./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --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 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:02:54,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:02:54,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:02:54,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:02:54,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:02:54,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:02:54,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:02:54,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:02:54,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:02:54,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:02:54,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:02:54,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:02:54,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:02:54,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:02:54,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:02:54,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:02:54,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:02:54,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:02:54,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:02:54,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:02:54,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:02:54,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:02:54,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:02:54,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:02:54,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:02:54,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:02:54,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:02:54,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:02:54,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:02:54,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:02:54,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:02:54,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:02:54,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:02:54,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:02:54,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:02:54,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:02:54,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:02:54,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:02:54,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:02:54,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:02:54,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:02:54,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:02:54,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:02:54,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:02:54,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:02:54,351 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:02:54,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:02:54,352 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:02:54,352 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:02:54,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:02:54,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:02:54,354 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:02:54,354 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:02:54,354 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:02:54,355 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:02:54,355 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:02:54,356 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:02:54,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:02:54,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:02:54,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:02:54,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:02:54,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:02:54,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:02:54,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:02:54,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:02:54,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:02:54,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:02:54,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:02:54,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:02:54,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:02:54,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:02:54,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:02:54,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:02:54,362 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:02:54,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:02:54,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:02:54,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:02:54,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:02:54,363 INFO L138 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_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2021-11-07 02:02:54,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:02:54,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:02:54,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:02:54,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:02:54,655 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:02:54,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-07 02:02:54,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data/5ceff1aa0/037650ce318d45d7a54149fadf13400b/FLAG3fc96dab4 [2021-11-07 02:02:55,712 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:02:55,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-07 02:02:55,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data/5ceff1aa0/037650ce318d45d7a54149fadf13400b/FLAG3fc96dab4 [2021-11-07 02:02:56,080 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data/5ceff1aa0/037650ce318d45d7a54149fadf13400b [2021-11-07 02:02:56,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:02:56,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:02:56,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:56,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:02:56,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:02:56,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:56" (1/1) ... [2021-11-07 02:02:56,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d34f277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:56, skipping insertion in model container [2021-11-07 02:02:56,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:56" (1/1) ... [2021-11-07 02:02:56,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:02:56,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:02:57,090 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-07 02:02:57,090 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-11-07 02:02:57,596 WARN L228 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_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-11-07 02:02:57,993 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:57,993 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:57,994 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:57,994 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,001 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,001 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,002 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,003 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,165 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,167 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,188 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,200 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,218 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,226 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,227 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,228 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,260 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,261 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,285 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,335 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,337 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,358 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,367 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,373 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,392 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,407 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,416 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,431 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,444 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,444 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,513 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,526 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,534 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,540 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,561 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,605 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,616 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,619 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,645 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,646 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,679 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,826 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,841 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,874 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,876 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,877 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,883 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,886 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,887 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,893 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,894 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,895 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,895 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,895 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,896 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:58,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:59,033 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:02:59,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25687bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:59, skipping insertion in model container [2021-11-07 02:02:59,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:59,034 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:02:59,037 INFO L168 Benchmark]: Toolchain (without parser) took 2949.27 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 69.5 MB in the beginning and 75.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:02:59,038 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:02:59,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2946.73 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 69.5 MB in the beginning and 75.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:02:59,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2946.73 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 69.5 MB in the beginning and 75.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6617]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --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 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:03:01,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:03:01,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:03:01,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:03:01,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:03:01,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:03:01,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:03:01,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:03:01,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:03:01,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:03:01,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:03:01,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:03:01,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:03:01,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:03:01,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:03:01,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:03:01,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:03:01,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:03:01,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:03:01,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:03:01,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:03:01,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:03:01,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:03:01,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:03:01,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:03:01,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:03:01,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:03:01,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:03:01,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:03:01,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:03:01,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:03:01,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:03:01,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:03:01,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:03:01,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:03:01,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:03:01,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:03:01,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:03:01,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:03:01,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:03:01,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:03:01,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:03:01,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:03:01,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:03:01,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:03:01,654 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:03:01,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:03:01,655 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:03:01,655 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:03:01,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:03:01,656 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:03:01,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:03:01,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:03:01,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:03:01,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:03:01,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:03:01,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:03:01,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:03:01,658 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:03:01,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:03:01,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:03:01,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:03:01,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:03:01,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:03:01,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:03:01,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:03:01,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:03:01,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:03:01,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:03:01,660 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:03:01,661 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:01,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:03:01,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:03:01,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:03:01,662 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2021-11-07 02:03:02,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:03:02,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:03:02,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:03:02,119 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:03:02,120 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:03:02,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-07 02:03:02,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data/f5fae4e79/b6939f3abbb1448e9b3be20408c7b6ae/FLAG7f1f74781 [2021-11-07 02:03:03,420 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:03:03,421 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-07 02:03:03,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data/f5fae4e79/b6939f3abbb1448e9b3be20408c7b6ae/FLAG7f1f74781 [2021-11-07 02:03:03,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/data/f5fae4e79/b6939f3abbb1448e9b3be20408c7b6ae [2021-11-07 02:03:03,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:03:03,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:03:03,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:03:03,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:03:03,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:03:03,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:03" (1/1) ... [2021-11-07 02:03:03,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2288ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:03, skipping insertion in model container [2021-11-07 02:03:03,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:03" (1/1) ... [2021-11-07 02:03:03,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:03:03,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:03:04,635 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-07 02:03:04,638 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-11-07 02:03:05,188 WARN L228 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_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-11-07 02:03:06,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:03:06,682 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:03:06,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:03:06,963 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-07 02:03:06,963 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-11-07 02:03:06,986 WARN L228 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_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-11-07 02:03:07,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:03:07,367 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:03:07,573 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-07 02:03:07,574 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-11-07 02:03:07,584 WARN L228 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_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-11-07 02:03:08,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:03:08,352 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:03:08,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08 WrapperNode [2021-11-07 02:03:08,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:03:08,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:03:08,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:03:08,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:03:08,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:08,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:08,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:03:08,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:03:08,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:03:08,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:03:08,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:08,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:09,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:09,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:09,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:09,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:09,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:09,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:03:09,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:03:09,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:03:09,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:03:09,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (1/1) ... [2021-11-07 02:03:09,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:03:09,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:03:09,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:03:09,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:03:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:03:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:03:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:03:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:03:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:03:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:03:09,800 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2021-11-07 02:03:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2021-11-07 02:03:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2021-11-07 02:03:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2021-11-07 02:03:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 02:03:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:03:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:03:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2021-11-07 02:03:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2021-11-07 02:03:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:03:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2021-11-07 02:03:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2021-11-07 02:03:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 02:03:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:03:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:03:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:03:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:03:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:03:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:03:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:03:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:03:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:03:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2021-11-07 02:03:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2021-11-07 02:03:09,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:03:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:03:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:03:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:03:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 02:03:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 02:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:03:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:03:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:03:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2021-11-07 02:03:09,807 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2021-11-07 02:03:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:03:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2021-11-07 02:03:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2021-11-07 02:03:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:03:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:03:44,698 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:03:57,129 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##79: assume !(0bv64 != ~bvadd64(lec_addr_delete_~____ptr___0~4.base, lec_addr_delete_~____ptr___0~4.offset));lec_addr_delete_~tmp___2~14.base, lec_addr_delete_~tmp___2~14.offset := 0bv64, 0bv64;lec_addr_delete_~entry~10.base, lec_addr_delete_~entry~10.offset := lec_addr_delete_~tmp___2~14.base, lec_addr_delete_~tmp___2~14.offset; [2021-11-07 02:03:57,129 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##78: assume 0bv64 != ~bvadd64(lec_addr_delete_~____ptr___0~4.base, lec_addr_delete_~____ptr___0~4.offset);lec_addr_delete_~__mptr___0~5.base, lec_addr_delete_~__mptr___0~5.offset := lec_addr_delete_~____ptr___0~4.base, lec_addr_delete_~____ptr___0~4.offset;lec_addr_delete_~tmp___2~14.base, lec_addr_delete_~tmp___2~14.offset := lec_addr_delete_~__mptr___0~5.base, lec_addr_delete_~__mptr___0~5.offset; [2021-11-07 02:06:06,453 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:06:06,454 INFO L299 CfgBuilder]: Removed 1924 assume(true) statements. [2021-11-07 02:06:06,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:06:06 BoogieIcfgContainer [2021-11-07 02:06:06,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:06:06,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:06:06,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:06:06,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:06:06,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:03:03" (1/3) ... [2021-11-07 02:06:06,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53204199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:06:06, skipping insertion in model container [2021-11-07 02:06:06,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:08" (2/3) ... [2021-11-07 02:06:06,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53204199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:06:06, skipping insertion in model container [2021-11-07 02:06:06,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:06:06" (3/3) ... [2021-11-07 02:06:06,470 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-07 02:06:06,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:06:06,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 02:06:06,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:06:06,559 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:06:06,559 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 02:06:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 2379 states, 2323 states have (on average 1.4860094705122686) internal successors, (3452), 2341 states have internal predecessors, (3452), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-07 02:06:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 02:06:06,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:06,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:06,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:06:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:06,636 INFO L85 PathProgramCache]: Analyzing trace with hash 636787877, now seen corresponding path program 1 times [2021-11-07 02:06:06,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:06,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222524607] [2021-11-07 02:06:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:06,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:06,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:06,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:06,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:06:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:21,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:21,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:21,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:22,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:22,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222524607] [2021-11-07 02:06:22,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222524607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:22,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:22,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:06:22,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518302076] [2021-11-07 02:06:22,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:22,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:06:22,556 INFO L87 Difference]: Start difference. First operand has 2379 states, 2323 states have (on average 1.4860094705122686) internal successors, (3452), 2341 states have internal predecessors, (3452), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:23,866 INFO L93 Difference]: Finished difference Result 6954 states and 10351 transitions. [2021-11-07 02:06:23,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:23,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 02:06:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:23,916 INFO L225 Difference]: With dead ends: 6954 [2021-11-07 02:06:23,916 INFO L226 Difference]: Without dead ends: 4533 [2021-11-07 02:06:23,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:06:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2021-11-07 02:06:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 4509. [2021-11-07 02:06:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 4416 states have (on average 1.4698822463768115) internal successors, (6491), 4437 states have internal predecessors, (6491), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-07 02:06:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6613 transitions. [2021-11-07 02:06:24,202 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6613 transitions. Word has length 37 [2021-11-07 02:06:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:24,203 INFO L470 AbstractCegarLoop]: Abstraction has 4509 states and 6613 transitions. [2021-11-07 02:06:24,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6613 transitions. [2021-11-07 02:06:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 02:06:24,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:24,209 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:24,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:24,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:24,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:06:24,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 400817735, now seen corresponding path program 1 times [2021-11-07 02:06:24,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:24,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218355740] [2021-11-07 02:06:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:24,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:24,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:24,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:06:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:39,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:39,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:40,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:41,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:41,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218355740] [2021-11-07 02:06:41,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218355740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:41,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:41,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:06:41,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069251259] [2021-11-07 02:06:41,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:06:41,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:41,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:06:41,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:06:41,212 INFO L87 Difference]: Start difference. First operand 4509 states and 6613 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:51,629 INFO L93 Difference]: Finished difference Result 17782 states and 26495 transitions. [2021-11-07 02:06:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:06:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 02:06:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:51,747 INFO L225 Difference]: With dead ends: 17782 [2021-11-07 02:06:51,748 INFO L226 Difference]: Without dead ends: 13327 [2021-11-07 02:06:51,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:06:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13327 states. [2021-11-07 02:06:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13327 to 13271. [2021-11-07 02:06:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13271 states, 13028 states have (on average 1.4663033466380104) internal successors, (19103), 13057 states have internal predecessors, (19103), 175 states have call successors, (175), 54 states have call predecessors, (175), 54 states have return successors, (411), 183 states have call predecessors, (411), 175 states have call successors, (411) [2021-11-07 02:06:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 19689 transitions. [2021-11-07 02:06:52,435 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 19689 transitions. Word has length 45 [2021-11-07 02:06:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:52,436 INFO L470 AbstractCegarLoop]: Abstraction has 13271 states and 19689 transitions. [2021-11-07 02:06:52,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 19689 transitions. [2021-11-07 02:06:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 02:06:52,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:52,442 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:52,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:52,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:52,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:06:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1639119721, now seen corresponding path program 1 times [2021-11-07 02:06:52,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:52,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893763177] [2021-11-07 02:06:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:52,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:52,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:52,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:07:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:07,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 2870 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:07:07,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:08,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:09,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:09,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893763177] [2021-11-07 02:07:09,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893763177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:09,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:09,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:09,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674772410] [2021-11-07 02:07:09,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:09,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:09,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:09,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:09,099 INFO L87 Difference]: Start difference. First operand 13271 states and 19689 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:18,851 INFO L93 Difference]: Finished difference Result 52746 states and 80969 transitions. [2021-11-07 02:07:18,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:18,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 02:07:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:19,126 INFO L225 Difference]: With dead ends: 52746 [2021-11-07 02:07:19,127 INFO L226 Difference]: Without dead ends: 39529 [2021-11-07 02:07:19,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39529 states. [2021-11-07 02:07:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39529 to 39473. [2021-11-07 02:07:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39473 states, 38796 states have (on average 1.462289926796577) internal successors, (56731), 38833 states have internal predecessors, (56731), 501 states have call successors, (501), 162 states have call predecessors, (501), 162 states have return successors, (2765), 549 states have call predecessors, (2765), 501 states have call successors, (2765) [2021-11-07 02:07:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39473 states to 39473 states and 59997 transitions. [2021-11-07 02:07:21,358 INFO L78 Accepts]: Start accepts. Automaton has 39473 states and 59997 transitions. Word has length 46 [2021-11-07 02:07:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:21,358 INFO L470 AbstractCegarLoop]: Abstraction has 39473 states and 59997 transitions. [2021-11-07 02:07:21,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 39473 states and 59997 transitions. [2021-11-07 02:07:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 02:07:21,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:21,365 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:07:21,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:21,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:21,583 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:07:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash -217693832, now seen corresponding path program 1 times [2021-11-07 02:07:21,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:21,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817762077] [2021-11-07 02:07:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:21,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:21,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:21,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:21,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:07:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:36,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:07:36,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:37,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:38,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:38,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817762077] [2021-11-07 02:07:38,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817762077] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:38,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:38,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:38,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780516069] [2021-11-07 02:07:38,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:38,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:38,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:38,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:38,133 INFO L87 Difference]: Start difference. First operand 39473 states and 59997 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:48,777 INFO L93 Difference]: Finished difference Result 157362 states and 257383 transitions. [2021-11-07 02:07:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:48,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 02:07:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:49,994 INFO L225 Difference]: With dead ends: 157362 [2021-11-07 02:07:49,994 INFO L226 Difference]: Without dead ends: 117943 [2021-11-07 02:07:50,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:50,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117943 states. [2021-11-07 02:07:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117943 to 117887. [2021-11-07 02:07:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117887 states, 115956 states have (on average 1.4585791162164958) internal successors, (169131), 115969 states have internal predecessors, (169131), 1431 states have call successors, (1431), 486 states have call predecessors, (1431), 486 states have return successors, (18571), 1647 states have call predecessors, (18571), 1431 states have call successors, (18571) [2021-11-07 02:07:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117887 states to 117887 states and 189133 transitions. [2021-11-07 02:07:57,271 INFO L78 Accepts]: Start accepts. Automaton has 117887 states and 189133 transitions. Word has length 47 [2021-11-07 02:07:57,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:57,271 INFO L470 AbstractCegarLoop]: Abstraction has 117887 states and 189133 transitions. [2021-11-07 02:07:57,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 117887 states and 189133 transitions. [2021-11-07 02:07:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 02:07:57,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:57,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:07:57,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:57,482 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 02:07:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1980233144, now seen corresponding path program 1 times [2021-11-07 02:07:57,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:57,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244281304] [2021-11-07 02:07:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:57,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:57,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:57,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:57,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c70bbcd-0d11-43e2-9cf0-754b8e727a46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:08:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:12,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:12,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:13,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:14,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:14,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244281304] [2021-11-07 02:08:14,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244281304] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:14,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:14,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:14,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623187623] [2021-11-07 02:08:14,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:14,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:14,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:14,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:14,284 INFO L87 Difference]: Start difference. First operand 117887 states and 189133 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:37,298 INFO L93 Difference]: Finished difference Result 470522 states and 876809 transitions. [2021-11-07 02:08:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 02:08:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:40,817 INFO L225 Difference]: With dead ends: 470522 [2021-11-07 02:08:40,817 INFO L226 Difference]: Without dead ends: 352689 [2021-11-07 02:08:43,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352689 states.