./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-ethoc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V --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 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:41:41,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:41:41,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:41:41,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:41:41,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:41:41,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:41:41,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:41:41,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:41:41,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:41:41,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:41:41,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:41:41,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:41:41,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:41:41,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:41:41,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:41:41,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:41:41,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:41:41,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:41:41,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:41:41,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:41:41,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:41:41,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:41:41,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:41:41,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:41:41,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:41:41,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:41:41,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:41:41,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:41:41,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:41:41,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:41:41,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:41:41,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:41:41,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:41:41,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:41:41,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:41:41,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:41:41,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:41:41,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:41:41,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:41:41,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:41:41,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:41:41,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:41:41,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:41:41,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:41:41,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:41:41,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:41:41,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:41:41,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:41:41,280 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:41:41,280 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:41:41,280 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:41:41,280 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:41:41,282 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:41:41,282 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:41:41,283 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:41:41,283 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:41:41,283 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:41:41,283 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:41:41,284 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:41:41,284 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:41:41,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:41:41,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:41:41,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:41:41,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:41:41,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:41:41,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:41:41,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:41:41,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:41:41,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:41:41,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:41:41,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:41:41,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:41,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:41:41,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:41:41,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:41:41,292 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:41:41,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:41:41,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:41:41,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:41:41,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:41:41,294 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 [2021-11-23 03:41:41,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:41:41,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:41:41,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:41:41,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:41:41,682 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:41:41,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-23 03:41:41,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/data/8e6c7715b/5f988744ba3d413bbe9af9d44c3a9a8f/FLAGcb1796099 [2021-11-23 03:41:42,798 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:41:42,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-23 03:41:42,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/data/8e6c7715b/5f988744ba3d413bbe9af9d44c3a9a8f/FLAGcb1796099 [2021-11-23 03:41:43,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/data/8e6c7715b/5f988744ba3d413bbe9af9d44c3a9a8f [2021-11-23 03:41:43,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:41:43,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:41:43,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:43,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:41:43,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:41:43,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:43" (1/1) ... [2021-11-23 03:41:43,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff4f3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:43, skipping insertion in model container [2021-11-23 03:41:43,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:43" (1/1) ... [2021-11-23 03:41:43,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:41:43,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:41:46,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2021-11-23 03:41:46,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:46,354 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:41:46,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2021-11-23 03:41:46,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:41:47,142 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:41:47,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47 WrapperNode [2021-11-23 03:41:47,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:41:47,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:47,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:41:47,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:41:47,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,497 INFO L137 Inliner]: procedures = 347, calls = 1403, calls flagged for inlining = 224, calls inlined = 207, statements flattened = 3854 [2021-11-23 03:41:47,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:41:47,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:41:47,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:41:47,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:41:47,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:41:47,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:41:47,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:41:47,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:41:47,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2021-11-23 03:41:47,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:41:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:41:47,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:41:47,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:41:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-23 03:41:47,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-23 03:41:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:41:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:41:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:41:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:41:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:41:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:41:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-23 03:41:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-23 03:41:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_read_bd [2021-11-23 03:41:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_read_bd [2021-11-23 03:41:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 03:41:47,902 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 03:41:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:41:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:41:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 03:41:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_mdio_poll [2021-11-23 03:41:47,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_mdio_poll [2021-11-23 03:41:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-23 03:41:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-23 03:41:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:41:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:41:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 03:41:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 03:41:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_stop [2021-11-23 03:41:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_stop [2021-11-23 03:41:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:41:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_15 [2021-11-23 03:41:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_15 [2021-11-23 03:41:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_ack_irq [2021-11-23 03:41:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_ack_irq [2021-11-23 03:41:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 03:41:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 03:41:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:41:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:41:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:41:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 03:41:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 03:41:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:41:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:41:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-23 03:41:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-23 03:41:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:41:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_get_regs_len [2021-11-23 03:41:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_get_regs_len [2021-11-23 03:41:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_read [2021-11-23 03:41:47,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_read [2021-11-23 03:41:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-23 03:41:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-23 03:41:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:41:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_disable_rx_and_tx [2021-11-23 03:41:47,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_disable_rx_and_tx [2021-11-23 03:41:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_do_set_mac_address [2021-11-23 03:41:47,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_do_set_mac_address [2021-11-23 03:41:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_enable_rx_and_tx [2021-11-23 03:41:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_enable_rx_and_tx [2021-11-23 03:41:47,914 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_init_ring [2021-11-23 03:41:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_init_ring [2021-11-23 03:41:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure devm_ioremap_nocache [2021-11-23 03:41:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_ioremap_nocache [2021-11-23 03:41:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:41:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:41:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:41:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:41:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:41:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:41:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure __rounddown_pow_of_two [2021-11-23 03:41:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __rounddown_pow_of_two [2021-11-23 03:41:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:41:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:41:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:41:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:41:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:41:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 03:41:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 03:41:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 03:41:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 03:41:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:41:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:41:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-23 03:41:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-23 03:41:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_interrupt [2021-11-23 03:41:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_interrupt [2021-11-23 03:41:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:41:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:41:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:41:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:41:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:41:47,924 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:41:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:41:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:41:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:41:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_probe [2021-11-23 03:41:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_probe [2021-11-23 03:41:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:41:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure __devm_request_region [2021-11-23 03:41:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __devm_request_region [2021-11-23 03:41:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_resume [2021-11-23 03:41:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_resume [2021-11-23 03:41:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 03:41:47,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 03:41:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 03:41:47,928 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 03:41:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 03:41:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 03:41:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 03:41:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 03:41:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:41:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-23 03:41:47,931 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-23 03:41:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_write_bd [2021-11-23 03:41:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_write_bd [2021-11-23 03:41:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:41:47,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:41:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:41:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:41:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_write [2021-11-23 03:41:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_write [2021-11-23 03:41:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:41:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:41:47,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:41:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:41:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-23 03:41:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-23 03:41:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_enable_irq [2021-11-23 03:41:47,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_enable_irq [2021-11-23 03:41:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_open [2021-11-23 03:41:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_open [2021-11-23 03:41:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:41:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:41:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_disable_irq [2021-11-23 03:41:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_disable_irq [2021-11-23 03:41:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 03:41:47,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 03:41:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_remove [2021-11-23 03:41:47,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_remove [2021-11-23 03:41:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:41:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:41:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:41:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2021-11-23 03:41:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2021-11-23 03:41:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:41:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:41:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_tx_timeout [2021-11-23 03:41:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_tx_timeout [2021-11-23 03:41:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:41:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:41:48,973 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:41:48,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:41:49,215 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:42:11,174 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:42:11,318 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:42:12,302 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:42:12,302 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 03:42:12,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:12 BoogieIcfgContainer [2021-11-23 03:42:12,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:42:12,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:42:12,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:42:12,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:42:12,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:43" (1/3) ... [2021-11-23 03:42:12,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c614d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:12, skipping insertion in model container [2021-11-23 03:42:12,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (2/3) ... [2021-11-23 03:42:12,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c614d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:12, skipping insertion in model container [2021-11-23 03:42:12,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:12" (3/3) ... [2021-11-23 03:42:12,319 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-23 03:42:12,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:42:12,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:42:12,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:42:12,422 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:42:12,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:42:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 960 states, 596 states have (on average 1.3288590604026846) internal successors, (792), 610 states have internal predecessors, (792), 299 states have call successors, (299), 65 states have call predecessors, (299), 64 states have return successors, (292), 290 states have call predecessors, (292), 292 states have call successors, (292) [2021-11-23 03:42:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 03:42:12,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:12,523 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:12,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:12,531 INFO L85 PathProgramCache]: Analyzing trace with hash 372903008, now seen corresponding path program 1 times [2021-11-23 03:42:12,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:12,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537340845] [2021-11-23 03:42:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:12,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-23 03:42:13,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:13,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537340845] [2021-11-23 03:42:13,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537340845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:13,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:13,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:42:13,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889484115] [2021-11-23 03:42:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:13,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:42:13,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:13,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:42:13,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:13,531 INFO L87 Difference]: Start difference. First operand has 960 states, 596 states have (on average 1.3288590604026846) internal successors, (792), 610 states have internal predecessors, (792), 299 states have call successors, (299), 65 states have call predecessors, (299), 64 states have return successors, (292), 290 states have call predecessors, (292), 292 states have call successors, (292) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-23 03:42:15,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:18,511 INFO L93 Difference]: Finished difference Result 2775 states and 4009 transitions. [2021-11-23 03:42:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:42:18,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 137 [2021-11-23 03:42:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:18,559 INFO L225 Difference]: With dead ends: 2775 [2021-11-23 03:42:18,559 INFO L226 Difference]: Without dead ends: 1828 [2021-11-23 03:42:18,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:18,576 INFO L933 BasicCegarLoop]: 1395 mSDtfsCounter, 1304 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:18,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 2489 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 03:42:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-11-23 03:42:18,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1828. [2021-11-23 03:42:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1145 states have (on average 1.325764192139738) internal successors, (1518), 1173 states have internal predecessors, (1518), 557 states have call successors, (557), 126 states have call predecessors, (557), 125 states have return successors, (554), 550 states have call predecessors, (554), 554 states have call successors, (554) [2021-11-23 03:42:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2629 transitions. [2021-11-23 03:42:18,928 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2629 transitions. Word has length 137 [2021-11-23 03:42:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:18,929 INFO L470 AbstractCegarLoop]: Abstraction has 1828 states and 2629 transitions. [2021-11-23 03:42:18,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-23 03:42:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2629 transitions. [2021-11-23 03:42:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-23 03:42:18,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:18,942 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1] [2021-11-23 03:42:18,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:42:18,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash 269102246, now seen corresponding path program 1 times [2021-11-23 03:42:18,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:18,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064830602] [2021-11-23 03:42:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:18,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-23 03:42:19,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:19,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064830602] [2021-11-23 03:42:19,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064830602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:19,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:19,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:19,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599058963] [2021-11-23 03:42:19,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:19,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:19,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:19,390 INFO L87 Difference]: Start difference. First operand 1828 states and 2629 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:42:21,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:26,205 INFO L93 Difference]: Finished difference Result 3637 states and 5274 transitions. [2021-11-23 03:42:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:42:26,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 175 [2021-11-23 03:42:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:26,257 INFO L225 Difference]: With dead ends: 3637 [2021-11-23 03:42:26,258 INFO L226 Difference]: Without dead ends: 3633 [2021-11-23 03:42:26,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:42:26,267 INFO L933 BasicCegarLoop]: 1374 mSDtfsCounter, 1318 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:26,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1319 Valid, 5208 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1033 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 03:42:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2021-11-23 03:42:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3629. [2021-11-23 03:42:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 2276 states have (on average 1.327328646748682) internal successors, (3021), 2333 states have internal predecessors, (3021), 1102 states have call successors, (1102), 253 states have call predecessors, (1102), 250 states have return successors, (1144), 1086 states have call predecessors, (1144), 1096 states have call successors, (1144) [2021-11-23 03:42:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 5267 transitions. [2021-11-23 03:42:26,560 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 5267 transitions. Word has length 175 [2021-11-23 03:42:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:26,561 INFO L470 AbstractCegarLoop]: Abstraction has 3629 states and 5267 transitions. [2021-11-23 03:42:26,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:42:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 5267 transitions. [2021-11-23 03:42:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-23 03:42:26,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:26,574 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1] [2021-11-23 03:42:26,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:42:26,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:26,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash 646385888, now seen corresponding path program 1 times [2021-11-23 03:42:26,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:26,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318947680] [2021-11-23 03:42:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:26,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-23 03:42:27,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:27,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318947680] [2021-11-23 03:42:27,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318947680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:27,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:27,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:42:27,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020658783] [2021-11-23 03:42:27,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:27,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:42:27,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:42:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:27,088 INFO L87 Difference]: Start difference. First operand 3629 states and 5267 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:42:29,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:32,961 INFO L93 Difference]: Finished difference Result 3635 states and 5272 transitions. [2021-11-23 03:42:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:42:32,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 180 [2021-11-23 03:42:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:32,999 INFO L225 Difference]: With dead ends: 3635 [2021-11-23 03:42:33,000 INFO L226 Difference]: Without dead ends: 3610 [2021-11-23 03:42:33,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:42:33,009 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 1312 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:33,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3294 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 774 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-23 03:42:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2021-11-23 03:42:33,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 3610. [2021-11-23 03:42:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 2268 states have (on average 1.3271604938271604) internal successors, (3010), 2323 states have internal predecessors, (3010), 1093 states have call successors, (1093), 250 states have call predecessors, (1093), 248 states have return successors, (1138), 1080 states have call predecessors, (1138), 1090 states have call successors, (1138) [2021-11-23 03:42:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5241 transitions. [2021-11-23 03:42:33,268 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5241 transitions. Word has length 180 [2021-11-23 03:42:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:33,270 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 5241 transitions. [2021-11-23 03:42:33,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:42:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5241 transitions. [2021-11-23 03:42:33,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-11-23 03:42:33,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:33,302 INFO L514 BasicCegarLoop]: trace histogram [29, 22, 22, 22, 22, 22, 22, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:33,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:42:33,303 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1373224768, now seen corresponding path program 1 times [2021-11-23 03:42:33,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:33,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761166235] [2021-11-23 03:42:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:33,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked. [2021-11-23 03:42:33,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:33,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761166235] [2021-11-23 03:42:33,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761166235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:33,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:33,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:42:33,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820800681] [2021-11-23 03:42:33,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:33,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:42:33,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:33,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:42:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:33,808 INFO L87 Difference]: Start difference. First operand 3610 states and 5241 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-23 03:42:35,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:39,442 INFO L93 Difference]: Finished difference Result 10144 states and 14647 transitions. [2021-11-23 03:42:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:42:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 451 [2021-11-23 03:42:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:39,510 INFO L225 Difference]: With dead ends: 10144 [2021-11-23 03:42:39,510 INFO L226 Difference]: Without dead ends: 6559 [2021-11-23 03:42:39,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:39,537 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 1027 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:39,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 2433 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 618 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 03:42:39,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6559 states. [2021-11-23 03:42:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6559 to 6543. [2021-11-23 03:42:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6543 states, 4067 states have (on average 1.2999754118514877) internal successors, (5287), 4178 states have internal predecessors, (5287), 1991 states have call successors, (1991), 486 states have call predecessors, (1991), 484 states have return successors, (2038), 1962 states have call predecessors, (2038), 1988 states have call successors, (2038) [2021-11-23 03:42:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6543 states to 6543 states and 9316 transitions. [2021-11-23 03:42:39,981 INFO L78 Accepts]: Start accepts. Automaton has 6543 states and 9316 transitions. Word has length 451 [2021-11-23 03:42:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:39,984 INFO L470 AbstractCegarLoop]: Abstraction has 6543 states and 9316 transitions. [2021-11-23 03:42:39,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-23 03:42:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 6543 states and 9316 transitions. [2021-11-23 03:42:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-11-23 03:42:40,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:40,141 INFO L514 BasicCegarLoop]: trace histogram [30, 22, 22, 22, 22, 22, 22, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:40,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:42:40,141 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -249324061, now seen corresponding path program 1 times [2021-11-23 03:42:40,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:40,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126207685] [2021-11-23 03:42:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:40,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2375 trivial. 0 not checked. [2021-11-23 03:42:40,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:40,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126207685] [2021-11-23 03:42:40,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126207685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:40,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:40,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:42:40,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752098530] [2021-11-23 03:42:40,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:40,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:42:40,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:42:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:40,536 INFO L87 Difference]: Start difference. First operand 6543 states and 9316 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-23 03:42:42,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:45,737 INFO L93 Difference]: Finished difference Result 12776 states and 18131 transitions. [2021-11-23 03:42:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:42:45,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 454 [2021-11-23 03:42:45,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:45,789 INFO L225 Difference]: With dead ends: 12776 [2021-11-23 03:42:45,789 INFO L226 Difference]: Without dead ends: 6258 [2021-11-23 03:42:45,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:45,824 INFO L933 BasicCegarLoop]: 1733 mSDtfsCounter, 1223 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:45,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 2805 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 03:42:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-11-23 03:42:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 6247. [2021-11-23 03:42:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6247 states, 3947 states have (on average 1.2961743096022296) internal successors, (5116), 4051 states have internal predecessors, (5116), 1813 states have call successors, (1813), 488 states have call predecessors, (1813), 486 states have return successors, (1858), 1783 states have call predecessors, (1858), 1810 states have call successors, (1858) [2021-11-23 03:42:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6247 states to 6247 states and 8787 transitions. [2021-11-23 03:42:46,183 INFO L78 Accepts]: Start accepts. Automaton has 6247 states and 8787 transitions. Word has length 454 [2021-11-23 03:42:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:46,184 INFO L470 AbstractCegarLoop]: Abstraction has 6247 states and 8787 transitions. [2021-11-23 03:42:46,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-23 03:42:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 6247 states and 8787 transitions. [2021-11-23 03:42:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-11-23 03:42:46,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:46,218 INFO L514 BasicCegarLoop]: trace histogram [30, 22, 22, 22, 22, 22, 22, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:46,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:42:46,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:46,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:46,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1653609211, now seen corresponding path program 1 times [2021-11-23 03:42:46,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:46,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928723755] [2021-11-23 03:42:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:46,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2394 trivial. 0 not checked. [2021-11-23 03:42:46,553 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:46,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928723755] [2021-11-23 03:42:46,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928723755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:46,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:46,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:42:46,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453097002] [2021-11-23 03:42:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:46,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:42:46,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:46,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:42:46,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:46,556 INFO L87 Difference]: Start difference. First operand 6247 states and 8787 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-23 03:42:48,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:51,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:51,993 INFO L93 Difference]: Finished difference Result 14652 states and 20655 transitions. [2021-11-23 03:42:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:42:51,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 459 [2021-11-23 03:42:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:52,077 INFO L225 Difference]: With dead ends: 14652 [2021-11-23 03:42:52,078 INFO L226 Difference]: Without dead ends: 8793 [2021-11-23 03:42:52,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:42:52,108 INFO L933 BasicCegarLoop]: 2078 mSDtfsCounter, 1221 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:52,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 3146 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 781 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 03:42:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8793 states. [2021-11-23 03:42:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8793 to 8782. [2021-11-23 03:42:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8782 states, 5570 states have (on average 1.2971274685816876) internal successors, (7225), 5717 states have internal predecessors, (7225), 2521 states have call successors, (2521), 692 states have call predecessors, (2521), 690 states have return successors, (2589), 2478 states have call predecessors, (2589), 2518 states have call successors, (2589) [2021-11-23 03:42:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8782 states to 8782 states and 12335 transitions. [2021-11-23 03:42:52,660 INFO L78 Accepts]: Start accepts. Automaton has 8782 states and 12335 transitions. Word has length 459 [2021-11-23 03:42:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:52,660 INFO L470 AbstractCegarLoop]: Abstraction has 8782 states and 12335 transitions. [2021-11-23 03:42:52,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-23 03:42:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 8782 states and 12335 transitions. [2021-11-23 03:42:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-23 03:42:52,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:52,703 INFO L514 BasicCegarLoop]: trace histogram [32, 22, 22, 22, 22, 22, 22, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:52,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:42:52,704 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash -191830524, now seen corresponding path program 1 times [2021-11-23 03:42:52,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:52,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566140626] [2021-11-23 03:42:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:52,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2599 trivial. 0 not checked. [2021-11-23 03:42:53,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:53,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566140626] [2021-11-23 03:42:53,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566140626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:42:53,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:42:53,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:42:53,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245198388] [2021-11-23 03:42:53,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:42:53,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:42:53,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:42:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:42:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:42:53,508 INFO L87 Difference]: Start difference. First operand 8782 states and 12335 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-23 03:42:55,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:42:58,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:58,816 INFO L93 Difference]: Finished difference Result 17208 states and 24404 transitions. [2021-11-23 03:42:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:42:58,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 500 [2021-11-23 03:42:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:58,866 INFO L225 Difference]: With dead ends: 17208 [2021-11-23 03:42:58,866 INFO L226 Difference]: Without dead ends: 8814 [2021-11-23 03:42:58,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:42:58,912 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 9 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:58,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 3261 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 785 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:42:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8814 states. [2021-11-23 03:42:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8814 to 8806. [2021-11-23 03:42:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8806 states, 5590 states have (on average 1.2960644007155635) internal successors, (7245), 5741 states have internal predecessors, (7245), 2521 states have call successors, (2521), 692 states have call predecessors, (2521), 694 states have return successors, (2594), 2478 states have call predecessors, (2594), 2518 states have call successors, (2594) [2021-11-23 03:42:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 12360 transitions. [2021-11-23 03:42:59,371 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 12360 transitions. Word has length 500 [2021-11-23 03:42:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:59,372 INFO L470 AbstractCegarLoop]: Abstraction has 8806 states and 12360 transitions. [2021-11-23 03:42:59,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-23 03:42:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 12360 transitions. [2021-11-23 03:42:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-11-23 03:42:59,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:59,417 INFO L514 BasicCegarLoop]: trace histogram [32, 22, 22, 22, 22, 22, 22, 13, 13, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:42:59,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:42:59,418 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:59,419 INFO L85 PathProgramCache]: Analyzing trace with hash -2038849068, now seen corresponding path program 1 times [2021-11-23 03:42:59,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:59,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698395404] [2021-11-23 03:42:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:59,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 38 proven. 20 refuted. 0 times theorem prover too weak. 2635 trivial. 0 not checked. [2021-11-23 03:43:00,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:00,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698395404] [2021-11-23 03:43:00,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698395404] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:43:00,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337955127] [2021-11-23 03:43:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:00,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:43:00,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:00,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:43:00,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec18b9e-1564-4aec-a17b-cb725a358803/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:43:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:01,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 3863 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-23 03:43:01,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:43:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 1346 proven. 23 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2021-11-23 03:43:04,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:43:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 2633 trivial. 0 not checked. [2021-11-23 03:43:07,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337955127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:43:07,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [247547810] [2021-11-23 03:43:07,257 INFO L159 IcfgInterpreter]: Started Sifa with 234 locations of interest [2021-11-23 03:43:07,257 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:43:07,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:43:07,274 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:43:07,274 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:43:11,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 732 treesize of output 686 [2021-11-23 03:43:35,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1352 treesize of output 1151 [2021-11-23 03:43:56,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1352 treesize of output 1151 [2021-11-23 03:50:20,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:50:20,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:50:38,563 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 03:50:38,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2021-11-23 03:50:38,704 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-23 03:50:38,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 37 [2021-11-23 03:50:38,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 03:50:38,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 03:50:38,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 03:50:38,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 03:50:45,197 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 03:50:45,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 634 treesize of output 637 [2021-11-23 03:50:45,377 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-23 03:50:45,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 637 treesize of output 631 [2021-11-23 03:50:45,499 INFO L354 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2021-11-23 03:50:45,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 631 treesize of output 634 [2021-11-23 03:50:48,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:50:48,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:50:48,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-23 03:50:49,227 INFO L354 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2021-11-23 03:50:49,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 47 [2021-11-23 03:50:49,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:50:49,351 INFO L354 Elim1Store]: treesize reduction 17, result has 51.4 percent of original size [2021-11-23 03:50:49,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 55 [2021-11-23 03:50:49,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2021-11-23 03:50:49,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-23 03:50:49,633 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-23 03:50:49,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 03:50:49,733 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-23 03:50:49,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 03:50:50,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:50:50,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 657 treesize of output 655 [2021-11-23 03:50:50,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 652 treesize of output 646 [2021-11-23 03:50:50,265 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:50:50,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 646 treesize of output 644 [2021-11-23 03:50:50,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 641 treesize of output 637 [2021-11-23 03:50:50,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 637 treesize of output 633 [2021-11-23 03:50:53,506 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:50:53,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 657 treesize of output 655 [2021-11-23 03:50:53,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 652 treesize of output 648 [2021-11-23 03:50:53,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 648 treesize of output 644 [2021-11-23 03:50:53,672 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:50:53,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 644 treesize of output 642 [2021-11-23 03:50:53,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 639 treesize of output 633 [2021-11-23 03:54:30,278 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_final_state with input of size 139 for LOIs [2021-11-23 03:54:30,299 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_assert_linux_drivers_clk1__more_at_exit with input of size 142 for LOIs [2021-11-23 03:54:30,341 INFO L197 IcfgInterpreter]: Interpreting procedure ethoc_probe with input of size 185 for LOIs [2021-11-23 03:54:30,611 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-23 03:54:30,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 73 [2021-11-23 03:54:30,759 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-23 03:54:30,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 76 treesize of output 73 [2021-11-23 03:54:31,112 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-23 03:54:31,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 73 treesize of output 70 [2021-11-23 03:54:31,212 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-23 03:54:31,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 64 [2021-11-23 03:54:32,744 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 03:54:32,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1082 treesize of output 1070