./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/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_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI --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-5e519f3 [2022-11-03 02:39:36,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:39:36,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:39:36,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:39:36,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:39:36,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:39:36,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:39:36,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:39:36,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:39:36,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:39:36,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:39:36,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:39:36,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:39:36,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:39:36,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:39:36,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:39:36,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:39:36,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:39:36,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:39:36,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:39:36,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:39:36,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:39:36,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:39:36,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:39:36,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:39:36,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:39:36,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:39:36,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:39:36,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:39:36,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:39:36,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:39:36,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:39:36,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:39:36,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:39:36,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:39:36,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:39:36,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:39:36,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:39:36,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:39:36,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:39:36,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:39:36,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:39:36,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:39:36,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:39:36,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:39:36,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:39:36,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:39:36,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:39:36,458 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:39:36,458 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:39:36,458 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:39:36,459 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:39:36,459 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:39:36,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:39:36,459 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:39:36,459 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:39:36,460 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:39:36,460 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:39:36,460 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:39:36,460 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:39:36,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:39:36,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:39:36,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:39:36,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:39:36,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:39:36,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:39:36,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:39:36,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:39:36,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:39:36,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:39:36,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:39:36,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:39:36,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:39:36,469 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:39:36,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:39:36,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:39:36,469 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:39:36,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:39:36,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:39:36,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:39:36,471 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_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 [2022-11-03 02:39:36,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:39:36,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:39:36,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:39:36,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:39:36,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:39:36,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-03 02:39:36,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/data/c654025ba/97f32a2bb4f14ec1aac1726d207a6c15/FLAG1ce604e21 [2022-11-03 02:39:37,898 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:39:37,899 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-03 02:39:37,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/data/c654025ba/97f32a2bb4f14ec1aac1726d207a6c15/FLAG1ce604e21 [2022-11-03 02:39:38,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/data/c654025ba/97f32a2bb4f14ec1aac1726d207a6c15 [2022-11-03 02:39:38,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:39:38,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:39:38,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:39:38,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:39:38,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:39:38,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3761c6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:38, skipping insertion in model container [2022-11-03 02:39:38,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:39:38" (1/1) ... [2022-11-03 02:39:38,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:39:38,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:39:40,765 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2022-11-03 02:39:40,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:39:40,830 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:39:41,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2022-11-03 02:39:41,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:39:41,334 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:39:41,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41 WrapperNode [2022-11-03 02:39:41,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:39:41,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:39:41,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:39:41,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:39:41,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:41,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:42,073 INFO L138 Inliner]: procedures = 306, calls = 1441, calls flagged for inlining = 179, calls inlined = 169, statements flattened = 3989 [2022-11-03 02:39:42,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:39:42,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:39:42,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:39:42,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:39:42,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:42,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:42,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:42,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:42,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:42,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:42,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:42,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:43,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:39:43,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:39:43,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:39:43,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:39:43,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (1/1) ... [2022-11-03 02:39:43,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:39:43,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:43,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:39:43,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:39:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:39:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:39:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:39:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:39:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:39:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:39:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:39:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:39:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-03 02:39:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-03 02:39:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:39:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:39:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2022-11-03 02:39:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2022-11-03 02:39:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:39:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:39:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-03 02:39:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-03 02:39:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:39:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:39:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2022-11-03 02:39:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2022-11-03 02:39:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-03 02:39:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-03 02:39:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-03 02:39:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-03 02:39:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2022-11-03 02:39:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2022-11-03 02:39:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:39:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:39:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:39:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:39:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:39:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:39:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2022-11-03 02:39:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2022-11-03 02:39:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2022-11-03 02:39:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2022-11-03 02:39:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:39:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:39:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2022-11-03 02:39:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2022-11-03 02:39:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-11-03 02:39:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-11-03 02:39:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:39:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:39:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-03 02:39:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-03 02:39:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-03 02:39:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-03 02:39:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:39:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:39:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:39:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:39:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:39:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:39:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2022-11-03 02:39:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2022-11-03 02:39:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:39:43,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:39:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:39:43,142 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:39:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-03 02:39:43,142 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-03 02:39:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:39:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:39:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 02:39:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 02:39:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:39:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2022-11-03 02:39:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2022-11-03 02:39:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:39:43,145 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:39:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2022-11-03 02:39:43,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2022-11-03 02:39:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:39:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:39:43,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:39:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2022-11-03 02:39:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2022-11-03 02:39:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2022-11-03 02:39:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2022-11-03 02:39:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 02:39:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 02:39:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:39:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2022-11-03 02:39:43,148 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2022-11-03 02:39:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-03 02:39:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-03 02:39:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:39:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:39:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-03 02:39:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-03 02:39:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:39:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:39:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2022-11-03 02:39:43,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2022-11-03 02:39:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2022-11-03 02:39:43,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2022-11-03 02:39:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:39:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2022-11-03 02:39:43,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2022-11-03 02:39:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2022-11-03 02:39:43,152 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2022-11-03 02:39:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:39:43,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:39:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2022-11-03 02:39:43,153 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2022-11-03 02:39:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:39:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:39:43,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:39:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:39:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:39:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-03 02:39:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-03 02:39:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-03 02:39:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-03 02:39:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2022-11-03 02:39:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2022-11-03 02:39:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:39:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:39:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:39:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:39:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:39:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-03 02:39:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-03 02:39:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:39:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:39:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:39:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:39:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2022-11-03 02:39:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2022-11-03 02:39:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:39:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:39:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2022-11-03 02:39:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2022-11-03 02:39:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:39:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:39:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-03 02:39:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-03 02:39:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:39:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:39:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:39:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:39:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2022-11-03 02:39:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2022-11-03 02:39:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2022-11-03 02:39:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2022-11-03 02:39:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:39:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-03 02:39:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-03 02:39:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2022-11-03 02:39:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2022-11-03 02:39:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 02:39:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 02:39:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:39:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:39:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:39:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:39:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:39:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:39:43,983 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:39:43,986 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:39:44,504 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:41:51,778 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:41:53,072 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:42:39,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:42:39,995 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:42:39,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:42:39 BoogieIcfgContainer [2022-11-03 02:42:39,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:42:40,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:42:40,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:42:40,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:42:40,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:39:38" (1/3) ... [2022-11-03 02:42:40,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ac3e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:42:40, skipping insertion in model container [2022-11-03 02:42:40,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:41" (2/3) ... [2022-11-03 02:42:40,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ac3e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:42:40, skipping insertion in model container [2022-11-03 02:42:40,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:42:39" (3/3) ... [2022-11-03 02:42:40,009 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-03 02:42:40,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:42:40,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:42:40,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:42:40,112 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;@600247e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:42:40,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:42:40,120 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) [2022-11-03 02:42:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 02:42:40,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:40,141 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] [2022-11-03 02:42:40,142 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] === [2022-11-03 02:42:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash 665387139, now seen corresponding path program 1 times [2022-11-03 02:42:40,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:40,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920754794] [2022-11-03 02:42:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:40,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-03 02:42:41,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:41,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920754794] [2022-11-03 02:42:41,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920754794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:41,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:41,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:42:41,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581872330] [2022-11-03 02:42:41,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:41,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:42:41,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:42:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:41,889 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) [2022-11-03 02:42:44,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:48,635 INFO L93 Difference]: Finished difference Result 3072 states and 4472 transitions. [2022-11-03 02:42:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:48,637 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 [2022-11-03 02:42:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:48,670 INFO L225 Difference]: With dead ends: 3072 [2022-11-03 02:42:48,670 INFO L226 Difference]: Without dead ends: 2017 [2022-11-03 02:42:48,684 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 [2022-11-03 02:42:48,688 INFO L413 NwaCegarLoop]: 1609 mSDtfsCounter, 1437 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:48,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2868 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 502 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:42:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-11-03 02:42:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2022-11-03 02:42:48,906 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) [2022-11-03 02:42:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2916 transitions. [2022-11-03 02:42:48,932 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2916 transitions. Word has length 135 [2022-11-03 02:42:48,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:48,934 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 2916 transitions. [2022-11-03 02:42:48,934 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) [2022-11-03 02:42:48,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2916 transitions. [2022-11-03 02:42:48,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-03 02:42:48,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:48,963 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] [2022-11-03 02:42:48,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:42:48,964 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] === [2022-11-03 02:42:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1537557482, now seen corresponding path program 1 times [2022-11-03 02:42:48,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:48,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925583489] [2022-11-03 02:42:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:42:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-03 02:42:50,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:42:50,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925583489] [2022-11-03 02:42:50,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925583489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:50,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:50,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:42:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814330047] [2022-11-03 02:42:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:50,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:42:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:42:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:42:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:42:50,622 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) [2022-11-03 02:42:52,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:59,534 INFO L93 Difference]: Finished difference Result 4015 states and 5841 transitions. [2022-11-03 02:42:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:42:59,535 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 [2022-11-03 02:42:59,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:59,570 INFO L225 Difference]: With dead ends: 4015 [2022-11-03 02:42:59,571 INFO L226 Difference]: Without dead ends: 4011 [2022-11-03 02:42:59,575 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 [2022-11-03 02:42:59,576 INFO L413 NwaCegarLoop]: 1676 mSDtfsCounter, 1466 mSDsluCounter, 5351 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:59,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 6287 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1010 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:42:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-11-03 02:42:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 4007. [2022-11-03 02:42:59,809 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) [2022-11-03 02:42:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5834 transitions. [2022-11-03 02:42:59,841 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5834 transitions. Word has length 178 [2022-11-03 02:42:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:59,844 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 5834 transitions. [2022-11-03 02:42:59,844 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) [2022-11-03 02:42:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5834 transitions. [2022-11-03 02:42:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-03 02:42:59,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:59,853 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 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] [2022-11-03 02:42:59,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:42:59,854 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] === [2022-11-03 02:42:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash 707600207, now seen corresponding path program 1 times [2022-11-03 02:42:59,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:42:59,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077662786] [2022-11-03 02:42:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:43:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-03 02:43:01,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:43:01,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077662786] [2022-11-03 02:43:01,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077662786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:01,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:01,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:43:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199338423] [2022-11-03 02:43:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:01,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:43:01,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:43:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:43:01,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:43:01,288 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) [2022-11-03 02:43:03,370 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 [] [2022-11-03 02:43:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:08,820 INFO L93 Difference]: Finished difference Result 4013 states and 5839 transitions. [2022-11-03 02:43:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:43:08,821 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 184 [2022-11-03 02:43:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:08,852 INFO L225 Difference]: With dead ends: 4013 [2022-11-03 02:43:08,852 INFO L226 Difference]: Without dead ends: 3984 [2022-11-03 02:43:08,857 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 [2022-11-03 02:43:08,858 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 1463 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3813 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:08,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 3813 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 723 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-03 02:43:08,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2022-11-03 02:43:09,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3984. [2022-11-03 02:43:09,079 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) [2022-11-03 02:43:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5802 transitions. [2022-11-03 02:43:09,110 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5802 transitions. Word has length 184 [2022-11-03 02:43:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:09,112 INFO L495 AbstractCegarLoop]: Abstraction has 3984 states and 5802 transitions. [2022-11-03 02:43:09,112 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) [2022-11-03 02:43:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5802 transitions. [2022-11-03 02:43:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-03 02:43:09,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:09,137 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 5, 5, 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] [2022-11-03 02:43:09,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:43:09,137 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] === [2022-11-03 02:43:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1313520947, now seen corresponding path program 1 times [2022-11-03 02:43:09,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:43:09,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819902196] [2022-11-03 02:43:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:09,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:43:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-11-03 02:43:10,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:43:10,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819902196] [2022-11-03 02:43:10,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819902196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:10,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:10,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:43:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027322514] [2022-11-03 02:43:10,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:10,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:43:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:43:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:43:10,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:43:10,345 INFO L87 Difference]: Start difference. First operand 3984 states and 5802 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-11-03 02:43:12,420 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 [] [2022-11-03 02:43:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:17,334 INFO L93 Difference]: Finished difference Result 11470 states and 16658 transitions. [2022-11-03 02:43:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:43:17,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 268 [2022-11-03 02:43:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:17,403 INFO L225 Difference]: With dead ends: 11470 [2022-11-03 02:43:17,403 INFO L226 Difference]: Without dead ends: 7509 [2022-11-03 02:43:17,433 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 [2022-11-03 02:43:17,434 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1237 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:17,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 2768 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 562 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:43:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2022-11-03 02:43:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 7493. [2022-11-03 02:43:17,942 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) [2022-11-03 02:43:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7493 states to 7493 states and 10763 transitions. [2022-11-03 02:43:17,984 INFO L78 Accepts]: Start accepts. Automaton has 7493 states and 10763 transitions. Word has length 268 [2022-11-03 02:43:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:17,984 INFO L495 AbstractCegarLoop]: Abstraction has 7493 states and 10763 transitions. [2022-11-03 02:43:17,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-11-03 02:43:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7493 states and 10763 transitions. [2022-11-03 02:43:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-03 02:43:18,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:18,021 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] [2022-11-03 02:43:18,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:43:18,022 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] === [2022-11-03 02:43:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1884191834, now seen corresponding path program 1 times [2022-11-03 02:43:18,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:43:18,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737933911] [2022-11-03 02:43:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:18,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:43:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-03 02:43:18,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:43:18,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737933911] [2022-11-03 02:43:18,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737933911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:18,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:18,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:43:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608013005] [2022-11-03 02:43:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:18,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:43:18,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:43:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:43:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:43:18,839 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) [2022-11-03 02:43:20,910 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 [] [2022-11-03 02:43:25,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:25,468 INFO L93 Difference]: Finished difference Result 16615 states and 23779 transitions. [2022-11-03 02:43:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:43:25,469 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 [2022-11-03 02:43:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:25,532 INFO L225 Difference]: With dead ends: 16615 [2022-11-03 02:43:25,532 INFO L226 Difference]: Without dead ends: 9145 [2022-11-03 02:43:25,565 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 [2022-11-03 02:43:25,566 INFO L413 NwaCegarLoop]: 1682 mSDtfsCounter, 1354 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:25,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 2926 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-03 02:43:25,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2022-11-03 02:43:26,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 9129. [2022-11-03 02:43:26,076 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) [2022-11-03 02:43:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9129 states to 9129 states and 12975 transitions. [2022-11-03 02:43:26,122 INFO L78 Accepts]: Start accepts. Automaton has 9129 states and 12975 transitions. Word has length 284 [2022-11-03 02:43:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:26,123 INFO L495 AbstractCegarLoop]: Abstraction has 9129 states and 12975 transitions. [2022-11-03 02:43:26,123 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) [2022-11-03 02:43:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 9129 states and 12975 transitions. [2022-11-03 02:43:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-03 02:43:26,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:26,154 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] [2022-11-03 02:43:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:43:26,154 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] === [2022-11-03 02:43:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash 167962339, now seen corresponding path program 1 times [2022-11-03 02:43:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:43:26,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846777679] [2022-11-03 02:43:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:43:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-11-03 02:43:27,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:43:27,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846777679] [2022-11-03 02:43:27,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846777679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:27,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:27,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:43:27,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877502782] [2022-11-03 02:43:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:27,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:43:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:43:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:43:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:43:27,044 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) [2022-11-03 02:43:29,133 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 [] [2022-11-03 02:43:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:34,113 INFO L93 Difference]: Finished difference Result 25383 states and 36106 transitions. [2022-11-03 02:43:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:43:34,113 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 [2022-11-03 02:43:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:34,208 INFO L225 Difference]: With dead ends: 25383 [2022-11-03 02:43:34,208 INFO L226 Difference]: Without dead ends: 16277 [2022-11-03 02:43:34,251 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 [2022-11-03 02:43:34,252 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 1389 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:34,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 2910 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 525 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 02:43:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16277 states. [2022-11-03 02:43:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16277 to 16259. [2022-11-03 02:43:35,262 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) [2022-11-03 02:43:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16259 states to 16259 states and 23058 transitions. [2022-11-03 02:43:35,344 INFO L78 Accepts]: Start accepts. Automaton has 16259 states and 23058 transitions. Word has length 265 [2022-11-03 02:43:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:35,345 INFO L495 AbstractCegarLoop]: Abstraction has 16259 states and 23058 transitions. [2022-11-03 02:43:35,345 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) [2022-11-03 02:43:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 16259 states and 23058 transitions. [2022-11-03 02:43:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-03 02:43:35,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:35,394 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] [2022-11-03 02:43:35,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:43:35,395 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] === [2022-11-03 02:43:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:35,395 INFO L85 PathProgramCache]: Analyzing trace with hash -756765806, now seen corresponding path program 1 times [2022-11-03 02:43:35,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:43:35,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832589187] [2022-11-03 02:43:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:35,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:43:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-11-03 02:43:36,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:43:36,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832589187] [2022-11-03 02:43:36,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832589187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:36,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:36,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:43:36,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247187329] [2022-11-03 02:43:36,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:43:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:43:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:43:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:43:36,181 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) [2022-11-03 02:43:38,251 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 [] [2022-11-03 02:43:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:43,935 INFO L93 Difference]: Finished difference Result 38165 states and 54242 transitions. [2022-11-03 02:43:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:43:43,936 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 [2022-11-03 02:43:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:44,097 INFO L225 Difference]: With dead ends: 38165 [2022-11-03 02:43:44,097 INFO L226 Difference]: Without dead ends: 23473 [2022-11-03 02:43:44,171 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 [2022-11-03 02:43:44,176 INFO L413 NwaCegarLoop]: 2269 mSDtfsCounter, 1404 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:44,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 3518 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 651 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:43:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23473 states. [2022-11-03 02:43:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23473 to 23455. [2022-11-03 02:43:45,592 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) [2022-11-03 02:43:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 33258 transitions. [2022-11-03 02:43:45,718 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 33258 transitions. Word has length 270 [2022-11-03 02:43:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:45,719 INFO L495 AbstractCegarLoop]: Abstraction has 23455 states and 33258 transitions. [2022-11-03 02:43:45,719 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) [2022-11-03 02:43:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 33258 transitions. [2022-11-03 02:43:45,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-03 02:43:45,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:45,794 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] [2022-11-03 02:43:45,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:43:45,796 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] === [2022-11-03 02:43:45,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:45,797 INFO L85 PathProgramCache]: Analyzing trace with hash 146648034, now seen corresponding path program 1 times [2022-11-03 02:43:45,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:43:45,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179408740] [2022-11-03 02:43:45,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:45,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:43:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-11-03 02:43:46,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:43:46,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179408740] [2022-11-03 02:43:46,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179408740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:46,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:46,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:43:46,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479689144] [2022-11-03 02:43:46,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:46,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:43:46,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:43:46,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:43:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:43:46,564 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) [2022-11-03 02:43:48,637 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 [] [2022-11-03 02:43:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:53,891 INFO L93 Difference]: Finished difference Result 64471 states and 91240 transitions. [2022-11-03 02:43:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:43:53,892 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 [2022-11-03 02:43:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:54,160 INFO L225 Difference]: With dead ends: 64471 [2022-11-03 02:43:54,160 INFO L226 Difference]: Without dead ends: 41039 [2022-11-03 02:43:54,264 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 [2022-11-03 02:43:54,265 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1339 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:54,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3147 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 559 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 02:43:54,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41039 states. [2022-11-03 02:43:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41039 to 40983. [2022-11-03 02:43:56,608 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) [2022-11-03 02:43:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40983 states to 40983 states and 57711 transitions. [2022-11-03 02:43:56,820 INFO L78 Accepts]: Start accepts. Automaton has 40983 states and 57711 transitions. Word has length 282 [2022-11-03 02:43:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:56,821 INFO L495 AbstractCegarLoop]: Abstraction has 40983 states and 57711 transitions. [2022-11-03 02:43:56,821 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) [2022-11-03 02:43:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand 40983 states and 57711 transitions. [2022-11-03 02:43:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-03 02:43:56,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:56,899 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] [2022-11-03 02:43:56,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:43:56,900 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] === [2022-11-03 02:43:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1286135543, now seen corresponding path program 1 times [2022-11-03 02:43:56,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:43:56,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218610231] [2022-11-03 02:43:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:56,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:43:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2022-11-03 02:43:57,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:43:57,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218610231] [2022-11-03 02:43:57,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218610231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:57,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:57,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:43:57,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892180200] [2022-11-03 02:43:57,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:57,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:43:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:43:57,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:43:57,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:43:57,682 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) [2022-11-03 02:43:59,765 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 [] [2022-11-03 02:44:07,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:07,875 INFO L93 Difference]: Finished difference Result 100571 states and 141761 transitions. [2022-11-03 02:44:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:44:07,876 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 [2022-11-03 02:44:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:08,244 INFO L225 Difference]: With dead ends: 100571 [2022-11-03 02:44:08,244 INFO L226 Difference]: Without dead ends: 60035 [2022-11-03 02:44:08,636 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 [2022-11-03 02:44:08,639 INFO L413 NwaCegarLoop]: 2428 mSDtfsCounter, 1382 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:08,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 3670 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 02:44:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60035 states. [2022-11-03 02:44:11,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60035 to 59979. [2022-11-03 02:44:11,698 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) [2022-11-03 02:44:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59979 states to 59979 states and 84364 transitions. [2022-11-03 02:44:12,019 INFO L78 Accepts]: Start accepts. Automaton has 59979 states and 84364 transitions. Word has length 294 [2022-11-03 02:44:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:12,020 INFO L495 AbstractCegarLoop]: Abstraction has 59979 states and 84364 transitions. [2022-11-03 02:44:12,020 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) [2022-11-03 02:44:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 59979 states and 84364 transitions. [2022-11-03 02:44:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-03 02:44:12,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:12,128 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 7, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:12,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:44:12,128 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] === [2022-11-03 02:44:12,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1666081791, now seen corresponding path program 1 times [2022-11-03 02:44:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:12,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914816238] [2022-11-03 02:44:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-11-03 02:44:13,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:13,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914816238] [2022-11-03 02:44:13,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914816238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:44:13,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501465232] [2022-11-03 02:44:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:13,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:13,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:44:13,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e4c6c6-b789-4c8f-af2b-1f630e27871d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:44:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:16,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 4038 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:44:16,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2022-11-03 02:44:17,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:17,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501465232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:17,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:44:17,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:44:17,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354779326] [2022-11-03 02:44:17,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:17,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:44:17,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:17,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:44:17,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:44:17,199 INFO L87 Difference]: Start difference. First operand 59979 states and 84364 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-11-03 02:44:19,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:44:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:27,256 INFO L93 Difference]: Finished difference Result 147279 states and 207244 transitions. [2022-11-03 02:44:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:44:27,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 298 [2022-11-03 02:44:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:27,820 INFO L225 Difference]: With dead ends: 147279 [2022-11-03 02:44:27,821 INFO L226 Difference]: Without dead ends: 87747 [2022-11-03 02:44:28,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:44:28,069 INFO L413 NwaCegarLoop]: 1875 mSDtfsCounter, 1383 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:28,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 3106 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 556 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 02:44:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87747 states.