./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2 --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 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:24:38,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:24:38,120 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-02 12:24:38,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:24:38,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:24:38,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:24:38,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:24:38,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:24:38,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:24:38,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:24:38,174 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:24:38,175 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:24:38,175 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:24:38,176 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:24:38,176 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:24:38,178 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:24:38,179 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:24:38,179 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:24:38,179 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:24:38,180 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:24:38,182 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:24:38,186 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:24:38,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:24:38,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:24:38,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:24:38,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:24:38,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:24:38,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:24:38,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:24:38,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:24:38,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:24:38,190 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:24:38,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:24:38,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:24:38,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:24:38,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:38,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:24:38,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:24:38,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:24:38,192 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:24:38,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:24:38,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:24:38,197 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:24:38,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:24:38,198 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_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 389f662f7096bd36438270dc54f296be4073de8eeb864b893c17044d6fb4cc06 [2024-11-02 12:24:38,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:24:38,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:24:38,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:24:38,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:24:38,562 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:24:38,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-02 12:24:40,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:24:41,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:24:41,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2024-11-02 12:24:41,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/data/bca46f760/a7f79a83fe974f60b63f2b2061ff38ea/FLAG106d3d1d1 [2024-11-02 12:24:41,817 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/data/bca46f760/a7f79a83fe974f60b63f2b2061ff38ea [2024-11-02 12:24:41,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:24:41,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:24:41,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:41,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:24:41,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:24:41,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:41" (1/1) ... [2024-11-02 12:24:41,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a844f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:41, skipping insertion in model container [2024-11-02 12:24:41,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:41" (1/1) ... [2024-11-02 12:24:41,988 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:24:43,396 WARN L251 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_7fda7c44-14db-4457-bfd5-93673d720ce6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2024-11-02 12:24:43,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:43,953 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:24:44,111 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"); [5277] [2024-11-02 12:24:44,114 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)); [5284] [2024-11-02 12:24:44,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [5292-5293] [2024-11-02 12:24:44,116 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [5301-5302] [2024-11-02 12:24:44,120 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; incl %0": "+m" (v->counter)); [5349] [2024-11-02 12:24:44,121 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; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [5357-5358] [2024-11-02 12:24:44,143 WARN L251 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_7fda7c44-14db-4457-bfd5-93673d720ce6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2024-11-02 12:24:44,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [5939] [2024-11-02 12:24:44,180 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [5942] [2024-11-02 12:24:44,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [5945] [2024-11-02 12:24:44,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [5948] [2024-11-02 12:24:44,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [5951] [2024-11-02 12:24:44,183 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [5967-5968] [2024-11-02 12:24:44,183 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [5971-5972] [2024-11-02 12:24:44,184 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [5975-5976] [2024-11-02 12:24:44,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [5979-5980] [2024-11-02 12:24:44,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [5983-5984] [2024-11-02 12:24:44,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6007-6008] [2024-11-02 12:24:44,188 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6011-6012] [2024-11-02 12:24:44,188 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6015-6016] [2024-11-02 12:24:44,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6019-6020] [2024-11-02 12:24:44,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6023-6024] [2024-11-02 12:24:44,203 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)argp): "ebx"); [6152] [2024-11-02 12:24:44,204 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)argp): "ebx"); [6155] [2024-11-02 12:24:44,206 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)argp): "ebx"); [6158] [2024-11-02 12:24:44,207 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)argp): "ebx"); [6161] [2024-11-02 12:24:44,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)argp): "ebx"); [6164] [2024-11-02 12:24:44,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" ((int *)argp), "i" (4UL)); [6176-6177] [2024-11-02 12:24:44,216 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6194-6195] [2024-11-02 12:24:44,216 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6198-6199] [2024-11-02 12:24:44,217 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6202-6203] [2024-11-02 12:24:44,217 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6206-6207] [2024-11-02 12:24:44,217 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [6210-6211] [2024-11-02 12:24:44,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___0), "=r" (__val_gu___0): "0" (p), "i" (4UL)); [6223-6224] [2024-11-02 12:24:44,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6237-6238] [2024-11-02 12:24:44,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6241-6242] [2024-11-02 12:24:44,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6245-6246] [2024-11-02 12:24:44,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6249-6250] [2024-11-02 12:24:44,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [6253-6254] [2024-11-02 12:24:44,226 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___1), "=r" (__val_gu___1): "0" (p), "i" (4UL)); [6266-6267] [2024-11-02 12:24:44,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___2): "0" (__pu_val___2), "c" ((int *)argp): "ebx"); [6304-6305] [2024-11-02 12:24:44,231 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___2): "0" (__pu_val___2), "c" ((int *)argp): "ebx"); [6308-6309] [2024-11-02 12:24:44,232 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___2): "0" (__pu_val___2), "c" ((int *)argp): "ebx"); [6312-6313] [2024-11-02 12:24:44,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___2): "0" (__pu_val___2), "c" ((int *)argp): "ebx"); [6316-6317] [2024-11-02 12:24:44,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___2): "0" (__pu_val___2), "c" ((int *)argp): "ebx"); [6320-6321] [2024-11-02 12:24:44,237 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___2), "=r" (__val_gu___2): "0" ((int *)argp), "i" (4UL)); [6333-6334] [2024-11-02 12:24:44,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:44,439 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:24:44,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44 WrapperNode [2024-11-02 12:24:44,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:44,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:44,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:24:44,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:24:44,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,657 INFO L138 Inliner]: procedures = 176, calls = 475, calls flagged for inlining = 92, calls inlined = 85, statements flattened = 1980 [2024-11-02 12:24:44,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:44,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:24:44,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:24:44,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:24:44,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:24:44,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:24:44,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:24:44,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:24:44,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (1/1) ... [2024-11-02 12:24:44,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:44,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:44,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:24:44,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fda7c44-14db-4457-bfd5-93673d720ce6/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:24:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2024-11-02 12:24:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2024-11-02 12:24:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2024-11-02 12:24:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2024-11-02 12:24:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2024-11-02 12:24:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2024-11-02 12:24:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-02 12:24:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2024-11-02 12:24:44,922 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2024-11-02 12:24:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-02 12:24:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-02 12:24:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-02 12:24:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-02 12:24:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:24:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2024-11-02 12:24:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2024-11-02 12:24:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2024-11-02 12:24:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2024-11-02 12:24:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-02 12:24:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-02 12:24:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2024-11-02 12:24:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2024-11-02 12:24:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:24:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:24:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2024-11-02 12:24:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2024-11-02 12:24:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2024-11-02 12:24:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2024-11-02 12:24:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2024-11-02 12:24:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2024-11-02 12:24:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2024-11-02 12:24:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2024-11-02 12:24:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2024-11-02 12:24:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2024-11-02 12:24:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-02 12:24:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-02 12:24:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:24:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-02 12:24:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-02 12:24:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2024-11-02 12:24:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2024-11-02 12:24:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2024-11-02 12:24:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2024-11-02 12:24:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-02 12:24:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-02 12:24:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2024-11-02 12:24:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2024-11-02 12:24:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2024-11-02 12:24:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2024-11-02 12:24:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:24:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:24:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:24:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2024-11-02 12:24:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2024-11-02 12:24:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-02 12:24:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-02 12:24:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:24:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:24:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:24:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2024-11-02 12:24:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2024-11-02 12:24:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2024-11-02 12:24:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2024-11-02 12:24:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:24:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2024-11-02 12:24:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2024-11-02 12:24:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2024-11-02 12:24:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2024-11-02 12:24:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2024-11-02 12:24:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2024-11-02 12:24:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:24:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:24:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2024-11-02 12:24:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2024-11-02 12:24:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2024-11-02 12:24:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2024-11-02 12:24:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2024-11-02 12:24:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2024-11-02 12:24:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:24:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:24:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2024-11-02 12:24:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2024-11-02 12:24:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2024-11-02 12:24:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2024-11-02 12:24:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2024-11-02 12:24:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2024-11-02 12:24:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:24:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2024-11-02 12:24:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2024-11-02 12:24:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-02 12:24:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-02 12:24:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-02 12:24:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2024-11-02 12:24:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2024-11-02 12:24:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:24:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:24:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2024-11-02 12:24:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2024-11-02 12:24:45,541 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:24:45,546 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:24:45,658 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-02 12:24:50,165 INFO L? ?]: Removed 1020 outVars from TransFormulas that were not future-live. [2024-11-02 12:24:50,165 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:24:50,913 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:24:50,917 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-02 12:24:50,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:50 BoogieIcfgContainer [2024-11-02 12:24:50,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:24:50,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:24:50,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:24:50,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:24:50,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:24:41" (1/3) ... [2024-11-02 12:24:50,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1596de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:50, skipping insertion in model container [2024-11-02 12:24:50,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:44" (2/3) ... [2024-11-02 12:24:50,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1596de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:50, skipping insertion in model container [2024-11-02 12:24:50,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:50" (3/3) ... [2024-11-02 12:24:50,933 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2024-11-02 12:24:50,954 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:24:50,954 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:24:51,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:24:51,064 INFO L333 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, 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;@13657380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:24:51,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:24:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 464 states, 298 states have (on average 1.3859060402684564) internal successors, (413), 313 states have internal predecessors, (413), 124 states have call successors, (124), 41 states have call predecessors, (124), 40 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-02 12:24:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-02 12:24:51,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:51,091 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:51,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:51,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1111346706, now seen corresponding path program 1 times [2024-11-02 12:24:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:51,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667741863] [2024-11-02 12:24:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-02 12:24:52,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:52,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667741863] [2024-11-02 12:24:52,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667741863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:52,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:52,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:52,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171519566] [2024-11-02 12:24:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:52,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:52,174 INFO L87 Difference]: Start difference. First operand has 464 states, 298 states have (on average 1.3859060402684564) internal successors, (413), 313 states have internal predecessors, (413), 124 states have call successors, (124), 41 states have call predecessors, (124), 40 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-02 12:24:54,202 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 [] [2024-11-02 12:24:56,211 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 [] [2024-11-02 12:24:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:57,237 INFO L93 Difference]: Finished difference Result 1328 states and 1919 transitions. [2024-11-02 12:24:57,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:57,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 73 [2024-11-02 12:24:57,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:57,259 INFO L225 Difference]: With dead ends: 1328 [2024-11-02 12:24:57,260 INFO L226 Difference]: Without dead ends: 873 [2024-11-02 12:24:57,266 INFO L431 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 [2024-11-02 12:24:57,270 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 593 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:57,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1115 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2024-11-02 12:24:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-02 12:24:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2024-11-02 12:24:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 569 states have (on average 1.3620386643233744) internal successors, (775), 587 states have internal predecessors, (775), 225 states have call successors, (225), 79 states have call predecessors, (225), 78 states have return successors, (224), 220 states have call predecessors, (224), 224 states have call successors, (224) [2024-11-02 12:24:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1224 transitions. [2024-11-02 12:24:57,419 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1224 transitions. Word has length 73 [2024-11-02 12:24:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:57,421 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1224 transitions. [2024-11-02 12:24:57,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-02 12:24:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1224 transitions. [2024-11-02 12:24:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-02 12:24:57,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:57,427 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:57,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:24:57,428 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:57,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1022974427, now seen corresponding path program 1 times [2024-11-02 12:24:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:57,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765570863] [2024-11-02 12:24:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:57,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-02 12:24:57,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:57,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765570863] [2024-11-02 12:24:57,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765570863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:57,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:57,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:24:57,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86225954] [2024-11-02 12:24:57,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:57,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:57,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:57,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:57,963 INFO L87 Difference]: Start difference. First operand 873 states and 1224 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-02 12:24:59,977 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 [] [2024-11-02 12:25:01,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:25:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:25:03,982 INFO L93 Difference]: Finished difference Result 1725 states and 2455 transitions. [2024-11-02 12:25:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:25:03,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2024-11-02 12:25:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:25:03,998 INFO L225 Difference]: With dead ends: 1725 [2024-11-02 12:25:03,998 INFO L226 Difference]: Without dead ends: 1716 [2024-11-02 12:25:04,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:25:04,001 INFO L432 NwaCegarLoop]: 576 mSDtfsCounter, 623 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:25:04,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1679 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 282 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2024-11-02 12:25:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2024-11-02 12:25:04,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1708. [2024-11-02 12:25:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1113 states have (on average 1.3647798742138364) internal successors, (1519), 1149 states have internal predecessors, (1519), 438 states have call successors, (438), 157 states have call predecessors, (438), 156 states have return successors, (475), 429 states have call predecessors, (475), 437 states have call successors, (475) [2024-11-02 12:25:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2432 transitions. [2024-11-02 12:25:04,137 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2432 transitions. Word has length 76 [2024-11-02 12:25:04,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:25:04,138 INFO L471 AbstractCegarLoop]: Abstraction has 1708 states and 2432 transitions. [2024-11-02 12:25:04,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-02 12:25:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2432 transitions. [2024-11-02 12:25:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-02 12:25:04,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:25:04,146 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:25:04,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:25:04,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:25:04,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:25:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2022008080, now seen corresponding path program 1 times [2024-11-02 12:25:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:25:04,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908675894] [2024-11-02 12:25:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:25:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:25:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:25:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-02 12:25:04,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:25:04,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908675894] [2024-11-02 12:25:04,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908675894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:25:04,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:25:04,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:25:04,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687851987] [2024-11-02 12:25:04,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:25:04,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:25:04,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:25:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:25:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:25:04,570 INFO L87 Difference]: Start difference. First operand 1708 states and 2432 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:25:06,585 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 [] [2024-11-02 12:25:08,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-02 12:25:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:25:08,820 INFO L93 Difference]: Finished difference Result 4356 states and 6145 transitions. [2024-11-02 12:25:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:25:08,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 113 [2024-11-02 12:25:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:25:08,845 INFO L225 Difference]: With dead ends: 4356 [2024-11-02 12:25:08,846 INFO L226 Difference]: Without dead ends: 2669 [2024-11-02 12:25:08,867 INFO L431 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 [2024-11-02 12:25:08,869 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 367 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:25:08,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1051 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-11-02 12:25:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2024-11-02 12:25:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2660. [2024-11-02 12:25:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2660 states, 1752 states have (on average 1.355593607305936) internal successors, (2375), 1795 states have internal predecessors, (2375), 651 states have call successors, (651), 257 states have call predecessors, (651), 256 states have return successors, (706), 639 states have call predecessors, (706), 650 states have call successors, (706) [2024-11-02 12:25:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3732 transitions. [2024-11-02 12:25:09,110 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3732 transitions. Word has length 113 [2024-11-02 12:25:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:25:09,111 INFO L471 AbstractCegarLoop]: Abstraction has 2660 states and 3732 transitions. [2024-11-02 12:25:09,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-02 12:25:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3732 transitions. [2024-11-02 12:25:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-02 12:25:09,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:25:09,127 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:25:09,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:25:09,127 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:25:09,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:25:09,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2044468820, now seen corresponding path program 1 times [2024-11-02 12:25:09,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:25:09,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072212422] [2024-11-02 12:25:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:25:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:25:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:25:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-02 12:25:09,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:25:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072212422] [2024-11-02 12:25:09,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072212422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:25:09,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:25:09,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:25:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135696279] [2024-11-02 12:25:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:25:09,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:25:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:25:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:25:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:25:09,461 INFO L87 Difference]: Start difference. First operand 2660 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-02 12:25:11,474 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 [] [2024-11-02 12:25:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:25:12,681 INFO L93 Difference]: Finished difference Result 6504 states and 9080 transitions. [2024-11-02 12:25:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:25:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2024-11-02 12:25:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:25:12,709 INFO L225 Difference]: With dead ends: 6504 [2024-11-02 12:25:12,709 INFO L226 Difference]: Without dead ends: 3865 [2024-11-02 12:25:12,720 INFO L431 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 [2024-11-02 12:25:12,721 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 415 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:25:12,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1293 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2024-11-02 12:25:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2024-11-02 12:25:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3858. [2024-11-02 12:25:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2554 states have (on average 1.360219263899765) internal successors, (3474), 2631 states have internal predecessors, (3474), 906 states have call successors, (906), 398 states have call predecessors, (906), 397 states have return successors, (985), 884 states have call predecessors, (985), 905 states have call successors, (985) [2024-11-02 12:25:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5365 transitions. [2024-11-02 12:25:12,965 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5365 transitions. Word has length 130 [2024-11-02 12:25:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:25:12,966 INFO L471 AbstractCegarLoop]: Abstraction has 3858 states and 5365 transitions. [2024-11-02 12:25:12,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-02 12:25:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5365 transitions. [2024-11-02 12:25:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-02 12:25:12,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:25:12,975 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:25:12,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:25:12,975 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:25:12,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:25:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash -752948001, now seen corresponding path program 1 times [2024-11-02 12:25:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:25:12,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532855008] [2024-11-02 12:25:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:25:12,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:25:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:25:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-02 12:25:13,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:25:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532855008] [2024-11-02 12:25:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532855008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:25:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:25:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:25:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087305851] [2024-11-02 12:25:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:25:13,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:25:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:25:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:25:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:25:13,426 INFO L87 Difference]: Start difference. First operand 3858 states and 5365 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17)