./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-mutex_drivers-net-netconsole.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:03:15,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:03:15,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:03:15,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:03:15,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:03:15,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:03:15,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:03:15,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:03:15,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:03:15,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:03:15,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:03:15,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:03:15,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:03:15,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:03:15,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:03:15,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:03:15,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:03:15,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:03:15,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:03:15,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:03:15,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:03:15,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:03:15,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:03:15,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:03:15,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:03:15,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:03:15,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:03:15,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:03:15,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:03:15,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:03:15,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:03:15,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:03:15,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:03:15,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:03:15,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:03:15,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:03:15,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:03:15,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:03:15,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:03:15,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:03:15,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:03:15,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 16:03:15,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:03:15,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:03:15,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:03:15,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:03:15,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:03:15,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:03:15,678 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:03:15,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:03:15,678 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:03:15,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:03:15,679 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:03:15,679 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:03:15,679 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:03:15,680 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:03:15,680 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:03:15,680 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:03:15,680 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:03:15,681 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:03:15,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:03:15,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:03:15,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:03:15,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:03:15,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:03:15,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:03:15,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:03:15,683 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:03:15,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:03:15,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:03:15,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:03:15,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:03:15,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:03:15,685 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:03:15,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:03:15,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:03:15,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:03:15,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:03:15,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:03:15,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:03:15,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2022-11-16 16:03:15,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:03:16,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:03:16,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:03:16,016 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:03:16,017 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:03:16,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-16 16:03:16,085 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/data/4f961d038/8d42e0fba4324bb3b4476f060b1dc7d5/FLAG5da371bfc [2022-11-16 16:03:17,035 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:03:17,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-16 16:03:17,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/data/4f961d038/8d42e0fba4324bb3b4476f060b1dc7d5/FLAG5da371bfc [2022-11-16 16:03:17,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/data/4f961d038/8d42e0fba4324bb3b4476f060b1dc7d5 [2022-11-16 16:03:17,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:03:17,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:03:17,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:03:17,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:03:17,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:03:17,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:03:17" (1/1) ... [2022-11-16 16:03:17,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5e4161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:17, skipping insertion in model container [2022-11-16 16:03:17,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:03:17" (1/1) ... [2022-11-16 16:03:17,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:03:17,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:03:19,927 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2022-11-16 16:03:19,932 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2022-11-16 16:03:19,932 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2022-11-16 16:03:19,933 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2022-11-16 16:03:19,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:03:20,000 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:03:20,340 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2022-11-16 16:03:20,341 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2022-11-16 16:03:20,341 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2022-11-16 16:03:20,341 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2022-11-16 16:03:20,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:03:20,495 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:03:20,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20 WrapperNode [2022-11-16 16:03:20,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:03:20,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:03:20,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:03:20,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:03:20,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,742 INFO L138 Inliner]: procedures = 289, calls = 1094, calls flagged for inlining = 163, calls inlined = 153, statements flattened = 3462 [2022-11-16 16:03:20,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:03:20,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:03:20,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:03:20,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:03:20,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,942 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:20,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:21,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:03:21,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:03:21,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:03:21,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:03:21,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (1/1) ... [2022-11-16 16:03:21,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:03:21,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:03:21,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:03:21,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bdaed9-ef22-4dea-8da3-ff7d568f1cf2/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:03:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure show_enabled [2022-11-16 16:03:21,105 INFO L138 BoogieDeclarations]: Found implementation of procedure show_enabled [2022-11-16 16:03:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdevice_notifier [2022-11-16 16:03:21,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdevice_notifier [2022-11-16 16:03:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 16:03:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 16:03:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 16:03:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 16:03:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 16:03:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 16:03:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_mac [2022-11-16 16:03:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_mac [2022-11-16 16:03:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_put [2022-11-16 16:03:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_put [2022-11-16 16:03:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_ip [2022-11-16 16:03:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_ip [2022-11-16 16:03:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 16:03:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 16:03:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-16 16:03:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_name [2022-11-16 16:03:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_name [2022-11-16 16:03:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_notifier [2022-11-16 16:03:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_notifier [2022-11-16 16:03:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure drop_netconsole_target [2022-11-16 16:03:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_netconsole_target [2022-11-16 16:03:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure free_param_target [2022-11-16 16:03:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure free_param_target [2022-11-16 16:03:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 16:03:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 16:03:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_get [2022-11-16 16:03:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_get [2022-11-16 16:03:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_mac [2022-11-16 16:03:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_mac [2022-11-16 16:03:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_ip [2022-11-16 16:03:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_ip [2022-11-16 16:03:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-16 16:03:21,113 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-16 16:03:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-16 16:03:21,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-16 16:03:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_netconsole_target [2022-11-16 16:03:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_netconsole_target [2022-11-16 16:03:21,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:03:21,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 16:03:21,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-16 16:03:21,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-16 16:03:21,117 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-16 16:03:21,118 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-16 16:03:21,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-16 16:03:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-16 16:03:21,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-16 16:03:21,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-16 16:03:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-16 16:03:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-16 16:03:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_release [2022-11-16 16:03:21,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_release [2022-11-16 16:03:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_show [2022-11-16 16:03:21,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_show [2022-11-16 16:03:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure make_netconsole_target [2022-11-16 16:03:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure make_netconsole_target [2022-11-16 16:03:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:03:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 16:03:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_cleanup [2022-11-16 16:03:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_cleanup [2022-11-16 16:03:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_setup [2022-11-16 16:03:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_setup [2022-11-16 16:03:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-16 16:03:21,124 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-16 16:03:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 16:03:21,125 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 16:03:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-16 16:03:21,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-16 16:03:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-16 16:03:21,126 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-16 16:03:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_port [2022-11-16 16:03:21,126 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_port [2022-11-16 16:03:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-16 16:03:21,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-16 16:03:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure strnchr [2022-11-16 16:03:21,127 INFO L138 BoogieDeclarations]: Found implementation of procedure strnchr [2022-11-16 16:03:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtou16 [2022-11-16 16:03:21,128 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtou16 [2022-11-16 16:03:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 16:03:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-16 16:03:21,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-16 16:03:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 16:03:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-16 16:03:21,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-16 16:03:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:03:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-16 16:03:21,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-16 16:03:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure store_enabled [2022-11-16 16:03:21,132 INFO L138 BoogieDeclarations]: Found implementation of procedure store_enabled [2022-11-16 16:03:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_ip [2022-11-16 16:03:21,133 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_ip [2022-11-16 16:03:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-16 16:03:21,133 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-16 16:03:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2022-11-16 16:03:21,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2022-11-16 16:03:21,134 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 16:03:21,134 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 16:03:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure to_target [2022-11-16 16:03:21,135 INFO L138 BoogieDeclarations]: Found implementation of procedure to_target [2022-11-16 16:03:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-16 16:03:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-16 16:03:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_put [2022-11-16 16:03:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_put [2022-11-16 16:03:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:03:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_mac [2022-11-16 16:03:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_mac [2022-11-16 16:03:21,141 INFO L130 BoogieDeclarations]: Found specification of procedure in6_pton [2022-11-16 16:03:21,141 INFO L138 BoogieDeclarations]: Found implementation of procedure in6_pton [2022-11-16 16:03:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:03:21,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-16 16:03:21,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-16 16:03:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:03:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-16 16:03:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-16 16:03:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 16:03:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 16:03:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_ip [2022-11-16 16:03:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_ip [2022-11-16 16:03:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure in_aton [2022-11-16 16:03:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure in_aton [2022-11-16 16:03:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-16 16:03:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-16 16:03:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-16 16:03:21,151 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-16 16:03:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure store_dev_name [2022-11-16 16:03:21,151 INFO L138 BoogieDeclarations]: Found implementation of procedure store_dev_name [2022-11-16 16:03:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_port [2022-11-16 16:03:21,151 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_port [2022-11-16 16:03:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_store [2022-11-16 16:03:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_store [2022-11-16 16:03:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:03:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_port [2022-11-16 16:03:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_port [2022-11-16 16:03:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-16 16:03:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-16 16:03:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_name [2022-11-16 16:03:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_name [2022-11-16 16:03:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_port [2022-11-16 16:03:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_port [2022-11-16 16:03:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:03:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:03:22,113 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:03:22,116 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:03:22,421 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 16:03:25,339 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-16 16:03:25,476 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:03:26,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:03:26,111 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 16:03:26,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:03:26 BoogieIcfgContainer [2022-11-16 16:03:26,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:03:26,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:03:26,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:03:26,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:03:26,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:03:17" (1/3) ... [2022-11-16 16:03:26,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1416552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:03:26, skipping insertion in model container [2022-11-16 16:03:26,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:03:20" (2/3) ... [2022-11-16 16:03:26,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1416552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:03:26, skipping insertion in model container [2022-11-16 16:03:26,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:03:26" (3/3) ... [2022-11-16 16:03:26,128 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2022-11-16 16:03:26,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:03:26,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-16 16:03:26,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:03:26,282 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d1099dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:03:26,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 16:03:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 1124 states, 667 states have (on average 1.302848575712144) internal successors, (869), 676 states have internal predecessors, (869), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-16 16:03:26,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2022-11-16 16:03:26,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:26,389 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:26,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:03:26,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:26,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1556973048, now seen corresponding path program 1 times [2022-11-16 16:03:26,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:26,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329595978] [2022-11-16 16:03:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:26,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21756 trivial. 0 not checked. [2022-11-16 16:03:28,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:28,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329595978] [2022-11-16 16:03:28,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329595978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:28,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:28,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987608069] [2022-11-16 16:03:28,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:28,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:28,330 INFO L87 Difference]: Start difference. First operand has 1124 states, 667 states have (on average 1.302848575712144) internal successors, (869), 676 states have internal predecessors, (869), 392 states have call successors, (392), 63 states have call predecessors, (392), 62 states have return successors, (387), 387 states have call predecessors, (387), 387 states have call successors, (387) Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-16 16:03:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:29,121 INFO L93 Difference]: Finished difference Result 2950 states and 4346 transitions. [2022-11-16 16:03:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:29,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 761 [2022-11-16 16:03:29,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:29,163 INFO L225 Difference]: With dead ends: 2950 [2022-11-16 16:03:29,163 INFO L226 Difference]: Without dead ends: 1966 [2022-11-16 16:03:29,182 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:03:29,185 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 1340 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:29,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3113 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:03:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-11-16 16:03:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1962. [2022-11-16 16:03:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1189 states have (on average 1.313708999158957) internal successors, (1562), 1205 states have internal predecessors, (1562), 651 states have call successors, (651), 120 states have call predecessors, (651), 119 states have return successors, (647), 647 states have call predecessors, (647), 647 states have call successors, (647) [2022-11-16 16:03:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2860 transitions. [2022-11-16 16:03:29,497 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2860 transitions. Word has length 761 [2022-11-16 16:03:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:29,500 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2860 transitions. [2022-11-16 16:03:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2022-11-16 16:03:29,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2860 transitions. [2022-11-16 16:03:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-11-16 16:03:29,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:29,534 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:29,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:03:29,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:03:29,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:29,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1406877847, now seen corresponding path program 1 times [2022-11-16 16:03:29,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:29,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492036083] [2022-11-16 16:03:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:29,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-16 16:03:30,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:30,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492036083] [2022-11-16 16:03:30,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492036083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:30,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:30,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:30,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955207915] [2022-11-16 16:03:30,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:30,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:30,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:30,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:30,742 INFO L87 Difference]: Start difference. First operand 1962 states and 2860 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:31,625 INFO L93 Difference]: Finished difference Result 4724 states and 6830 transitions. [2022-11-16 16:03:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:31,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 789 [2022-11-16 16:03:31,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:31,648 INFO L225 Difference]: With dead ends: 4724 [2022-11-16 16:03:31,648 INFO L226 Difference]: Without dead ends: 2911 [2022-11-16 16:03:31,657 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:03:31,658 INFO L413 NwaCegarLoop]: 1754 mSDtfsCounter, 1317 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:31,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 3182 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 16:03:31,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2022-11-16 16:03:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2892. [2022-11-16 16:03:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 1755 states have (on average 1.3128205128205128) internal successors, (2304), 1782 states have internal predecessors, (2304), 932 states have call successors, (932), 203 states have call predecessors, (932), 202 states have return successors, (928), 923 states have call predecessors, (928), 928 states have call successors, (928) [2022-11-16 16:03:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4164 transitions. [2022-11-16 16:03:31,968 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4164 transitions. Word has length 789 [2022-11-16 16:03:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:31,971 INFO L495 AbstractCegarLoop]: Abstraction has 2892 states and 4164 transitions. [2022-11-16 16:03:31,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4164 transitions. [2022-11-16 16:03:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2022-11-16 16:03:32,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:32,004 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:32,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:03:32,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:03:32,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1905027213, now seen corresponding path program 1 times [2022-11-16 16:03:32,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:32,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159999538] [2022-11-16 16:03:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-16 16:03:32,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:32,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159999538] [2022-11-16 16:03:32,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159999538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:32,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:32,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:32,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966096814] [2022-11-16 16:03:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:32,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:32,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:32,763 INFO L87 Difference]: Start difference. First operand 2892 states and 4164 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:33,782 INFO L93 Difference]: Finished difference Result 7514 states and 10747 transitions. [2022-11-16 16:03:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 788 [2022-11-16 16:03:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:33,829 INFO L225 Difference]: With dead ends: 7514 [2022-11-16 16:03:33,829 INFO L226 Difference]: Without dead ends: 4771 [2022-11-16 16:03:33,845 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:03:33,851 INFO L413 NwaCegarLoop]: 1782 mSDtfsCounter, 1318 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:33,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 3210 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 16:03:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2022-11-16 16:03:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4752. [2022-11-16 16:03:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 2887 states have (on average 1.312088673363353) internal successors, (3788), 2936 states have internal predecessors, (3788), 1494 states have call successors, (1494), 369 states have call predecessors, (1494), 368 states have return successors, (1490), 1475 states have call predecessors, (1490), 1490 states have call successors, (1490) [2022-11-16 16:03:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6772 transitions. [2022-11-16 16:03:34,324 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6772 transitions. Word has length 788 [2022-11-16 16:03:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:34,326 INFO L495 AbstractCegarLoop]: Abstraction has 4752 states and 6772 transitions. [2022-11-16 16:03:34,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6772 transitions. [2022-11-16 16:03:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2022-11-16 16:03:34,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:34,369 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:34,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:03:34,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:03:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1610891350, now seen corresponding path program 1 times [2022-11-16 16:03:34,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:34,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297039227] [2022-11-16 16:03:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:34,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-16 16:03:35,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:35,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297039227] [2022-11-16 16:03:35,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297039227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:35,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:35,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237672244] [2022-11-16 16:03:35,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:35,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:35,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:35,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:35,153 INFO L87 Difference]: Start difference. First operand 4752 states and 6772 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:36,320 INFO L93 Difference]: Finished difference Result 13050 states and 18507 transitions. [2022-11-16 16:03:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 791 [2022-11-16 16:03:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:36,389 INFO L225 Difference]: With dead ends: 13050 [2022-11-16 16:03:36,389 INFO L226 Difference]: Without dead ends: 8447 [2022-11-16 16:03:36,418 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:03:36,419 INFO L413 NwaCegarLoop]: 1850 mSDtfsCounter, 1315 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:36,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 3278 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 16:03:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8447 states. [2022-11-16 16:03:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8447 to 8428. [2022-11-16 16:03:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 5126 states have (on average 1.3109637143971908) internal successors, (6720), 5219 states have internal predecessors, (6720), 2599 states have call successors, (2599), 701 states have call predecessors, (2599), 700 states have return successors, (2595), 2560 states have call predecessors, (2595), 2595 states have call successors, (2595) [2022-11-16 16:03:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 11914 transitions. [2022-11-16 16:03:37,155 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 11914 transitions. Word has length 791 [2022-11-16 16:03:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:37,157 INFO L495 AbstractCegarLoop]: Abstraction has 8428 states and 11914 transitions. [2022-11-16 16:03:37,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 11914 transitions. [2022-11-16 16:03:37,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2022-11-16 16:03:37,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:37,169 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:37,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:03:37,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:03:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:37,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1822160712, now seen corresponding path program 1 times [2022-11-16 16:03:37,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:37,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996448835] [2022-11-16 16:03:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:37,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-16 16:03:37,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:37,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996448835] [2022-11-16 16:03:37,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996448835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:37,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:37,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115556272] [2022-11-16 16:03:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:37,855 INFO L87 Difference]: Start difference. First operand 8428 states and 11914 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:39,245 INFO L93 Difference]: Finished difference Result 23946 states and 33731 transitions. [2022-11-16 16:03:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 790 [2022-11-16 16:03:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:39,359 INFO L225 Difference]: With dead ends: 23946 [2022-11-16 16:03:39,359 INFO L226 Difference]: Without dead ends: 15667 [2022-11-16 16:03:39,403 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:03:39,404 INFO L413 NwaCegarLoop]: 1897 mSDtfsCounter, 1316 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:39,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 3325 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 16:03:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15667 states. [2022-11-16 16:03:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15667 to 15648. [2022-11-16 16:03:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 9529 states have (on average 1.3092664497848672) internal successors, (12476), 9710 states have internal predecessors, (12476), 4752 states have call successors, (4752), 1365 states have call predecessors, (4752), 1364 states have return successors, (4748), 4673 states have call predecessors, (4748), 4748 states have call successors, (4748) [2022-11-16 16:03:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 21976 transitions. [2022-11-16 16:03:40,951 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 21976 transitions. Word has length 790 [2022-11-16 16:03:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:40,953 INFO L495 AbstractCegarLoop]: Abstraction has 15648 states and 21976 transitions. [2022-11-16 16:03:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 21976 transitions. [2022-11-16 16:03:40,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2022-11-16 16:03:40,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:40,967 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:40,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:03:40,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:03:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash 457126311, now seen corresponding path program 1 times [2022-11-16 16:03:40,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:40,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770159087] [2022-11-16 16:03:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:40,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-16 16:03:41,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:41,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770159087] [2022-11-16 16:03:41,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770159087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:41,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:41,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:41,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059897162] [2022-11-16 16:03:41,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:41,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:41,658 INFO L87 Difference]: Start difference. First operand 15648 states and 21976 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:43,539 INFO L93 Difference]: Finished difference Result 45298 states and 63439 transitions. [2022-11-16 16:03:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:43,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 793 [2022-11-16 16:03:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:43,736 INFO L225 Difference]: With dead ends: 45298 [2022-11-16 16:03:43,736 INFO L226 Difference]: Without dead ends: 29799 [2022-11-16 16:03:43,800 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:03:43,802 INFO L413 NwaCegarLoop]: 1946 mSDtfsCounter, 1313 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:43,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 3374 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:03:43,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29799 states. [2022-11-16 16:03:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29799 to 29780. [2022-11-16 16:03:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29780 states, 18160 states have (on average 1.3070484581497797) internal successors, (23736), 18517 states have internal predecessors, (23736), 8925 states have call successors, (8925), 2693 states have call predecessors, (8925), 2692 states have return successors, (8921), 8766 states have call predecessors, (8921), 8921 states have call successors, (8921) [2022-11-16 16:03:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29780 states to 29780 states and 41582 transitions. [2022-11-16 16:03:46,291 INFO L78 Accepts]: Start accepts. Automaton has 29780 states and 41582 transitions. Word has length 793 [2022-11-16 16:03:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:46,292 INFO L495 AbstractCegarLoop]: Abstraction has 29780 states and 41582 transitions. [2022-11-16 16:03:46,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 29780 states and 41582 transitions. [2022-11-16 16:03:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2022-11-16 16:03:46,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:46,308 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:46,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 16:03:46,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:03:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash -349801035, now seen corresponding path program 1 times [2022-11-16 16:03:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:46,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736001122] [2022-11-16 16:03:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-16 16:03:47,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:47,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736001122] [2022-11-16 16:03:47,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736001122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:47,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:47,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653170127] [2022-11-16 16:03:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:47,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:47,014 INFO L87 Difference]: Start difference. First operand 29780 states and 41582 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:50,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:03:50,399 INFO L93 Difference]: Finished difference Result 87034 states and 121227 transitions. [2022-11-16 16:03:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:03:50,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 792 [2022-11-16 16:03:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:03:50,731 INFO L225 Difference]: With dead ends: 87034 [2022-11-16 16:03:50,731 INFO L226 Difference]: Without dead ends: 57403 [2022-11-16 16:03:50,855 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:03:50,856 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 1314 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3421 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 16:03:50,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 3421 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 16:03:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57403 states. [2022-11-16 16:03:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57403 to 57384. [2022-11-16 16:03:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57384 states, 35047 states have (on average 1.3044197791537078) internal successors, (45716), 35756 states have internal predecessors, (45716), 16986 states have call successors, (16986), 5349 states have call predecessors, (16986), 5348 states have return successors, (16982), 16667 states have call predecessors, (16982), 16982 states have call successors, (16982) [2022-11-16 16:03:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57384 states to 57384 states and 79684 transitions. [2022-11-16 16:03:54,711 INFO L78 Accepts]: Start accepts. Automaton has 57384 states and 79684 transitions. Word has length 792 [2022-11-16 16:03:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:03:54,713 INFO L495 AbstractCegarLoop]: Abstraction has 57384 states and 79684 transitions. [2022-11-16 16:03:54,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:03:54,713 INFO L276 IsEmpty]: Start isEmpty. Operand 57384 states and 79684 transitions. [2022-11-16 16:03:54,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2022-11-16 16:03:54,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:03:54,725 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:03:54,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 16:03:54,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:03:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:03:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash -389702105, now seen corresponding path program 1 times [2022-11-16 16:03:54,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:03:54,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319417866] [2022-11-16 16:03:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:03:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:03:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:03:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-16 16:03:55,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:03:55,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319417866] [2022-11-16 16:03:55,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319417866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:03:55,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:03:55,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:03:55,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736208215] [2022-11-16 16:03:55,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:03:55,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:03:55,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:03:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:03:55,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:03:55,587 INFO L87 Difference]: Start difference. First operand 57384 states and 79684 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:04:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:04:01,252 INFO L93 Difference]: Finished difference Result 168482 states and 233399 transitions. [2022-11-16 16:04:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:04:01,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 794 [2022-11-16 16:04:01,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:04:01,885 INFO L225 Difference]: With dead ends: 168482 [2022-11-16 16:04:01,885 INFO L226 Difference]: Without dead ends: 111247 [2022-11-16 16:04:02,168 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:04:02,169 INFO L413 NwaCegarLoop]: 2042 mSDtfsCounter, 1312 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 16:04:02,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 3470 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 16:04:02,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111247 states. [2022-11-16 16:04:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111247 to 111228. [2022-11-16 16:04:08,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111228 states, 68046 states have (on average 1.3014725332863064) internal successors, (88560), 69459 states have internal predecessors, (88560), 32519 states have call successors, (32519), 10661 states have call predecessors, (32519), 10660 states have return successors, (32515), 31880 states have call predecessors, (32515), 32515 states have call successors, (32515) [2022-11-16 16:04:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111228 states to 111228 states and 153594 transitions. [2022-11-16 16:04:09,489 INFO L78 Accepts]: Start accepts. Automaton has 111228 states and 153594 transitions. Word has length 794 [2022-11-16 16:04:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:04:09,491 INFO L495 AbstractCegarLoop]: Abstraction has 111228 states and 153594 transitions. [2022-11-16 16:04:09,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2022-11-16 16:04:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 111228 states and 153594 transitions. [2022-11-16 16:04:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2022-11-16 16:04:09,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:04:09,507 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:04:09,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 16:04:09,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-16 16:04:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:04:09,508 INFO L85 PathProgramCache]: Analyzing trace with hash 168630160, now seen corresponding path program 1 times [2022-11-16 16:04:09,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:04:09,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462904999] [2022-11-16 16:04:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:04:09,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:04:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:04:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2022-11-16 16:04:10,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:04:10,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462904999] [2022-11-16 16:04:10,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462904999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:04:10,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:04:10,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:04:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059750188] [2022-11-16 16:04:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:04:10,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:04:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:04:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:04:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:04:10,165 INFO L87 Difference]: Start difference. First operand 111228 states and 153594 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81)