./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 10:41:37,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 10:41:37,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 10:41:37,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 10:41:37,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 10:41:37,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 10:41:37,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 10:41:37,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 10:41:37,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 10:41:37,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 10:41:37,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 10:41:37,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 10:41:37,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 10:41:37,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 10:41:37,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 10:41:37,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 10:41:37,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 10:41:37,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 10:41:37,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 10:41:37,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 10:41:37,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 10:41:37,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 10:41:37,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 10:41:37,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 10:41:37,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 10:41:37,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 10:41:37,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 10:41:37,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 10:41:37,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 10:41:37,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 10:41:37,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 10:41:37,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 10:41:37,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 10:41:37,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 10:41:37,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 10:41:37,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 10:41:37,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 10:41:37,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 10:41:37,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 10:41:37,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 10:41:37,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 10:41:37,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 10:41:37,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 10:41:37,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 10:41:37,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 10:41:37,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 10:41:37,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 10:41:37,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 10:41:37,447 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 10:41:37,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 10:41:37,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 10:41:37,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 10:41:37,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 10:41:37,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 10:41:37,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 10:41:37,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 10:41:37,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 10:41:37,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 10:41:37,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 10:41:37,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 10:41:37,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 10:41:37,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:41:37,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 10:41:37,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 10:41:37,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 10:41:37,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 10:41:37,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 10:41:37,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 10:41:37,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 10:41:37,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 10:41:37,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 10:41:37,452 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c [2021-11-04 10:41:37,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 10:41:37,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 10:41:37,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 10:41:37,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 10:41:37,747 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 10:41:37,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-04 10:41:37,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41c7f3ab1/cad4ceed375f44dab016e68ba129ba14/FLAGda573a024 [2021-11-04 10:41:38,651 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 10:41:38,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-04 10:41:38,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41c7f3ab1/cad4ceed375f44dab016e68ba129ba14/FLAGda573a024 [2021-11-04 10:41:39,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41c7f3ab1/cad4ceed375f44dab016e68ba129ba14 [2021-11-04 10:41:39,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 10:41:39,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 10:41:39,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 10:41:39,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 10:41:39,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 10:41:39,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:41:39" (1/1) ... [2021-11-04 10:41:39,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f28fcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:39, skipping insertion in model container [2021-11-04 10:41:39,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:41:39" (1/1) ... [2021-11-04 10:41:39,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 10:41:39,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 10:41:44,016 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517003,517016] [2021-11-04 10:41:44,019 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517172,517185] [2021-11-04 10:41:44,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517339,517352] [2021-11-04 10:41:44,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517507,517520] [2021-11-04 10:41:44,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:41:44,065 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 10:41:44,482 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517003,517016] [2021-11-04 10:41:44,483 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517172,517185] [2021-11-04 10:41:44,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517339,517352] [2021-11-04 10:41:44,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517507,517520] [2021-11-04 10:41:44,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:41:44,647 INFO L208 MainTranslator]: Completed translation [2021-11-04 10:41:44,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44 WrapperNode [2021-11-04 10:41:44,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 10:41:44,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 10:41:44,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 10:41:44,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 10:41:44,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:44,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:45,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 10:41:45,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 10:41:45,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 10:41:45,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 10:41:45,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:45,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:46,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:46,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:47,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:47,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:47,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:47,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 10:41:47,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 10:41:47,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 10:41:47,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 10:41:47,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (1/1) ... [2021-11-04 10:41:47,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:41:47,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 10:41:47,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 10:41:47,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 10:41:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_parallel [2021-11-04 10:41:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_parallel [2021-11-04 10:41:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-04 10:41:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-04 10:41:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-04 10:41:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 10:41:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 10:41:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 10:41:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure bl_free_layout_hdr [2021-11-04 10:41:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_free_layout_hdr [2021-11-04 10:41:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 10:41:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 10:41:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 10:41:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-04 10:41:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-04 10:41:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure bl_put_extent [2021-11-04 10:41:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_put_extent [2021-11-04 10:41:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 10:41:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 10:41:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure clean_pnfs_block_layoutupdate [2021-11-04 10:41:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_pnfs_block_layoutupdate [2021-11-04 10:41:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 10:41:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 10:41:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 10:41:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure bl_cleanup_layoutcommit [2021-11-04 10:41:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_cleanup_layoutcommit [2021-11-04 10:41:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 10:41:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 10:41:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-04 10:41:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-04 10:41:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 10:41:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 10:41:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_read [2021-11-04 10:41:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_read [2021-11-04 10:41:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure bl_write_cleanup [2021-11-04 10:41:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_write_cleanup [2021-11-04 10:41:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 10:41:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 10:41:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 10:41:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure mark_extents_written [2021-11-04 10:41:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure mark_extents_written [2021-11-04 10:41:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure _front_merge [2021-11-04 10:41:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure _front_merge [2021-11-04 10:41:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure bl_find_get_extent [2021-11-04 10:41:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_find_get_extent [2021-11-04 10:41:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 10:41:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure put_parallel [2021-11-04 10:41:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure put_parallel [2021-11-04 10:41:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_write [2021-11-04 10:41:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_write [2021-11-04 10:41:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure release_extents [2021-11-04 10:41:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure release_extents [2021-11-04 10:41:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_write_zero [2021-11-04 10:41:47,526 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_write_zero [2021-11-04 10:41:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 10:41:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure set_to_rw [2021-11-04 10:41:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure set_to_rw [2021-11-04 10:41:58,361 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 10:41:58,361 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-04 10:41:58,362 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 10:41:58,362 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 10:41:58,363 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 10:41:58,365 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-04 10:41:58,365 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 10:41:58,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 10:41:58,417 INFO L299 CfgBuilder]: Removed 8152 assume(true) statements. [2021-11-04 10:41:58,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:41:58 BoogieIcfgContainer [2021-11-04 10:41:58,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 10:41:58,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 10:41:58,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 10:41:58,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 10:41:58,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:41:39" (1/3) ... [2021-11-04 10:41:58,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114408d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:41:58, skipping insertion in model container [2021-11-04 10:41:58,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:41:44" (2/3) ... [2021-11-04 10:41:58,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114408d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:41:58, skipping insertion in model container [2021-11-04 10:41:58,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:41:58" (3/3) ... [2021-11-04 10:41:58,437 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-04 10:41:58,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 10:41:58,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 137 error locations. [2021-11-04 10:41:58,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 10:41:58,529 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=PETRI_NET, 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 [2021-11-04 10:41:58,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 137 error locations. [2021-11-04 10:41:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 8724 states, 8489 states have (on average 1.423018023324302) internal successors, (12080), 8643 states have internal predecessors, (12080), 79 states have call successors, (79), 19 states have call predecessors, (79), 19 states have return successors, (79), 68 states have call predecessors, (79), 79 states have call successors, (79) [2021-11-04 10:41:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-04 10:41:58,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:41:58,695 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:41:58,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [bl_find_get_extentErr0ASSERT_VIOLATIONERROR_FUNCTION, bl_find_get_extentErr1ASSERT_VIOLATIONERROR_FUNCTION, clean_pnfs_block_layoutupdateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-04 10:41:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:41:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1399204513, now seen corresponding path program 1 times [2021-11-04 10:41:58,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:41:58,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870442408] [2021-11-04 10:41:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:41:58,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:41:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:41:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:41:59,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:41:59,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870442408] [2021-11-04 10:41:59,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870442408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:41:59,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:41:59,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:41:59,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845786107] [2021-11-04 10:41:59,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:41:59,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:41:59,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:41:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:41:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:41:59,730 INFO L87 Difference]: Start difference. First operand has 8724 states, 8489 states have (on average 1.423018023324302) internal successors, (12080), 8643 states have internal predecessors, (12080), 79 states have call successors, (79), 19 states have call predecessors, (79), 19 states have return successors, (79), 68 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-04 10:42:01,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:21,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:43:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:43:38,365 INFO L93 Difference]: Finished difference Result 23478 states and 32666 transitions. [2021-11-04 10:43:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:43:38,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2021-11-04 10:43:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:43:38,475 INFO L225 Difference]: With dead ends: 23478 [2021-11-04 10:43:38,475 INFO L226 Difference]: Without dead ends: 14407 [2021-11-04 10:43:38,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:38,519 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 9376 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 19370 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90019.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9379 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 19383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 207.85ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19370 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96070.44ms IncrementalHoareTripleChecker+Time [2021-11-04 10:43:38,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9379 Valid, 1171 Invalid, 19383 Unknown, 0 Unchecked, 207.85ms Time], IncrementalHoareTripleChecker [11 Valid, 19370 Invalid, 2 Unknown, 0 Unchecked, 96070.44ms Time] [2021-11-04 10:43:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2021-11-04 10:43:38,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 14245. [2021-11-04 10:43:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14245 states, 13912 states have (on average 1.280117883841288) internal successors, (17809), 14084 states have internal predecessors, (17809), 158 states have call successors, (158), 38 states have call predecessors, (158), 38 states have return successors, (161), 136 states have call predecessors, (161), 158 states have call successors, (161) [2021-11-04 10:43:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14245 states to 14245 states and 18128 transitions. [2021-11-04 10:43:39,084 INFO L78 Accepts]: Start accepts. Automaton has 14245 states and 18128 transitions. Word has length 125 [2021-11-04 10:43:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:43:39,093 INFO L470 AbstractCegarLoop]: Abstraction has 14245 states and 18128 transitions. [2021-11-04 10:43:39,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-04 10:43:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 14245 states and 18128 transitions. [2021-11-04 10:43:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-04 10:43:39,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:43:39,100 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:43:39,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 10:43:39,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting release_extentsErr0ASSERT_VIOLATIONERROR_FUNCTION === [bl_find_get_extentErr0ASSERT_VIOLATIONERROR_FUNCTION, bl_find_get_extentErr1ASSERT_VIOLATIONERROR_FUNCTION, clean_pnfs_block_layoutupdateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-04 10:43:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:43:39,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1209282611, now seen corresponding path program 1 times [2021-11-04 10:43:39,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:43:39,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425275571] [2021-11-04 10:43:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:43:39,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:43:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:43:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:43:39,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:43:39,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425275571] [2021-11-04 10:43:39,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425275571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:43:39,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:43:39,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:43:39,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655593905] [2021-11-04 10:43:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:43:39,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:43:39,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:43:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:43:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:43:39,505 INFO L87 Difference]: Start difference. First operand 14245 states and 18128 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:43:41,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:45:02,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:45:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:45:14,018 INFO L93 Difference]: Finished difference Result 29899 states and 38003 transitions. [2021-11-04 10:45:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:45:14,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-04 10:45:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:45:14,090 INFO L225 Difference]: With dead ends: 29899 [2021-11-04 10:45:14,091 INFO L226 Difference]: Without dead ends: 15930 [2021-11-04 10:45:14,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:45:14,129 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 5520 mSDsluCounter, 9416 mSDsCounter, 0 mSdLazyCounter, 18633 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87192.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 18642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 135.23ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18633 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92848.51ms IncrementalHoareTripleChecker+Time [2021-11-04 10:45:14,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5522 Valid, 370 Invalid, 18642 Unknown, 0 Unchecked, 135.23ms Time], IncrementalHoareTripleChecker [7 Valid, 18633 Invalid, 2 Unknown, 0 Unchecked, 92848.51ms Time] [2021-11-04 10:45:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15930 states. [2021-11-04 10:45:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15930 to 15584. [2021-11-04 10:45:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15584 states, 15203 states have (on average 1.2827731368808788) internal successors, (19502), 15385 states have internal predecessors, (19502), 187 states have call successors, (187), 57 states have call predecessors, (187), 57 states have return successors, (191), 160 states have call predecessors, (191), 187 states have call successors, (191) [2021-11-04 10:45:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15584 states to 15584 states and 19880 transitions. [2021-11-04 10:45:14,579 INFO L78 Accepts]: Start accepts. Automaton has 15584 states and 19880 transitions. Word has length 134 [2021-11-04 10:45:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:45:14,579 INFO L470 AbstractCegarLoop]: Abstraction has 15584 states and 19880 transitions. [2021-11-04 10:45:14,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:45:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 15584 states and 19880 transitions. [2021-11-04 10:45:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-04 10:45:14,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:45:14,582 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:45:14,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 10:45:14,582 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting release_extentsErr0ASSERT_VIOLATIONERROR_FUNCTION === [bl_find_get_extentErr0ASSERT_VIOLATIONERROR_FUNCTION, bl_find_get_extentErr1ASSERT_VIOLATIONERROR_FUNCTION, clean_pnfs_block_layoutupdateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-04 10:45:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:45:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash 769910935, now seen corresponding path program 1 times [2021-11-04 10:45:14,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:45:14,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536435723] [2021-11-04 10:45:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:45:14,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:45:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:45:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:45:14,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:45:14,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536435723] [2021-11-04 10:45:14,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536435723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:45:14,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:45:14,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:45:14,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938893058] [2021-11-04 10:45:14,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:45:14,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:45:14,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:45:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:45:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:45:14,908 INFO L87 Difference]: Start difference. First operand 15584 states and 19880 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:45:16,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:47:04,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:47:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:47:08,540 INFO L93 Difference]: Finished difference Result 32230 states and 41035 transitions. [2021-11-04 10:47:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:47:08,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-04 10:47:08,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:47:08,596 INFO L225 Difference]: With dead ends: 32230 [2021-11-04 10:47:08,597 INFO L226 Difference]: Without dead ends: 16922 [2021-11-04 10:47:08,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:47:08,642 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 5473 mSDsluCounter, 9417 mSDsCounter, 0 mSdLazyCounter, 23105 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104639.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5475 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 23114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 302.74ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23105 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111850.21ms IncrementalHoareTripleChecker+Time [2021-11-04 10:47:08,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5475 Valid, 424 Invalid, 23114 Unknown, 0 Unchecked, 302.74ms Time], IncrementalHoareTripleChecker [7 Valid, 23105 Invalid, 2 Unknown, 0 Unchecked, 111850.21ms Time] [2021-11-04 10:47:08,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16922 states. [2021-11-04 10:47:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16922 to 16574. [2021-11-04 10:47:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16574 states, 16193 states have (on average 1.2829617736058792) internal successors, (20775), 16375 states have internal predecessors, (20775), 187 states have call successors, (187), 57 states have call predecessors, (187), 57 states have return successors, (191), 160 states have call predecessors, (191), 187 states have call successors, (191) [2021-11-04 10:47:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16574 states to 16574 states and 21153 transitions. [2021-11-04 10:47:09,066 INFO L78 Accepts]: Start accepts. Automaton has 16574 states and 21153 transitions. Word has length 135 [2021-11-04 10:47:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:47:09,068 INFO L470 AbstractCegarLoop]: Abstraction has 16574 states and 21153 transitions. [2021-11-04 10:47:09,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:47:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 16574 states and 21153 transitions. [2021-11-04 10:47:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-04 10:47:09,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:47:09,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:47:09,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 10:47:09,073 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [bl_find_get_extentErr0ASSERT_VIOLATIONERROR_FUNCTION, bl_find_get_extentErr1ASSERT_VIOLATIONERROR_FUNCTION, clean_pnfs_block_layoutupdateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-04 10:47:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:47:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash 384070110, now seen corresponding path program 1 times [2021-11-04 10:47:09,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:47:09,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654756566] [2021-11-04 10:47:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:47:09,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:47:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:47:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:47:09,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:47:09,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654756566] [2021-11-04 10:47:09,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654756566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:47:09,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:47:09,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:47:09,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349188330] [2021-11-04 10:47:09,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:47:09,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:47:09,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:47:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:47:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:47:09,402 INFO L87 Difference]: Start difference. First operand 16574 states and 21153 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-11-04 10:47:11,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:49:28,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:49:30,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:49:35,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:49:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:49:37,940 INFO L93 Difference]: Finished difference Result 47774 states and 61152 transitions. [2021-11-04 10:49:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:49:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 157 [2021-11-04 10:49:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:49:38,046 INFO L225 Difference]: With dead ends: 47774 [2021-11-04 10:49:38,046 INFO L226 Difference]: Without dead ends: 31929 [2021-11-04 10:49:38,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:49:38,106 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 8911 mSDsluCounter, 9372 mSDsCounter, 0 mSdLazyCounter, 27246 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136049.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8911 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 27259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 182.85ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27246 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146290.38ms IncrementalHoareTripleChecker+Time [2021-11-04 10:49:38,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8911 Valid, 474 Invalid, 27259 Unknown, 0 Unchecked, 182.85ms Time], IncrementalHoareTripleChecker [10 Valid, 27246 Invalid, 3 Unknown, 0 Unchecked, 146290.38ms Time] [2021-11-04 10:49:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31929 states. [2021-11-04 10:49:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31929 to 31730. [2021-11-04 10:49:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31730 states, 31105 states have (on average 1.2853239029095) internal successors, (39980), 31333 states have internal predecessors, (39980), 374 states have call successors, (374), 114 states have call predecessors, (374), 114 states have return successors, (382), 320 states have call predecessors, (382), 374 states have call successors, (382) [2021-11-04 10:49:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31730 states to 31730 states and 40736 transitions. [2021-11-04 10:49:39,140 INFO L78 Accepts]: Start accepts. Automaton has 31730 states and 40736 transitions. Word has length 157 [2021-11-04 10:49:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:49:39,141 INFO L470 AbstractCegarLoop]: Abstraction has 31730 states and 40736 transitions. [2021-11-04 10:49:39,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-11-04 10:49:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 31730 states and 40736 transitions. [2021-11-04 10:49:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-04 10:49:39,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:49:39,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:49:39,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 10:49:39,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [bl_find_get_extentErr0ASSERT_VIOLATIONERROR_FUNCTION, bl_find_get_extentErr1ASSERT_VIOLATIONERROR_FUNCTION, clean_pnfs_block_layoutupdateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-04 10:49:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:49:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1353649086, now seen corresponding path program 1 times [2021-11-04 10:49:39,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:49:39,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950375991] [2021-11-04 10:49:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:49:39,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:49:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:49:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 10:49:39,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:49:39,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950375991] [2021-11-04 10:49:39,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950375991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:49:39,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:49:39,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:49:39,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385673849] [2021-11-04 10:49:39,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:49:39,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:49:39,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:49:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:49:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:49:39,629 INFO L87 Difference]: Start difference. First operand 31730 states and 40736 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-11-04 10:49:41,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:51:13,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:51:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:51:23,066 INFO L93 Difference]: Finished difference Result 33354 states and 42849 transitions. [2021-11-04 10:51:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:51:23,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 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 157 [2021-11-04 10:51:23,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:51:23,158 INFO L225 Difference]: With dead ends: 33354 [2021-11-04 10:51:23,158 INFO L226 Difference]: Without dead ends: 33348 [2021-11-04 10:51:23,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:51:23,187 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 9218 mSDsluCounter, 10522 mSDsCounter, 0 mSdLazyCounter, 19692 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94566.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9221 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 19746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 207.68ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 19692 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101854.38ms IncrementalHoareTripleChecker+Time [2021-11-04 10:51:23,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9221 Valid, 432 Invalid, 19746 Unknown, 0 Unchecked, 207.68ms Time], IncrementalHoareTripleChecker [52 Valid, 19692 Invalid, 2 Unknown, 0 Unchecked, 101854.38ms Time] [2021-11-04 10:51:23,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33348 states. [2021-11-04 10:51:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33348 to 33310. [2021-11-04 10:51:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33310 states, 32592 states have (on average 1.2870029455081002) internal successors, (41946), 32837 states have internal predecessors, (41946), 432 states have call successors, (432), 152 states have call predecessors, (432), 152 states have return successors, (446), 368 states have call predecessors, (446), 432 states have call successors, (446) [2021-11-04 10:51:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33310 states to 33310 states and 42824 transitions. [2021-11-04 10:51:23,961 INFO L78 Accepts]: Start accepts. Automaton has 33310 states and 42824 transitions. Word has length 157 [2021-11-04 10:51:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:51:23,962 INFO L470 AbstractCegarLoop]: Abstraction has 33310 states and 42824 transitions. [2021-11-04 10:51:23,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-11-04 10:51:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 33310 states and 42824 transitions. [2021-11-04 10:51:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-04 10:51:23,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:51:23,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:51:23,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 10:51:23,967 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [bl_find_get_extentErr0ASSERT_VIOLATIONERROR_FUNCTION, bl_find_get_extentErr1ASSERT_VIOLATIONERROR_FUNCTION, clean_pnfs_block_layoutupdateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-04 10:51:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:51:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 518591365, now seen corresponding path program 1 times [2021-11-04 10:51:23,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:51:23,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349538557] [2021-11-04 10:51:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:51:23,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:51:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:51:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 10:51:24,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:51:24,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349538557] [2021-11-04 10:51:24,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349538557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:51:24,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:51:24,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:51:24,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440746768] [2021-11-04 10:51:24,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:51:24,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:51:24,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:51:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:51:24,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:51:24,413 INFO L87 Difference]: Start difference. First operand 33310 states and 42824 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 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) [2021-11-04 10:51:26,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:52:59,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:53:08,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:53:08,803 INFO L93 Difference]: Finished difference Result 33348 states and 42843 transitions. [2021-11-04 10:53:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:53:08,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 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 159 [2021-11-04 10:53:08,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:53:08,864 INFO L225 Difference]: With dead ends: 33348 [2021-11-04 10:53:08,864 INFO L226 Difference]: Without dead ends: 33342 [2021-11-04 10:53:08,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:53:08,882 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 9207 mSDsluCounter, 10519 mSDsCounter, 0 mSdLazyCounter, 19680 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94729.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9210 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 19737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 170.41ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 19680 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102622.55ms IncrementalHoareTripleChecker+Time [2021-11-04 10:53:08,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9210 Valid, 432 Invalid, 19737 Unknown, 0 Unchecked, 170.41ms Time], IncrementalHoareTripleChecker [55 Valid, 19680 Invalid, 2 Unknown, 0 Unchecked, 102622.55ms Time] [2021-11-04 10:53:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33342 states. [2021-11-04 10:53:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33342 to 33304. [2021-11-04 10:53:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33304 states, 32589 states have (on average 1.2869373101353216) internal successors, (41940), 32831 states have internal predecessors, (41940), 432 states have call successors, (432), 152 states have call predecessors, (432), 152 states have return successors, (446), 368 states have call predecessors, (446), 432 states have call successors, (446) [2021-11-04 10:53:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33304 states to 33304 states and 42818 transitions. [2021-11-04 10:53:09,588 INFO L78 Accepts]: Start accepts. Automaton has 33304 states and 42818 transitions. Word has length 159 [2021-11-04 10:53:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:53:09,589 INFO L470 AbstractCegarLoop]: Abstraction has 33304 states and 42818 transitions. [2021-11-04 10:53:09,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 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) [2021-11-04 10:53:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 33304 states and 42818 transitions. [2021-11-04 10:53:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-04 10:53:09,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:53:09,593 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:53:09,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 10:53:09,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [bl_find_get_extentErr0ASSERT_VIOLATIONERROR_FUNCTION, bl_find_get_extentErr1ASSERT_VIOLATIONERROR_FUNCTION, clean_pnfs_block_layoutupdateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-04 10:53:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:53:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash 150368072, now seen corresponding path program 1 times [2021-11-04 10:53:09,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:53:09,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811480922] [2021-11-04 10:53:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:53:09,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:53:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:53:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 10:53:09,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:53:09,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811480922] [2021-11-04 10:53:09,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811480922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:53:09,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:53:09,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:53:09,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063214757] [2021-11-04 10:53:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:53:09,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:53:09,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:53:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:53:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:53:09,952 INFO L87 Difference]: Start difference. First operand 33304 states and 42818 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-04 10:53:12,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:54:44,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:54:53,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:54:53,960 INFO L93 Difference]: Finished difference Result 33342 states and 42837 transitions. [2021-11-04 10:54:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 10:54:53,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 161 [2021-11-04 10:54:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:54:54,019 INFO L225 Difference]: With dead ends: 33342 [2021-11-04 10:54:54,020 INFO L226 Difference]: Without dead ends: 33336 [2021-11-04 10:54:54,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:54:54,035 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 9199 mSDsluCounter, 10516 mSDsCounter, 0 mSdLazyCounter, 19668 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93876.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9202 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 19725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 158.57ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 19668 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102384.70ms IncrementalHoareTripleChecker+Time [2021-11-04 10:54:54,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9202 Valid, 432 Invalid, 19725 Unknown, 0 Unchecked, 158.57ms Time], IncrementalHoareTripleChecker [55 Valid, 19668 Invalid, 2 Unknown, 0 Unchecked, 102384.70ms Time] [2021-11-04 10:54:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33336 states. [2021-11-04 10:54:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33336 to 33298. [2021-11-04 10:54:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33298 states, 32586 states have (on average 1.2868716626772234) internal successors, (41934), 32825 states have internal predecessors, (41934), 432 states have call successors, (432), 152 states have call predecessors, (432), 152 states have return successors, (446), 368 states have call predecessors, (446), 432 states have call successors, (446) [2021-11-04 10:54:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33298 states to 33298 states and 42812 transitions. [2021-11-04 10:54:54,815 INFO L78 Accepts]: Start accepts. Automaton has 33298 states and 42812 transitions. Word has length 161 [2021-11-04 10:54:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:54:54,816 INFO L470 AbstractCegarLoop]: Abstraction has 33298 states and 42812 transitions. [2021-11-04 10:54:54,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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) [2021-11-04 10:54:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 33298 states and 42812 transitions. [2021-11-04 10:54:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-04 10:54:54,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:54:54,820 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:54:54,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 10:54:54,820 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [bl_find_get_extentErr0ASSERT_VIOLATIONERROR_FUNCTION, bl_find_get_extentErr1ASSERT_VIOLATIONERROR_FUNCTION, clean_pnfs_block_layoutupdateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 134 more)] === [2021-11-04 10:54:54,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:54:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1524897909, now seen corresponding path program 1 times [2021-11-04 10:54:54,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:54:54,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131740595] [2021-11-04 10:54:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:54:54,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:54:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:54:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 10:54:55,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:54:55,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131740595] [2021-11-04 10:54:55,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131740595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:54:55,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:54:55,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:54:55,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256412812] [2021-11-04 10:54:55,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:54:55,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:54:55,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:54:55,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:54:55,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:54:55,454 INFO L87 Difference]: Start difference. First operand 33298 states and 42812 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-04 10:54:57,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15