./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-smsc-smsc911x.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_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/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_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/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_093882d5-c23a-4d25-be4d-ac282ed80fc2/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 0705c7c1097399903dd015d79fa2944ad89b2d381aed5d9e2539b97c330aa424 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:03:11,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:03:11,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:03:11,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:03:11,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:03:11,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:03:11,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:03:11,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:03:11,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:03:11,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:03:11,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:03:11,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:03:11,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:03:11,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:03:11,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:03:11,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:03:11,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:03:11,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:03:11,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:03:11,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:03:11,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:03:11,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:03:11,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:03:11,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:03:11,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:03:11,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:03:11,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:03:11,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:03:11,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:03:11,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:03:11,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:03:11,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:03:11,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:03:11,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:03:11,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:03:11,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:03:11,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:03:11,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:03:11,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:03:11,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:03:11,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:03:11,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:03:11,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:03:11,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:03:11,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:03:11,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:03:11,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:03:11,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:03:11,455 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:03:11,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:03:11,455 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:03:11,455 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:03:11,455 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:03:11,456 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:03:11,456 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:03:11,456 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:03:11,456 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:03:11,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:03:11,457 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:03:11,457 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:03:11,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:03:11,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:03:11,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:03:11,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:03:11,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:03:11,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:03:11,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:03:11,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:03:11,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:03:11,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:03:11,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:03:11,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:03:11,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:03:11,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:03:11,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:03:11,460 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:03:11,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:03:11,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:03:11,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:03:11,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:03:11,462 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_093882d5-c23a-4d25-be4d-ac282ed80fc2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0705c7c1097399903dd015d79fa2944ad89b2d381aed5d9e2539b97c330aa424 [2021-11-25 19:03:11,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:03:11,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:03:11,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:03:11,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:03:11,745 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:03:11,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2021-11-25 19:03:11,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/data/018071ed8/7a12b0e8ca0a4c2ab7da96e44f4f7807/FLAG77a867917 [2021-11-25 19:03:12,695 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:03:12,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2021-11-25 19:03:12,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/data/018071ed8/7a12b0e8ca0a4c2ab7da96e44f4f7807/FLAG77a867917 [2021-11-25 19:03:12,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/data/018071ed8/7a12b0e8ca0a4c2ab7da96e44f4f7807 [2021-11-25 19:03:12,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:03:12,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:03:12,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:03:12,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:03:12,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:03:12,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:03:12" (1/1) ... [2021-11-25 19:03:12,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503b5871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:12, skipping insertion in model container [2021-11-25 19:03:12,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:03:12" (1/1) ... [2021-11-25 19:03:12,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:03:13,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:03:16,255 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_093882d5-c23a-4d25-be4d-ac282ed80fc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i[351362,351375] [2021-11-25 19:03:16,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:03:16,332 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:03:16,863 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_093882d5-c23a-4d25-be4d-ac282ed80fc2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i[351362,351375] [2021-11-25 19:03:16,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:03:17,147 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:03:17,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17 WrapperNode [2021-11-25 19:03:17,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:03:17,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:03:17,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:03:17,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:03:17,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,517 INFO L137 Inliner]: procedures = 415, calls = 1887, calls flagged for inlining = 249, calls inlined = 236, statements flattened = 5538 [2021-11-25 19:03:17,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:03:17,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:03:17,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:03:17,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:03:17,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:03:17,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:03:17,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:03:17,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:03:17,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (1/1) ... [2021-11-25 19:03:17,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:03:17,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:03:17,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:03:17,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:03:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:03:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:03:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:03:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:03:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:03:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:03:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:03:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:03:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mii_read [2021-11-25 19:03:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mii_read [2021-11-25 19:03:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_resume [2021-11-25 19:03:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_resume [2021-11-25 19:03:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:03:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:03:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_drv_probe [2021-11-25 19:03:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_drv_probe [2021-11-25 19:03:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure no_printk [2021-11-25 19:03:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure no_printk [2021-11-25 19:03:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:03:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:03:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:03:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:03:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 19:03:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 19:03:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:03:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:03:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:03:17,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:03:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:03:17,976 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:03:17,976 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_set_multicast_list [2021-11-25 19:03:17,976 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_set_multicast_list [2021-11-25 19:03:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_set_hw_mac_address [2021-11-25 19:03:17,977 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_set_hw_mac_address [2021-11-25 19:03:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2021-11-25 19:03:17,977 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2021-11-25 19:03:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-25 19:03:17,977 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-25 19:03:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:03:17,977 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 19:03:17,978 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 19:03:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_drv_remove [2021-11-25 19:03:17,978 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_drv_remove [2021-11-25 19:03:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_multicast_update [2021-11-25 19:03:17,978 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_multicast_update [2021-11-25 19:03:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:03:17,979 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:03:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:03:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 19:03:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 19:03:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 19:03:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 19:03:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_writefifo [2021-11-25 19:03:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_writefifo [2021-11-25 19:03:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:03:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:03:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:03:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_irqhandler [2021-11-25 19:03:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_irqhandler [2021-11-25 19:03:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:03:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:03:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:03:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-25 19:03:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-25 19:03:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:03:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:03:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_disable_resources [2021-11-25 19:03:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_disable_resources [2021-11-25 19:03:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_get_rxstatus [2021-11-25 19:03:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_get_rxstatus [2021-11-25 19:03:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_read [2021-11-25 19:03:17,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_read [2021-11-25 19:03:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_getregslen [2021-11-25 19:03:17,984 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_getregslen [2021-11-25 19:03:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:03:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:03:17,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:03:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:03:17,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:03:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 19:03:17,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 19:03:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-25 19:03:17,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-25 19:03:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:03:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 19:03:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 19:03:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:03:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:03:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:03:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:03:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:03:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:03:17,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 19:03:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 19:03:17,989 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 19:03:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:03:17,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:03:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mii_write [2021-11-25 19:03:17,990 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mii_write [2021-11-25 19:03:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_complete [2021-11-25 19:03:17,990 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_complete [2021-11-25 19:03:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-25 19:03:17,990 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-25 19:03:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:03:17,991 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:03:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 19:03:17,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 19:03:17,991 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32_rep [2021-11-25 19:03:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32_rep [2021-11-25 19:03:17,992 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-25 19:03:17,992 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-25 19:03:17,993 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource_byname [2021-11-25 19:03:17,995 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource_byname [2021-11-25 19:03:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:03:17,996 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:03:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:03:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:03:17,997 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-25 19:03:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-25 19:03:17,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:03:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:03:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 19:03:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 19:03:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 19:03:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 19:03:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_get_txstatus [2021-11-25 19:03:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_get_txstatus [2021-11-25 19:03:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:03:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:03:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-25 19:03:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-25 19:03:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:03:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:03:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:03:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:03:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_readfifo [2021-11-25 19:03:18,005 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_readfifo [2021-11-25 19:03:18,005 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_open [2021-11-25 19:03:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_open [2021-11-25 19:03:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-25 19:03:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-25 19:03:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_get_eeprom_len [2021-11-25 19:03:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_get_eeprom_len [2021-11-25 19:03:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_readfifo_shift [2021-11-25 19:03:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_readfifo_shift [2021-11-25 19:03:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_suspend [2021-11-25 19:03:18,006 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_suspend [2021-11-25 19:03:18,006 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_read_mac_address [2021-11-25 19:03:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_read_mac_address [2021-11-25 19:03:18,007 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_write [2021-11-25 19:03:18,007 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_write [2021-11-25 19:03:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2021-11-25 19:03:18,008 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2021-11-25 19:03:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:03:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:03:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:03:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:03:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 19:03:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 19:03:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_write [2021-11-25 19:03:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_write [2021-11-25 19:03:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:03:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:03:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:03:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:03:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_reg_write [2021-11-25 19:03:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_reg_write [2021-11-25 19:03:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_nwayreset [2021-11-25 19:03:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_nwayreset [2021-11-25 19:03:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_free_resources [2021-11-25 19:03:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_free_resources [2021-11-25 19:03:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_disable_irq_chip [2021-11-25 19:03:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_disable_irq_chip [2021-11-25 19:03:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:03:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 19:03:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 19:03:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_eeprom_send_cmd [2021-11-25 19:03:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_eeprom_send_cmd [2021-11-25 19:03:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:03:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:03:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_phy_adjust_link [2021-11-25 19:03:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_phy_adjust_link [2021-11-25 19:03:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_reg_read [2021-11-25 19:03:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_reg_read [2021-11-25 19:03:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:03:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:03:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 19:03:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 19:03:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_update_txcounters [2021-11-25 19:03:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_update_txcounters [2021-11-25 19:03:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_read_shift [2021-11-25 19:03:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_read_shift [2021-11-25 19:03:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:03:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:03:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_write_shift [2021-11-25 19:03:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_write_shift [2021-11-25 19:03:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:03:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:03:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:03:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:03:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-25 19:03:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-25 19:03:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-25 19:03:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-25 19:03:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_phy_enable_external [2021-11-25 19:03:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_phy_enable_external [2021-11-25 19:03:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:03:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_read [2021-11-25 19:03:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_read [2021-11-25 19:03:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:03:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:03:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 19:03:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 19:03:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:03:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:03:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc911x_cleanup_module_14_2 [2021-11-25 19:03:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc911x_cleanup_module_14_2 [2021-11-25 19:03:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_soft_reset [2021-11-25 19:03:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_soft_reset [2021-11-25 19:03:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_eeprom_enable_access [2021-11-25 19:03:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_eeprom_enable_access [2021-11-25 19:03:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-25 19:03:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-25 19:03:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure spin_is_locked [2021-11-25 19:03:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_is_locked [2021-11-25 19:03:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_stop [2021-11-25 19:03:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_stop [2021-11-25 19:03:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:03:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:03:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_writefifo_shift [2021-11-25 19:03:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_writefifo_shift [2021-11-25 19:03:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-25 19:03:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-25 19:03:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:03:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:03:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:03:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2021-11-25 19:03:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2021-11-25 19:03:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:03:18,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:03:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 19:03:18,022 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 19:03:19,125 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:03:19,130 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:03:19,453 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:03:22,431 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:03:22,532 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:03:23,436 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:03:23,436 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 19:03:23,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:03:23 BoogieIcfgContainer [2021-11-25 19:03:23,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:03:23,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:03:23,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:03:23,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:03:23,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:03:12" (1/3) ... [2021-11-25 19:03:23,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0c7481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:03:23, skipping insertion in model container [2021-11-25 19:03:23,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:03:17" (2/3) ... [2021-11-25 19:03:23,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0c7481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:03:23, skipping insertion in model container [2021-11-25 19:03:23,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:03:23" (3/3) ... [2021-11-25 19:03:23,450 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2021-11-25 19:03:23,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:03:23,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:03:23,513 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:03:23,520 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 19:03:23,520 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:03:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 2078 states, 1233 states have (on average 1.3090024330900243) internal successors, (1614), 1267 states have internal predecessors, (1614), 734 states have call successors, (734), 113 states have call predecessors, (734), 112 states have return successors, (725), 716 states have call predecessors, (725), 725 states have call successors, (725) [2021-11-25 19:03:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-25 19:03:23,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:23,612 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:03:23,613 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 19:03:23,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash 181106216, now seen corresponding path program 1 times [2021-11-25 19:03:23,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:23,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016828392] [2021-11-25 19:03:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:23,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 19:03:24,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:24,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016828392] [2021-11-25 19:03:24,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016828392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:24,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:24,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:24,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672205907] [2021-11-25 19:03:24,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:24,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:24,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:24,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:24,461 INFO L87 Difference]: Start difference. First operand has 2078 states, 1233 states have (on average 1.3090024330900243) internal successors, (1614), 1267 states have internal predecessors, (1614), 734 states have call successors, (734), 113 states have call predecessors, (734), 112 states have return successors, (725), 716 states have call predecessors, (725), 725 states have call successors, (725) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:03:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:26,108 INFO L93 Difference]: Finished difference Result 6071 states and 9446 transitions. [2021-11-25 19:03:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:26,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 211 [2021-11-25 19:03:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:26,164 INFO L225 Difference]: With dead ends: 6071 [2021-11-25 19:03:26,164 INFO L226 Difference]: Without dead ends: 4019 [2021-11-25 19:03:26,192 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 19:03:26,195 INFO L933 BasicCegarLoop]: 3393 mSDtfsCounter, 2925 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2925 SdHoareTripleChecker+Valid, 6064 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:26,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2925 Valid, 6064 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 19:03:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2021-11-25 19:03:26,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4019. [2021-11-25 19:03:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 2393 states have (on average 1.299623903050564) internal successors, (3110), 2462 states have internal predecessors, (3110), 1405 states have call successors, (1405), 221 states have call predecessors, (1405), 220 states have return successors, (1401), 1383 states have call predecessors, (1401), 1401 states have call successors, (1401) [2021-11-25 19:03:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5916 transitions. [2021-11-25 19:03:26,600 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5916 transitions. Word has length 211 [2021-11-25 19:03:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:26,602 INFO L470 AbstractCegarLoop]: Abstraction has 4019 states and 5916 transitions. [2021-11-25 19:03:26,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 19:03:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5916 transitions. [2021-11-25 19:03:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-25 19:03:26,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:26,620 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:26,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:03:26,620 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 19:03:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:26,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1302167541, now seen corresponding path program 1 times [2021-11-25 19:03:26,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:26,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795946677] [2021-11-25 19:03:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:26,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2021-11-25 19:03:27,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:27,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795946677] [2021-11-25 19:03:27,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795946677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:27,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:27,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:03:27,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527410079] [2021-11-25 19:03:27,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:27,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:03:27,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:03:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:03:27,141 INFO L87 Difference]: Start difference. First operand 4019 states and 5916 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:03:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:28,606 INFO L93 Difference]: Finished difference Result 4025 states and 5921 transitions. [2021-11-25 19:03:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:03:28,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 253 [2021-11-25 19:03:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:28,661 INFO L225 Difference]: With dead ends: 4025 [2021-11-25 19:03:28,662 INFO L226 Difference]: Without dead ends: 4021 [2021-11-25 19:03:28,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:03:28,671 INFO L933 BasicCegarLoop]: 2678 mSDtfsCounter, 2964 mSDsluCounter, 6033 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 8031 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:28,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2965 Valid, 8031 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 19:03:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-11-25 19:03:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 4021. [2021-11-25 19:03:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4021 states, 2395 states have (on average 1.2989561586638831) internal successors, (3111), 2463 states have internal predecessors, (3111), 1405 states have call successors, (1405), 222 states have call predecessors, (1405), 220 states have return successors, (1401), 1383 states have call predecessors, (1401), 1401 states have call successors, (1401) [2021-11-25 19:03:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 5917 transitions. [2021-11-25 19:03:28,975 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 5917 transitions. Word has length 253 [2021-11-25 19:03:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:28,978 INFO L470 AbstractCegarLoop]: Abstraction has 4021 states and 5917 transitions. [2021-11-25 19:03:28,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:03:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 5917 transitions. [2021-11-25 19:03:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-25 19:03:28,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:28,993 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:28,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:03:28,993 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 19:03:28,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash 639170196, now seen corresponding path program 1 times [2021-11-25 19:03:28,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:28,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854363826] [2021-11-25 19:03:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:28,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2021-11-25 19:03:29,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:29,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854363826] [2021-11-25 19:03:29,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854363826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:29,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:29,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:03:29,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654182920] [2021-11-25 19:03:29,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:29,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:03:29,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:29,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:03:29,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:03:29,382 INFO L87 Difference]: Start difference. First operand 4021 states and 5917 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:03:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:31,379 INFO L93 Difference]: Finished difference Result 8003 states and 11820 transitions. [2021-11-25 19:03:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:03:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 258 [2021-11-25 19:03:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:31,463 INFO L225 Difference]: With dead ends: 8003 [2021-11-25 19:03:31,464 INFO L226 Difference]: Without dead ends: 7981 [2021-11-25 19:03:31,472 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 19:03:31,473 INFO L933 BasicCegarLoop]: 3470 mSDtfsCounter, 2954 mSDsluCounter, 10608 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2954 SdHoareTripleChecker+Valid, 13050 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:31,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2954 Valid, 13050 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 19:03:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7981 states. [2021-11-25 19:03:32,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7979. [2021-11-25 19:03:32,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7979 states, 4760 states have (on average 1.3002100840336135) internal successors, (6189), 4896 states have internal predecessors, (6189), 2780 states have call successors, (2780), 440 states have call predecessors, (2780), 438 states have return successors, (2820), 2738 states have call predecessors, (2820), 2776 states have call successors, (2820) [2021-11-25 19:03:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7979 states to 7979 states and 11789 transitions. [2021-11-25 19:03:32,219 INFO L78 Accepts]: Start accepts. Automaton has 7979 states and 11789 transitions. Word has length 258 [2021-11-25 19:03:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:32,221 INFO L470 AbstractCegarLoop]: Abstraction has 7979 states and 11789 transitions. [2021-11-25 19:03:32,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:03:32,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7979 states and 11789 transitions. [2021-11-25 19:03:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2021-11-25 19:03:32,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:32,292 INFO L514 BasicCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:03:32,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:03:32,293 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 19:03:32,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash -401331111, now seen corresponding path program 1 times [2021-11-25 19:03:32,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:32,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046088060] [2021-11-25 19:03:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:32,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2924 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2021-11-25 19:03:32,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:32,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046088060] [2021-11-25 19:03:32,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046088060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:32,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:32,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:32,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108455175] [2021-11-25 19:03:32,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:32,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:32,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:32,734 INFO L87 Difference]: Start difference. First operand 7979 states and 11789 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-25 19:03:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:34,751 INFO L93 Difference]: Finished difference Result 23151 states and 34153 transitions. [2021-11-25 19:03:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 504 [2021-11-25 19:03:34,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:34,910 INFO L225 Difference]: With dead ends: 23151 [2021-11-25 19:03:34,910 INFO L226 Difference]: Without dead ends: 15211 [2021-11-25 19:03:34,976 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 19:03:34,990 INFO L933 BasicCegarLoop]: 3946 mSDtfsCounter, 2649 mSDsluCounter, 2934 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 6572 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:34,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2649 Valid, 6572 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 19:03:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15211 states. [2021-11-25 19:03:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15211 to 15190. [2021-11-25 19:03:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15190 states, 9010 states have (on average 1.2874583795782464) internal successors, (11600), 9279 states have internal predecessors, (11600), 5324 states have call successors, (5324), 857 states have call predecessors, (5324), 855 states have return successors, (5366), 5241 states have call predecessors, (5366), 5320 states have call successors, (5366) [2021-11-25 19:03:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15190 states to 15190 states and 22290 transitions. [2021-11-25 19:03:36,283 INFO L78 Accepts]: Start accepts. Automaton has 15190 states and 22290 transitions. Word has length 504 [2021-11-25 19:03:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:36,287 INFO L470 AbstractCegarLoop]: Abstraction has 15190 states and 22290 transitions. [2021-11-25 19:03:36,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-25 19:03:36,288 INFO L276 IsEmpty]: Start isEmpty. Operand 15190 states and 22290 transitions. [2021-11-25 19:03:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2021-11-25 19:03:36,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:36,376 INFO L514 BasicCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:03:36,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:03:36,377 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 19:03:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:36,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1147460387, now seen corresponding path program 1 times [2021-11-25 19:03:36,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:36,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353411684] [2021-11-25 19:03:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:36,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3028 trivial. 0 not checked. [2021-11-25 19:03:36,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353411684] [2021-11-25 19:03:36,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353411684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:36,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:36,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:36,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894387737] [2021-11-25 19:03:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:36,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:36,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:36,710 INFO L87 Difference]: Start difference. First operand 15190 states and 22290 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2021-11-25 19:03:38,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:38,826 INFO L93 Difference]: Finished difference Result 29797 states and 43632 transitions. [2021-11-25 19:03:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:38,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 507 [2021-11-25 19:03:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:38,931 INFO L225 Difference]: With dead ends: 29797 [2021-11-25 19:03:38,931 INFO L226 Difference]: Without dead ends: 14646 [2021-11-25 19:03:39,050 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 19:03:39,051 INFO L933 BasicCegarLoop]: 3979 mSDtfsCounter, 2878 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2878 SdHoareTripleChecker+Valid, 6633 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:39,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2878 Valid, 6633 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 19:03:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14646 states. [2021-11-25 19:03:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14646 to 14629. [2021-11-25 19:03:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14629 states, 8749 states have (on average 1.2873471253857585) internal successors, (11263), 9020 states have internal predecessors, (11263), 5013 states have call successors, (5013), 870 states have call predecessors, (5013), 866 states have return successors, (5053), 4922 states have call predecessors, (5053), 5009 states have call successors, (5053) [2021-11-25 19:03:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14629 states to 14629 states and 21329 transitions. [2021-11-25 19:03:40,376 INFO L78 Accepts]: Start accepts. Automaton has 14629 states and 21329 transitions. Word has length 507 [2021-11-25 19:03:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:40,376 INFO L470 AbstractCegarLoop]: Abstraction has 14629 states and 21329 transitions. [2021-11-25 19:03:40,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2021-11-25 19:03:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14629 states and 21329 transitions. [2021-11-25 19:03:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2021-11-25 19:03:40,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:40,447 INFO L514 BasicCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:03:40,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:03:40,447 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 19:03:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash -78529879, now seen corresponding path program 1 times [2021-11-25 19:03:40,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:40,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234106852] [2021-11-25 19:03:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:40,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3063 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3051 trivial. 0 not checked. [2021-11-25 19:03:40,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:40,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234106852] [2021-11-25 19:03:40,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234106852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:40,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:40,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:40,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506540654] [2021-11-25 19:03:40,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:40,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:40,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:40,785 INFO L87 Difference]: Start difference. First operand 14629 states and 21329 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-25 19:03:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:43,258 INFO L93 Difference]: Finished difference Result 34203 states and 49920 transitions. [2021-11-25 19:03:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:43,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 512 [2021-11-25 19:03:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:43,505 INFO L225 Difference]: With dead ends: 34203 [2021-11-25 19:03:43,505 INFO L226 Difference]: Without dead ends: 20585 [2021-11-25 19:03:43,576 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 19:03:43,577 INFO L933 BasicCegarLoop]: 5227 mSDtfsCounter, 2870 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 7882 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:43,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 7882 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 19:03:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20585 states. [2021-11-25 19:03:44,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20585 to 20568. [2021-11-25 19:03:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20568 states, 12328 states have (on average 1.2882868267358858) internal successors, (15882), 12714 states have internal predecessors, (15882), 7013 states have call successors, (7013), 1232 states have call predecessors, (7013), 1226 states have return successors, (7074), 6881 states have call predecessors, (7074), 7009 states have call successors, (7074) [2021-11-25 19:03:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20568 states to 20568 states and 29969 transitions. [2021-11-25 19:03:45,011 INFO L78 Accepts]: Start accepts. Automaton has 20568 states and 29969 transitions. Word has length 512 [2021-11-25 19:03:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:45,013 INFO L470 AbstractCegarLoop]: Abstraction has 20568 states and 29969 transitions. [2021-11-25 19:03:45,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-25 19:03:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 20568 states and 29969 transitions. [2021-11-25 19:03:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2021-11-25 19:03:45,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:45,084 INFO L514 BasicCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 11, 11, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:03:45,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:03:45,085 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 19:03:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:45,085 INFO L85 PathProgramCache]: Analyzing trace with hash -567411548, now seen corresponding path program 1 times [2021-11-25 19:03:45,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:45,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781533218] [2021-11-25 19:03:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:45,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3263 backedges. 56 proven. 10 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2021-11-25 19:03:45,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:45,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781533218] [2021-11-25 19:03:45,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781533218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:03:45,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90471078] [2021-11-25 19:03:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:45,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:03:45,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:03:45,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:03:45,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:03:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:47,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 4331 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 19:03:47,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3263 backedges. 44 proven. 1136 refuted. 0 times theorem prover too weak. 2083 trivial. 0 not checked. [2021-11-25 19:03:48,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:03:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3263 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3261 trivial. 0 not checked. [2021-11-25 19:03:50,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90471078] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:03:50,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:03:50,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 8] total 17 [2021-11-25 19:03:50,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998358492] [2021-11-25 19:03:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:50,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:03:50,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:03:50,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:03:50,431 INFO L87 Difference]: Start difference. First operand 20568 states and 29969 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (76), 4 states have call predecessors, (76), 2 states have return successors, (74), 4 states have call predecessors, (74), 3 states have call successors, (74) [2021-11-25 19:04:00,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:00,655 INFO L93 Difference]: Finished difference Result 31803 states and 46724 transitions. [2021-11-25 19:04:00,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:04:00,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (76), 4 states have call predecessors, (76), 2 states have return successors, (74), 4 states have call predecessors, (74), 3 states have call successors, (74) Word has length 550 [2021-11-25 19:04:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:00,913 INFO L225 Difference]: With dead ends: 31803 [2021-11-25 19:04:00,914 INFO L226 Difference]: Without dead ends: 31744 [2021-11-25 19:04:00,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 1090 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:04:00,932 INFO L933 BasicCegarLoop]: 3263 mSDtfsCounter, 6093 mSDsluCounter, 10187 mSDsCounter, 0 mSdLazyCounter, 6855 mSolverCounterSat, 2296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6627 SdHoareTripleChecker+Valid, 12053 SdHoareTripleChecker+Invalid, 9151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2296 IncrementalHoareTripleChecker+Valid, 6855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:00,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6627 Valid, 12053 Invalid, 9151 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2296 Valid, 6855 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-25 19:04:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31744 states. [2021-11-25 19:04:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31744 to 31732. [2021-11-25 19:04:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31732 states, 19019 states have (on average 1.2897628687102372) internal successors, (24530), 19602 states have internal predecessors, (24530), 10900 states have call successors, (10900), 1811 states have call predecessors, (10900), 1812 states have return successors, (11161), 10713 states have call predecessors, (11161), 10896 states have call successors, (11161) [2021-11-25 19:04:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31732 states to 31732 states and 46591 transitions. [2021-11-25 19:04:03,282 INFO L78 Accepts]: Start accepts. Automaton has 31732 states and 46591 transitions. Word has length 550 [2021-11-25 19:04:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:03,284 INFO L470 AbstractCegarLoop]: Abstraction has 31732 states and 46591 transitions. [2021-11-25 19:04:03,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (76), 4 states have call predecessors, (76), 2 states have return successors, (74), 4 states have call predecessors, (74), 3 states have call successors, (74) [2021-11-25 19:04:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 31732 states and 46591 transitions. [2021-11-25 19:04:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-11-25 19:04:03,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:03,368 INFO L514 BasicCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 12, 12, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:03,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:03,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:03,592 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 19:04:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:03,593 INFO L85 PathProgramCache]: Analyzing trace with hash 170733122, now seen corresponding path program 1 times [2021-11-25 19:04:03,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:03,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139636161] [2021-11-25 19:04:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:03,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3340 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 3278 trivial. 0 not checked. [2021-11-25 19:04:04,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:04,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139636161] [2021-11-25 19:04:04,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139636161] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:04:04,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288080031] [2021-11-25 19:04:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:04,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:04,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:04,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:04:04,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:04:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:05,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 4603 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:04:05,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3340 backedges. 130 proven. 3 refuted. 0 times theorem prover too weak. 3207 trivial. 0 not checked. [2021-11-25 19:04:06,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:04:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3340 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 3304 trivial. 0 not checked. [2021-11-25 19:04:08,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288080031] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:04:08,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:04:08,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2021-11-25 19:04:08,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242499436] [2021-11-25 19:04:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:08,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:04:08,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:08,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:04:08,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:04:08,368 INFO L87 Difference]: Start difference. First operand 31732 states and 46591 transitions. Second operand has 7 states, 6 states have (on average 26.5) internal successors, (159), 7 states have internal predecessors, (159), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2021-11-25 19:04:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:18,819 INFO L93 Difference]: Finished difference Result 71684 states and 105301 transitions. [2021-11-25 19:04:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:04:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 26.5) internal successors, (159), 7 states have internal predecessors, (159), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) Word has length 583 [2021-11-25 19:04:18,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:19,295 INFO L225 Difference]: With dead ends: 71684 [2021-11-25 19:04:19,295 INFO L226 Difference]: Without dead ends: 40951 [2021-11-25 19:04:19,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1158 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-11-25 19:04:19,436 INFO L933 BasicCegarLoop]: 2814 mSDtfsCounter, 4049 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 8894 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 5884 SdHoareTripleChecker+Invalid, 9611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 8894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:19,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4621 Valid, 5884 Invalid, 9611 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [717 Valid, 8894 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-11-25 19:04:19,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40951 states. [2021-11-25 19:04:21,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40951 to 40934. [2021-11-25 19:04:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40934 states, 24574 states have (on average 1.2913648571661105) internal successors, (31734), 25320 states have internal predecessors, (31734), 14005 states have call successors, (14005), 2347 states have call predecessors, (14005), 2354 states have return successors, (14351), 13778 states have call predecessors, (14351), 14001 states have call successors, (14351) [2021-11-25 19:04:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40934 states to 40934 states and 60090 transitions. [2021-11-25 19:04:22,233 INFO L78 Accepts]: Start accepts. Automaton has 40934 states and 60090 transitions. Word has length 583 [2021-11-25 19:04:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:22,234 INFO L470 AbstractCegarLoop]: Abstraction has 40934 states and 60090 transitions. [2021-11-25 19:04:22,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 26.5) internal successors, (159), 7 states have internal predecessors, (159), 4 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (82), 4 states have call predecessors, (82), 4 states have call successors, (82) [2021-11-25 19:04:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 40934 states and 60090 transitions. [2021-11-25 19:04:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2021-11-25 19:04:22,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:22,339 INFO L514 BasicCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 11, 11, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:22,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:22,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 19:04:22,562 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:22,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash 718181875, now seen corresponding path program 1 times [2021-11-25 19:04:22,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:22,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490654841] [2021-11-25 19:04:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:22,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 56 proven. 10 refuted. 0 times theorem prover too weak. 3245 trivial. 0 not checked. [2021-11-25 19:04:23,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:23,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490654841] [2021-11-25 19:04:23,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490654841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:04:23,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370416485] [2021-11-25 19:04:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:23,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:23,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:04:23,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_093882d5-c23a-4d25-be4d-ac282ed80fc2/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:04:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:24,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 4522 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-25 19:04:24,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 1374 proven. 19 refuted. 0 times theorem prover too weak. 1918 trivial. 0 not checked. [2021-11-25 19:04:25,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:04:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 3253 trivial. 0 not checked. [2021-11-25 19:04:27,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370416485] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:04:27,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1322427183] [2021-11-25 19:04:27,071 INFO L159 IcfgInterpreter]: Started Sifa with 253 locations of interest [2021-11-25 19:04:27,071 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:04:27,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:04:27,083 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:04:27,083 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:11:42,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:11:42,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5