./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0705c7c1097399903dd015d79fa2944ad89b2d381aed5d9e2539b97c330aa424 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:31:39,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:31:39,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:31:39,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:31:39,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:31:39,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:31:39,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:31:39,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:31:39,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:31:39,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:31:39,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:31:39,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:31:39,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:31:39,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:31:39,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:31:39,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:31:39,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:31:39,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:31:39,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:31:39,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:31:39,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:31:39,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:31:39,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:31:39,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:31:39,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:31:39,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:31:39,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:31:39,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:31:39,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:31:39,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:31:39,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:31:39,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:31:39,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:31:39,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:31:39,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:31:39,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:31:39,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:31:39,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:31:39,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:31:39,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:31:39,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:31:39,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:31:39,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:31:39,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:31:39,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:31:39,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:31:39,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:31:39,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:31:39,673 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:31:39,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:31:39,673 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:31:39,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:31:39,675 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:31:39,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:31:39,675 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:31:39,675 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:31:39,675 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:31:39,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:31:39,676 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:31:39,676 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:31:39,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:31:39,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:31:39,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:31:39,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:31:39,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:31:39,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:31:39,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:31:39,679 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:31:39,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:31:39,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:31:39,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:31:39,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:31:39,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:31:39,681 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:31:39,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:31:39,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:31:39,681 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:31:39,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:31:39,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:31:39,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:31:39,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0705c7c1097399903dd015d79fa2944ad89b2d381aed5d9e2539b97c330aa424 [2022-11-22 01:31:39,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:31:40,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:31:40,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:31:40,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:31:40,046 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:31:40,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2022-11-22 01:31:43,184 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:31:43,916 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:31:43,918 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2022-11-22 01:31:43,969 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/data/f819403aa/febbe17662324922b509332551cb394d/FLAGf34462368 [2022-11-22 01:31:43,990 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/data/f819403aa/febbe17662324922b509332551cb394d [2022-11-22 01:31:43,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:31:43,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:31:44,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:31:44,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:31:44,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:31:44,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:31:43" (1/1) ... [2022-11-22 01:31:44,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3b451a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:44, skipping insertion in model container [2022-11-22 01:31:44,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:31:43" (1/1) ... [2022-11-22 01:31:44,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:31:44,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:31:47,336 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i[351362,351375] [2022-11-22 01:31:47,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:31:47,415 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:31:47,888 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i[351362,351375] [2022-11-22 01:31:47,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:31:48,196 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:31:48,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48 WrapperNode [2022-11-22 01:31:48,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:31:48,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:31:48,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:31:48,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:31:48,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,507 INFO L138 Inliner]: procedures = 415, calls = 1897, calls flagged for inlining = 249, calls inlined = 236, statements flattened = 5800 [2022-11-22 01:31:48,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:31:48,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:31:48,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:31:48,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:31:48,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:31:48,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:31:48,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:31:48,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:31:48,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (1/1) ... [2022-11-22 01:31:48,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:31:48,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:31:48,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:31:48,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:31:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:31:48,940 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:31:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:31:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:31:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 01:31:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 01:31:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:31:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:31:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mii_read [2022-11-22 01:31:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mii_read [2022-11-22 01:31:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_resume [2022-11-22 01:31:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_resume [2022-11-22 01:31:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 01:31:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 01:31:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_drv_probe [2022-11-22 01:31:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_drv_probe [2022-11-22 01:31:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure no_printk [2022-11-22 01:31:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure no_printk [2022-11-22 01:31:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:31:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:31:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:31:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:31:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 01:31:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 01:31:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 01:31:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 01:31:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:31:48,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:31:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 01:31:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 01:31:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_set_multicast_list [2022-11-22 01:31:48,947 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_set_multicast_list [2022-11-22 01:31:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_set_hw_mac_address [2022-11-22 01:31:48,948 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_set_hw_mac_address [2022-11-22 01:31:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2022-11-22 01:31:48,948 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2022-11-22 01:31:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-22 01:31:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-22 01:31:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:31:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 01:31:48,949 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 01:31:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_drv_remove [2022-11-22 01:31:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_drv_remove [2022-11-22 01:31:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_multicast_update [2022-11-22 01:31:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_multicast_update [2022-11-22 01:31:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:31:48,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:31:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:31:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-22 01:31:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-22 01:31:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 01:31:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 01:31:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_writefifo [2022-11-22 01:31:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_writefifo [2022-11-22 01:31:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:31:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:31:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:31:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_irqhandler [2022-11-22 01:31:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_irqhandler [2022-11-22 01:31:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:31:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:31:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:31:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-22 01:31:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-22 01:31:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:31:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:31:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_disable_resources [2022-11-22 01:31:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_disable_resources [2022-11-22 01:31:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_get_rxstatus [2022-11-22 01:31:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_get_rxstatus [2022-11-22 01:31:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_read [2022-11-22 01:31:48,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_read [2022-11-22 01:31:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_getregslen [2022-11-22 01:31:48,957 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_getregslen [2022-11-22 01:31:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:31:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:31:48,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:31:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:31:48,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:31:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 01:31:48,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 01:31:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 01:31:48,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 01:31:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:31:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 01:31:48,961 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 01:31:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:31:48,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:31:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:31:48,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:31:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:31:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:31:48,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:31:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-22 01:31:48,963 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-22 01:31:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:31:48,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:31:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mii_write [2022-11-22 01:31:48,964 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mii_write [2022-11-22 01:31:48,965 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_complete [2022-11-22 01:31:48,965 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_complete [2022-11-22 01:31:48,965 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-22 01:31:48,965 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-22 01:31:48,965 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:31:48,965 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:31:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:31:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:31:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32_rep [2022-11-22 01:31:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32_rep [2022-11-22 01:31:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-22 01:31:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-22 01:31:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource_byname [2022-11-22 01:31:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource_byname [2022-11-22 01:31:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 01:31:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 01:31:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:31:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:31:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2022-11-22 01:31:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2022-11-22 01:31:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:31:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:31:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 01:31:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 01:31:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-22 01:31:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-22 01:31:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_get_txstatus [2022-11-22 01:31:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_get_txstatus [2022-11-22 01:31:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 01:31:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 01:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-11-22 01:31:48,984 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-11-22 01:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:31:48,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:31:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_readfifo [2022-11-22 01:31:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_readfifo [2022-11-22 01:31:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_open [2022-11-22 01:31:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_open [2022-11-22 01:31:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2022-11-22 01:31:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2022-11-22 01:31:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_get_eeprom_len [2022-11-22 01:31:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_get_eeprom_len [2022-11-22 01:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_readfifo_shift [2022-11-22 01:31:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_readfifo_shift [2022-11-22 01:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_suspend [2022-11-22 01:31:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_suspend [2022-11-22 01:31:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_read_mac_address [2022-11-22 01:31:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_read_mac_address [2022-11-22 01:31:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_write [2022-11-22 01:31:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_write [2022-11-22 01:31:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2022-11-22 01:31:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2022-11-22 01:31:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:31:48,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:31:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:31:48,989 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:31:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-22 01:31:48,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-22 01:31:48,989 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_write [2022-11-22 01:31:48,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_write [2022-11-22 01:31:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:31:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:31:48,990 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:31:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:31:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_reg_write [2022-11-22 01:31:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_reg_write [2022-11-22 01:31:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_nwayreset [2022-11-22 01:31:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_nwayreset [2022-11-22 01:31:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_free_resources [2022-11-22 01:31:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_free_resources [2022-11-22 01:31:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_disable_irq_chip [2022-11-22 01:31:48,992 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_disable_irq_chip [2022-11-22 01:31:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:31:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 01:31:48,992 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 01:31:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_eeprom_send_cmd [2022-11-22 01:31:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_eeprom_send_cmd [2022-11-22 01:31:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:31:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:31:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_phy_adjust_link [2022-11-22 01:31:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_phy_adjust_link [2022-11-22 01:31:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_reg_read [2022-11-22 01:31:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_reg_read [2022-11-22 01:31:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:31:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:31:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 01:31:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 01:31:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_update_txcounters [2022-11-22 01:31:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_update_txcounters [2022-11-22 01:31:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_read_shift [2022-11-22 01:31:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_read_shift [2022-11-22 01:31:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:31:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:31:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_write_shift [2022-11-22 01:31:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_write_shift [2022-11-22 01:31:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:31:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:31:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:31:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:31:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-22 01:31:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-22 01:31:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-22 01:31:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-22 01:31:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_phy_enable_external [2022-11-22 01:31:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_phy_enable_external [2022-11-22 01:31:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:31:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_read [2022-11-22 01:31:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_read [2022-11-22 01:31:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:31:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:31:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-22 01:31:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-22 01:31:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 01:31:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 01:31:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc911x_cleanup_module_14_2 [2022-11-22 01:31:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc911x_cleanup_module_14_2 [2022-11-22 01:31:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_soft_reset [2022-11-22 01:31:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_soft_reset [2022-11-22 01:31:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_eeprom_enable_access [2022-11-22 01:31:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_eeprom_enable_access [2022-11-22 01:31:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2022-11-22 01:31:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2022-11-22 01:31:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure spin_is_locked [2022-11-22 01:31:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_is_locked [2022-11-22 01:31:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_stop [2022-11-22 01:31:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_stop [2022-11-22 01:31:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:31:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:31:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_writefifo_shift [2022-11-22 01:31:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_writefifo_shift [2022-11-22 01:31:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-22 01:31:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-22 01:31:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 01:31:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 01:31:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:31:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-22 01:31:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-22 01:31:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:31:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:31:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 01:31:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 01:31:50,113 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:31:50,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:31:50,603 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:31:54,723 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:31:54,895 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:31:56,732 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:31:56,732 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:31:56,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:31:56 BoogieIcfgContainer [2022-11-22 01:31:56,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:31:56,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:31:56,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:31:56,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:31:56,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:31:43" (1/3) ... [2022-11-22 01:31:56,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f2a783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:31:56, skipping insertion in model container [2022-11-22 01:31:56,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:31:48" (2/3) ... [2022-11-22 01:31:56,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f2a783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:31:56, skipping insertion in model container [2022-11-22 01:31:56,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:31:56" (3/3) ... [2022-11-22 01:31:56,751 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-smsc-smsc911x.cil.i [2022-11-22 01:31:56,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:31:56,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:31:56,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:31:56,892 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@48fdf5ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:31:56,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:31:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 2079 states, 1234 states have (on average 1.3095623987034035) internal successors, (1616), 1268 states have internal predecessors, (1616), 734 states have call successors, (734), 113 states have call predecessors, (734), 112 states have return successors, (725), 716 states have call predecessors, (725), 725 states have call successors, (725) [2022-11-22 01:31:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-22 01:31:56,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:31:56,929 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:31:56,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:31:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:31:56,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1515848531, now seen corresponding path program 1 times [2022-11-22 01:31:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:31:56,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592819647] [2022-11-22 01:31:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:31:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:31:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:31:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-22 01:31:57,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:31:57,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592819647] [2022-11-22 01:31:57,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592819647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:31:57,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:31:57,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:31:57,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228444979] [2022-11-22 01:31:57,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:31:57,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:31:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:31:58,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:31:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:31:58,047 INFO L87 Difference]: Start difference. First operand has 2079 states, 1234 states have (on average 1.3095623987034035) internal successors, (1616), 1268 states have internal predecessors, (1616), 734 states have call successors, (734), 113 states have call predecessors, (734), 112 states have return successors, (725), 716 states have call predecessors, (725), 725 states have call successors, (725) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 01:32:00,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:00,267 INFO L93 Difference]: Finished difference Result 6074 states and 9452 transitions. [2022-11-22 01:32:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:32:00,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 211 [2022-11-22 01:32:00,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:00,331 INFO L225 Difference]: With dead ends: 6074 [2022-11-22 01:32:00,331 INFO L226 Difference]: Without dead ends: 4021 [2022-11-22 01:32:00,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:00,363 INFO L413 NwaCegarLoop]: 3370 mSDtfsCounter, 2927 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 6018 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:00,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2927 Valid, 6018 Invalid, 755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 01:32:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2022-11-22 01:32:00,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 4021. [2022-11-22 01:32:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4021 states, 2395 states have (on average 1.3002087682672234) internal successors, (3114), 2464 states have internal predecessors, (3114), 1405 states have call successors, (1405), 221 states have call predecessors, (1405), 220 states have return successors, (1401), 1383 states have call predecessors, (1401), 1401 states have call successors, (1401) [2022-11-22 01:32:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 5920 transitions. [2022-11-22 01:32:00,786 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 5920 transitions. Word has length 211 [2022-11-22 01:32:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:00,788 INFO L495 AbstractCegarLoop]: Abstraction has 4021 states and 5920 transitions. [2022-11-22 01:32:00,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 01:32:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 5920 transitions. [2022-11-22 01:32:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-22 01:32:00,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:00,805 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:32:00,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:32:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 467925056, now seen corresponding path program 1 times [2022-11-22 01:32:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:00,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983002828] [2022-11-22 01:32:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:00,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2022-11-22 01:32:01,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:01,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983002828] [2022-11-22 01:32:01,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983002828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:01,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:01,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:32:01,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669020167] [2022-11-22 01:32:01,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:32:01,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:32:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:32:01,766 INFO L87 Difference]: Start difference. First operand 4021 states and 5920 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 01:32:03,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:03,586 INFO L93 Difference]: Finished difference Result 4027 states and 5925 transitions. [2022-11-22 01:32:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:32:03,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 253 [2022-11-22 01:32:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:03,629 INFO L225 Difference]: With dead ends: 4027 [2022-11-22 01:32:03,629 INFO L226 Difference]: Without dead ends: 4023 [2022-11-22 01:32:03,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:32:03,639 INFO L413 NwaCegarLoop]: 2655 mSDtfsCounter, 2966 mSDsluCounter, 5307 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 7962 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:03,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2967 Valid, 7962 Invalid, 1105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 01:32:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2022-11-22 01:32:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 4023. [2022-11-22 01:32:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4023 states, 2397 states have (on average 1.2995410930329578) internal successors, (3115), 2465 states have internal predecessors, (3115), 1405 states have call successors, (1405), 222 states have call predecessors, (1405), 220 states have return successors, (1401), 1383 states have call predecessors, (1401), 1401 states have call successors, (1401) [2022-11-22 01:32:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 5921 transitions. [2022-11-22 01:32:04,063 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 5921 transitions. Word has length 253 [2022-11-22 01:32:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:04,065 INFO L495 AbstractCegarLoop]: Abstraction has 4023 states and 5921 transitions. [2022-11-22 01:32:04,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-22 01:32:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 5921 transitions. [2022-11-22 01:32:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-22 01:32:04,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:04,080 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 5, 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] [2022-11-22 01:32:04,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:32:04,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:32:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 243344149, now seen corresponding path program 1 times [2022-11-22 01:32:04,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:04,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576079412] [2022-11-22 01:32:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2022-11-22 01:32:04,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:04,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576079412] [2022-11-22 01:32:04,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576079412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:04,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:04,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:32:04,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268104740] [2022-11-22 01:32:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:04,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:32:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:32:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:32:04,884 INFO L87 Difference]: Start difference. First operand 4023 states and 5921 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 01:32:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:07,620 INFO L93 Difference]: Finished difference Result 8007 states and 11828 transitions. [2022-11-22 01:32:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:32:07,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 261 [2022-11-22 01:32:07,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:07,713 INFO L225 Difference]: With dead ends: 8007 [2022-11-22 01:32:07,713 INFO L226 Difference]: Without dead ends: 7985 [2022-11-22 01:32:07,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:32:07,730 INFO L413 NwaCegarLoop]: 3373 mSDtfsCounter, 2955 mSDsluCounter, 9363 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2955 SdHoareTripleChecker+Valid, 12736 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:07,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2955 Valid, 12736 Invalid, 1479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 01:32:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7985 states. [2022-11-22 01:32:08,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7985 to 7983. [2022-11-22 01:32:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7983 states, 4764 states have (on average 1.3007976490344249) internal successors, (6197), 4900 states have internal predecessors, (6197), 2780 states have call successors, (2780), 440 states have call predecessors, (2780), 438 states have return successors, (2820), 2738 states have call predecessors, (2820), 2776 states have call successors, (2820) [2022-11-22 01:32:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7983 states to 7983 states and 11797 transitions. [2022-11-22 01:32:08,645 INFO L78 Accepts]: Start accepts. Automaton has 7983 states and 11797 transitions. Word has length 261 [2022-11-22 01:32:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:08,649 INFO L495 AbstractCegarLoop]: Abstraction has 7983 states and 11797 transitions. [2022-11-22 01:32:08,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 01:32:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 7983 states and 11797 transitions. [2022-11-22 01:32:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2022-11-22 01:32:08,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:08,707 INFO L195 NwaCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:08,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:32:08,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:32:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2120840979, now seen corresponding path program 1 times [2022-11-22 01:32:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:08,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57782086] [2022-11-22 01:32:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2910 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2902 trivial. 0 not checked. [2022-11-22 01:32:09,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:09,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57782086] [2022-11-22 01:32:09,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57782086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:09,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:09,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:32:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649801849] [2022-11-22 01:32:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:09,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:32:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:32:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:09,373 INFO L87 Difference]: Start difference. First operand 7983 states and 11797 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-22 01:32:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:11,999 INFO L93 Difference]: Finished difference Result 23163 states and 34177 transitions. [2022-11-22 01:32:11,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:32:12,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 496 [2022-11-22 01:32:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:12,155 INFO L225 Difference]: With dead ends: 23163 [2022-11-22 01:32:12,155 INFO L226 Difference]: Without dead ends: 15219 [2022-11-22 01:32:12,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:12,226 INFO L413 NwaCegarLoop]: 3878 mSDtfsCounter, 2655 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 6481 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:12,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2655 Valid, 6481 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:32:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15219 states. [2022-11-22 01:32:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15219 to 15198. [2022-11-22 01:32:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15198 states, 9018 states have (on average 1.2880904856952762) internal successors, (11616), 9287 states have internal predecessors, (11616), 5324 states have call successors, (5324), 857 states have call predecessors, (5324), 855 states have return successors, (5366), 5241 states have call predecessors, (5366), 5320 states have call successors, (5366) [2022-11-22 01:32:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15198 states to 15198 states and 22306 transitions. [2022-11-22 01:32:13,608 INFO L78 Accepts]: Start accepts. Automaton has 15198 states and 22306 transitions. Word has length 496 [2022-11-22 01:32:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:13,609 INFO L495 AbstractCegarLoop]: Abstraction has 15198 states and 22306 transitions. [2022-11-22 01:32:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-22 01:32:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 15198 states and 22306 transitions. [2022-11-22 01:32:13,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-22 01:32:13,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:13,703 INFO L195 NwaCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:13,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:32:13,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:32:13,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1780718698, now seen corresponding path program 1 times [2022-11-22 01:32:13,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:13,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199567977] [2022-11-22 01:32:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3028 trivial. 0 not checked. [2022-11-22 01:32:14,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:14,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199567977] [2022-11-22 01:32:14,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199567977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:14,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:14,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:32:14,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164767508] [2022-11-22 01:32:14,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:14,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:32:14,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:14,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:32:14,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:14,335 INFO L87 Difference]: Start difference. First operand 15198 states and 22306 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2022-11-22 01:32:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:17,687 INFO L93 Difference]: Finished difference Result 29811 states and 43660 transitions. [2022-11-22 01:32:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:32:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 507 [2022-11-22 01:32:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:17,827 INFO L225 Difference]: With dead ends: 29811 [2022-11-22 01:32:17,828 INFO L226 Difference]: Without dead ends: 14652 [2022-11-22 01:32:17,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:17,934 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 2880 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2880 SdHoareTripleChecker+Valid, 6767 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:17,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2880 Valid, 6767 Invalid, 907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 01:32:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2022-11-22 01:32:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 14635. [2022-11-22 01:32:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14635 states, 8755 states have (on average 1.287835522558538) internal successors, (11275), 9026 states have internal predecessors, (11275), 5013 states have call successors, (5013), 870 states have call predecessors, (5013), 866 states have return successors, (5053), 4922 states have call predecessors, (5053), 5009 states have call successors, (5053) [2022-11-22 01:32:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14635 states to 14635 states and 21341 transitions. [2022-11-22 01:32:19,130 INFO L78 Accepts]: Start accepts. Automaton has 14635 states and 21341 transitions. Word has length 507 [2022-11-22 01:32:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:19,131 INFO L495 AbstractCegarLoop]: Abstraction has 14635 states and 21341 transitions. [2022-11-22 01:32:19,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2022-11-22 01:32:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 14635 states and 21341 transitions. [2022-11-22 01:32:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-11-22 01:32:19,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:19,210 INFO L195 NwaCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 01:32:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:32:19,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:32:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:19,211 INFO L85 PathProgramCache]: Analyzing trace with hash -873299004, now seen corresponding path program 1 times [2022-11-22 01:32:19,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:19,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687835320] [2022-11-22 01:32:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:19,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3041 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3024 trivial. 0 not checked. [2022-11-22 01:32:19,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:19,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687835320] [2022-11-22 01:32:19,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687835320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:19,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:32:19,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:32:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538537398] [2022-11-22 01:32:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:19,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:32:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:32:19,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:19,893 INFO L87 Difference]: Start difference. First operand 14635 states and 21341 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2022-11-22 01:32:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:23,145 INFO L93 Difference]: Finished difference Result 34217 states and 49948 transitions. [2022-11-22 01:32:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:32:23,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 509 [2022-11-22 01:32:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:23,282 INFO L225 Difference]: With dead ends: 34217 [2022-11-22 01:32:23,283 INFO L226 Difference]: Without dead ends: 20593 [2022-11-22 01:32:23,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:32:23,348 INFO L413 NwaCegarLoop]: 5181 mSDtfsCounter, 2872 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 7813 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:23,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2872 Valid, 7813 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 01:32:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20593 states. [2022-11-22 01:32:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20593 to 20576. [2022-11-22 01:32:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20576 states, 12336 states have (on average 1.2887483787289236) internal successors, (15898), 12722 states have internal predecessors, (15898), 7013 states have call successors, (7013), 1232 states have call predecessors, (7013), 1226 states have return successors, (7074), 6881 states have call predecessors, (7074), 7009 states have call successors, (7074) [2022-11-22 01:32:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20576 states to 20576 states and 29985 transitions. [2022-11-22 01:32:25,065 INFO L78 Accepts]: Start accepts. Automaton has 20576 states and 29985 transitions. Word has length 509 [2022-11-22 01:32:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:25,068 INFO L495 AbstractCegarLoop]: Abstraction has 20576 states and 29985 transitions. [2022-11-22 01:32:25,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2022-11-22 01:32:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand 20576 states and 29985 transitions. [2022-11-22 01:32:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-11-22 01:32:25,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:25,164 INFO L195 NwaCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 12, 12, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:25,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:32:25,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:32:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash 774823067, now seen corresponding path program 1 times [2022-11-22 01:32:25,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:25,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416745469] [2022-11-22 01:32:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:25,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 51 proven. 10 refuted. 0 times theorem prover too weak. 3230 trivial. 0 not checked. [2022-11-22 01:32:27,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416745469] [2022-11-22 01:32:27,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416745469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:32:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124789371] [2022-11-22 01:32:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:27,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:32:27,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:32:27,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:32:27,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:32:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:29,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 4428 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:32:29,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:32:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 1402 proven. 0 refuted. 0 times theorem prover too weak. 1889 trivial. 0 not checked. [2022-11-22 01:32:31,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:32:31,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124789371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:32:31,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:32:31,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-22 01:32:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776986549] [2022-11-22 01:32:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:31,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:32:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:31,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:32:31,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:32:31,092 INFO L87 Difference]: Start difference. First operand 20576 states and 29985 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2022-11-22 01:32:34,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:32:34,989 INFO L93 Difference]: Finished difference Result 59281 states and 86500 transitions. [2022-11-22 01:32:34,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:32:34,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 553 [2022-11-22 01:32:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:32:35,299 INFO L225 Difference]: With dead ends: 59281 [2022-11-22 01:32:35,299 INFO L226 Difference]: Without dead ends: 39716 [2022-11-22 01:32:35,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:32:35,422 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 2720 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 6864 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:32:35,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2720 Valid, 6864 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:32:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39716 states. [2022-11-22 01:32:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39716 to 39706. [2022-11-22 01:32:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39706 states, 23842 states have (on average 1.2893213656572435) internal successors, (30740), 24570 states have internal predecessors, (30740), 13515 states have call successors, (13515), 2354 states have call predecessors, (13515), 2348 states have return successors, (13641), 13287 states have call predecessors, (13641), 13511 states have call successors, (13641) [2022-11-22 01:32:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39706 states to 39706 states and 57896 transitions. [2022-11-22 01:32:39,264 INFO L78 Accepts]: Start accepts. Automaton has 39706 states and 57896 transitions. Word has length 553 [2022-11-22 01:32:39,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:32:39,265 INFO L495 AbstractCegarLoop]: Abstraction has 39706 states and 57896 transitions. [2022-11-22 01:32:39,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2022-11-22 01:32:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 39706 states and 57896 transitions. [2022-11-22 01:32:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2022-11-22 01:32:39,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:32:39,423 INFO L195 NwaCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 11, 11, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:32:39,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:32:39,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 01:32:39,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:32:39,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:32:39,642 INFO L85 PathProgramCache]: Analyzing trace with hash -339363203, now seen corresponding path program 1 times [2022-11-22 01:32:39,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:32:39,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107953955] [2022-11-22 01:32:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:39,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:32:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3263 backedges. 56 proven. 10 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2022-11-22 01:32:42,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:32:42,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107953955] [2022-11-22 01:32:42,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107953955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:32:42,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651572197] [2022-11-22 01:32:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:32:42,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:32:42,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:32:42,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:32:42,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:32:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:32:43,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 4348 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-22 01:32:43,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:32:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3263 backedges. 44 proven. 1136 refuted. 0 times theorem prover too weak. 2083 trivial. 0 not checked. [2022-11-22 01:32:44,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:32:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3263 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3261 trivial. 0 not checked. [2022-11-22 01:32:46,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651572197] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:32:46,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:32:46,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 8] total 19 [2022-11-22 01:32:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150694757] [2022-11-22 01:32:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:32:46,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:32:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:32:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:32:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:32:46,064 INFO L87 Difference]: Start difference. First operand 39706 states and 57896 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (76), 4 states have call predecessors, (76), 2 states have return successors, (74), 4 states have call predecessors, (74), 3 states have call successors, (74) [2022-11-22 01:33:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:33:02,583 INFO L93 Difference]: Finished difference Result 61945 states and 91068 transitions. [2022-11-22 01:33:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:33:02,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (76), 4 states have call predecessors, (76), 2 states have return successors, (74), 4 states have call predecessors, (74), 3 states have call successors, (74) Word has length 550 [2022-11-22 01:33:02,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:33:03,225 INFO L225 Difference]: With dead ends: 61945 [2022-11-22 01:33:03,225 INFO L226 Difference]: Without dead ends: 61886 [2022-11-22 01:33:03,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1089 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-11-22 01:33:03,264 INFO L413 NwaCegarLoop]: 3133 mSDtfsCounter, 10704 mSDsluCounter, 7954 mSDsCounter, 0 mSdLazyCounter, 7006 mSolverCounterSat, 7025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11238 SdHoareTripleChecker+Valid, 11087 SdHoareTripleChecker+Invalid, 14031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7025 IncrementalHoareTripleChecker+Valid, 7006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:33:03,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11238 Valid, 11087 Invalid, 14031 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7025 Valid, 7006 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-11-22 01:33:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61886 states. [2022-11-22 01:33:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61886 to 61862. [2022-11-22 01:33:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61862 states, 37142 states have (on average 1.2908836357762101) internal successors, (47946), 38260 states have internal predecessors, (47946), 21217 states have call successors, (21217), 3494 states have call predecessors, (21217), 3502 states have return successors, (21743), 20883 states have call predecessors, (21743), 21213 states have call successors, (21743) [2022-11-22 01:33:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61862 states to 61862 states and 90906 transitions. [2022-11-22 01:33:07,668 INFO L78 Accepts]: Start accepts. Automaton has 61862 states and 90906 transitions. Word has length 550 [2022-11-22 01:33:07,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:33:07,669 INFO L495 AbstractCegarLoop]: Abstraction has 61862 states and 90906 transitions. [2022-11-22 01:33:07,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (76), 4 states have call predecessors, (76), 2 states have return successors, (74), 4 states have call predecessors, (74), 3 states have call successors, (74) [2022-11-22 01:33:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 61862 states and 90906 transitions. [2022-11-22 01:33:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-11-22 01:33:07,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:33:07,802 INFO L195 NwaCegarLoop]: trace histogram [35, 25, 25, 25, 25, 25, 25, 11, 11, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:33:08,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:33:08,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 01:33:08,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:33:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:33:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash 777123394, now seen corresponding path program 1 times [2022-11-22 01:33:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:33:08,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975414957] [2022-11-22 01:33:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:33:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 56 proven. 10 refuted. 0 times theorem prover too weak. 3245 trivial. 0 not checked. [2022-11-22 01:33:10,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:33:10,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975414957] [2022-11-22 01:33:10,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975414957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:33:10,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836230984] [2022-11-22 01:33:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:33:10,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:33:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:33:10,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:33:10,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cdc7bdc-a188-47bd-b73c-6a442c339c6a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:33:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:33:12,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 4539 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 01:33:12,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:33:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 1374 proven. 19 refuted. 0 times theorem prover too weak. 1918 trivial. 0 not checked. [2022-11-22 01:33:13,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:33:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3311 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 3253 trivial. 0 not checked. [2022-11-22 01:33:14,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836230984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:33:14,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1921674386] [2022-11-22 01:33:14,547 INFO L159 IcfgInterpreter]: Started Sifa with 253 locations of interest [2022-11-22 01:33:14,547 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:33:14,554 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:33:14,561 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:33:14,561 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs