./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/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_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:23:37,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:23:38,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:23:38,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:23:38,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:23:38,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:23:38,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:23:38,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:23:38,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:23:38,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:23:38,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:23:38,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:23:38,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:23:38,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:23:38,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:23:38,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:23:38,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:23:38,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:23:38,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:23:38,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:23:38,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:23:38,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:23:38,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:23:38,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:23:38,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:23:38,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:23:38,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:23:38,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:23:38,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:23:38,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:23:38,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:23:38,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:23:38,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:23:38,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:23:38,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:23:38,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:23:38,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:23:38,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:23:38,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:23:38,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:23:38,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:23:38,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:23:38,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:23:38,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:23:38,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:23:38,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:23:38,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:23:38,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:23:38,136 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:23:38,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:23:38,136 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:23:38,136 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:23:38,136 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:23:38,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:23:38,137 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:23:38,137 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:23:38,137 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:23:38,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:23:38,138 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:23:38,138 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:23:38,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:23:38,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:23:38,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:23:38,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:23:38,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:23:38,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:23:38,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:23:38,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:23:38,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:23:38,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:23:38,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:23:38,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:38,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:23:38,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:23:38,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:23:38,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:23:38,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:23:38,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:23:38,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:23:38,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:23:38,141 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_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 [2021-11-25 18:23:38,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:23:38,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:23:38,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:23:38,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:23:38,487 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:23:38,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-25 18:23:38,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/data/73640483b/a65b91f120744e13bfb5ec7f34dcbf96/FLAG1cdea314e [2021-11-25 18:23:39,496 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:23:39,497 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-25 18:23:39,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/data/73640483b/a65b91f120744e13bfb5ec7f34dcbf96/FLAG1cdea314e [2021-11-25 18:23:39,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/data/73640483b/a65b91f120744e13bfb5ec7f34dcbf96 [2021-11-25 18:23:39,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:23:39,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:23:39,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:39,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:23:39,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:23:39,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:39" (1/1) ... [2021-11-25 18:23:39,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2dcb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:39, skipping insertion in model container [2021-11-25 18:23:39,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:39" (1/1) ... [2021-11-25 18:23:39,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:23:40,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:23:42,421 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_769f698e-56e5-470e-91db-ff62693b940f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2021-11-25 18:23:42,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:42,475 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:23:42,850 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_769f698e-56e5-470e-91db-ff62693b940f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2021-11-25 18:23:42,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:43,074 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:23:43,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43 WrapperNode [2021-11-25 18:23:43,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:43,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:43,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:23:43,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:23:43,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,402 INFO L137 Inliner]: procedures = 347, calls = 1403, calls flagged for inlining = 224, calls inlined = 207, statements flattened = 3854 [2021-11-25 18:23:43,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:43,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:23:43,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:23:43,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:23:43,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:23:43,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:23:43,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:23:43,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:23:43,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (1/1) ... [2021-11-25 18:23:43,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:43,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:23:43,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:23:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-25 18:23:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-25 18:23:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:23:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:23:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:23:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:23:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:23:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:23:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-25 18:23:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-25 18:23:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_read_bd [2021-11-25 18:23:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_read_bd [2021-11-25 18:23:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:23:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:23:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:23:43,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:23:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 18:23:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_mdio_poll [2021-11-25 18:23:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_mdio_poll [2021-11-25 18:23:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-25 18:23:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-25 18:23:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 18:23:43,801 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 18:23:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:23:43,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:23:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_stop [2021-11-25 18:23:43,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_stop [2021-11-25 18:23:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:23:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_15 [2021-11-25 18:23:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_15 [2021-11-25 18:23:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_ack_irq [2021-11-25 18:23:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_ack_irq [2021-11-25 18:23:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:23:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:23:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:23:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:23:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:23:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 18:23:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 18:23:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:23:43,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:23:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-25 18:23:43,806 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-25 18:23:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:23:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_get_regs_len [2021-11-25 18:23:43,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_get_regs_len [2021-11-25 18:23:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_read [2021-11-25 18:23:43,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_read [2021-11-25 18:23:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-25 18:23:43,808 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-25 18:23:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:23:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_disable_rx_and_tx [2021-11-25 18:23:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_disable_rx_and_tx [2021-11-25 18:23:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_do_set_mac_address [2021-11-25 18:23:43,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_do_set_mac_address [2021-11-25 18:23:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_enable_rx_and_tx [2021-11-25 18:23:43,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_enable_rx_and_tx [2021-11-25 18:23:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_init_ring [2021-11-25 18:23:43,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_init_ring [2021-11-25 18:23:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure devm_ioremap_nocache [2021-11-25 18:23:43,812 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_ioremap_nocache [2021-11-25 18:23:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:23:43,812 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:23:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:23:43,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:23:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:23:43,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:23:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure __rounddown_pow_of_two [2021-11-25 18:23:43,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __rounddown_pow_of_two [2021-11-25 18:23:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:23:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:23:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:23:43,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:23:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:23:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:23:43,815 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:23:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:23:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:23:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:23:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:23:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-25 18:23:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-25 18:23:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_interrupt [2021-11-25 18:23:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_interrupt [2021-11-25 18:23:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:23:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:23:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:23:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:23:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:23:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:23:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:23:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:23:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:23:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_probe [2021-11-25 18:23:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_probe [2021-11-25 18:23:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:23:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure __devm_request_region [2021-11-25 18:23:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __devm_request_region [2021-11-25 18:23:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_resume [2021-11-25 18:23:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_resume [2021-11-25 18:23:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:23:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:23:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:23:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:23:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:23:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:23:43,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:23:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:23:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:23:43,824 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 18:23:43,824 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 18:23:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_write_bd [2021-11-25 18:23:43,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_write_bd [2021-11-25 18:23:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:23:43,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:23:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:23:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:23:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_write [2021-11-25 18:23:43,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_write [2021-11-25 18:23:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:23:43,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:23:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:23:43,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:23:43,838 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 18:23:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 18:23:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_enable_irq [2021-11-25 18:23:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_enable_irq [2021-11-25 18:23:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_open [2021-11-25 18:23:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_open [2021-11-25 18:23:43,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:23:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:23:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_disable_irq [2021-11-25 18:23:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_disable_irq [2021-11-25 18:23:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:23:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:23:43,840 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_remove [2021-11-25 18:23:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_remove [2021-11-25 18:23:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:23:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:23:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:23:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2021-11-25 18:23:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2021-11-25 18:23:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:23:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:23:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_tx_timeout [2021-11-25 18:23:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_tx_timeout [2021-11-25 18:23:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:23:43,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:23:44,528 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:23:44,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:23:44,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:24:02,743 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:24:02,865 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:24:03,600 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:24:03,600 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 18:24:03,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:03 BoogieIcfgContainer [2021-11-25 18:24:03,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:24:03,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:24:03,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:24:03,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:24:03,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:23:39" (1/3) ... [2021-11-25 18:24:03,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8b1f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:24:03, skipping insertion in model container [2021-11-25 18:24:03,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:43" (2/3) ... [2021-11-25 18:24:03,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8b1f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:24:03, skipping insertion in model container [2021-11-25 18:24:03,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:03" (3/3) ... [2021-11-25 18:24:03,613 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-25 18:24:03,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:24:03,618 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:24:03,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:24:03,685 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:24:03,685 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:24:03,731 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) [2021-11-25 18:24:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-25 18:24:03,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:03,747 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] [2021-11-25 18:24:03,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:03,753 INFO L85 PathProgramCache]: Analyzing trace with hash 372903008, now seen corresponding path program 1 times [2021-11-25 18:24:03,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:03,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874948666] [2021-11-25 18:24:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:03,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 18:24:04,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:04,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874948666] [2021-11-25 18:24:04,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874948666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:04,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:04,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:24:04,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953059235] [2021-11-25 18:24:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:04,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:24:04,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:04,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:24:04,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:04,684 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) [2021-11-25 18:24:06,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:24:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:09,712 INFO L93 Difference]: Finished difference Result 2775 states and 4009 transitions. [2021-11-25 18:24:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:24:09,715 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 [2021-11-25 18:24:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:09,760 INFO L225 Difference]: With dead ends: 2775 [2021-11-25 18:24:09,760 INFO L226 Difference]: Without dead ends: 1828 [2021-11-25 18:24:09,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:09,777 INFO L933 BasicCegarLoop]: 1395 mSDtfsCounter, 1304 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s 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 [2021-11-25 18:24:09,779 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] [2021-11-25 18:24:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-11-25 18:24:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1828. [2021-11-25 18:24:09,985 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) [2021-11-25 18:24:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2629 transitions. [2021-11-25 18:24:10,010 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2629 transitions. Word has length 137 [2021-11-25 18:24:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:10,011 INFO L470 AbstractCegarLoop]: Abstraction has 1828 states and 2629 transitions. [2021-11-25 18:24:10,011 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) [2021-11-25 18:24:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2629 transitions. [2021-11-25 18:24:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-25 18:24:10,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:10,026 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] [2021-11-25 18:24:10,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:24:10,027 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:10,028 INFO L85 PathProgramCache]: Analyzing trace with hash 269102246, now seen corresponding path program 1 times [2021-11-25 18:24:10,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:10,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974413263] [2021-11-25 18:24:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:10,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-25 18:24:10,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:10,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974413263] [2021-11-25 18:24:10,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974413263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:10,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:10,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:24:10,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423285101] [2021-11-25 18:24:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:10,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:24:10,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:24:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:24:10,560 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) [2021-11-25 18:24:12,611 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 [] [2021-11-25 18:24:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:17,067 INFO L93 Difference]: Finished difference Result 3637 states and 5274 transitions. [2021-11-25 18:24:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:24:17,068 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 [2021-11-25 18:24:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:17,115 INFO L225 Difference]: With dead ends: 3637 [2021-11-25 18:24:17,117 INFO L226 Difference]: Without dead ends: 3633 [2021-11-25 18:24:17,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:24:17,123 INFO L933 BasicCegarLoop]: 1374 mSDtfsCounter, 1318 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:17,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1319 Valid, 5208 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1033 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-25 18:24:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2021-11-25 18:24:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3629. [2021-11-25 18:24:17,338 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) [2021-11-25 18:24:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 5267 transitions. [2021-11-25 18:24:17,372 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 5267 transitions. Word has length 175 [2021-11-25 18:24:17,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:17,374 INFO L470 AbstractCegarLoop]: Abstraction has 3629 states and 5267 transitions. [2021-11-25 18:24:17,374 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) [2021-11-25 18:24:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 5267 transitions. [2021-11-25 18:24:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-25 18:24:17,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:17,386 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] [2021-11-25 18:24:17,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:24:17,386 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:17,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash 646385888, now seen corresponding path program 1 times [2021-11-25 18:24:17,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:17,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249134271] [2021-11-25 18:24:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:17,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-25 18:24:18,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:18,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249134271] [2021-11-25 18:24:18,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249134271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:18,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:18,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:24:18,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494714642] [2021-11-25 18:24:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:18,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:24:18,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:24:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:24:18,039 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) [2021-11-25 18:24:20,084 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 [] [2021-11-25 18:24:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:23,398 INFO L93 Difference]: Finished difference Result 3635 states and 5272 transitions. [2021-11-25 18:24:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:24:23,399 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 [2021-11-25 18:24:23,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:23,433 INFO L225 Difference]: With dead ends: 3635 [2021-11-25 18:24:23,434 INFO L226 Difference]: Without dead ends: 3610 [2021-11-25 18:24:23,437 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 [2021-11-25 18:24:23,442 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 1312 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s 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, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:23,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3294 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 774 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 18:24:23,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2021-11-25 18:24:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 3610. [2021-11-25 18:24:23,676 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) [2021-11-25 18:24:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5241 transitions. [2021-11-25 18:24:23,713 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5241 transitions. Word has length 180 [2021-11-25 18:24:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:23,715 INFO L470 AbstractCegarLoop]: Abstraction has 3610 states and 5241 transitions. [2021-11-25 18:24:23,715 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) [2021-11-25 18:24:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5241 transitions. [2021-11-25 18:24:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-11-25 18:24:23,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:23,743 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] [2021-11-25 18:24:23,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:24:23,743 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1373224768, now seen corresponding path program 1 times [2021-11-25 18:24:23,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:23,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256888222] [2021-11-25 18:24:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:23,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked. [2021-11-25 18:24:24,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:24,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256888222] [2021-11-25 18:24:24,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256888222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:24,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:24,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:24:24,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537460630] [2021-11-25 18:24:24,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:24,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:24:24,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:24:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:24,303 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) [2021-11-25 18:24:26,340 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 [] [2021-11-25 18:24:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:29,310 INFO L93 Difference]: Finished difference Result 10144 states and 14647 transitions. [2021-11-25 18:24:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:24:29,311 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 [2021-11-25 18:24:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:29,370 INFO L225 Difference]: With dead ends: 10144 [2021-11-25 18:24:29,371 INFO L226 Difference]: Without dead ends: 6559 [2021-11-25 18:24:29,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:29,396 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 1027 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s 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, 4.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:29,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 2433 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 618 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-25 18:24:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6559 states. [2021-11-25 18:24:29,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6559 to 6543. [2021-11-25 18:24:29,875 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) [2021-11-25 18:24:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6543 states to 6543 states and 9316 transitions. [2021-11-25 18:24:29,917 INFO L78 Accepts]: Start accepts. Automaton has 6543 states and 9316 transitions. Word has length 451 [2021-11-25 18:24:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:29,919 INFO L470 AbstractCegarLoop]: Abstraction has 6543 states and 9316 transitions. [2021-11-25 18:24:29,920 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) [2021-11-25 18:24:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6543 states and 9316 transitions. [2021-11-25 18:24:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-11-25 18:24:29,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:29,955 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] [2021-11-25 18:24:29,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:24:29,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:29,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:29,957 INFO L85 PathProgramCache]: Analyzing trace with hash -249324061, now seen corresponding path program 1 times [2021-11-25 18:24:29,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:29,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991801530] [2021-11-25 18:24:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:29,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2375 trivial. 0 not checked. [2021-11-25 18:24:30,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991801530] [2021-11-25 18:24:30,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991801530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:30,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:30,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:24:30,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941473804] [2021-11-25 18:24:30,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:30,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:24:30,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:30,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:24:30,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:30,451 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) [2021-11-25 18:24:32,490 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 [] [2021-11-25 18:24:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:35,563 INFO L93 Difference]: Finished difference Result 12776 states and 18131 transitions. [2021-11-25 18:24:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:24:35,564 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 [2021-11-25 18:24:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:35,616 INFO L225 Difference]: With dead ends: 12776 [2021-11-25 18:24:35,616 INFO L226 Difference]: Without dead ends: 6258 [2021-11-25 18:24:35,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:35,649 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, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:35,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 2805 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 18:24:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-11-25 18:24:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 6247. [2021-11-25 18:24:35,951 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) [2021-11-25 18:24:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6247 states to 6247 states and 8787 transitions. [2021-11-25 18:24:35,981 INFO L78 Accepts]: Start accepts. Automaton has 6247 states and 8787 transitions. Word has length 454 [2021-11-25 18:24:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:35,982 INFO L470 AbstractCegarLoop]: Abstraction has 6247 states and 8787 transitions. [2021-11-25 18:24:35,982 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) [2021-11-25 18:24:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6247 states and 8787 transitions. [2021-11-25 18:24:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-11-25 18:24:36,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:36,015 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] [2021-11-25 18:24:36,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:24:36,015 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1653609211, now seen corresponding path program 1 times [2021-11-25 18:24:36,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:36,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715359574] [2021-11-25 18:24:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:36,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2394 trivial. 0 not checked. [2021-11-25 18:24:36,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:36,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715359574] [2021-11-25 18:24:36,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715359574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:36,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:36,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:24:36,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222844960] [2021-11-25 18:24:36,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:36,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:24:36,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:36,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:24:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:36,509 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) [2021-11-25 18:24:38,551 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 [] [2021-11-25 18:24:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:41,884 INFO L93 Difference]: Finished difference Result 14652 states and 20655 transitions. [2021-11-25 18:24:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:24:41,885 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 [2021-11-25 18:24:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:41,945 INFO L225 Difference]: With dead ends: 14652 [2021-11-25 18:24:41,945 INFO L226 Difference]: Without dead ends: 8793 [2021-11-25 18:24:41,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:24:41,976 INFO L933 BasicCegarLoop]: 2078 mSDtfsCounter, 1221 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s 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 [2021-11-25 18:24:41,977 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] [2021-11-25 18:24:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8793 states. [2021-11-25 18:24:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8793 to 8782. [2021-11-25 18:24:42,358 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) [2021-11-25 18:24:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8782 states to 8782 states and 12335 transitions. [2021-11-25 18:24:42,397 INFO L78 Accepts]: Start accepts. Automaton has 8782 states and 12335 transitions. Word has length 459 [2021-11-25 18:24:42,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:42,398 INFO L470 AbstractCegarLoop]: Abstraction has 8782 states and 12335 transitions. [2021-11-25 18:24:42,398 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) [2021-11-25 18:24:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 8782 states and 12335 transitions. [2021-11-25 18:24:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-25 18:24:42,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:42,437 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] [2021-11-25 18:24:42,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:24:42,438 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash -191830524, now seen corresponding path program 1 times [2021-11-25 18:24:42,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:42,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026676177] [2021-11-25 18:24:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:42,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2599 trivial. 0 not checked. [2021-11-25 18:24:43,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:43,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026676177] [2021-11-25 18:24:43,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026676177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:43,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:24:43,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:24:43,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133465865] [2021-11-25 18:24:43,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:43,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:24:43,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:24:43,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:24:43,426 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) [2021-11-25 18:24:45,468 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 [] [2021-11-25 18:24:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:49,031 INFO L93 Difference]: Finished difference Result 17208 states and 24404 transitions. [2021-11-25 18:24:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:24:49,032 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 [2021-11-25 18:24:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:49,083 INFO L225 Difference]: With dead ends: 17208 [2021-11-25 18:24:49,083 INFO L226 Difference]: Without dead ends: 8814 [2021-11-25 18:24:49,132 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 [2021-11-25 18:24:49,133 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, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:49,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 3261 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 785 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 18:24:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8814 states. [2021-11-25 18:24:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8814 to 8806. [2021-11-25 18:24:49,573 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) [2021-11-25 18:24:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 12360 transitions. [2021-11-25 18:24:49,613 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 12360 transitions. Word has length 500 [2021-11-25 18:24:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:49,614 INFO L470 AbstractCegarLoop]: Abstraction has 8806 states and 12360 transitions. [2021-11-25 18:24:49,614 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) [2021-11-25 18:24:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 12360 transitions. [2021-11-25 18:24:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-11-25 18:24:49,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:49,644 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] [2021-11-25 18:24:49,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:24:49,645 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2038849068, now seen corresponding path program 1 times [2021-11-25 18:24:49,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:49,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128625813] [2021-11-25 18:24:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:49,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 38 proven. 20 refuted. 0 times theorem prover too weak. 2635 trivial. 0 not checked. [2021-11-25 18:24:50,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128625813] [2021-11-25 18:24:50,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128625813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:24:50,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182812217] [2021-11-25 18:24:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:50,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:50,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:24:50,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:24:50,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_769f698e-56e5-470e-91db-ff62693b940f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:24:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:52,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 4802 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 18:24:52,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 1346 proven. 23 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2021-11-25 18:24:55,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 2633 trivial. 0 not checked. [2021-11-25 18:24:57,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182812217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:57,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735890387] [2021-11-25 18:24:57,911 INFO L159 IcfgInterpreter]: Started Sifa with 234 locations of interest [2021-11-25 18:24:57,911 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:24:57,917 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:24:57,922 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:24:57,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:25:01,468 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 [2021-11-25 18:28:05,300 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 [2021-11-25 18:30:45,340 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