./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:51:40,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:51:40,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:51:40,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:51:40,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:51:40,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:51:40,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:51:40,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:51:40,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:51:40,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:51:40,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:51:40,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:51:40,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:51:40,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:51:40,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:51:40,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:51:40,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:51:40,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:51:40,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:51:40,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:51:40,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:51:40,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:51:40,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:51:40,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:51:40,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:51:40,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:51:40,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:51:40,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:51:40,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:51:40,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:51:40,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:51:40,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:51:40,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:51:40,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:51:40,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:51:40,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:51:40,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:51:40,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:51:40,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:51:40,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:51:40,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:51:40,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:51:40,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:51:40,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:51:40,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:51:40,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:51:40,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:51:40,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:51:40,389 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:51:40,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:51:40,389 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:51:40,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:51:40,390 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:51:40,391 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:51:40,391 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:51:40,391 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:51:40,391 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:51:40,392 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:51:40,392 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:51:40,392 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:51:40,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:51:40,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:51:40,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:51:40,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:51:40,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:51:40,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:51:40,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:51:40,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:51:40,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:51:40,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:51:40,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:51:40,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:51:40,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:51:40,396 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:51:40,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:51:40,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:51:40,396 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:51:40,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:51:40,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:51:40,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:51:40,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 [2022-11-23 13:51:40,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:51:40,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:51:40,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:51:40,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:51:40,714 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:51:40,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2022-11-23 13:51:43,895 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:51:44,583 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:51:44,583 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2022-11-23 13:51:44,640 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/data/2f078bf77/eaab4aa6c0354a3da8d88dd581764f85/FLAG84c04f6d4 [2022-11-23 13:51:44,663 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/data/2f078bf77/eaab4aa6c0354a3da8d88dd581764f85 [2022-11-23 13:51:44,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:51:44,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:51:44,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:51:44,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:51:44,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:51:44,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:44" (1/1) ... [2022-11-23 13:51:44,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1bcabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:44, skipping insertion in model container [2022-11-23 13:51:44,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:44" (1/1) ... [2022-11-23 13:51:44,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:51:44,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:51:47,610 WARN L237 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_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2022-11-23 13:51:47,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:51:47,691 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:51:48,238 WARN L237 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_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2022-11-23 13:51:48,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:51:48,488 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:51:48,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48 WrapperNode [2022-11-23 13:51:48,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:51:48,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:51:48,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:51:48,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:51:48,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:48,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:48,861 INFO L138 Inliner]: procedures = 426, calls = 2225, calls flagged for inlining = 256, calls inlined = 245, statements flattened = 6046 [2022-11-23 13:51:48,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:51:48,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:51:48,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:51:48,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:51:48,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:48,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:48,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:48,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:49,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:49,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:49,204 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:49,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:49,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:51:49,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:51:49,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:51:49,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:51:49,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (1/1) ... [2022-11-23 13:51:49,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:51:49,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:51:49,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:51:49,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_300ceece-79f6-4c5d-b8ba-e4138e2a2a29/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:51:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 13:51:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 13:51:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 13:51:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 13:51:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 13:51:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 13:51:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 13:51:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 13:51:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2022-11-23 13:51:49,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2022-11-23 13:51:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-23 13:51:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-23 13:51:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 13:51:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 13:51:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 13:51:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 13:51:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_hwaddr [2022-11-23 13:51:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_hwaddr [2022-11-23 13:51:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_regs_len [2022-11-23 13:51:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_regs_len [2022-11-23 13:51:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 13:51:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 13:51:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2022-11-23 13:51:49,394 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2022-11-23 13:51:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 13:51:49,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 13:51:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 13:51:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 13:51:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 13:51:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 13:51:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 13:51:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 13:51:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-23 13:51:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-23 13:51:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 13:51:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 13:51:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:51:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure macb_remove [2022-11-23 13:51:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_remove [2022-11-23 13:51:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 13:51:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 13:51:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-23 13:51:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-23 13:51:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 13:51:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 13:51:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 13:51:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2022-11-23 13:51:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2022-11-23 13:51:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 13:51:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 13:51:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-23 13:51:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-23 13:51:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:51:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 13:51:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 13:51:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:51:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 13:51:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 13:51:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure macb_free_consistent [2022-11-23 13:51:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_free_consistent [2022-11-23 13:51:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 13:51:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 13:51:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-23 13:51:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-23 13:51:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 13:51:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 13:51:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2022-11-23 13:51:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2022-11-23 13:51:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 13:51:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 13:51:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2022-11-23 13:51:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2022-11-23 13:51:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure macb_resume [2022-11-23 13:51:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_resume [2022-11-23 13:51:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:51:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 13:51:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 13:51:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 13:51:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 13:51:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 13:51:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 13:51:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2022-11-23 13:51:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2022-11-23 13:51:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure macb_is_gem [2022-11-23 13:51:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_is_gem [2022-11-23 13:51:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-23 13:51:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-23 13:51:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:51:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 13:51:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 13:51:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure macb_rx_ring_wrap [2022-11-23 13:51:49,410 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_rx_ring_wrap [2022-11-23 13:51:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:51:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:51:49,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:51:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:51:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 13:51:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-23 13:51:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-23 13:51:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 13:51:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 13:51:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 13:51:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 13:51:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 13:51:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 13:51:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2022-11-23 13:51:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2022-11-23 13:51:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-23 13:51:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-23 13:51:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:51:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:51:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 13:51:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 13:51:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-11-23 13:51:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-11-23 13:51:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 13:51:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:51:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 13:51:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 13:51:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2022-11-23 13:51:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2022-11-23 13:51:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure phy_find_first [2022-11-23 13:51:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_find_first [2022-11-23 13:51:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 13:51:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 13:51:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_ring_wrap [2022-11-23 13:51:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_ring_wrap [2022-11-23 13:51:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 13:51:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 13:51:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2022-11-23 13:51:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2022-11-23 13:51:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_hwaddr [2022-11-23 13:51:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_hwaddr [2022-11-23 13:51:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 13:51:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 13:51:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure macb_handle_link_change [2022-11-23 13:51:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_handle_link_change [2022-11-23 13:51:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mii_init [2022-11-23 13:51:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mii_init [2022-11-23 13:51:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_14 [2022-11-23 13:51:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_14 [2022-11-23 13:51:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_16 [2022-11-23 13:51:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_16 [2022-11-23 13:51:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_15 [2022-11-23 13:51:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_15 [2022-11-23 13:51:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure macb_close [2022-11-23 13:51:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_close [2022-11-23 13:51:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mdc_clk_div [2022-11-23 13:51:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mdc_clk_div [2022-11-23 13:51:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-23 13:51:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-23 13:51:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 13:51:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 13:51:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_19 [2022-11-23 13:51:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_19 [2022-11-23 13:51:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:51:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2022-11-23 13:51:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2022-11-23 13:51:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-23 13:51:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-23 13:51:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 13:51:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 13:51:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_21 [2022-11-23 13:51:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_21 [2022-11-23 13:51:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:51:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_20 [2022-11-23 13:51:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_20 [2022-11-23 13:51:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure clk_get_rate [2022-11-23 13:51:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_get_rate [2022-11-23 13:51:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:51:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_rx_mode [2022-11-23 13:51:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_rx_mode [2022-11-23 13:51:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_desc [2022-11-23 13:51:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_desc [2022-11-23 13:51:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-23 13:51:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-23 13:51:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 13:51:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 13:51:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure macb_reset_hw [2022-11-23 13:51:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_reset_hw [2022-11-23 13:51:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 13:51:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 13:51:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure macb_suspend [2022-11-23 13:51:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_suspend [2022-11-23 13:51:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure devm_clk_get [2022-11-23 13:51:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_clk_get [2022-11-23 13:51:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 13:51:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 13:51:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure macb_dbw [2022-11-23 13:51:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_dbw [2022-11-23 13:51:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 13:51:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 13:51:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-23 13:51:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-23 13:51:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 13:51:49,422 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 13:51:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 13:51:49,422 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 13:51:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure devm_pinctrl_put [2022-11-23 13:51:49,422 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_pinctrl_put [2022-11-23 13:51:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 13:51:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 13:51:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 13:51:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 13:51:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:51:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 13:51:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 13:51:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure gem_rx_refill [2022-11-23 13:51:49,423 INFO L138 BoogieDeclarations]: Found implementation of procedure gem_rx_refill [2022-11-23 13:51:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 13:51:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 13:51:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_dma [2022-11-23 13:51:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_dma [2022-11-23 13:51:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_skb [2022-11-23 13:51:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_skb [2022-11-23 13:51:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure macb_interrupt [2022-11-23 13:51:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_interrupt [2022-11-23 13:51:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 13:51:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 13:51:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2022-11-23 13:51:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2022-11-23 13:51:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 13:51:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 13:51:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2022-11-23 13:51:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2022-11-23 13:51:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-23 13:51:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-23 13:51:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:51:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 13:51:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 13:51:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 13:51:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 13:51:50,427 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:51:50,431 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:51:50,562 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 13:51:58,310 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 13:51:58,445 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:52:00,124 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:52:00,124 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:52:00,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:00 BoogieIcfgContainer [2022-11-23 13:52:00,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:52:00,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:52:00,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:52:00,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:52:00,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:51:44" (1/3) ... [2022-11-23 13:52:00,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee5f083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:00, skipping insertion in model container [2022-11-23 13:52:00,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:48" (2/3) ... [2022-11-23 13:52:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee5f083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:00, skipping insertion in model container [2022-11-23 13:52:00,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:00" (3/3) ... [2022-11-23 13:52:00,153 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2022-11-23 13:52:00,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:52:00,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:52:00,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:52:00,285 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@12a215a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:52:00,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:52:00,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 1610 states, 980 states have (on average 1.2948979591836736) internal successors, (1269), 998 states have internal predecessors, (1269), 522 states have call successors, (522), 108 states have call predecessors, (522), 107 states have return successors, (515), 510 states have call predecessors, (515), 515 states have call successors, (515) [2022-11-23 13:52:00,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-23 13:52:00,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:00,317 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:00,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1041916153, now seen corresponding path program 1 times [2022-11-23 13:52:00,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:00,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860882343] [2022-11-23 13:52:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:00,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-23 13:52:01,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:01,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860882343] [2022-11-23 13:52:01,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860882343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:01,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:01,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:52:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189662097] [2022-11-23 13:52:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:01,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:52:01,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:01,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:52:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:52:01,331 INFO L87 Difference]: Start difference. First operand has 1610 states, 980 states have (on average 1.2948979591836736) internal successors, (1269), 998 states have internal predecessors, (1269), 522 states have call successors, (522), 108 states have call predecessors, (522), 107 states have return successors, (515), 510 states have call predecessors, (515), 515 states have call successors, (515) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 13:52:03,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:07,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:10,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:10,863 INFO L93 Difference]: Finished difference Result 4727 states and 6782 transitions. [2022-11-23 13:52:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:52:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2022-11-23 13:52:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:10,907 INFO L225 Difference]: With dead ends: 4727 [2022-11-23 13:52:10,908 INFO L226 Difference]: Without dead ends: 3128 [2022-11-23 13:52:10,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:52:10,927 INFO L413 NwaCegarLoop]: 2463 mSDtfsCounter, 2226 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 4403 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:10,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2226 Valid, 4403 Invalid, 677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 672 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2022-11-23 13:52:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2022-11-23 13:52:11,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3128. [2022-11-23 13:52:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 1914 states have (on average 1.2920585161964473) internal successors, (2473), 1950 states have internal predecessors, (2473), 1002 states have call successors, (1002), 212 states have call predecessors, (1002), 211 states have return successors, (999), 989 states have call predecessors, (999), 999 states have call successors, (999) [2022-11-23 13:52:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4474 transitions. [2022-11-23 13:52:11,255 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4474 transitions. Word has length 127 [2022-11-23 13:52:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:11,259 INFO L495 AbstractCegarLoop]: Abstraction has 3128 states and 4474 transitions. [2022-11-23 13:52:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 13:52:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4474 transitions. [2022-11-23 13:52:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-23 13:52:11,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:11,294 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:11,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:52:11,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:11,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1119650744, now seen corresponding path program 1 times [2022-11-23 13:52:11,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:11,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605073426] [2022-11-23 13:52:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:11,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2022-11-23 13:52:12,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:12,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605073426] [2022-11-23 13:52:12,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605073426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:12,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:12,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:52:12,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77072899] [2022-11-23 13:52:12,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:12,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:52:12,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:12,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:52:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:52:12,085 INFO L87 Difference]: Start difference. First operand 3128 states and 4474 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 13:52:14,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:19,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:20,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:23,656 INFO L93 Difference]: Finished difference Result 6239 states and 8919 transitions. [2022-11-23 13:52:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:52:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2022-11-23 13:52:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:23,705 INFO L225 Difference]: With dead ends: 6239 [2022-11-23 13:52:23,706 INFO L226 Difference]: Without dead ends: 6237 [2022-11-23 13:52:23,712 INFO L412 NwaCegarLoop]: 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 [2022-11-23 13:52:23,713 INFO L413 NwaCegarLoop]: 2444 mSDtfsCounter, 2241 mSDsluCounter, 6797 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 9241 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:23,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 9241 Invalid, 1348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1344 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-11-23 13:52:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2022-11-23 13:52:24,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6235. [2022-11-23 13:52:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6235 states, 3818 states have (on average 1.2928234677841801) internal successors, (4936), 3890 states have internal predecessors, (4936), 1993 states have call successors, (1993), 425 states have call predecessors, (1993), 423 states have return successors, (1987), 1967 states have call predecessors, (1987), 1987 states have call successors, (1987) [2022-11-23 13:52:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 8916 transitions. [2022-11-23 13:52:24,124 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 8916 transitions. Word has length 165 [2022-11-23 13:52:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:24,125 INFO L495 AbstractCegarLoop]: Abstraction has 6235 states and 8916 transitions. [2022-11-23 13:52:24,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 13:52:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 8916 transitions. [2022-11-23 13:52:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-23 13:52:24,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:24,135 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:24,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:52:24,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash -827870896, now seen corresponding path program 1 times [2022-11-23 13:52:24,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:24,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176595103] [2022-11-23 13:52:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:24,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2022-11-23 13:52:24,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:24,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176595103] [2022-11-23 13:52:24,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176595103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:24,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:24,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:52:24,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137772050] [2022-11-23 13:52:24,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:24,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:52:24,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:52:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:52:24,754 INFO L87 Difference]: Start difference. First operand 6235 states and 8916 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 13:52:30,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:32,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:34,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:36,163 INFO L93 Difference]: Finished difference Result 12037 states and 17399 transitions. [2022-11-23 13:52:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:52:36,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 170 [2022-11-23 13:52:36,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:36,258 INFO L225 Difference]: With dead ends: 12037 [2022-11-23 13:52:36,258 INFO L226 Difference]: Without dead ends: 12035 [2022-11-23 13:52:36,269 INFO L412 NwaCegarLoop]: 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 [2022-11-23 13:52:36,270 INFO L413 NwaCegarLoop]: 2484 mSDtfsCounter, 2140 mSDsluCounter, 6871 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 9355 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:36,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 9355 Invalid, 1378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1373 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-23 13:52:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12035 states. [2022-11-23 13:52:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12035 to 11945. [2022-11-23 13:52:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11945 states, 7313 states have (on average 1.2964583618214138) internal successors, (9481), 7489 states have internal predecessors, (9481), 3807 states have call successors, (3807), 828 states have call predecessors, (3807), 824 states have return successors, (3987), 3719 states have call predecessors, (3987), 3795 states have call successors, (3987) [2022-11-23 13:52:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11945 states to 11945 states and 17275 transitions. [2022-11-23 13:52:37,205 INFO L78 Accepts]: Start accepts. Automaton has 11945 states and 17275 transitions. Word has length 170 [2022-11-23 13:52:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:37,206 INFO L495 AbstractCegarLoop]: Abstraction has 11945 states and 17275 transitions. [2022-11-23 13:52:37,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 13:52:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand 11945 states and 17275 transitions. [2022-11-23 13:52:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-23 13:52:37,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:37,218 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:37,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:52:37,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash -886154632, now seen corresponding path program 1 times [2022-11-23 13:52:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:37,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702001310] [2022-11-23 13:52:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-11-23 13:52:37,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:37,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702001310] [2022-11-23 13:52:37,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702001310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:37,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:37,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:52:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119019530] [2022-11-23 13:52:37,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:37,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:52:37,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:52:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:52:37,777 INFO L87 Difference]: Start difference. First operand 11945 states and 17275 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 13:52:40,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:44,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:48,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:48,214 INFO L93 Difference]: Finished difference Result 23277 states and 34197 transitions. [2022-11-23 13:52:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:52:48,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 175 [2022-11-23 13:52:48,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:48,393 INFO L225 Difference]: With dead ends: 23277 [2022-11-23 13:52:48,393 INFO L226 Difference]: Without dead ends: 23273 [2022-11-23 13:52:48,412 INFO L412 NwaCegarLoop]: 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 [2022-11-23 13:52:48,413 INFO L413 NwaCegarLoop]: 2483 mSDtfsCounter, 2127 mSDsluCounter, 6875 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 9358 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:48,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 9358 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1372 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2022-11-23 13:52:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23273 states. [2022-11-23 13:52:49,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23273 to 23143. [2022-11-23 13:52:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23143 states, 14184 states have (on average 1.2994218838127467) internal successors, (18431), 14563 states have internal predecessors, (18431), 7359 states have call successors, (7359), 1620 states have call predecessors, (7359), 1599 states have return successors, (8231), 7135 states have call predecessors, (8231), 7335 states have call successors, (8231) [2022-11-23 13:52:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23143 states to 23143 states and 34021 transitions. [2022-11-23 13:52:50,081 INFO L78 Accepts]: Start accepts. Automaton has 23143 states and 34021 transitions. Word has length 175 [2022-11-23 13:52:50,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:50,081 INFO L495 AbstractCegarLoop]: Abstraction has 23143 states and 34021 transitions. [2022-11-23 13:52:50,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 13:52:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 23143 states and 34021 transitions. [2022-11-23 13:52:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-23 13:52:50,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:50,098 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:50,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:52:50,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash -138165863, now seen corresponding path program 1 times [2022-11-23 13:52:50,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:50,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533633111] [2022-11-23 13:52:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:50,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2022-11-23 13:52:50,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:50,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533633111] [2022-11-23 13:52:50,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533633111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:50,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:50,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:52:50,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931962896] [2022-11-23 13:52:50,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:50,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:52:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:50,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:52:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:52:50,665 INFO L87 Difference]: Start difference. First operand 23143 states and 34021 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 13:52:54,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:52:58,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:53:01,416 INFO L93 Difference]: Finished difference Result 46261 states and 69577 transitions. [2022-11-23 13:53:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:53:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 189 [2022-11-23 13:53:01,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:53:01,750 INFO L225 Difference]: With dead ends: 46261 [2022-11-23 13:53:01,751 INFO L226 Difference]: Without dead ends: 46172 [2022-11-23 13:53:01,791 INFO L412 NwaCegarLoop]: 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 [2022-11-23 13:53:01,792 INFO L413 NwaCegarLoop]: 2485 mSDtfsCounter, 2259 mSDsluCounter, 6897 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 9382 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:53:01,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 9382 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-23 13:53:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46172 states. [2022-11-23 13:53:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46172 to 46144. [2022-11-23 13:53:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46144 states, 28289 states have (on average 1.2999399059705186) internal successors, (36774), 29054 states have internal predecessors, (36774), 14674 states have call successors, (14674), 3224 states have call predecessors, (14674), 3180 states have return successors, (17989), 14217 states have call predecessors, (17989), 14629 states have call successors, (17989) [2022-11-23 13:53:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46144 states to 46144 states and 69437 transitions. [2022-11-23 13:53:05,886 INFO L78 Accepts]: Start accepts. Automaton has 46144 states and 69437 transitions. Word has length 189 [2022-11-23 13:53:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:53:05,888 INFO L495 AbstractCegarLoop]: Abstraction has 46144 states and 69437 transitions. [2022-11-23 13:53:05,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 13:53:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 46144 states and 69437 transitions. [2022-11-23 13:53:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-23 13:53:05,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:53:05,926 INFO L195 NwaCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:53:05,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:53:05,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:53:05,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:53:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash -172550606, now seen corresponding path program 1 times [2022-11-23 13:53:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:53:05,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014318325] [2022-11-23 13:53:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:53:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:53:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-23 13:53:11,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:53:11,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014318325] [2022-11-23 13:53:11,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014318325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:53:11,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:53:11,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:53:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217073164] [2022-11-23 13:53:11,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:53:11,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:53:11,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:53:11,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:53:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:53:11,477 INFO L87 Difference]: Start difference. First operand 46144 states and 69437 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-23 13:53:16,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:18,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:53:21,586 INFO L93 Difference]: Finished difference Result 133026 states and 204903 transitions. [2022-11-23 13:53:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:53:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 201 [2022-11-23 13:53:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:53:22,264 INFO L225 Difference]: With dead ends: 133026 [2022-11-23 13:53:22,265 INFO L226 Difference]: Without dead ends: 86905 [2022-11-23 13:53:22,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:53:22,727 INFO L413 NwaCegarLoop]: 2420 mSDtfsCounter, 2007 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:53:22,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 4339 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 697 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 13:53:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86905 states. [2022-11-23 13:53:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86905 to 86639. [2022-11-23 13:53:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86639 states, 53036 states have (on average 1.2930650878648464) internal successors, (68579), 54535 states have internal predecessors, (68579), 27430 states have call successors, (27430), 6276 states have call predecessors, (27430), 6172 states have return successors, (39049), 26443 states have call predecessors, (39049), 27385 states have call successors, (39049) [2022-11-23 13:53:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86639 states to 86639 states and 135058 transitions. [2022-11-23 13:53:29,126 INFO L78 Accepts]: Start accepts. Automaton has 86639 states and 135058 transitions. Word has length 201 [2022-11-23 13:53:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:53:29,127 INFO L495 AbstractCegarLoop]: Abstraction has 86639 states and 135058 transitions. [2022-11-23 13:53:29,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-23 13:53:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 86639 states and 135058 transitions. [2022-11-23 13:53:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-23 13:53:29,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:53:29,159 INFO L195 NwaCegarLoop]: trace histogram [18, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:53:29,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:53:29,160 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:53:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:53:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash -643903520, now seen corresponding path program 1 times [2022-11-23 13:53:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:53:29,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200804392] [2022-11-23 13:53:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:29,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:53:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:53:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2022-11-23 13:53:29,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:53:29,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200804392] [2022-11-23 13:53:29,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200804392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:53:29,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:53:29,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:53:29,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228969223] [2022-11-23 13:53:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:53:29,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:53:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:53:29,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:53:29,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:53:29,448 INFO L87 Difference]: Start difference. First operand 86639 states and 135058 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-23 13:53:36,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:39,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 13:53:44,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:53:44,700 INFO L93 Difference]: Finished difference Result 245975 states and 374218 transitions. [2022-11-23 13:53:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:53:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 229 [2022-11-23 13:53:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:53:46,182 INFO L225 Difference]: With dead ends: 245975 [2022-11-23 13:53:46,183 INFO L226 Difference]: Without dead ends: 159359 [2022-11-23 13:53:46,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:53:46,575 INFO L413 NwaCegarLoop]: 3065 mSDtfsCounter, 2037 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:53:46,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 4958 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-23 13:53:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159359 states.