./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:23:49,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:23:49,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:23:49,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:23:49,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:23:49,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:23:49,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:23:49,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:23:49,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:23:49,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:23:49,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:23:49,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:23:49,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:23:49,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:23:49,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:23:49,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:23:49,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:23:49,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:23:49,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:23:49,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:23:49,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:23:49,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:23:49,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:23:49,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:23:49,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:23:49,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:23:49,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:23:49,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:23:49,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:23:49,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:23:49,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:23:49,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:23:49,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:23:49,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:23:49,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:23:49,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:23:49,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:23:49,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:23:49,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:23:49,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:23:49,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:23:49,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:23:49,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:23:49,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:23:49,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:23:49,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:23:49,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:23:49,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:23:49,156 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:23:49,156 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:23:49,157 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:23:49,157 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:23:49,157 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:23:49,157 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:23:49,157 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:23:49,158 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:23:49,158 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:23:49,158 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:23:49,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:23:49,159 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:23:49,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:23:49,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:23:49,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:23:49,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:23:49,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:23:49,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:23:49,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:23:49,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:23:49,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:23:49,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:23:49,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:23:49,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:23:49,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:23:49,162 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:23:49,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:23:49,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:23:49,163 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:23:49,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:23:49,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:23:49,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:23:49,163 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_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 [2022-11-23 14:23:49,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:23:49,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:23:49,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:23:49,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:23:49,449 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:23:49,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2022-11-23 14:23:52,422 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:23:52,996 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:23:52,996 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2022-11-23 14:23:53,040 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/data/294719208/4b0db04502ad43a18e6293cbcc76da21/FLAG6efe40027 [2022-11-23 14:23:53,059 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/data/294719208/4b0db04502ad43a18e6293cbcc76da21 [2022-11-23 14:23:53,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:23:53,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:23:53,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:23:53,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:23:53,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:23:53,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:53" (1/1) ... [2022-11-23 14:23:53,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed9b399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:53, skipping insertion in model container [2022-11-23 14:23:53,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:23:53" (1/1) ... [2022-11-23 14:23:53,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:23:53,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:23:55,387 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_00fa42e7-6710-4dcc-a061-3a0c964f221f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2022-11-23 14:23:55,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:23:55,449 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:23:55,850 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_00fa42e7-6710-4dcc-a061-3a0c964f221f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2022-11-23 14:23:55,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:23:56,054 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:23:56,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56 WrapperNode [2022-11-23 14:23:56,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:23:56,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:23:56,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:23:56,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:23:56,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,324 INFO L138 Inliner]: procedures = 347, calls = 1397, calls flagged for inlining = 224, calls inlined = 207, statements flattened = 3851 [2022-11-23 14:23:56,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:23:56,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:23:56,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:23:56,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:23:56,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,501 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:23:56,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:23:56,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:23:56,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:23:56,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (1/1) ... [2022-11-23 14:23:56,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:23:56,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:56,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:23:56,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:23:56,645 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-11-23 14:23:56,645 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-11-23 14:23:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:23:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:23:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:23:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:23:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:23:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:23:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2022-11-23 14:23:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2022-11-23 14:23:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_read_bd [2022-11-23 14:23:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_read_bd [2022-11-23 14:23:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 14:23:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 14:23:56,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:23:56,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:23:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-23 14:23:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_mdio_poll [2022-11-23 14:23:56,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_mdio_poll [2022-11-23 14:23:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-23 14:23:56,649 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-23 14:23:56,649 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:23:56,650 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:23:56,650 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 14:23:56,650 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 14:23:56,651 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_stop [2022-11-23 14:23:56,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_stop [2022-11-23 14:23:56,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:23:56,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_15 [2022-11-23 14:23:56,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_15 [2022-11-23 14:23:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_ack_irq [2022-11-23 14:23:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_ack_irq [2022-11-23 14:23:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-23 14:23:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-23 14:23:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:23:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:23:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:23:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 14:23:56,654 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 14:23:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:23:56,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:23:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-11-23 14:23:56,655 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-11-23 14:23:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:23:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_get_regs_len [2022-11-23 14:23:56,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_get_regs_len [2022-11-23 14:23:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_read [2022-11-23 14:23:56,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_read [2022-11-23 14:23:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-23 14:23:56,656 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-23 14:23:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:23:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_disable_rx_and_tx [2022-11-23 14:23:56,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_disable_rx_and_tx [2022-11-23 14:23:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_do_set_mac_address [2022-11-23 14:23:56,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_do_set_mac_address [2022-11-23 14:23:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_enable_rx_and_tx [2022-11-23 14:23:56,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_enable_rx_and_tx [2022-11-23 14:23:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_init_ring [2022-11-23 14:23:56,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_init_ring [2022-11-23 14:23:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure devm_ioremap_nocache [2022-11-23 14:23:56,658 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_ioremap_nocache [2022-11-23 14:23:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 14:23:56,659 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 14:23:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:23:56,659 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:23:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:23:56,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:23:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure __rounddown_pow_of_two [2022-11-23 14:23:56,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __rounddown_pow_of_two [2022-11-23 14:23:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:23:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:23:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:23:56,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:23:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:23:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 14:23:56,662 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 14:23:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 14:23:56,662 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 14:23:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:23:56,663 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:23:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-23 14:23:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-23 14:23:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_interrupt [2022-11-23 14:23:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_interrupt [2022-11-23 14:23:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 14:23:56,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 14:23:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 14:23:56,665 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 14:23:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:23:56,665 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:23:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:23:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:23:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:23:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_probe [2022-11-23 14:23:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_probe [2022-11-23 14:23:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:23:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure __devm_request_region [2022-11-23 14:23:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __devm_request_region [2022-11-23 14:23:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_resume [2022-11-23 14:23:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_resume [2022-11-23 14:23:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 14:23:56,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 14:23:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:23:56,668 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:23:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 14:23:56,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 14:23:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 14:23:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 14:23:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:23:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-23 14:23:56,670 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-23 14:23:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_write_bd [2022-11-23 14:23:56,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_write_bd [2022-11-23 14:23:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:23:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:23:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:23:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:23:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_write [2022-11-23 14:23:56,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_write [2022-11-23 14:23:56,677 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:23:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:23:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:23:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:23:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-23 14:23:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-23 14:23:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_enable_irq [2022-11-23 14:23:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_enable_irq [2022-11-23 14:23:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_open [2022-11-23 14:23:56,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_open [2022-11-23 14:23:56,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:23:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:23:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_disable_irq [2022-11-23 14:23:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_disable_irq [2022-11-23 14:23:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 14:23:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 14:23:56,684 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_remove [2022-11-23 14:23:56,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_remove [2022-11-23 14:23:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:23:56,685 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:23:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:23:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-11-23 14:23:56,685 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-11-23 14:23:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:23:56,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:23:56,685 INFO L130 BoogieDeclarations]: Found specification of procedure ethoc_tx_timeout [2022-11-23 14:23:56,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ethoc_tx_timeout [2022-11-23 14:23:56,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:23:56,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:23:57,512 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:23:57,519 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:23:57,815 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:24:15,313 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:24:15,474 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:24:16,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:24:16,492 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 14:24:16,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:24:16 BoogieIcfgContainer [2022-11-23 14:24:16,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:24:16,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:24:16,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:24:16,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:24:16,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:23:53" (1/3) ... [2022-11-23 14:24:16,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f19001c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:24:16, skipping insertion in model container [2022-11-23 14:24:16,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:23:56" (2/3) ... [2022-11-23 14:24:16,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f19001c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:24:16, skipping insertion in model container [2022-11-23 14:24:16,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:24:16" (3/3) ... [2022-11-23 14:24:16,506 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2022-11-23 14:24:16,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:24:16,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:24:16,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:24:16,670 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;@626b9095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:24:16,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:24:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 961 states, 597 states have (on average 1.3299832495812396) internal successors, (794), 611 states have internal predecessors, (794), 299 states have call successors, (299), 65 states have call predecessors, (299), 64 states have return successors, (292), 290 states have call predecessors, (292), 292 states have call successors, (292) [2022-11-23 14:24:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-23 14:24:16,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:16,711 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:16,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2043535415, now seen corresponding path program 1 times [2022-11-23 14:24:16,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:16,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055979528] [2022-11-23 14:24:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:16,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-23 14:24:17,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:17,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055979528] [2022-11-23 14:24:17,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055979528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:17,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:17,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:24:17,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981792346] [2022-11-23 14:24:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:17,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:24:17,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:17,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:24:17,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:17,859 INFO L87 Difference]: Start difference. First operand has 961 states, 597 states have (on average 1.3299832495812396) internal successors, (794), 611 states have internal predecessors, (794), 299 states have call successors, (299), 65 states have call predecessors, (299), 64 states have return successors, (292), 290 states have call predecessors, (292), 292 states have call successors, (292) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 14:24:19,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:22,593 INFO L93 Difference]: Finished difference Result 2778 states and 4015 transitions. [2022-11-23 14:24:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:24:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 137 [2022-11-23 14:24:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:22,622 INFO L225 Difference]: With dead ends: 2778 [2022-11-23 14:24:22,622 INFO L226 Difference]: Without dead ends: 1830 [2022-11-23 14:24:22,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:22,635 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1306 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:22,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 2495 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 516 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 14:24:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2022-11-23 14:24:22,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1830. [2022-11-23 14:24:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1147 states have (on average 1.3269398430688752) internal successors, (1522), 1175 states have internal predecessors, (1522), 557 states have call successors, (557), 126 states have call predecessors, (557), 125 states have return successors, (554), 550 states have call predecessors, (554), 554 states have call successors, (554) [2022-11-23 14:24:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2633 transitions. [2022-11-23 14:24:22,858 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2633 transitions. Word has length 137 [2022-11-23 14:24:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:22,861 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 2633 transitions. [2022-11-23 14:24:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 14:24:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2633 transitions. [2022-11-23 14:24:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-23 14:24:22,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:22,881 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:22,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:24:22,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash -345727484, now seen corresponding path program 1 times [2022-11-23 14:24:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:22,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366061282] [2022-11-23 14:24:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2022-11-23 14:24:23,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:23,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366061282] [2022-11-23 14:24:23,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366061282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:23,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:23,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:24:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793928669] [2022-11-23 14:24:23,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:23,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:24:23,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:24:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:24:23,938 INFO L87 Difference]: Start difference. First operand 1830 states and 2633 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:24:25,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:30,199 INFO L93 Difference]: Finished difference Result 3641 states and 5282 transitions. [2022-11-23 14:24:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:24:30,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 175 [2022-11-23 14:24:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:30,225 INFO L225 Difference]: With dead ends: 3641 [2022-11-23 14:24:30,225 INFO L226 Difference]: Without dead ends: 3637 [2022-11-23 14:24:30,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:24:30,229 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 1320 mSDsluCounter, 3843 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 5220 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:30,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 5220 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1029 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 14:24:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2022-11-23 14:24:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3633. [2022-11-23 14:24:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 2280 states have (on average 1.3285087719298245) internal successors, (3029), 2337 states have internal predecessors, (3029), 1102 states have call successors, (1102), 253 states have call predecessors, (1102), 250 states have return successors, (1144), 1086 states have call predecessors, (1144), 1096 states have call successors, (1144) [2022-11-23 14:24:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5275 transitions. [2022-11-23 14:24:30,450 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5275 transitions. Word has length 175 [2022-11-23 14:24:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:30,453 INFO L495 AbstractCegarLoop]: Abstraction has 3633 states and 5275 transitions. [2022-11-23 14:24:30,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 14:24:30,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5275 transitions. [2022-11-23 14:24:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-23 14:24:30,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:30,460 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:30,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:24:30,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash -949731742, now seen corresponding path program 1 times [2022-11-23 14:24:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:30,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253331210] [2022-11-23 14:24:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:30,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2022-11-23 14:24:31,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:31,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253331210] [2022-11-23 14:24:31,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253331210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:31,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:31,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:24:31,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684275199] [2022-11-23 14:24:31,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:31,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:24:31,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:31,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:24:31,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:24:31,316 INFO L87 Difference]: Start difference. First operand 3633 states and 5275 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 14:24:33,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:36,846 INFO L93 Difference]: Finished difference Result 3639 states and 5280 transitions. [2022-11-23 14:24:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:24:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 180 [2022-11-23 14:24:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:36,871 INFO L225 Difference]: With dead ends: 3639 [2022-11-23 14:24:36,871 INFO L226 Difference]: Without dead ends: 3614 [2022-11-23 14:24:36,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:24:36,875 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 1314 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:36,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 3303 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 771 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-23 14:24:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-11-23 14:24:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3614. [2022-11-23 14:24:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 2272 states have (on average 1.3283450704225352) internal successors, (3018), 2327 states have internal predecessors, (3018), 1093 states have call successors, (1093), 250 states have call predecessors, (1093), 248 states have return successors, (1138), 1080 states have call predecessors, (1138), 1090 states have call successors, (1138) [2022-11-23 14:24:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5249 transitions. [2022-11-23 14:24:37,101 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5249 transitions. Word has length 180 [2022-11-23 14:24:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:37,102 INFO L495 AbstractCegarLoop]: Abstraction has 3614 states and 5249 transitions. [2022-11-23 14:24:37,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 14:24:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5249 transitions. [2022-11-23 14:24:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-23 14:24:37,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:37,127 INFO L195 NwaCegarLoop]: trace histogram [29, 22, 22, 22, 22, 22, 22, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:37,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:24:37,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash -285113565, now seen corresponding path program 1 times [2022-11-23 14:24:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:37,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138001201] [2022-11-23 14:24:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:37,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked. [2022-11-23 14:24:38,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:38,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138001201] [2022-11-23 14:24:38,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138001201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:38,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:38,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:24:38,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287424420] [2022-11-23 14:24:38,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:24:38,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:24:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:38,139 INFO L87 Difference]: Start difference. First operand 3614 states and 5249 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-23 14:24:40,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:43,308 INFO L93 Difference]: Finished difference Result 10156 states and 14671 transitions. [2022-11-23 14:24:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:24:43,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 444 [2022-11-23 14:24:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:43,352 INFO L225 Difference]: With dead ends: 10156 [2022-11-23 14:24:43,353 INFO L226 Difference]: Without dead ends: 6567 [2022-11-23 14:24:43,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:43,376 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1036 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:43,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 2439 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 616 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 14:24:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6567 states. [2022-11-23 14:24:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6567 to 6551. [2022-11-23 14:24:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6551 states, 4075 states have (on average 1.3013496932515338) internal successors, (5303), 4186 states have internal predecessors, (5303), 1991 states have call successors, (1991), 486 states have call predecessors, (1991), 484 states have return successors, (2038), 1962 states have call predecessors, (2038), 1988 states have call successors, (2038) [2022-11-23 14:24:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 9332 transitions. [2022-11-23 14:24:43,916 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 9332 transitions. Word has length 444 [2022-11-23 14:24:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:43,917 INFO L495 AbstractCegarLoop]: Abstraction has 6551 states and 9332 transitions. [2022-11-23 14:24:43,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-23 14:24:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 9332 transitions. [2022-11-23 14:24:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-11-23 14:24:43,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:43,948 INFO L195 NwaCegarLoop]: trace histogram [30, 22, 22, 22, 22, 22, 22, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:43,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:24:43,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 384191962, now seen corresponding path program 1 times [2022-11-23 14:24:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:43,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445173627] [2022-11-23 14:24:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:43,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2375 trivial. 0 not checked. [2022-11-23 14:24:44,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:44,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445173627] [2022-11-23 14:24:44,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445173627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:44,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:44,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:24:44,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097646268] [2022-11-23 14:24:44,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:44,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:24:44,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:44,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:24:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:44,671 INFO L87 Difference]: Start difference. First operand 6551 states and 9332 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-23 14:24:46,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:49,892 INFO L93 Difference]: Finished difference Result 12790 states and 18159 transitions. [2022-11-23 14:24:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:24:49,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 454 [2022-11-23 14:24:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:49,927 INFO L225 Difference]: With dead ends: 12790 [2022-11-23 14:24:49,927 INFO L226 Difference]: Without dead ends: 6264 [2022-11-23 14:24:49,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:49,954 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 1225 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:49,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 2818 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-23 14:24:49,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2022-11-23 14:24:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 6253. [2022-11-23 14:24:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6253 states, 3953 states have (on average 1.2972426005565394) internal successors, (5128), 4057 states have internal predecessors, (5128), 1813 states have call successors, (1813), 488 states have call predecessors, (1813), 486 states have return successors, (1858), 1783 states have call predecessors, (1858), 1810 states have call successors, (1858) [2022-11-23 14:24:50,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6253 states to 6253 states and 8799 transitions. [2022-11-23 14:24:50,588 INFO L78 Accepts]: Start accepts. Automaton has 6253 states and 8799 transitions. Word has length 454 [2022-11-23 14:24:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:50,591 INFO L495 AbstractCegarLoop]: Abstraction has 6253 states and 8799 transitions. [2022-11-23 14:24:50,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-23 14:24:50,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6253 states and 8799 transitions. [2022-11-23 14:24:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-11-23 14:24:50,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:50,639 INFO L195 NwaCegarLoop]: trace histogram [30, 22, 22, 22, 22, 22, 22, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:50,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:24:50,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:50,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash 781695200, now seen corresponding path program 1 times [2022-11-23 14:24:50,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:50,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929546021] [2022-11-23 14:24:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:50,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2394 trivial. 0 not checked. [2022-11-23 14:24:51,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:51,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929546021] [2022-11-23 14:24:51,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929546021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:51,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:51,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:24:51,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364165676] [2022-11-23 14:24:51,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:51,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:24:51,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:24:51,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:51,450 INFO L87 Difference]: Start difference. First operand 6253 states and 8799 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-23 14:24:53,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:24:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:57,298 INFO L93 Difference]: Finished difference Result 14666 states and 20683 transitions. [2022-11-23 14:24:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:24:57,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 459 [2022-11-23 14:24:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:57,349 INFO L225 Difference]: With dead ends: 14666 [2022-11-23 14:24:57,350 INFO L226 Difference]: Without dead ends: 8801 [2022-11-23 14:24:57,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:57,375 INFO L413 NwaCegarLoop]: 2084 mSDtfsCounter, 1223 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:57,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 3155 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 778 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-23 14:24:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8801 states. [2022-11-23 14:24:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8801 to 8790. [2022-11-23 14:24:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 5578 states have (on average 1.2981355324489063) internal successors, (7241), 5725 states have internal predecessors, (7241), 2521 states have call successors, (2521), 692 states have call predecessors, (2521), 690 states have return successors, (2589), 2478 states have call predecessors, (2589), 2518 states have call successors, (2589) [2022-11-23 14:24:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 12351 transitions. [2022-11-23 14:24:58,003 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 12351 transitions. Word has length 459 [2022-11-23 14:24:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:58,004 INFO L495 AbstractCegarLoop]: Abstraction has 8790 states and 12351 transitions. [2022-11-23 14:24:58,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-23 14:24:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 12351 transitions. [2022-11-23 14:24:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-11-23 14:24:58,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:58,041 INFO L195 NwaCegarLoop]: trace histogram [32, 22, 22, 22, 22, 22, 22, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:58,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:24:58,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:58,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:58,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1387640172, now seen corresponding path program 1 times [2022-11-23 14:24:58,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:58,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047876164] [2022-11-23 14:24:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:58,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:25:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2599 trivial. 0 not checked. [2022-11-23 14:25:00,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:25:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047876164] [2022-11-23 14:25:00,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047876164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:25:00,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:25:00,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:25:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093582998] [2022-11-23 14:25:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:25:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:25:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:25:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:25:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:25:00,876 INFO L87 Difference]: Start difference. First operand 8790 states and 12351 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-23 14:25:02,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:25:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:25:06,182 INFO L93 Difference]: Finished difference Result 17224 states and 24436 transitions. [2022-11-23 14:25:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:25:06,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 500 [2022-11-23 14:25:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:25:06,237 INFO L225 Difference]: With dead ends: 17224 [2022-11-23 14:25:06,238 INFO L226 Difference]: Without dead ends: 8822 [2022-11-23 14:25:06,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:25:06,273 INFO L413 NwaCegarLoop]: 1098 mSDtfsCounter, 10 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:25:06,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3267 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 785 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 14:25:06,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2022-11-23 14:25:06,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 8814. [2022-11-23 14:25:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8814 states, 5598 states have (on average 1.2970703822793854) internal successors, (7261), 5749 states have internal predecessors, (7261), 2521 states have call successors, (2521), 692 states have call predecessors, (2521), 694 states have return successors, (2594), 2478 states have call predecessors, (2594), 2518 states have call successors, (2594) [2022-11-23 14:25:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 12376 transitions. [2022-11-23 14:25:06,802 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 12376 transitions. Word has length 500 [2022-11-23 14:25:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:25:06,803 INFO L495 AbstractCegarLoop]: Abstraction has 8814 states and 12376 transitions. [2022-11-23 14:25:06,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-23 14:25:06,803 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 12376 transitions. [2022-11-23 14:25:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-11-23 14:25:06,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:25:06,840 INFO L195 NwaCegarLoop]: trace histogram [32, 22, 22, 22, 22, 22, 22, 13, 13, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:25:06,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:25:06,840 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] === [2022-11-23 14:25:06,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:25:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2049974854, now seen corresponding path program 1 times [2022-11-23 14:25:06,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:25:06,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187089784] [2022-11-23 14:25:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:25:06,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:25:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:25:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 38 proven. 20 refuted. 0 times theorem prover too weak. 2635 trivial. 0 not checked. [2022-11-23 14:25:09,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:25:09,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187089784] [2022-11-23 14:25:09,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187089784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:25:09,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093143483] [2022-11-23 14:25:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:25:09,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:25:09,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:25:09,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:25:09,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00fa42e7-6710-4dcc-a061-3a0c964f221f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:25:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:25:11,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 4793 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 14:25:11,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:25:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 1346 proven. 23 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2022-11-23 14:25:14,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:25:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 2633 trivial. 0 not checked. [2022-11-23 14:25:15,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093143483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:25:15,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1483285902] [2022-11-23 14:25:15,772 INFO L159 IcfgInterpreter]: Started Sifa with 234 locations of interest [2022-11-23 14:25:15,773 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:25:15,777 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:25:15,782 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:25:15,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:28:11,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1352 treesize of output 1151 [2022-11-23 14:30:44,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1352 treesize of output 1151 [2022-11-23 14:30:45,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 690 treesize of output 651 [2022-11-23 14:37:51,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 14:37:51,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 14:38:06,199 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:38:06,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-11-23 14:38:06,334 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-23 14:38:06,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 37 [2022-11-23 14:38:06,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-23 14:38:06,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-23 14:38:06,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-23 14:38:06,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-23 14:38:13,106 INFO L321 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2022-11-23 14:38:13,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 606 treesize of output 600 [2022-11-23 14:38:13,230 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 14:38:13,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 594 treesize of output 597 [2022-11-23 14:38:13,369 INFO L321 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2022-11-23 14:38:13,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 584 treesize of output 587