./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7 --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 dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:11:52,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:11:52,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:11:52,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:11:52,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:11:52,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:11:52,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:11:52,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:11:52,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:11:52,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:11:52,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:11:52,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:11:52,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:11:52,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:11:52,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:11:52,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:11:52,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:11:52,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:11:52,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:11:52,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:11:52,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:11:52,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:11:52,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:11:52,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:11:52,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:11:52,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:11:52,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:11:52,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:11:52,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:11:52,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:11:52,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:11:52,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:11:52,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:11:52,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:11:52,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:11:52,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:11:52,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:11:52,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:11:52,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:11:52,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:11:52,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:11:52,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:11:52,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:11:52,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:11:52,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:11:52,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:11:52,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:11:52,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:11:52,551 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:11:52,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:11:52,552 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:11:52,552 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:11:52,552 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:11:52,552 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:11:52,553 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:11:52,553 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:11:52,553 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:11:52,553 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:11:52,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:11:52,554 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:11:52,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:11:52,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:11:52,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:11:52,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:11:52,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:11:52,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:11:52,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:11:52,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:11:52,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:11:52,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:11:52,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:11:52,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:52,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:11:52,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:11:52,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:11:52,558 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:11:52,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:11:52,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:11:52,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:11:52,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:11:52,559 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 [2021-11-25 18:11:52,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:11:52,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:11:52,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:11:52,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:11:52,846 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:11:52,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-25 18:11:52,917 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/data/3b40f5c1e/caba39a4d5ac46779b68ab037f538f05/FLAGa737ba9a7 [2021-11-25 18:11:53,788 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:11:53,788 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-25 18:11:53,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/data/3b40f5c1e/caba39a4d5ac46779b68ab037f538f05/FLAGa737ba9a7 [2021-11-25 18:11:54,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/data/3b40f5c1e/caba39a4d5ac46779b68ab037f538f05 [2021-11-25 18:11:54,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:11:54,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:11:54,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:54,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:11:54,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:11:54,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:54" (1/1) ... [2021-11-25 18:11:54,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e06746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:54, skipping insertion in model container [2021-11-25 18:11:54,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:54" (1/1) ... [2021-11-25 18:11:54,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:11:54,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:11:57,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2021-11-25 18:11:57,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:57,156 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:11:57,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2021-11-25 18:11:57,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:57,837 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:11:57,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57 WrapperNode [2021-11-25 18:11:57,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:57,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:57,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:11:57,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:11:57,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,259 INFO L137 Inliner]: procedures = 426, calls = 2215, calls flagged for inlining = 256, calls inlined = 245, statements flattened = 5984 [2021-11-25 18:11:58,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:58,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:11:58,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:11:58,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:11:58,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:11:58,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:11:58,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:11:58,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:11:58,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (1/1) ... [2021-11-25 18:11:58,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:58,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:58,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:11:58,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea79c39-91b0-480d-94ba-93ef3ea0f7a4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:11:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:11:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:11:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 18:11:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 18:11:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:11:58,654 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:11:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:11:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:11:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2021-11-25 18:11:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2021-11-25 18:11:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-25 18:11:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-25 18:11:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:11:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:11:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:11:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:11:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_hwaddr [2021-11-25 18:11:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_hwaddr [2021-11-25 18:11:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_regs_len [2021-11-25 18:11:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_regs_len [2021-11-25 18:11:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:11:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:11:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2021-11-25 18:11:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2021-11-25 18:11:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:11:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:11:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:11:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:11:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:11:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:11:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:11:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:11:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-25 18:11:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-25 18:11:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:11:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:11:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:11:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure macb_remove [2021-11-25 18:11:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_remove [2021-11-25 18:11:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:11:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:11:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-25 18:11:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-25 18:11:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:11:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:11:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:11:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2021-11-25 18:11:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2021-11-25 18:11:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:11:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:11:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 18:11:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 18:11:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:11:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:11:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:11:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:11:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:11:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:11:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure macb_free_consistent [2021-11-25 18:11:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_free_consistent [2021-11-25 18:11:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:11:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:11:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-25 18:11:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-25 18:11:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:11:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:11:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2021-11-25 18:11:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2021-11-25 18:11:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:11:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:11:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2021-11-25 18:11:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2021-11-25 18:11:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure macb_resume [2021-11-25 18:11:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_resume [2021-11-25 18:11:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:11:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:11:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:11:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:11:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:11:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:11:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:11:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-25 18:11:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-25 18:11:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure macb_is_gem [2021-11-25 18:11:58,713 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_is_gem [2021-11-25 18:11:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-25 18:11:58,713 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-25 18:11:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:11:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:11:58,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:11:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure macb_rx_ring_wrap [2021-11-25 18:11:58,714 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_rx_ring_wrap [2021-11-25 18:11:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:11:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:11:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:11:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:11:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:11:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-25 18:11:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-25 18:11:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:11:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:11:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:11:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:11:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:11:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:11:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2021-11-25 18:11:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2021-11-25 18:11:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-25 18:11:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-25 18:11:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:11:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:11:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:11:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:11:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-25 18:11:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-25 18:11:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:11:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:11:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:11:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:11:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-25 18:11:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-25 18:11:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure phy_find_first [2021-11-25 18:11:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_find_first [2021-11-25 18:11:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:11:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:11:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_ring_wrap [2021-11-25 18:11:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_ring_wrap [2021-11-25 18:11:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:11:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:11:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2021-11-25 18:11:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2021-11-25 18:11:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_hwaddr [2021-11-25 18:11:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_hwaddr [2021-11-25 18:11:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:11:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:11:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure macb_handle_link_change [2021-11-25 18:11:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_handle_link_change [2021-11-25 18:11:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mii_init [2021-11-25 18:11:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mii_init [2021-11-25 18:11:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_14 [2021-11-25 18:11:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_14 [2021-11-25 18:11:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_16 [2021-11-25 18:11:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_16 [2021-11-25 18:11:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_15 [2021-11-25 18:11:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_15 [2021-11-25 18:11:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure macb_close [2021-11-25 18:11:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_close [2021-11-25 18:11:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mdc_clk_div [2021-11-25 18:11:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mdc_clk_div [2021-11-25 18:11:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-25 18:11:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-25 18:11:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:11:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:11:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_19 [2021-11-25 18:11:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_19 [2021-11-25 18:11:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:11:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2021-11-25 18:11:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2021-11-25 18:11:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-25 18:11:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-25 18:11:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:11:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:11:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_21 [2021-11-25 18:11:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_21 [2021-11-25 18:11:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:11:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_20 [2021-11-25 18:11:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_20 [2021-11-25 18:11:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure clk_get_rate [2021-11-25 18:11:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_get_rate [2021-11-25 18:11:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:11:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_rx_mode [2021-11-25 18:11:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_rx_mode [2021-11-25 18:11:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_desc [2021-11-25 18:11:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_desc [2021-11-25 18:11:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 18:11:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 18:11:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 18:11:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 18:11:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure macb_reset_hw [2021-11-25 18:11:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_reset_hw [2021-11-25 18:11:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:11:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:11:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure macb_suspend [2021-11-25 18:11:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_suspend [2021-11-25 18:11:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure devm_clk_get [2021-11-25 18:11:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_clk_get [2021-11-25 18:11:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:11:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:11:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure macb_dbw [2021-11-25 18:11:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_dbw [2021-11-25 18:11:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:11:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:11:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 18:11:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 18:11:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:11:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:11:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:11:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:11:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure devm_pinctrl_put [2021-11-25 18:11:58,761 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_pinctrl_put [2021-11-25 18:11:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:11:58,762 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:11:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:11:58,764 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:11:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:11:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:11:58,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:11:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure gem_rx_refill [2021-11-25 18:11:58,765 INFO L138 BoogieDeclarations]: Found implementation of procedure gem_rx_refill [2021-11-25 18:11:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:11:58,765 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:11:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_dma [2021-11-25 18:11:58,765 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_dma [2021-11-25 18:11:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_skb [2021-11-25 18:11:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_skb [2021-11-25 18:11:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure macb_interrupt [2021-11-25 18:11:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_interrupt [2021-11-25 18:11:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 18:11:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 18:11:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2021-11-25 18:11:58,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2021-11-25 18:11:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:11:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:11:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2021-11-25 18:11:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2021-11-25 18:11:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-25 18:11:58,767 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-25 18:11:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:11:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:11:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:11:58,768 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 18:11:58,768 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 18:11:59,742 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:11:59,749 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:11:59,865 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:12:05,097 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:12:05,167 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:12:06,576 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:12:06,576 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:12:06,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:06 BoogieIcfgContainer [2021-11-25 18:12:06,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:12:06,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:12:06,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:12:06,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:12:06,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:11:54" (1/3) ... [2021-11-25 18:12:06,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e3d586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:12:06, skipping insertion in model container [2021-11-25 18:12:06,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:57" (2/3) ... [2021-11-25 18:12:06,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e3d586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:12:06, skipping insertion in model container [2021-11-25 18:12:06,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:06" (3/3) ... [2021-11-25 18:12:06,599 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-25 18:12:06,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:12:06,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:12:06,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:12:06,696 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:12:06,697 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:12:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 1609 states, 979 states have (on average 1.2941777323799795) internal successors, (1267), 997 states have internal predecessors, (1267), 522 states have call successors, (522), 108 states have call predecessors, (522), 107 states have return successors, (515), 510 states have call predecessors, (515), 515 states have call successors, (515) [2021-11-25 18:12:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 18:12:06,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:06,789 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:06,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1590180421, now seen corresponding path program 1 times [2021-11-25 18:12:06,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:12:06,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498919335] [2021-11-25 18:12:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:06,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:12:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-25 18:12:07,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:12:07,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498919335] [2021-11-25 18:12:07,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498919335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:07,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:12:07,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:12:07,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896791542] [2021-11-25 18:12:07,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:07,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:12:07,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:12:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:12:07,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:12:07,606 INFO L87 Difference]: Start difference. First operand has 1609 states, 979 states have (on average 1.2941777323799795) internal successors, (1267), 997 states have internal predecessors, (1267), 522 states have call successors, (522), 108 states have call predecessors, (522), 107 states have return successors, (515), 510 states have call predecessors, (515), 515 states have call successors, (515) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 18:12:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:11,900 INFO L93 Difference]: Finished difference Result 4724 states and 6776 transitions. [2021-11-25 18:12:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:12:11,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2021-11-25 18:12:11,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:11,949 INFO L225 Difference]: With dead ends: 4724 [2021-11-25 18:12:11,949 INFO L226 Difference]: Without dead ends: 3126 [2021-11-25 18:12:11,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:12:11,968 INFO L933 BasicCegarLoop]: 2464 mSDtfsCounter, 2224 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:11,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 4405 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 18:12:11,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-11-25 18:12:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3126. [2021-11-25 18:12:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 1912 states have (on average 1.2913179916317992) internal successors, (2469), 1948 states have internal predecessors, (2469), 1002 states have call successors, (1002), 212 states have call predecessors, (1002), 211 states have return successors, (999), 989 states have call predecessors, (999), 999 states have call successors, (999) [2021-11-25 18:12:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4470 transitions. [2021-11-25 18:12:12,407 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4470 transitions. Word has length 127 [2021-11-25 18:12:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:12,411 INFO L470 AbstractCegarLoop]: Abstraction has 3126 states and 4470 transitions. [2021-11-25 18:12:12,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 18:12:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4470 transitions. [2021-11-25 18:12:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-25 18:12:12,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:12,441 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:12,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:12:12,442 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1872571493, now seen corresponding path program 1 times [2021-11-25 18:12:12,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:12:12,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328214654] [2021-11-25 18:12:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:12,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:12:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-11-25 18:12:12,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:12:12,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328214654] [2021-11-25 18:12:12,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328214654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:12,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:12:12,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:12:12,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120408790] [2021-11-25 18:12:12,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:12,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:12:12,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:12:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:12:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:12:12,785 INFO L87 Difference]: Start difference. First operand 3126 states and 4470 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 18:12:15,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:17,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:19,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:22,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:24,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:25,942 INFO L93 Difference]: Finished difference Result 6235 states and 8911 transitions. [2021-11-25 18:12:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:12:25,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2021-11-25 18:12:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:26,000 INFO L225 Difference]: With dead ends: 6235 [2021-11-25 18:12:26,000 INFO L226 Difference]: Without dead ends: 6233 [2021-11-25 18:12:26,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:12:26,007 INFO L933 BasicCegarLoop]: 2445 mSDtfsCounter, 2239 mSDsluCounter, 7790 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 9245 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:26,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 9245 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1331 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-11-25 18:12:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2021-11-25 18:12:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 6231. [2021-11-25 18:12:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6231 states, 3814 states have (on average 1.2920818038804405) internal successors, (4928), 3886 states have internal predecessors, (4928), 1993 states have call successors, (1993), 425 states have call predecessors, (1993), 423 states have return successors, (1987), 1967 states have call predecessors, (1987), 1987 states have call successors, (1987) [2021-11-25 18:12:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6231 states to 6231 states and 8908 transitions. [2021-11-25 18:12:26,464 INFO L78 Accepts]: Start accepts. Automaton has 6231 states and 8908 transitions. Word has length 165 [2021-11-25 18:12:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:26,465 INFO L470 AbstractCegarLoop]: Abstraction has 6231 states and 8908 transitions. [2021-11-25 18:12:26,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 18:12:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6231 states and 8908 transitions. [2021-11-25 18:12:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-25 18:12:26,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:26,477 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:26,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:12:26,477 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1739269773, now seen corresponding path program 1 times [2021-11-25 18:12:26,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:12:26,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243410764] [2021-11-25 18:12:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:26,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:12:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-11-25 18:12:26,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:12:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243410764] [2021-11-25 18:12:26,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243410764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:26,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:12:26,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:12:26,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645072333] [2021-11-25 18:12:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:26,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:12:26,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:12:26,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:12:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:12:26,744 INFO L87 Difference]: Start difference. First operand 6231 states and 8908 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:12:34,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:37,090 INFO L93 Difference]: Finished difference Result 12029 states and 17383 transitions. [2021-11-25 18:12:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:12:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 170 [2021-11-25 18:12:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:37,195 INFO L225 Difference]: With dead ends: 12029 [2021-11-25 18:12:37,195 INFO L226 Difference]: Without dead ends: 12027 [2021-11-25 18:12:37,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:12:37,206 INFO L933 BasicCegarLoop]: 2485 mSDtfsCounter, 2138 mSDsluCounter, 7878 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 9359 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:37,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 9359 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1361 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 18:12:37,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12027 states. [2021-11-25 18:12:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12027 to 11937. [2021-11-25 18:12:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11937 states, 7305 states have (on average 1.2956878850102669) internal successors, (9465), 7481 states have internal predecessors, (9465), 3807 states have call successors, (3807), 828 states have call predecessors, (3807), 824 states have return successors, (3987), 3719 states have call predecessors, (3987), 3795 states have call successors, (3987) [2021-11-25 18:12:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 17259 transitions. [2021-11-25 18:12:38,019 INFO L78 Accepts]: Start accepts. Automaton has 11937 states and 17259 transitions. Word has length 170 [2021-11-25 18:12:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:38,020 INFO L470 AbstractCegarLoop]: Abstraction has 11937 states and 17259 transitions. [2021-11-25 18:12:38,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:12:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 11937 states and 17259 transitions. [2021-11-25 18:12:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-25 18:12:38,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:38,033 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:38,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:12:38,034 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1742205595, now seen corresponding path program 1 times [2021-11-25 18:12:38,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:12:38,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034050284] [2021-11-25 18:12:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:38,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:12:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-25 18:12:38,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:12:38,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034050284] [2021-11-25 18:12:38,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034050284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:38,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:12:38,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:12:38,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258633923] [2021-11-25 18:12:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:38,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:12:38,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:12:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:12:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:12:38,349 INFO L87 Difference]: Start difference. First operand 11937 states and 17259 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 18:12:41,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:46,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:12:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:49,495 INFO L93 Difference]: Finished difference Result 23261 states and 34165 transitions. [2021-11-25 18:12:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:12:49,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 175 [2021-11-25 18:12:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:49,705 INFO L225 Difference]: With dead ends: 23261 [2021-11-25 18:12:49,705 INFO L226 Difference]: Without dead ends: 23257 [2021-11-25 18:12:49,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:12:49,731 INFO L933 BasicCegarLoop]: 2484 mSDtfsCounter, 2126 mSDsluCounter, 7882 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 9362 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:49,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2127 Valid, 9362 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2021-11-25 18:12:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23257 states. [2021-11-25 18:12:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23257 to 23127. [2021-11-25 18:12:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23127 states, 14168 states have (on average 1.298630717108978) internal successors, (18399), 14547 states have internal predecessors, (18399), 7359 states have call successors, (7359), 1620 states have call predecessors, (7359), 1599 states have return successors, (8231), 7135 states have call predecessors, (8231), 7335 states have call successors, (8231) [2021-11-25 18:12:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23127 states to 23127 states and 33989 transitions. [2021-11-25 18:12:51,139 INFO L78 Accepts]: Start accepts. Automaton has 23127 states and 33989 transitions. Word has length 175 [2021-11-25 18:12:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:51,140 INFO L470 AbstractCegarLoop]: Abstraction has 23127 states and 33989 transitions. [2021-11-25 18:12:51,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 18:12:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 23127 states and 33989 transitions. [2021-11-25 18:12:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-25 18:12:51,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:51,157 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:51,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:12:51,158 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1218812534, now seen corresponding path program 1 times [2021-11-25 18:12:51,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:12:51,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499736114] [2021-11-25 18:12:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:51,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:12:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-11-25 18:12:51,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:12:51,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499736114] [2021-11-25 18:12:51,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499736114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:51,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:12:51,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:12:51,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907956774] [2021-11-25 18:12:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:51,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:12:51,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:12:51,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:12:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:12:51,453 INFO L87 Difference]: Start difference. First operand 23127 states and 33989 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 18:12:53,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:02,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:13:04,276 INFO L93 Difference]: Finished difference Result 46229 states and 69513 transitions. [2021-11-25 18:13:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:13:04,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 189 [2021-11-25 18:13:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:13:04,717 INFO L225 Difference]: With dead ends: 46229 [2021-11-25 18:13:04,717 INFO L226 Difference]: Without dead ends: 46140 [2021-11-25 18:13:04,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:13:04,758 INFO L933 BasicCegarLoop]: 2486 mSDtfsCounter, 2257 mSDsluCounter, 7887 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 9386 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:13:04,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2257 Valid, 9386 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1330 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2021-11-25 18:13:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46140 states. [2021-11-25 18:13:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46140 to 46112. [2021-11-25 18:13:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46112 states, 28257 states have (on average 1.299147113989454) internal successors, (36710), 29022 states have internal predecessors, (36710), 14674 states have call successors, (14674), 3224 states have call predecessors, (14674), 3180 states have return successors, (17989), 14217 states have call predecessors, (17989), 14629 states have call successors, (17989) [2021-11-25 18:13:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46112 states to 46112 states and 69373 transitions. [2021-11-25 18:13:08,608 INFO L78 Accepts]: Start accepts. Automaton has 46112 states and 69373 transitions. Word has length 189 [2021-11-25 18:13:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:13:08,609 INFO L470 AbstractCegarLoop]: Abstraction has 46112 states and 69373 transitions. [2021-11-25 18:13:08,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 18:13:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 46112 states and 69373 transitions. [2021-11-25 18:13:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-25 18:13:08,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:08,669 INFO L514 BasicCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 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] [2021-11-25 18:13:08,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:13:08,670 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1442814685, now seen corresponding path program 1 times [2021-11-25 18:13:08,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:13:08,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567870122] [2021-11-25 18:13:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:08,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:13:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:13:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-25 18:13:11,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:13:11,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567870122] [2021-11-25 18:13:11,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567870122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:13:11,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:13:11,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:13:11,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516093498] [2021-11-25 18:13:11,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:13:11,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:13:11,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:13:11,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:13:11,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:13:11,962 INFO L87 Difference]: Start difference. First operand 46112 states and 69373 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 18:13:19,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:13:19,994 INFO L93 Difference]: Finished difference Result 132930 states and 204711 transitions. [2021-11-25 18:13:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:13:19,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 201 [2021-11-25 18:13:19,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:13:20,969 INFO L225 Difference]: With dead ends: 132930 [2021-11-25 18:13:20,969 INFO L226 Difference]: Without dead ends: 86841 [2021-11-25 18:13:21,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:13:21,276 INFO L933 BasicCegarLoop]: 2421 mSDtfsCounter, 2005 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:13:21,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 4341 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 18:13:21,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86841 states. [2021-11-25 18:13:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86841 to 86575. [2021-11-25 18:13:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86575 states, 52972 states have (on average 1.2922109793853356) internal successors, (68451), 54471 states have internal predecessors, (68451), 27430 states have call successors, (27430), 6276 states have call predecessors, (27430), 6172 states have return successors, (39049), 26443 states have call predecessors, (39049), 27385 states have call successors, (39049) [2021-11-25 18:13:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86575 states to 86575 states and 134930 transitions. [2021-11-25 18:13:26,892 INFO L78 Accepts]: Start accepts. Automaton has 86575 states and 134930 transitions. Word has length 201 [2021-11-25 18:13:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:13:26,893 INFO L470 AbstractCegarLoop]: Abstraction has 86575 states and 134930 transitions. [2021-11-25 18:13:26,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 18:13:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 86575 states and 134930 transitions. [2021-11-25 18:13:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-25 18:13:26,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:26,926 INFO L514 BasicCegarLoop]: trace histogram [18, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:13:26,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:13:26,927 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:26,927 INFO L85 PathProgramCache]: Analyzing trace with hash 16131490, now seen corresponding path program 1 times [2021-11-25 18:13:26,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:13:26,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319160447] [2021-11-25 18:13:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:26,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:13:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:13:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-25 18:13:27,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:13:27,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319160447] [2021-11-25 18:13:27,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319160447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:13:27,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:13:27,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:13:27,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975922860] [2021-11-25 18:13:27,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:13:27,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:13:27,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:13:27,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:13:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:13:27,116 INFO L87 Difference]: Start difference. First operand 86575 states and 134930 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-25 18:13:33,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:13:38,790 INFO L93 Difference]: Finished difference Result 245799 states and 373866 transitions. [2021-11-25 18:13:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:13:38,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 223 [2021-11-25 18:13:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:13:39,803 INFO L225 Difference]: With dead ends: 245799 [2021-11-25 18:13:39,804 INFO L226 Difference]: Without dead ends: 159247 [2021-11-25 18:13:40,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:13:40,405 INFO L933 BasicCegarLoop]: 3067 mSDtfsCounter, 2040 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:13:40,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2040 Valid, 4961 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 850 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 18:13:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159247 states. [2021-11-25 18:13:47,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159247 to 158909. [2021-11-25 18:13:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158909 states, 96782 states have (on average 1.2731396334029055) internal successors, (123217), 99485 states have internal predecessors, (123217), 50194 states have call successors, (50194), 11932 states have call predecessors, (50194), 11932 states have return successors, (63413), 48723 states have call predecessors, (63413), 50149 states have call successors, (63413) [2021-11-25 18:13:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158909 states to 158909 states and 236824 transitions. [2021-11-25 18:13:49,596 INFO L78 Accepts]: Start accepts. Automaton has 158909 states and 236824 transitions. Word has length 223 [2021-11-25 18:13:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:13:49,596 INFO L470 AbstractCegarLoop]: Abstraction has 158909 states and 236824 transitions. [2021-11-25 18:13:49,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-25 18:13:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 158909 states and 236824 transitions. [2021-11-25 18:13:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-25 18:13:49,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:13:49,642 INFO L514 BasicCegarLoop]: trace histogram [19, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:13:49,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:13:49,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:13:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:13:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1728050790, now seen corresponding path program 1 times [2021-11-25 18:13:49,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:13:49,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084258270] [2021-11-25 18:13:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:13:49,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:13:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:13:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2021-11-25 18:13:49,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:13:49,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084258270] [2021-11-25 18:13:49,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084258270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:13:49,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:13:49,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:13:49,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788485614] [2021-11-25 18:13:49,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:13:49,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:13:49,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:13:49,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:13:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:13:49,823 INFO L87 Difference]: Start difference. First operand 158909 states and 236824 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 18:13:55,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:57,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:13:58,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:02,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:14:03,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []