./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-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/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_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/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_b8ed2a43-2652-49db-afdd-d82169bc0ffe/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 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 --- 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 16:01:52,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:01:52,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:01:52,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:01:52,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:01:52,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:01:52,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:01:52,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:01:52,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:01:52,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:01:52,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:01:52,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:01:52,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:01:52,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:01:52,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:01:52,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:01:52,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:01:52,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:01:52,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:01:52,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:01:52,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:01:52,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:01:52,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:01:52,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:01:52,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:01:52,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:01:52,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:01:52,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:01:52,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:01:52,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:01:52,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:01:52,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:01:52,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:01:52,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:01:52,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:01:52,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:01:52,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:01:52,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:01:52,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:01:52,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:01:52,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:01:52,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:01:52,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:01:52,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:01:52,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:01:52,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:01:52,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:01:52,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:01:52,115 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:01:52,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:01:52,116 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:01:52,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:01:52,117 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:01:52,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:01:52,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:01:52,118 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:01:52,118 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:01:52,119 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:01:52,119 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:01:52,119 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:01:52,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:01:52,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:01:52,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:01:52,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:01:52,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:01:52,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:01:52,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:01:52,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:01:52,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:01:52,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:01:52,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:01:52,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:01:52,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:01:52,125 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:01:52,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:01:52,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:01:52,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:01:52,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:01:52,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:01:52,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:01:52,127 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_b8ed2a43-2652-49db-afdd-d82169bc0ffe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 [2022-11-23 16:01:52,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:01:52,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:01:52,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:01:52,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:01:52,553 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:01:52,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-23 16:01:56,523 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:01:57,171 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:01:57,172 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-23 16:01:57,231 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/data/c6c3ce2ba/2984d869ae71441f92f2c30e7718f8bf/FLAG2dc45da9f [2022-11-23 16:01:57,251 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/data/c6c3ce2ba/2984d869ae71441f92f2c30e7718f8bf [2022-11-23 16:01:57,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:01:57,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:01:57,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:01:57,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:01:57,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:01:57,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:01:57" (1/1) ... [2022-11-23 16:01:57,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7034f7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:57, skipping insertion in model container [2022-11-23 16:01:57,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:01:57" (1/1) ... [2022-11-23 16:01:57,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:01:57,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:02:00,120 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_b8ed2a43-2652-49db-afdd-d82169bc0ffe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2022-11-23 16:02:00,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:02:00,195 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:02:00,702 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_b8ed2a43-2652-49db-afdd-d82169bc0ffe/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2022-11-23 16:02:00,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:02:00,820 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:02:00,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00 WrapperNode [2022-11-23 16:02:00,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:02:00,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:02:00,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:02:00,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:02:00,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:00,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,118 INFO L138 Inliner]: procedures = 306, calls = 1481, calls flagged for inlining = 179, calls inlined = 169, statements flattened = 4072 [2022-11-23 16:02:01,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:02:01,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:02:01,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:02:01,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:02:01,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,500 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:02:01,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:02:01,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:02:01,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:02:01,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (1/1) ... [2022-11-23 16:02:01,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:02:01,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:01,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:02:01,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:02:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 16:02:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 16:02:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 16:02:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 16:02:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 16:02:01,655 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 16:02:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 16:02:01,655 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 16:02:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-23 16:02:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-23 16:02:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 16:02:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 16:02:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2022-11-23 16:02:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2022-11-23 16:02:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 16:02:01,657 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 16:02:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-23 16:02:01,657 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-23 16:02:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 16:02:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 16:02:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2022-11-23 16:02:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2022-11-23 16:02:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-23 16:02:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-23 16:02:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-23 16:02:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-23 16:02:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2022-11-23 16:02:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2022-11-23 16:02:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:02:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 16:02:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 16:02:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 16:02:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 16:02:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 16:02:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2022-11-23 16:02:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2022-11-23 16:02:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2022-11-23 16:02:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2022-11-23 16:02:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 16:02:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 16:02:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2022-11-23 16:02:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2022-11-23 16:02:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-11-23 16:02:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-11-23 16:02:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:02:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 16:02:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-23 16:02:01,666 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-23 16:02:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-23 16:02:01,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-23 16:02:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 16:02:01,668 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 16:02:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 16:02:01,668 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 16:02:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 16:02:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 16:02:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2022-11-23 16:02:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2022-11-23 16:02:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 16:02:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 16:02:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 16:02:01,671 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 16:02:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-23 16:02:01,671 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-23 16:02:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 16:02:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 16:02:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-23 16:02:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-23 16:02:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 16:02:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2022-11-23 16:02:01,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2022-11-23 16:02:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 16:02:01,673 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 16:02:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2022-11-23 16:02:01,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2022-11-23 16:02:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 16:02:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 16:02:01,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 16:02:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2022-11-23 16:02:01,677 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2022-11-23 16:02:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2022-11-23 16:02:01,677 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2022-11-23 16:02:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-23 16:02:01,678 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-23 16:02:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:02:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2022-11-23 16:02:01,678 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2022-11-23 16:02:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-23 16:02:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-23 16:02:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 16:02:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 16:02:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-23 16:02:01,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-23 16:02:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 16:02:01,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 16:02:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2022-11-23 16:02:01,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2022-11-23 16:02:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2022-11-23 16:02:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2022-11-23 16:02:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:02:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2022-11-23 16:02:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2022-11-23 16:02:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2022-11-23 16:02:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2022-11-23 16:02:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 16:02:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 16:02:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2022-11-23 16:02:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2022-11-23 16:02:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 16:02:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 16:02:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 16:02:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 16:02:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 16:02:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-23 16:02:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-23 16:02:01,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-23 16:02:01,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-23 16:02:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2022-11-23 16:02:01,694 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2022-11-23 16:02:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:02:01,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 16:02:01,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 16:02:01,700 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 16:02:01,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 16:02:01,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 16:02:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-23 16:02:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-23 16:02:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 16:02:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 16:02:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 16:02:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 16:02:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2022-11-23 16:02:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2022-11-23 16:02:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 16:02:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 16:02:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2022-11-23 16:02:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2022-11-23 16:02:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 16:02:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 16:02:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-23 16:02:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-23 16:02:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 16:02:01,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 16:02:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 16:02:01,705 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 16:02:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2022-11-23 16:02:01,705 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2022-11-23 16:02:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2022-11-23 16:02:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2022-11-23 16:02:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:02:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-23 16:02:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-23 16:02:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2022-11-23 16:02:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2022-11-23 16:02:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-23 16:02:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-23 16:02:01,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 16:02:01,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 16:02:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:02:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:02:01,709 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 16:02:01,709 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 16:02:02,662 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:02:02,666 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:02:03,340 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 16:03:21,780 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 16:03:23,436 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:03:26,003 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:03:26,004 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 16:03:26,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:03:26 BoogieIcfgContainer [2022-11-23 16:03:26,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:03:26,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:03:26,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:03:26,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:03:26,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:01:57" (1/3) ... [2022-11-23 16:03:26,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e97e1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:03:26, skipping insertion in model container [2022-11-23 16:03:26,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:02:00" (2/3) ... [2022-11-23 16:03:26,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e97e1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:03:26, skipping insertion in model container [2022-11-23 16:03:26,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:03:26" (3/3) ... [2022-11-23 16:03:26,028 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-23 16:03:26,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:03:26,055 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:03:26,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:03:26,193 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;@4e0d3291, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:03:26,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:03:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 1065 states, 640 states have (on average 1.328125) internal successors, (850), 660 states have internal predecessors, (850), 352 states have call successors, (352), 73 states have call predecessors, (352), 72 states have return successors, (343), 336 states have call predecessors, (343), 343 states have call successors, (343) [2022-11-23 16:03:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-23 16:03:26,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:26,235 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2022-11-23 16:03:26,236 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 16:03:26,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash -75803096, now seen corresponding path program 1 times [2022-11-23 16:03:26,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:26,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877835474] [2022-11-23 16:03:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-23 16:03:28,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877835474] [2022-11-23 16:03:28,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877835474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:28,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:28,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:03:28,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972438669] [2022-11-23 16:03:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:28,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:03:28,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:28,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:03:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:28,284 INFO L87 Difference]: Start difference. First operand has 1065 states, 640 states have (on average 1.328125) internal successors, (850), 660 states have internal predecessors, (850), 352 states have call successors, (352), 73 states have call predecessors, (352), 72 states have return successors, (343), 336 states have call predecessors, (343), 343 states have call successors, (343) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 16:03:30,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:35,073 INFO L93 Difference]: Finished difference Result 3072 states and 4472 transitions. [2022-11-23 16:03:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:03:35,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2022-11-23 16:03:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:35,120 INFO L225 Difference]: With dead ends: 3072 [2022-11-23 16:03:35,121 INFO L226 Difference]: Without dead ends: 2017 [2022-11-23 16:03:35,137 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 16:03:35,141 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1437 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:35,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2870 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 500 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-23 16:03:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-11-23 16:03:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2022-11-23 16:03:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1225 states have (on average 1.3208163265306123) internal successors, (1618), 1266 states have internal predecessors, (1618), 651 states have call successors, (651), 141 states have call predecessors, (651), 140 states have return successors, (647), 633 states have call predecessors, (647), 647 states have call successors, (647) [2022-11-23 16:03:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2916 transitions. [2022-11-23 16:03:35,465 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2916 transitions. Word has length 135 [2022-11-23 16:03:35,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:35,466 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 2916 transitions. [2022-11-23 16:03:35,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-23 16:03:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2916 transitions. [2022-11-23 16:03:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 16:03:35,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:35,500 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 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] [2022-11-23 16:03:35,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:03:35,501 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 16:03:35,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:35,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1313612617, now seen corresponding path program 1 times [2022-11-23 16:03:35,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:35,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604299739] [2022-11-23 16:03:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:35,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-23 16:03:37,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:37,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604299739] [2022-11-23 16:03:37,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604299739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:37,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:37,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:03:37,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261792675] [2022-11-23 16:03:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:37,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:03:37,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:03:37,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:03:37,604 INFO L87 Difference]: Start difference. First operand 2017 states and 2916 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 16:03:39,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:46,998 INFO L93 Difference]: Finished difference Result 4015 states and 5841 transitions. [2022-11-23 16:03:46,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:03:46,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 178 [2022-11-23 16:03:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:47,036 INFO L225 Difference]: With dead ends: 4015 [2022-11-23 16:03:47,037 INFO L226 Difference]: Without dead ends: 4011 [2022-11-23 16:03:47,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:03:47,043 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1466 mSDsluCounter, 4610 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:47,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 6285 Invalid, 1016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1012 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 16:03:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-11-23 16:03:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 4007. [2022-11-23 16:03:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 2435 states have (on average 1.3215605749486652) internal successors, (3218), 2518 states have internal predecessors, (3218), 1291 states have call successors, (1291), 283 states have call predecessors, (1291), 280 states have return successors, (1325), 1253 states have call predecessors, (1325), 1283 states have call successors, (1325) [2022-11-23 16:03:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5834 transitions. [2022-11-23 16:03:47,457 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5834 transitions. Word has length 178 [2022-11-23 16:03:47,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:47,458 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 5834 transitions. [2022-11-23 16:03:47,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 16:03:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5834 transitions. [2022-11-23 16:03:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-23 16:03:47,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:47,469 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:47,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:03:47,470 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 16:03:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:47,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1556319059, now seen corresponding path program 1 times [2022-11-23 16:03:47,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:47,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268634883] [2022-11-23 16:03:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:47,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-23 16:03:49,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:49,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268634883] [2022-11-23 16:03:49,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268634883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:49,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:49,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:03:49,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444677839] [2022-11-23 16:03:49,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:49,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:03:49,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:03:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:03:49,121 INFO L87 Difference]: Start difference. First operand 4007 states and 5834 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 16:03:51,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:03:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:56,963 INFO L93 Difference]: Finished difference Result 4013 states and 5839 transitions. [2022-11-23 16:03:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:03:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 183 [2022-11-23 16:03:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:56,996 INFO L225 Difference]: With dead ends: 4013 [2022-11-23 16:03:56,996 INFO L226 Difference]: Without dead ends: 3984 [2022-11-23 16:03:57,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:03:57,002 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 1463 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3816 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:57,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 3816 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 720 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 16:03:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2022-11-23 16:03:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3984. [2022-11-23 16:03:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3984 states, 2427 states have (on average 1.3209723939019364) internal successors, (3206), 2507 states have internal predecessors, (3206), 1279 states have call successors, (1279), 279 states have call predecessors, (1279), 277 states have return successors, (1317), 1245 states have call predecessors, (1317), 1275 states have call successors, (1317) [2022-11-23 16:03:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5802 transitions. [2022-11-23 16:03:57,322 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5802 transitions. Word has length 183 [2022-11-23 16:03:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:57,323 INFO L495 AbstractCegarLoop]: Abstraction has 3984 states and 5802 transitions. [2022-11-23 16:03:57,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 16:03:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5802 transitions. [2022-11-23 16:03:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-23 16:03:57,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:57,354 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:57,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:03:57,355 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 16:03:57,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash -161402344, now seen corresponding path program 1 times [2022-11-23 16:03:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:57,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184303535] [2022-11-23 16:03:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:57,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-11-23 16:03:58,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:58,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184303535] [2022-11-23 16:03:58,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184303535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:58,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:58,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:03:58,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118634502] [2022-11-23 16:03:58,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:03:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:03:58,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:58,620 INFO L87 Difference]: Start difference. First operand 3984 states and 5802 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-23 16:04:00,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:05,408 INFO L93 Difference]: Finished difference Result 11470 states and 16658 transitions. [2022-11-23 16:04:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:05,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 272 [2022-11-23 16:04:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:05,472 INFO L225 Difference]: With dead ends: 11470 [2022-11-23 16:04:05,472 INFO L226 Difference]: Without dead ends: 7509 [2022-11-23 16:04:05,503 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 16:04:05,508 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1234 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:05,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2771 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 560 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 16:04:05,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2022-11-23 16:04:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 7493. [2022-11-23 16:04:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7493 states, 4527 states have (on average 1.2999779103158824) internal successors, (5885), 4696 states have internal predecessors, (5885), 2415 states have call successors, (2415), 552 states have call predecessors, (2415), 550 states have return successors, (2463), 2340 states have call predecessors, (2463), 2411 states have call successors, (2463) [2022-11-23 16:04:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7493 states to 7493 states and 10763 transitions. [2022-11-23 16:04:06,128 INFO L78 Accepts]: Start accepts. Automaton has 7493 states and 10763 transitions. Word has length 272 [2022-11-23 16:04:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:06,129 INFO L495 AbstractCegarLoop]: Abstraction has 7493 states and 10763 transitions. [2022-11-23 16:04:06,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-23 16:04:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7493 states and 10763 transitions. [2022-11-23 16:04:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-23 16:04:06,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:06,174 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 7, 7, 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] [2022-11-23 16:04:06,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:04:06,175 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 16:04:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2050866035, now seen corresponding path program 1 times [2022-11-23 16:04:06,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123839447] [2022-11-23 16:04:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-23 16:04:07,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:07,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123839447] [2022-11-23 16:04:07,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123839447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:07,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:07,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:07,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705737285] [2022-11-23 16:04:07,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:07,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:07,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:07,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:07,306 INFO L87 Difference]: Start difference. First operand 7493 states and 10763 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 16:04:09,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:14,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:14,316 INFO L93 Difference]: Finished difference Result 16615 states and 23779 transitions. [2022-11-23 16:04:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:14,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 284 [2022-11-23 16:04:14,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:14,394 INFO L225 Difference]: With dead ends: 16615 [2022-11-23 16:04:14,394 INFO L226 Difference]: Without dead ends: 9145 [2022-11-23 16:04:14,447 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 16:04:14,448 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 1354 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:14,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 2928 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 551 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 16:04:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2022-11-23 16:04:15,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 9129. [2022-11-23 16:04:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9129 states, 5505 states have (on average 1.2864668483197093) internal successors, (7082), 5723 states have internal predecessors, (7082), 2923 states have call successors, (2923), 702 states have call predecessors, (2923), 700 states have return successors, (2970), 2823 states have call predecessors, (2970), 2919 states have call successors, (2970) [2022-11-23 16:04:15,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9129 states to 9129 states and 12975 transitions. [2022-11-23 16:04:15,355 INFO L78 Accepts]: Start accepts. Automaton has 9129 states and 12975 transitions. Word has length 284 [2022-11-23 16:04:15,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:15,356 INFO L495 AbstractCegarLoop]: Abstraction has 9129 states and 12975 transitions. [2022-11-23 16:04:15,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-23 16:04:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 9129 states and 12975 transitions. [2022-11-23 16:04:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-23 16:04:15,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:15,394 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 7, 7, 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] [2022-11-23 16:04:15,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:04:15,395 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 16:04:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:15,396 INFO L85 PathProgramCache]: Analyzing trace with hash -495588830, now seen corresponding path program 1 times [2022-11-23 16:04:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:15,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323057945] [2022-11-23 16:04:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:15,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-11-23 16:04:16,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323057945] [2022-11-23 16:04:16,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323057945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:16,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:16,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122222617] [2022-11-23 16:04:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:16,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:16,337 INFO L87 Difference]: Start difference. First operand 9129 states and 12975 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-23 16:04:18,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:22,847 INFO L93 Difference]: Finished difference Result 25383 states and 36106 transitions. [2022-11-23 16:04:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:22,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 265 [2022-11-23 16:04:22,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:22,969 INFO L225 Difference]: With dead ends: 25383 [2022-11-23 16:04:22,970 INFO L226 Difference]: Without dead ends: 16277 [2022-11-23 16:04:23,035 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 16:04:23,036 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 1389 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:23,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 2911 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 523 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-23 16:04:23,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16277 states. [2022-11-23 16:04:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16277 to 16259. [2022-11-23 16:04:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16259 states, 9851 states have (on average 1.2857577910871993) internal successors, (12666), 10257 states have internal predecessors, (12666), 5151 states have call successors, (5151), 1262 states have call predecessors, (5151), 1256 states have return successors, (5241), 4955 states have call predecessors, (5241), 5147 states have call successors, (5241) [2022-11-23 16:04:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16259 states to 16259 states and 23058 transitions. [2022-11-23 16:04:24,523 INFO L78 Accepts]: Start accepts. Automaton has 16259 states and 23058 transitions. Word has length 265 [2022-11-23 16:04:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:24,527 INFO L495 AbstractCegarLoop]: Abstraction has 16259 states and 23058 transitions. [2022-11-23 16:04:24,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-23 16:04:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 16259 states and 23058 transitions. [2022-11-23 16:04:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-23 16:04:24,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:24,597 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 8, 8, 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] [2022-11-23 16:04:24,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:04:24,598 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 16:04:24,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:24,598 INFO L85 PathProgramCache]: Analyzing trace with hash 337639195, now seen corresponding path program 1 times [2022-11-23 16:04:24,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:24,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006166281] [2022-11-23 16:04:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:24,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-11-23 16:04:25,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006166281] [2022-11-23 16:04:25,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006166281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:25,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:25,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576652958] [2022-11-23 16:04:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:25,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:25,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:25,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:25,714 INFO L87 Difference]: Start difference. First operand 16259 states and 23058 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 16:04:27,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:34,104 INFO L93 Difference]: Finished difference Result 38165 states and 54242 transitions. [2022-11-23 16:04:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:34,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 270 [2022-11-23 16:04:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:34,283 INFO L225 Difference]: With dead ends: 38165 [2022-11-23 16:04:34,283 INFO L226 Difference]: Without dead ends: 23473 [2022-11-23 16:04:34,365 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 16:04:34,367 INFO L413 NwaCegarLoop]: 2271 mSDtfsCounter, 1404 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:34,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 3521 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-23 16:04:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23473 states. [2022-11-23 16:04:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23473 to 23455. [2022-11-23 16:04:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23455 states, 14223 states have (on average 1.2862265344863952) internal successors, (18294), 14817 states have internal predecessors, (18294), 7415 states have call successors, (7415), 1826 states have call predecessors, (7415), 1816 states have return successors, (7549), 7123 states have call predecessors, (7549), 7411 states have call successors, (7549) [2022-11-23 16:04:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 33258 transitions. [2022-11-23 16:04:36,370 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 33258 transitions. Word has length 270 [2022-11-23 16:04:36,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:36,371 INFO L495 AbstractCegarLoop]: Abstraction has 23455 states and 33258 transitions. [2022-11-23 16:04:36,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 16:04:36,372 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 33258 transitions. [2022-11-23 16:04:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-23 16:04:36,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:36,456 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 13, 13, 13, 13, 6, 6, 3, 3, 3, 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] [2022-11-23 16:04:36,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:04:36,456 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 16:04:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash 447233273, now seen corresponding path program 1 times [2022-11-23 16:04:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:36,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180595340] [2022-11-23 16:04:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:36,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-11-23 16:04:37,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:37,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180595340] [2022-11-23 16:04:37,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180595340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:37,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:37,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977688237] [2022-11-23 16:04:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:37,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:37,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:37,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:37,427 INFO L87 Difference]: Start difference. First operand 23455 states and 33258 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 16:04:39,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:45,496 INFO L93 Difference]: Finished difference Result 64471 states and 91240 transitions. [2022-11-23 16:04:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:45,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 282 [2022-11-23 16:04:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:45,751 INFO L225 Difference]: With dead ends: 64471 [2022-11-23 16:04:45,751 INFO L226 Difference]: Without dead ends: 41039 [2022-11-23 16:04:45,875 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 16:04:45,877 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1339 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:45,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3148 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 556 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 16:04:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41039 states. [2022-11-23 16:04:48,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41039 to 40983. [2022-11-23 16:04:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40983 states, 24906 states have (on average 1.2782462057335582) internal successors, (31836), 26012 states have internal predecessors, (31836), 12811 states have call successors, (12811), 3283 states have call predecessors, (12811), 3265 states have return successors, (13064), 12218 states have call predecessors, (13064), 12807 states have call successors, (13064) [2022-11-23 16:04:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40983 states to 40983 states and 57711 transitions. [2022-11-23 16:04:49,138 INFO L78 Accepts]: Start accepts. Automaton has 40983 states and 57711 transitions. Word has length 282 [2022-11-23 16:04:49,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:49,139 INFO L495 AbstractCegarLoop]: Abstraction has 40983 states and 57711 transitions. [2022-11-23 16:04:49,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-23 16:04:49,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40983 states and 57711 transitions. [2022-11-23 16:04:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-23 16:04:49,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:49,241 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 7, 7, 5, 5, 5, 3, 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] [2022-11-23 16:04:49,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:04:49,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:49,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:49,242 INFO L85 PathProgramCache]: Analyzing trace with hash 907404462, now seen corresponding path program 1 times [2022-11-23 16:04:49,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:49,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994743193] [2022-11-23 16:04:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:49,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2022-11-23 16:04:50,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:50,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994743193] [2022-11-23 16:04:50,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994743193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:50,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:50,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995146987] [2022-11-23 16:04:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:50,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:50,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:50,704 INFO L87 Difference]: Start difference. First operand 40983 states and 57711 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-23 16:04:52,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:01,580 INFO L93 Difference]: Finished difference Result 100571 states and 141761 transitions. [2022-11-23 16:05:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:01,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 294 [2022-11-23 16:05:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:02,022 INFO L225 Difference]: With dead ends: 100571 [2022-11-23 16:05:02,023 INFO L226 Difference]: Without dead ends: 60035 [2022-11-23 16:05:02,441 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 16:05:02,445 INFO L413 NwaCegarLoop]: 2430 mSDtfsCounter, 1382 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:02,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 3673 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 733 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-23 16:05:02,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60035 states. [2022-11-23 16:05:06,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60035 to 59979. [2022-11-23 16:05:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59979 states, 36492 states have (on average 1.2770470240052614) internal successors, (46602), 38154 states have internal predecessors, (46602), 18697 states have call successors, (18697), 4815 states have call predecessors, (18697), 4789 states have return successors, (19065), 17800 states have call predecessors, (19065), 18693 states have call successors, (19065) [2022-11-23 16:05:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59979 states to 59979 states and 84364 transitions. [2022-11-23 16:05:06,991 INFO L78 Accepts]: Start accepts. Automaton has 59979 states and 84364 transitions. Word has length 294 [2022-11-23 16:05:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:06,992 INFO L495 AbstractCegarLoop]: Abstraction has 59979 states and 84364 transitions. [2022-11-23 16:05:06,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-23 16:05:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 59979 states and 84364 transitions. [2022-11-23 16:05:07,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-23 16:05:07,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:07,097 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 7, 7, 4, 4, 4, 3, 3, 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] [2022-11-23 16:05:07,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:05:07,098 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1005428417, now seen corresponding path program 1 times [2022-11-23 16:05:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:07,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288065954] [2022-11-23 16:05:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-11-23 16:05:08,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:08,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288065954] [2022-11-23 16:05:08,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288065954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:08,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115571539] [2022-11-23 16:05:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:08,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:08,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:08,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:08,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:05:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:11,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 4121 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 16:05:11,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2022-11-23 16:05:11,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:05:11,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115571539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:11,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:05:11,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 16:05:11,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288633526] [2022-11-23 16:05:11,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:11,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:11,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:11,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:11,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:11,679 INFO L87 Difference]: Start difference. First operand 59979 states and 84364 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-23 16:05:13,750 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 16:05:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:22,794 INFO L93 Difference]: Finished difference Result 147279 states and 207244 transitions. [2022-11-23 16:05:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:22,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 299 [2022-11-23 16:05:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:23,227 INFO L225 Difference]: With dead ends: 147279 [2022-11-23 16:05:23,227 INFO L226 Difference]: Without dead ends: 87747 [2022-11-23 16:05:23,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:23,420 INFO L413 NwaCegarLoop]: 1875 mSDtfsCounter, 1383 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:23,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 3107 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 16:05:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87747 states. [2022-11-23 16:05:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87747 to 87667. [2022-11-23 16:05:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87667 states, 53452 states have (on average 1.2769213499962584) internal successors, (68254), 55924 states have internal predecessors, (68254), 27151 states have call successors, (27151), 7101 states have call predecessors, (27151), 7063 states have return successors, (27693), 25784 states have call predecessors, (27693), 27147 states have call successors, (27693) [2022-11-23 16:05:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87667 states to 87667 states and 123098 transitions. [2022-11-23 16:05:29,581 INFO L78 Accepts]: Start accepts. Automaton has 87667 states and 123098 transitions. Word has length 299 [2022-11-23 16:05:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:29,582 INFO L495 AbstractCegarLoop]: Abstraction has 87667 states and 123098 transitions. [2022-11-23 16:05:29,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-23 16:05:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 87667 states and 123098 transitions. [2022-11-23 16:05:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-23 16:05:29,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:29,699 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 10, 10, 4, 4, 4, 3, 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] [2022-11-23 16:05:29,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 16:05:29,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ed2a43-2652-49db-afdd-d82169bc0ffe/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:29,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash 396346673, now seen corresponding path program 1 times [2022-11-23 16:05:29,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:29,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489613317] [2022-11-23 16:05:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:29,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1073 trivial. 0 not checked. [2022-11-23 16:05:33,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:33,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489613317] [2022-11-23 16:05:33,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489613317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:33,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:33,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:05:33,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847138129] [2022-11-23 16:05:33,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:33,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:05:33,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:33,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:05:33,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:33,422 INFO L87 Difference]: Start difference. First operand 87667 states and 123098 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-23 16:05:35,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:47,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:47,360 INFO L93 Difference]: Finished difference Result 175473 states and 248535 transitions. [2022-11-23 16:05:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:05:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) Word has length 307 [2022-11-23 16:05:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:47,997 INFO L225 Difference]: With dead ends: 175473 [2022-11-23 16:05:47,998 INFO L226 Difference]: Without dead ends: 88253 [2022-11-23 16:05:48,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:05:48,330 INFO L413 NwaCegarLoop]: 1272 mSDtfsCounter, 2 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5060 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:48,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5060 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 982 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-23 16:05:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88253 states.