./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 4d014703 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-4d01470 [2021-11-03 01:00:58,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 01:00:58,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 01:00:58,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 01:00:58,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 01:00:58,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 01:00:58,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 01:00:58,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 01:00:58,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 01:00:58,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 01:00:58,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 01:00:58,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 01:00:58,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 01:00:58,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 01:00:58,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 01:00:58,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 01:00:58,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 01:00:58,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 01:00:58,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 01:00:58,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 01:00:58,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 01:00:58,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 01:00:58,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 01:00:58,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 01:00:58,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 01:00:58,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 01:00:58,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 01:00:58,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 01:00:58,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 01:00:58,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 01:00:58,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 01:00:58,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 01:00:58,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 01:00:58,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 01:00:58,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 01:00:58,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 01:00:58,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 01:00:58,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 01:00:58,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 01:00:58,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 01:00:58,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 01:00:58,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 01:00:58,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 01:00:58,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 01:00:58,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 01:00:58,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 01:00:58,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 01:00:58,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 01:00:58,344 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 01:00:58,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 01:00:58,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 01:00:58,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 01:00:58,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 01:00:58,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 01:00:58,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 01:00:58,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 01:00:58,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 01:00:58,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 01:00:58,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 01:00:58,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 01:00:58,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 01:00:58,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 01:00:58,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 01:00:58,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 01:00:58,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 01:00:58,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 01:00:58,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 01:00:58,348 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 01:00:58,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 01:00:58,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 01:00:58,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 01:00:58,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c [2021-11-03 01:00:58,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 01:00:58,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 01:00:58,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 01:00:58,640 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 01:00:58,641 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 01:00:58,642 INFO L432 ainManager$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 [2021-11-03 01:00:58,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accfcd1ea/324a9f67e8464434a1a4e514caff7252/FLAG6b30fa38c [2021-11-03 01:00:59,492 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 01:00:59,492 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 [2021-11-03 01:00:59,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accfcd1ea/324a9f67e8464434a1a4e514caff7252/FLAG6b30fa38c [2021-11-03 01:01:00,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accfcd1ea/324a9f67e8464434a1a4e514caff7252 [2021-11-03 01:01:00,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 01:01:00,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 01:01:00,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 01:01:00,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 01:01:00,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 01:01:00,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:01:00" (1/1) ... [2021-11-03 01:01:00,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dc7986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:00, skipping insertion in model container [2021-11-03 01:01:00,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:01:00" (1/1) ... [2021-11-03 01:01:00,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 01:01:00,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 01:01:05,655 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] [2021-11-03 01:01:05,658 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] [2021-11-03 01:01:05,659 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] [2021-11-03 01:01:05,659 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] [2021-11-03 01:01:05,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 01:01:05,699 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 01:01:06,135 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] [2021-11-03 01:01:06,136 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] [2021-11-03 01:01:06,136 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] [2021-11-03 01:01:06,136 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] [2021-11-03 01:01:06,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 01:01:06,233 INFO L208 MainTranslator]: Completed translation [2021-11-03 01:01:06,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06 WrapperNode [2021-11-03 01:01:06,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 01:01:06,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 01:01:06,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 01:01:06,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 01:01:06,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:06,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:07,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 01:01:07,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 01:01:07,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 01:01:07,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 01:01:07,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:07,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:07,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:07,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:07,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:07,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:08,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:08,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 01:01:08,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 01:01:08,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 01:01:08,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 01:01:08,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (1/1) ... [2021-11-03 01:01:08,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 01:01:08,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 01:01:08,441 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) [2021-11-03 01:01:08,480 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 [2021-11-03 01:01:08,518 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_parallel [2021-11-03 01:01:08,520 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_parallel [2021-11-03 01:01:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-03 01:01:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-03 01:01:08,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-03 01:01:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 01:01:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-03 01:01:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 01:01:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure bl_free_layout_hdr [2021-11-03 01:01:08,521 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_free_layout_hdr [2021-11-03 01:01:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 01:01:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 01:01:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 01:01:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-03 01:01:08,522 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-03 01:01:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure bl_put_extent [2021-11-03 01:01:08,522 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_put_extent [2021-11-03 01:01:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 01:01:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 01:01:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure clean_pnfs_block_layoutupdate [2021-11-03 01:01:08,522 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_pnfs_block_layoutupdate [2021-11-03 01:01:08,523 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 01:01:08,523 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-03 01:01:08,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-03 01:01:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure bl_cleanup_layoutcommit [2021-11-03 01:01:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_cleanup_layoutcommit [2021-11-03 01:01:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 01:01:08,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 01:01:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-03 01:01:08,540 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-03 01:01:08,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 01:01:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 01:01:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_read [2021-11-03 01:01:08,541 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_read [2021-11-03 01:01:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure bl_write_cleanup [2021-11-03 01:01:08,541 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_write_cleanup [2021-11-03 01:01:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 01:01:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 01:01:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 01:01:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure mark_extents_written [2021-11-03 01:01:08,542 INFO L138 BoogieDeclarations]: Found implementation of procedure mark_extents_written [2021-11-03 01:01:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure _front_merge [2021-11-03 01:01:08,542 INFO L138 BoogieDeclarations]: Found implementation of procedure _front_merge [2021-11-03 01:01:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure bl_find_get_extent [2021-11-03 01:01:08,543 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_find_get_extent [2021-11-03 01:01:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 01:01:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure put_parallel [2021-11-03 01:01:08,543 INFO L138 BoogieDeclarations]: Found implementation of procedure put_parallel [2021-11-03 01:01:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_write [2021-11-03 01:01:08,543 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_write [2021-11-03 01:01:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure release_extents [2021-11-03 01:01:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure release_extents [2021-11-03 01:01:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_write_zero [2021-11-03 01:01:08,545 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_write_zero [2021-11-03 01:01:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 01:01:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure set_to_rw [2021-11-03 01:01:08,546 INFO L138 BoogieDeclarations]: Found implementation of procedure set_to_rw [2021-11-03 01:01:18,197 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 01:01:18,197 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-03 01:01:18,197 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 01:01:18,198 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 01:01:18,198 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 01:01:18,199 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-03 01:01:18,199 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 01:01:18,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 01:01:18,243 INFO L299 CfgBuilder]: Removed 8152 assume(true) statements. [2021-11-03 01:01:18,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:01:18 BoogieIcfgContainer [2021-11-03 01:01:18,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 01:01:18,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 01:01:18,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 01:01:18,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 01:01:18,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:01:00" (1/3) ... [2021-11-03 01:01:18,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a742ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:01:18, skipping insertion in model container [2021-11-03 01:01:18,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:01:06" (2/3) ... [2021-11-03 01:01:18,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a742ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:01:18, skipping insertion in model container [2021-11-03 01:01:18,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:01:18" (3/3) ... [2021-11-03 01:01:18,258 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2021-11-03 01:01:18,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 01:01:18,262 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 137 error locations. [2021-11-03 01:01:18,323 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 01:01:18,328 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 [2021-11-03 01:01:18,329 INFO L340 AbstractCegarLoop]: Starting to check reachability of 137 error locations. [2021-11-03 01:01:18,438 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) [2021-11-03 01:01:18,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-03 01:01:18,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:01:18,461 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] [2021-11-03 01:01:18,461 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)] === [2021-11-03 01:01:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:01:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1399204513, now seen corresponding path program 1 times [2021-11-03 01:01:18,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:01:18,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902628643] [2021-11-03 01:01:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:01:18,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:01:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:01:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 01:01:19,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:01:19,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902628643] [2021-11-03 01:01:19,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902628643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:01:19,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:01:19,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:01:19,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909461959] [2021-11-03 01:01:19,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 01:01:19,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:01:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 01:01:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:01:19,247 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) [2021-11-03 01:01:21,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:02:47,472 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 [] [2021-11-03 01:03:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:03:04,083 INFO L93 Difference]: Finished difference Result 23478 states and 32666 transitions. [2021-11-03 01:03:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 01:03:04,095 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 [2021-11-03 01:03:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:03:04,184 INFO L225 Difference]: With dead ends: 23478 [2021-11-03 01:03:04,185 INFO L226 Difference]: Without dead ends: 14407 [2021-11-03 01:03:04,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:03:04,228 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 9376 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 19370 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95384.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9379 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 19383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 221.78ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19370 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101926.46ms IncrementalHoareTripleChecker+Time [2021-11-03 01:03:04,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9379 Valid, 1171 Invalid, 19383 Unknown, 0 Unchecked, 221.78ms Time], IncrementalHoareTripleChecker [11 Valid, 19370 Invalid, 2 Unknown, 0 Unchecked, 101926.46ms Time] [2021-11-03 01:03:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2021-11-03 01:03:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 14245. [2021-11-03 01:03:04,658 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) [2021-11-03 01:03:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14245 states to 14245 states and 18128 transitions. [2021-11-03 01:03:04,715 INFO L78 Accepts]: Start accepts. Automaton has 14245 states and 18128 transitions. Word has length 125 [2021-11-03 01:03:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:03:04,719 INFO L470 AbstractCegarLoop]: Abstraction has 14245 states and 18128 transitions. [2021-11-03 01:03:04,724 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) [2021-11-03 01:03:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 14245 states and 18128 transitions. [2021-11-03 01:03:04,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 01:03:04,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:03:04,730 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] [2021-11-03 01:03:04,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 01:03:04,730 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)] === [2021-11-03 01:03:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:03:04,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1209282611, now seen corresponding path program 1 times [2021-11-03 01:03:04,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:03:04,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730653070] [2021-11-03 01:03:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:03:04,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:03:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:03:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 01:03:05,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:03:05,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730653070] [2021-11-03 01:03:05,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730653070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:03:05,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:03:05,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:03:05,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573129117] [2021-11-03 01:03:05,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 01:03:05,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:03:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 01:03:05,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:03:05,037 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) [2021-11-03 01:03:07,096 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 [] [2021-11-03 01:04:13,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:04:22,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:04:40,455 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 [] [2021-11-03 01:04:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:04:52,423 INFO L93 Difference]: Finished difference Result 29899 states and 38003 transitions. [2021-11-03 01:04:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 01:04:52,423 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 [2021-11-03 01:04:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:04:52,478 INFO L225 Difference]: With dead ends: 29899 [2021-11-03 01:04:52,479 INFO L226 Difference]: Without dead ends: 15930 [2021-11-03 01:04:52,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:04:52,514 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 5520 mSDsluCounter, 9415 mSDsCounter, 0 mSdLazyCounter, 18630 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99017.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 18641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 152.60ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18630 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105630.92ms IncrementalHoareTripleChecker+Time [2021-11-03 01:04:52,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5522 Valid, 370 Invalid, 18641 Unknown, 0 Unchecked, 152.60ms Time], IncrementalHoareTripleChecker [7 Valid, 18630 Invalid, 4 Unknown, 0 Unchecked, 105630.92ms Time] [2021-11-03 01:04:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15930 states. [2021-11-03 01:04:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15930 to 15584. [2021-11-03 01:04:52,819 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) [2021-11-03 01:04:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15584 states to 15584 states and 19880 transitions. [2021-11-03 01:04:52,850 INFO L78 Accepts]: Start accepts. Automaton has 15584 states and 19880 transitions. Word has length 134 [2021-11-03 01:04:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:04:52,850 INFO L470 AbstractCegarLoop]: Abstraction has 15584 states and 19880 transitions. [2021-11-03 01:04:52,850 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) [2021-11-03 01:04:52,851 INFO L276 IsEmpty]: Start isEmpty. Operand 15584 states and 19880 transitions. [2021-11-03 01:04:52,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 01:04:52,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:04:52,853 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] [2021-11-03 01:04:52,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 01:04:52,853 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)] === [2021-11-03 01:04:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:04:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash 769910935, now seen corresponding path program 1 times [2021-11-03 01:04:52,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:04:52,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250852142] [2021-11-03 01:04:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:04:52,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:04:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:04:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 01:04:53,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:04:53,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250852142] [2021-11-03 01:04:53,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250852142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:04:53,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:04:53,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:04:53,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975323873] [2021-11-03 01:04:53,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 01:04:53,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:04:53,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 01:04:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:04:53,211 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) [2021-11-03 01:04:55,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:06:52,054 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 [] [2021-11-03 01:06:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:06:56,115 INFO L93 Difference]: Finished difference Result 32230 states and 41035 transitions. [2021-11-03 01:06:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 01:06:56,116 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 [2021-11-03 01:06:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:06:56,162 INFO L225 Difference]: With dead ends: 32230 [2021-11-03 01:06:56,162 INFO L226 Difference]: Without dead ends: 16922 [2021-11-03 01:06:56,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:06:56,185 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 5473 mSDsluCounter, 9417 mSDsCounter, 0 mSdLazyCounter, 23105 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113324.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5475 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 23114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 175.91ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23105 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121151.60ms IncrementalHoareTripleChecker+Time [2021-11-03 01:06:56,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5475 Valid, 424 Invalid, 23114 Unknown, 0 Unchecked, 175.91ms Time], IncrementalHoareTripleChecker [7 Valid, 23105 Invalid, 2 Unknown, 0 Unchecked, 121151.60ms Time] [2021-11-03 01:06:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16922 states. [2021-11-03 01:06:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16922 to 16574. [2021-11-03 01:06:56,468 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) [2021-11-03 01:06:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16574 states to 16574 states and 21153 transitions. [2021-11-03 01:06:56,497 INFO L78 Accepts]: Start accepts. Automaton has 16574 states and 21153 transitions. Word has length 135 [2021-11-03 01:06:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:06:56,499 INFO L470 AbstractCegarLoop]: Abstraction has 16574 states and 21153 transitions. [2021-11-03 01:06:56,499 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) [2021-11-03 01:06:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 16574 states and 21153 transitions. [2021-11-03 01:06:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-03 01:06:56,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:06:56,502 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] [2021-11-03 01:06:56,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 01:06:56,502 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)] === [2021-11-03 01:06:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:06:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash 384070110, now seen corresponding path program 1 times [2021-11-03 01:06:56,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:06:56,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87179833] [2021-11-03 01:06:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:06:56,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:06:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:06:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 01:06:56,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:06:56,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87179833] [2021-11-03 01:06:56,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87179833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:06:56,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:06:56,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:06:56,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533829086] [2021-11-03 01:06:56,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 01:06:56,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:06:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 01:06:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:06:56,753 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) [2021-11-03 01:06:58,814 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 [] [2021-11-03 01:09:16,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:09:18,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:09:22,646 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 [] [2021-11-03 01:09:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:09:25,270 INFO L93 Difference]: Finished difference Result 47774 states and 61152 transitions. [2021-11-03 01:09:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 01:09:25,270 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 [2021-11-03 01:09:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:09:25,360 INFO L225 Difference]: With dead ends: 47774 [2021-11-03 01:09:25,360 INFO L226 Difference]: Without dead ends: 31929 [2021-11-03 01:09:25,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 01:09:25,394 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 8911 mSDsluCounter, 9372 mSDsCounter, 0 mSdLazyCounter, 27246 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135655.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8911 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 27259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 210.84ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27246 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146102.63ms IncrementalHoareTripleChecker+Time [2021-11-03 01:09:25,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8911 Valid, 474 Invalid, 27259 Unknown, 0 Unchecked, 210.84ms Time], IncrementalHoareTripleChecker [10 Valid, 27246 Invalid, 3 Unknown, 0 Unchecked, 146102.63ms Time] [2021-11-03 01:09:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31929 states. [2021-11-03 01:09:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31929 to 31730. [2021-11-03 01:09:25,991 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) [2021-11-03 01:09:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31730 states to 31730 states and 40736 transitions. [2021-11-03 01:09:26,067 INFO L78 Accepts]: Start accepts. Automaton has 31730 states and 40736 transitions. Word has length 157 [2021-11-03 01:09:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:09:26,067 INFO L470 AbstractCegarLoop]: Abstraction has 31730 states and 40736 transitions. [2021-11-03 01:09:26,067 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) [2021-11-03 01:09:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 31730 states and 40736 transitions. [2021-11-03 01:09:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-03 01:09:26,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:09:26,070 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] [2021-11-03 01:09:26,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 01:09:26,071 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)] === [2021-11-03 01:09:26,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:09:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1353649086, now seen corresponding path program 1 times [2021-11-03 01:09:26,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:09:26,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722515291] [2021-11-03 01:09:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:09:26,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:09:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:09:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 01:09:26,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:09:26,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722515291] [2021-11-03 01:09:26,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722515291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:09:26,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:09:26,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:09:26,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878743394] [2021-11-03 01:09:26,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 01:09:26,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:09:26,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 01:09:26,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 01:09:26,614 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) [2021-11-03 01:09:28,672 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 [] [2021-11-03 01:11:03,237 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 [] [2021-11-03 01:11:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:11:12,806 INFO L93 Difference]: Finished difference Result 33354 states and 42849 transitions. [2021-11-03 01:11:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 01:11:12,806 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 [2021-11-03 01:11:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:11:12,890 INFO L225 Difference]: With dead ends: 33354 [2021-11-03 01:11:12,890 INFO L226 Difference]: Without dead ends: 33348 [2021-11-03 01:11:12,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 01:11:12,910 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 9218 mSDsluCounter, 10522 mSDsCounter, 0 mSdLazyCounter, 19692 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96779.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9221 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 19746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 229.18ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 19692 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104450.78ms IncrementalHoareTripleChecker+Time [2021-11-03 01:11:12,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9221 Valid, 432 Invalid, 19746 Unknown, 0 Unchecked, 229.18ms Time], IncrementalHoareTripleChecker [52 Valid, 19692 Invalid, 2 Unknown, 0 Unchecked, 104450.78ms Time] [2021-11-03 01:11:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33348 states. [2021-11-03 01:11:13,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33348 to 33310. [2021-11-03 01:11:13,638 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) [2021-11-03 01:11:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33310 states to 33310 states and 42824 transitions. [2021-11-03 01:11:13,721 INFO L78 Accepts]: Start accepts. Automaton has 33310 states and 42824 transitions. Word has length 157 [2021-11-03 01:11:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:11:13,721 INFO L470 AbstractCegarLoop]: Abstraction has 33310 states and 42824 transitions. [2021-11-03 01:11:13,721 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) [2021-11-03 01:11:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 33310 states and 42824 transitions. [2021-11-03 01:11:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-03 01:11:13,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:11:13,725 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] [2021-11-03 01:11:13,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 01:11:13,726 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)] === [2021-11-03 01:11:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:11:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash 518591365, now seen corresponding path program 1 times [2021-11-03 01:11:13,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:11:13,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364418734] [2021-11-03 01:11:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:11:13,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:11:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:11:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 01:11:14,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:11:14,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364418734] [2021-11-03 01:11:14,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364418734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:11:14,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:11:14,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:11:14,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650428679] [2021-11-03 01:11:14,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 01:11:14,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:11:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 01:11:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 01:11:14,080 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) [2021-11-03 01:11:16,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 01:12:55,061 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 [] [2021-11-03 01:13:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 01:13:06,000 INFO L93 Difference]: Finished difference Result 33348 states and 42843 transitions. [2021-11-03 01:13:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 01:13:06,001 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 [2021-11-03 01:13:06,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 01:13:06,091 INFO L225 Difference]: With dead ends: 33348 [2021-11-03 01:13:06,091 INFO L226 Difference]: Without dead ends: 33342 [2021-11-03 01:13:06,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 01:13:06,115 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 9207 mSDsluCounter, 10519 mSDsCounter, 0 mSdLazyCounter, 19680 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101624.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9210 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 19737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 198.73ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 19680 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110079.95ms IncrementalHoareTripleChecker+Time [2021-11-03 01:13:06,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9210 Valid, 432 Invalid, 19737 Unknown, 0 Unchecked, 198.73ms Time], IncrementalHoareTripleChecker [55 Valid, 19680 Invalid, 2 Unknown, 0 Unchecked, 110079.95ms Time] [2021-11-03 01:13:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33342 states. [2021-11-03 01:13:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33342 to 33304. [2021-11-03 01:13:07,079 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) [2021-11-03 01:13:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33304 states to 33304 states and 42818 transitions. [2021-11-03 01:13:07,150 INFO L78 Accepts]: Start accepts. Automaton has 33304 states and 42818 transitions. Word has length 159 [2021-11-03 01:13:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 01:13:07,150 INFO L470 AbstractCegarLoop]: Abstraction has 33304 states and 42818 transitions. [2021-11-03 01:13:07,150 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) [2021-11-03 01:13:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 33304 states and 42818 transitions. [2021-11-03 01:13:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-03 01:13:07,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 01:13:07,154 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] [2021-11-03 01:13:07,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 01:13:07,154 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)] === [2021-11-03 01:13:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 01:13:07,154 INFO L85 PathProgramCache]: Analyzing trace with hash 150368072, now seen corresponding path program 1 times [2021-11-03 01:13:07,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 01:13:07,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270589233] [2021-11-03 01:13:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 01:13:07,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 01:13:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 01:13:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 01:13:07,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 01:13:07,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270589233] [2021-11-03 01:13:07,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270589233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 01:13:07,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 01:13:07,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 01:13:07,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915203153] [2021-11-03 01:13:07,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 01:13:07,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 01:13:07,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 01:13:07,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 01:13:07,476 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) [2021-11-03 01:13:09,542 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 [] [2021-11-03 01:13:27,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15