notify_readers [2023-11-19 04:15:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_notify_readers [2023-11-19 04:15:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 04:15:59,147 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 04:15:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:15:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 04:15:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 04:15:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_close_device [2023-11-19 04:15:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_close_device [2023-11-19 04:15:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:15:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_fasync [2023-11-19 04:15:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_fasync [2023-11-19 04:15:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2023-11-19 04:15:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2023-11-19 04:15:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mousedev [2023-11-19 04:15:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mousedev [2023-11-19 04:15:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_poll [2023-11-19 04:15:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_poll [2023-11-19 04:15:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 04:15:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 04:15:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-11-19 04:15:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-11-19 04:15:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_min [2023-11-19 04:15:59,151 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_min [2023-11-19 04:15:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:15:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_destroy [2023-11-19 04:15:59,152 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_destroy [2023-11-19 04:15:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:15:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:15:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:15:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2023-11-19 04:15:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2023-11-19 04:15:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure put_device [2023-11-19 04:15:59,155 INFO L138 BoogieDeclarations]: Found implementation of procedure put_device [2023-11-19 04:15:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-19 04:15:59,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-19 04:15:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_limit_delta [2023-11-19 04:15:59,156 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_limit_delta [2023-11-19 04:15:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 04:15:59,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 04:15:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 04:15:59,156 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 04:15:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:15:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 04:15:59,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 04:15:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:15:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:15:59,158 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_key_event [2023-11-19 04:15:59,158 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_key_event [2023-11-19 04:15:59,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 04:15:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 04:15:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure get_device [2023-11-19 04:15:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device [2023-11-19 04:15:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 04:15:59,160 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 04:15:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-11-19 04:15:59,161 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-11-19 04:15:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:15:59,161 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:15:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure kill_fasync [2023-11-19 04:15:59,161 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_fasync [2023-11-19 04:15:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:15:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure input_close_device [2023-11-19 04:15:59,162 INFO L138 BoogieDeclarations]: Found implementation of procedure input_close_device [2023-11-19 04:15:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-19 04:15:59,162 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-19 04:15:59,162 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2023-11-19 04:15:59,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2023-11-19 04:15:59,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 04:15:59,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 04:15:59,163 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_new_minor [2023-11-19 04:15:59,163 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_new_minor [2023-11-19 04:15:59,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:15:59,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 04:15:59,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 04:15:59,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:15:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_write [2023-11-19 04:15:59,166 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_write [2023-11-19 04:15:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 04:15:59,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 04:15:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_handle [2023-11-19 04:15:59,167 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_handle [2023-11-19 04:15:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:15:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-11-19 04:15:59,167 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-11-19 04:15:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 04:15:59,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mousedev [2023-11-19 04:15:59,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mousedev [2023-11-19 04:15:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-19 04:15:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-19 04:15:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_detach_client [2023-11-19 04:15:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_detach_client [2023-11-19 04:15:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_max [2023-11-19 04:15:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_max [2023-11-19 04:15:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 04:15:59,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 04:15:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-19 04:15:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-19 04:15:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_minor [2023-11-19 04:15:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_minor [2023-11-19 04:15:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_cleanup [2023-11-19 04:15:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_cleanup [2023-11-19 04:15:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_open_device [2023-11-19 04:15:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_open_device [2023-11-19 04:15:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure mousedev_disconnect [2023-11-19 04:15:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure mousedev_disconnect [2023-11-19 04:15:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_mousedev [2023-11-19 04:15:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_mousedev [2023-11-19 04:15:59,183 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 04:15:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 04:15:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-19 04:15:59,184 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-19 04:15:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:15:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:15:59,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:15:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 04:15:59,185 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 04:15:59,796 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:15:59,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:16:00,275 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:16:05,205 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:16:06,938 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:16:06,938 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:16:06,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:06 BoogieIcfgContainer [2023-11-19 04:16:06,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:16:06,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:16:06,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:16:06,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:16:06,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:15:55" (1/3) ... [2023-11-19 04:16:06,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fdaa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:06, skipping insertion in model container [2023-11-19 04:16:06,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:58" (2/3) ... [2023-11-19 04:16:06,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fdaa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:06, skipping insertion in model container [2023-11-19 04:16:06,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:06" (3/3) ... [2023-11-19 04:16:06,962 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2023-11-19 04:16:06,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:16:06,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:16:07,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:16:07,092 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;@5672fd13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:16:07,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:16:07,101 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) [2023-11-19 04:16:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-19 04:16:07,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:07,151 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] [2023-11-19 04:16:07,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:07,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash -112162573, now seen corresponding path program 1 times [2023-11-19 04:16:07,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:07,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366692958] [2023-11-19 04:16:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-11-19 04:16:08,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:08,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366692958] [2023-11-19 04:16:08,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366692958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:08,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:08,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:16:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700306896] [2023-11-19 04:16:08,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:08,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:08,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:08,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:08,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:08,746 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) [2023-11-19 04:16:10,799 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 [] [2023-11-19 04:16:14,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:17,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-19 04:16:18,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-19 04:16:20,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-19 04:16:22,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:23,525 INFO L93 Difference]: Finished difference Result 1758 states and 2514 transitions. [2023-11-19 04:16:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:16:23,528 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 [2023-11-19 04:16:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:23,557 INFO L225 Difference]: With dead ends: 1758 [2023-11-19 04:16:23,557 INFO L226 Difference]: Without dead ends: 1107 [2023-11-19 04:16:23,570 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 [2023-11-19 04:16:23,574 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 648 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:23,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1606 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 4 Unknown, 0 Unchecked, 14.5s Time] [2023-11-19 04:16:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2023-11-19 04:16:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1092. [2023-11-19 04:16:23,767 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) [2023-11-19 04:16:23,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1507 transitions. [2023-11-19 04:16:23,791 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1507 transitions. Word has length 192 [2023-11-19 04:16:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:23,793 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1507 transitions. [2023-11-19 04:16:23,794 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) [2023-11-19 04:16:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1507 transitions. [2023-11-19 04:16:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-19 04:16:23,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:23,800 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] [2023-11-19 04:16:23,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:16:23,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:23,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1661469889, now seen corresponding path program 1 times [2023-11-19 04:16:23,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:23,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819725287] [2023-11-19 04:16:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:23,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-11-19 04:16:24,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:24,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819725287] [2023-11-19 04:16:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819725287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:24,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:24,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:16:24,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517834674] [2023-11-19 04:16:24,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:24,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:24,770 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) [2023-11-19 04:16:26,799 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 [] [2023-11-19 04:16:28,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:31,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:33,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:35,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:38,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:39,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:41,586 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 [] [2023-11-19 04:16:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:41,873 INFO L93 Difference]: Finished difference Result 3071 states and 4228 transitions. [2023-11-19 04:16:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:16:41,874 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 [2023-11-19 04:16:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:41,893 INFO L225 Difference]: With dead ends: 3071 [2023-11-19 04:16:41,893 INFO L226 Difference]: Without dead ends: 2021 [2023-11-19 04:16:41,899 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 [2023-11-19 04:16:41,900 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 852 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:41,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1894 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2023-11-19 04:16:41,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2023-11-19 04:16:42,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2016. [2023-11-19 04:16:42,020 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) [2023-11-19 04:16:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2770 transitions. [2023-11-19 04:16:42,040 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2770 transitions. Word has length 193 [2023-11-19 04:16:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:42,041 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2770 transitions. [2023-11-19 04:16:42,041 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) [2023-11-19 04:16:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2770 transitions. [2023-11-19 04:16:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-19 04:16:42,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:42,047 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] [2023-11-19 04:16:42,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:16:42,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:42,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 975956317, now seen corresponding path program 1 times [2023-11-19 04:16:42,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:42,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916563082] [2023-11-19 04:16:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-11-19 04:16:42,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:42,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916563082] [2023-11-19 04:16:42,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916563082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:42,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:42,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:16:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549786830] [2023-11-19 04:16:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:42,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:42,694 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) [2023-11-19 04:16:44,717 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 [] [2023-11-19 04:16:47,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:16:48,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []