./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.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 bc38af6d85a1ea18be4ba0c188eed765e9a84460b9b23510e792660c4b3625d7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 04:03:15,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 04:03:15,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 04:03:15,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 04:03:15,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 04:03:15,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 04:03:15,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 04:03:15,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 04:03:15,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 04:03:15,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 04:03:15,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 04:03:15,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 04:03:15,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 04:03:15,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 04:03:15,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 04:03:15,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 04:03:15,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 04:03:15,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 04:03:15,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 04:03:15,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 04:03:15,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 04:03:15,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 04:03:15,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 04:03:15,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 04:03:15,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 04:03:15,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 04:03:15,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 04:03:15,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 04:03:15,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 04:03:15,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 04:03:15,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 04:03:15,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 04:03:15,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 04:03:15,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 04:03:15,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 04:03:15,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 04:03:15,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 04:03:15,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 04:03:15,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 04:03:15,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 04:03:15,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 04:03:15,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 04:03:15,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 04:03:15,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 04:03:15,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 04:03:15,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 04:03:15,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 04:03:15,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 04:03:15,432 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 04:03:15,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 04:03:15,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 04:03:15,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 04:03:15,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 04:03:15,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 04:03:15,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 04:03:15,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 04:03:15,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 04:03:15,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 04:03:15,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 04:03:15,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 04:03:15,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 04:03:15,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 04:03:15,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 04:03:15,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 04:03:15,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 04:03:15,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 04:03:15,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 04:03:15,436 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 04:03:15,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 04:03:15,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 04:03:15,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 04:03:15,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc38af6d85a1ea18be4ba0c188eed765e9a84460b9b23510e792660c4b3625d7 [2021-11-23 04:03:15,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 04:03:15,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 04:03:15,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 04:03:15,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 04:03:15,646 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 04:03:15,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2021-11-23 04:03:15,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40c51a8fa/6fed615506d744fea0e8e55258559052/FLAG19000f363 [2021-11-23 04:03:16,402 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 04:03:16,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2021-11-23 04:03:16,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40c51a8fa/6fed615506d744fea0e8e55258559052/FLAG19000f363 [2021-11-23 04:03:16,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40c51a8fa/6fed615506d744fea0e8e55258559052 [2021-11-23 04:03:16,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 04:03:16,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 04:03:16,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 04:03:16,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 04:03:16,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 04:03:16,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:03:16" (1/1) ... [2021-11-23 04:03:16,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28874d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:16, skipping insertion in model container [2021-11-23 04:03:16,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:03:16" (1/1) ... [2021-11-23 04:03:16,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 04:03:16,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 04:03:20,467 WARN L230 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552482,552495] [2021-11-23 04:03:20,470 WARN L230 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552651,552664] [2021-11-23 04:03:20,470 WARN L230 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552818,552831] [2021-11-23 04:03:20,470 WARN L230 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552986,552999] [2021-11-23 04:03:20,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 04:03:20,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 04:03:20,916 WARN L230 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552482,552495] [2021-11-23 04:03:20,917 WARN L230 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552651,552664] [2021-11-23 04:03:20,918 WARN L230 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552818,552831] [2021-11-23 04:03:20,919 WARN L230 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552986,552999] [2021-11-23 04:03:20,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 04:03:21,281 INFO L208 MainTranslator]: Completed translation [2021-11-23 04:03:21,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21 WrapperNode [2021-11-23 04:03:21,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 04:03:21,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 04:03:21,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 04:03:21,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 04:03:21,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:21,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:27,862 INFO L137 Inliner]: procedures = 703, calls = 5887, calls flagged for inlining = 1486, calls inlined = 43984, statements flattened = 453401 [2021-11-23 04:03:27,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 04:03:27,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 04:03:27,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 04:03:27,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 04:03:27,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:27,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:29,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:29,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:32,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:33,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:34,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:35,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 04:03:35,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 04:03:35,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 04:03:35,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 04:03:35,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (1/1) ... [2021-11-23 04:03:35,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 04:03:35,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 04:03:35,536 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) [2021-11-23 04:03:35,555 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 [2021-11-23 04:03:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 04:03:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 04:03:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-23 04:03:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-23 04:03:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 04:03:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 04:03:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_remove [2021-11-23 04:03:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_remove [2021-11-23 04:03:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 04:03:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 04:03:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 04:03:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 04:03:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 04:03:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 04:03:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 04:03:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure __pch_gbe_suspend [2021-11-23 04:03:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __pch_gbe_suspend [2021-11-23 04:03:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 04:03:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 04:03:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_stop_14_2 [2021-11-23 04:03:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_stop_14_2 [2021-11-23 04:03:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_stop [2021-11-23 04:03:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_stop [2021-11-23 04:03:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 04:03:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 04:03:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 04:03:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_down_phy [2021-11-23 04:03:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_down_phy [2021-11-23 04:03:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 04:03:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_phy_hw_reset [2021-11-23 04:03:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_phy_hw_reset [2021-11-23 04:03:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_shutdown [2021-11-23 04:03:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_shutdown [2021-11-23 04:03:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_95 [2021-11-23 04:03:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_95 [2021-11-23 04:03:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 04:03:36,966 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 04:03:36,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 04:08:21,742 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#1: ldv_switch_2_#res#1 := 0; [2021-11-23 04:08:21,742 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res#1 := 0; [2021-11-23 04:08:21,742 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res#1 := 0; [2021-11-23 04:08:21,742 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res#1 := 0; [2021-11-23 04:08:21,761 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#1: ldv_switch_3_#res#1 := 0; [2021-11-23 04:08:21,764 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#1: ldv_switch_4_#res#1 := 0; [2021-11-23 04:08:21,764 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res#1 := 0; [2021-11-23 04:08:21,764 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 04:08:21,764 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 04:08:21,772 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break#1: ldv_switch_5_#res#1 := 0; [2021-11-23 04:08:21,772 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break#2: ldv_switch_5_#res#1 := 0; [2021-11-23 04:08:21,779 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 04:08:21,780 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-23 04:08:21,780 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 04:08:21,782 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 04:08:26,943 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 04:08:27,107 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 04:08:27,108 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 04:08:27,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:08:27 BoogieIcfgContainer [2021-11-23 04:08:27,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 04:08:27,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 04:08:27,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 04:08:27,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 04:08:27,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:03:16" (1/3) ... [2021-11-23 04:08:27,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8622ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:08:27, skipping insertion in model container [2021-11-23 04:08:27,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:21" (2/3) ... [2021-11-23 04:08:27,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8622ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:08:27, skipping insertion in model container [2021-11-23 04:08:27,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:08:27" (3/3) ... [2021-11-23 04:08:27,176 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2021-11-23 04:08:27,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 04:08:27,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2620 error locations. [2021-11-23 04:08:27,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 04:08:27,409 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 [2021-11-23 04:08:27,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2620 error locations. [2021-11-23 04:08:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 90348 states, 87587 states have (on average 1.3242376151712012) internal successors, (115986), 90232 states have internal predecessors, (115986), 131 states have call successors, (131), 10 states have call predecessors, (131), 10 states have return successors, (131), 130 states have call predecessors, (131), 131 states have call successors, (131) [2021-11-23 04:08:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 04:08:28,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:08:28,245 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] [2021-11-23 04:08:28,245 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [pch_gbe_stopErr0ASSERT_VIOLATIONERROR_FUNCTION, pch_gbe_stopErr1ASSERT_VIOLATIONERROR_FUNCTION, pch_gbe_stopErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2617 more)] === [2021-11-23 04:08:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:08:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1058972244, now seen corresponding path program 1 times [2021-11-23 04:08:28,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 04:08:28,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214608955] [2021-11-23 04:08:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:08:28,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:08:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:08:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:08:29,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 04:08:29,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214608955] [2021-11-23 04:08:29,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214608955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:08:29,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:08:29,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 04:08:29,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374841934] [2021-11-23 04:08:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:08:29,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 04:08:29,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 04:08:29,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 04:08:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:08:29,458 INFO L87 Difference]: Start difference. First operand has 90348 states, 87587 states have (on average 1.3242376151712012) internal successors, (115986), 90232 states have internal predecessors, (115986), 131 states have call successors, (131), 10 states have call predecessors, (131), 10 states have return successors, (131), 130 states have call predecessors, (131), 131 states have call successors, (131) Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-23 04:08:34,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:08:34,655 INFO L93 Difference]: Finished difference Result 270293 states and 348054 transitions. [2021-11-23 04:08:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 04:08:34,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-11-23 04:08:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:08:35,341 INFO L225 Difference]: With dead ends: 270293 [2021-11-23 04:08:35,341 INFO L226 Difference]: Without dead ends: 172716 [2021-11-23 04:08:35,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:08:35,771 INFO L933 BasicCegarLoop]: 113489 mSDtfsCounter, 112783 mSDsluCounter, 113300 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112783 SdHoareTripleChecker+Valid, 226789 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 04:08:35,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112783 Valid, 226789 Invalid, 44 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 04:08:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172716 states. [2021-11-23 04:08:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172716 to 167578. [2021-11-23 04:08:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167578 states, 164676 states have (on average 1.2642704462095267) internal successors, (208195), 167347 states have internal predecessors, (208195), 262 states have call successors, (262), 20 states have call predecessors, (262), 20 states have return successors, (262), 260 states have call predecessors, (262), 262 states have call successors, (262) [2021-11-23 04:08:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167578 states to 167578 states and 208719 transitions. [2021-11-23 04:08:40,174 INFO L78 Accepts]: Start accepts. Automaton has 167578 states and 208719 transitions. Word has length 85 [2021-11-23 04:08:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:08:40,177 INFO L470 AbstractCegarLoop]: Abstraction has 167578 states and 208719 transitions. [2021-11-23 04:08:40,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-23 04:08:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 167578 states and 208719 transitions. [2021-11-23 04:08:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 04:08:40,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:08:40,185 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] [2021-11-23 04:08:40,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 04:08:40,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2390ASSERT_VIOLATIONERROR_FUNCTION === [pch_gbe_stopErr0ASSERT_VIOLATIONERROR_FUNCTION, pch_gbe_stopErr1ASSERT_VIOLATIONERROR_FUNCTION, pch_gbe_stopErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2617 more)] === [2021-11-23 04:08:40,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:08:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash 877768796, now seen corresponding path program 1 times [2021-11-23 04:08:40,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 04:08:40,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293053291] [2021-11-23 04:08:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:08:40,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:08:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:08:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 04:08:40,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 04:08:40,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293053291] [2021-11-23 04:08:40,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293053291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:08:40,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:08:40,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 04:08:40,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391393466] [2021-11-23 04:08:40,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:08:40,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 04:08:40,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 04:08:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 04:08:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:08:40,999 INFO L87 Difference]: Start difference. First operand 167578 states and 208719 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-23 04:08:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:08:46,693 INFO L93 Difference]: Finished difference Result 418639 states and 519557 transitions. [2021-11-23 04:08:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 04:08:46,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-23 04:08:46,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:08:47,633 INFO L225 Difference]: With dead ends: 418639 [2021-11-23 04:08:47,633 INFO L226 Difference]: Without dead ends: 251234 [2021-11-23 04:08:48,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:08:48,406 INFO L933 BasicCegarLoop]: 106011 mSDtfsCounter, 103943 mSDsluCounter, 105842 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103943 SdHoareTripleChecker+Valid, 211853 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 04:08:48,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103943 Valid, 211853 Invalid, 54 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 04:08:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251234 states.