./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta --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 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:21:08,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:21:08,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:21:08,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:21:08,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:21:08,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:21:08,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:21:08,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:21:08,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:21:08,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:21:08,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:21:08,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:21:08,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:21:08,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:21:08,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:21:08,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:21:08,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:21:08,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:21:08,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:21:08,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:21:08,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:21:08,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:21:08,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:21:08,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:21:08,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:21:08,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:21:08,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:21:08,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:21:08,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:21:08,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:21:08,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:21:08,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:21:08,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:21:08,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:21:08,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:21:08,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:21:08,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:21:08,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:21:08,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:21:08,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:21:08,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:21:08,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:21:08,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:21:08,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:21:08,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:21:08,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:21:08,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:21:08,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:21:08,484 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:21:08,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:21:08,484 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:21:08,485 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:21:08,485 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:21:08,485 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:21:08,485 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:21:08,486 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:21:08,486 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:21:08,486 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:21:08,486 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:21:08,487 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:21:08,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:21:08,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:21:08,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:21:08,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:21:08,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:21:08,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:21:08,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:21:08,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:21:08,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:21:08,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:21:08,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:21:08,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:21:08,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:21:08,491 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:21:08,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:21:08,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:21:08,492 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:21:08,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:21:08,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:21:08,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:21:08,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 [2022-10-17 17:21:08,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:21:08,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:21:08,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:21:08,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:21:08,901 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:21:08,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-10-17 17:21:08,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/data/5e25cacf2/307f02848ca04e07b13e847a7f5eb98b/FLAG332ecb298 [2022-10-17 17:21:10,123 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:21:10,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-10-17 17:21:10,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/data/5e25cacf2/307f02848ca04e07b13e847a7f5eb98b/FLAG332ecb298 [2022-10-17 17:21:10,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/data/5e25cacf2/307f02848ca04e07b13e847a7f5eb98b [2022-10-17 17:21:10,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:21:10,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:21:10,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:10,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:21:10,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:21:10,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:10" (1/1) ... [2022-10-17 17:21:10,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8dafbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:10, skipping insertion in model container [2022-10-17 17:21:10,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:10" (1/1) ... [2022-10-17 17:21:10,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:21:10,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:21:14,409 WARN L230 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_254b79bd-48c9-46ce-85dc-fa4187fb3f83/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2022-10-17 17:21:14,413 WARN L230 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_254b79bd-48c9-46ce-85dc-fa4187fb3f83/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2022-10-17 17:21:14,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:14,494 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:21:14,945 WARN L230 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_254b79bd-48c9-46ce-85dc-fa4187fb3f83/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2022-10-17 17:21:14,947 WARN L230 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_254b79bd-48c9-46ce-85dc-fa4187fb3f83/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2022-10-17 17:21:14,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:15,237 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:21:15,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15 WrapperNode [2022-10-17 17:21:15,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:15,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:15,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:21:15,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:21:15,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,590 INFO L138 Inliner]: procedures = 547, calls = 2335, calls flagged for inlining = 258, calls inlined = 200, statements flattened = 5036 [2022-10-17 17:21:15,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:15,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:21:15,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:21:15,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:21:15,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,788 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:21:15,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:21:15,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:21:15,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:21:15,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (1/1) ... [2022-10-17 17:21:15,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:21:15,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:15,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:21:15,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:21:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2022-10-17 17:21:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2022-10-17 17:21:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:21:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:21:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-10-17 17:21:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-10-17 17:21:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-10-17 17:21:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-10-17 17:21:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:21:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:21:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-10-17 17:21:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-10-17 17:21:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2022-10-17 17:21:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2022-10-17 17:21:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-10-17 17:21:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-10-17 17:21:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2022-10-17 17:21:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2022-10-17 17:21:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-10-17 17:21:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-10-17 17:21:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2022-10-17 17:21:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2022-10-17 17:21:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2022-10-17 17:21:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2022-10-17 17:21:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2022-10-17 17:21:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2022-10-17 17:21:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2022-10-17 17:21:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2022-10-17 17:21:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2022-10-17 17:21:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2022-10-17 17:21:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:21:15,998 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:21:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2022-10-17 17:21:15,998 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2022-10-17 17:21:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2022-10-17 17:21:15,999 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2022-10-17 17:21:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-10-17 17:21:15,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-10-17 17:21:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-10-17 17:21:15,999 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-10-17 17:21:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-10-17 17:21:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-10-17 17:21:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2022-10-17 17:21:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2022-10-17 17:21:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:21:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-10-17 17:21:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-10-17 17:21:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2022-10-17 17:21:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2022-10-17 17:21:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2022-10-17 17:21:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2022-10-17 17:21:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-17 17:21:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-17 17:21:16,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:21:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2022-10-17 17:21:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2022-10-17 17:21:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-10-17 17:21:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-10-17 17:21:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-10-17 17:21:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-10-17 17:21:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-17 17:21:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-17 17:21:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:21:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-10-17 17:21:16,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-10-17 17:21:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2022-10-17 17:21:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2022-10-17 17:21:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:21:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-10-17 17:21:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-10-17 17:21:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:21:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:21:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-10-17 17:21:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-10-17 17:21:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2022-10-17 17:21:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2022-10-17 17:21:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-10-17 17:21:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-10-17 17:21:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2022-10-17 17:21:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2022-10-17 17:21:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-17 17:21:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-17 17:21:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2022-10-17 17:21:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2022-10-17 17:21:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-10-17 17:21:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-10-17 17:21:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_uninit [2022-10-17 17:21:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_uninit [2022-10-17 17:21:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-10-17 17:21:16,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-10-17 17:21:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:21:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:21:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-17 17:21:16,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-17 17:21:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:21:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-10-17 17:21:16,014 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-10-17 17:21:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-10-17 17:21:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-10-17 17:21:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-10-17 17:21:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-10-17 17:21:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-10-17 17:21:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-10-17 17:21:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2022-10-17 17:21:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2022-10-17 17:21:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-10-17 17:21:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-10-17 17:21:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 17:21:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 17:21:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-10-17 17:21:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-10-17 17:21:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-10-17 17:21:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-10-17 17:21:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-17 17:21:16,023 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-17 17:21:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2022-10-17 17:21:16,023 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2022-10-17 17:21:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:21:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:21:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 17:21:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 17:21:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:21:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:21:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:21:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:21:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2022-10-17 17:21:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2022-10-17 17:21:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-10-17 17:21:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-10-17 17:21:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2022-10-17 17:21:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2022-10-17 17:21:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-10-17 17:21:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-10-17 17:21:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-10-17 17:21:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-10-17 17:21:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-10-17 17:21:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-10-17 17:21:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-10-17 17:21:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-10-17 17:21:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:21:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:21:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-17 17:21:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-17 17:21:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-10-17 17:21:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-10-17 17:21:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2022-10-17 17:21:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2022-10-17 17:21:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-10-17 17:21:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-10-17 17:21:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:21:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2022-10-17 17:21:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2022-10-17 17:21:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2022-10-17 17:21:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2022-10-17 17:21:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-10-17 17:21:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-10-17 17:21:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2022-10-17 17:21:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2022-10-17 17:21:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:21:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-10-17 17:21:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-10-17 17:21:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2022-10-17 17:21:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2022-10-17 17:21:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2022-10-17 17:21:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2022-10-17 17:21:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:21:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-10-17 17:21:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-10-17 17:21:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2022-10-17 17:21:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2022-10-17 17:21:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2022-10-17 17:21:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2022-10-17 17:21:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-17 17:21:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-17 17:21:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-10-17 17:21:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-10-17 17:21:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-10-17 17:21:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-10-17 17:21:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2022-10-17 17:21:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2022-10-17 17:21:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-10-17 17:21:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-10-17 17:21:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2022-10-17 17:21:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2022-10-17 17:21:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-10-17 17:21:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-10-17 17:21:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-10-17 17:21:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-10-17 17:21:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-10-17 17:21:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-10-17 17:21:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-10-17 17:21:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-10-17 17:21:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-10-17 17:21:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-10-17 17:21:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-10-17 17:21:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-10-17 17:21:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2022-10-17 17:21:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2022-10-17 17:21:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-17 17:21:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-17 17:21:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 17:21:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 17:21:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-10-17 17:21:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-10-17 17:21:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:21:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-10-17 17:21:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-10-17 17:21:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:21:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:21:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2022-10-17 17:21:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2022-10-17 17:21:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-10-17 17:21:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-10-17 17:21:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2022-10-17 17:21:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2022-10-17 17:21:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-10-17 17:21:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-10-17 17:21:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-10-17 17:21:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-10-17 17:21:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-10-17 17:21:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-10-17 17:21:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2022-10-17 17:21:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2022-10-17 17:21:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2022-10-17 17:21:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2022-10-17 17:21:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-10-17 17:21:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-10-17 17:21:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-10-17 17:21:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-10-17 17:21:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-10-17 17:21:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-10-17 17:21:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2022-10-17 17:21:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2022-10-17 17:21:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2022-10-17 17:21:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2022-10-17 17:21:16,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:21:16,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-10-17 17:21:16,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-10-17 17:21:16,041 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-10-17 17:21:16,041 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-10-17 17:21:16,041 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-10-17 17:21:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-10-17 17:21:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2022-10-17 17:21:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2022-10-17 17:21:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2022-10-17 17:21:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2022-10-17 17:21:16,848 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:21:16,857 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:21:17,153 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:21:28,012 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:21:29,469 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:21:29,469 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:21:29,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:29 BoogieIcfgContainer [2022-10-17 17:21:29,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:21:29,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:21:29,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:21:29,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:21:29,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:21:10" (1/3) ... [2022-10-17 17:21:29,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bf7c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:29, skipping insertion in model container [2022-10-17 17:21:29,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:15" (2/3) ... [2022-10-17 17:21:29,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bf7c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:29, skipping insertion in model container [2022-10-17 17:21:29,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:29" (3/3) ... [2022-10-17 17:21:29,489 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-10-17 17:21:29,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:21:29,512 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:21:29,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:21:29,649 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f7e11d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:21:29,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:21:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 1231 states, 688 states have (on average 1.254360465116279) internal successors, (863), 727 states have internal predecessors, (863), 427 states have call successors, (427), 115 states have call predecessors, (427), 114 states have return successors, (423), 420 states have call predecessors, (423), 423 states have call successors, (423) [2022-10-17 17:21:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-10-17 17:21:29,698 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:29,699 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:29,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2024528664, now seen corresponding path program 1 times [2022-10-17 17:21:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:29,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868411814] [2022-10-17 17:21:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:29,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-10-17 17:21:33,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:33,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868411814] [2022-10-17 17:21:33,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868411814] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:21:33,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115867334] [2022-10-17 17:21:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:33,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:21:33,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:33,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:21:33,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_254b79bd-48c9-46ce-85dc-fa4187fb3f83/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:21:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:34,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-17 17:21:34,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:21:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-17 17:21:34,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:21:34,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115867334] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:34,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:21:34,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 12 [2022-10-17 17:21:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040644795] [2022-10-17 17:21:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:21:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:34,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:21:34,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:21:34,684 INFO L87 Difference]: Start difference. First operand has 1231 states, 688 states have (on average 1.254360465116279) internal successors, (863), 727 states have internal predecessors, (863), 427 states have call successors, (427), 115 states have call predecessors, (427), 114 states have return successors, (423), 420 states have call predecessors, (423), 423 states have call successors, (423) Second operand has 10 states, 7 states have (on average 9.0) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26)