./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 8393723b 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_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/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_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS --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-8393723 [2022-11-19 08:05:43,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:05:43,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:05:43,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:05:43,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:05:43,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:05:43,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:05:43,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:05:43,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:05:43,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:05:43,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:05:43,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:05:43,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:05:43,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:05:43,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:05:43,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:05:43,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:05:43,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:05:43,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:05:43,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:05:43,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:05:43,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:05:43,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:05:43,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:05:43,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:05:43,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:05:43,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:05:43,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:05:43,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:05:43,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:05:43,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:05:43,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:05:43,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:05:43,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:05:43,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:05:43,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:05:43,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:05:43,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:05:43,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:05:43,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:05:43,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:05:43,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:05:43,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:05:43,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:05:43,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:05:43,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:05:43,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:05:43,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:05:43,325 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:05:43,325 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:05:43,325 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:05:43,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:05:43,326 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:05:43,326 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:05:43,326 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:05:43,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:05:43,327 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:05:43,327 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:05:43,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:05:43,328 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:05:43,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:05:43,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:05:43,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:05:43,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:05:43,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:05:43,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:05:43,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:05:43,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:05:43,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:05:43,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:05:43,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:05:43,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:05:43,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:05:43,333 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:05:43,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:05:43,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:05:43,334 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:05:43,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:05:43,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:05:43,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:05:43,335 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_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 [2022-11-19 08:05:43,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:05:43,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:05:43,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:05:43,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:05:43,658 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:05:43,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-19 08:05:43,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/data/535c99166/ba07233514e14a4783336876a3922d1f/FLAG020cd3302 [2022-11-19 08:05:44,626 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:05:44,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-19 08:05:44,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/data/535c99166/ba07233514e14a4783336876a3922d1f/FLAG020cd3302 [2022-11-19 08:05:45,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/data/535c99166/ba07233514e14a4783336876a3922d1f [2022-11-19 08:05:45,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:05:45,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:05:45,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:05:45,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:05:45,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:05:45,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:45" (1/1) ... [2022-11-19 08:05:45,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4919ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:45, skipping insertion in model container [2022-11-19 08:05:45,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:45" (1/1) ... [2022-11-19 08:05:45,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:05:45,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:05:47,526 WARN L234 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_d72ccf8d-c403-4637-827e-d95b53135047/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2022-11-19 08:05:47,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:05:47,637 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:05:48,083 WARN L234 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_d72ccf8d-c403-4637-827e-d95b53135047/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2022-11-19 08:05:48,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:05:48,186 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:05:48,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48 WrapperNode [2022-11-19 08:05:48,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:05:48,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:05:48,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:05:48,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:05:48,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,502 INFO L138 Inliner]: procedures = 306, calls = 1481, calls flagged for inlining = 179, calls inlined = 169, statements flattened = 4107 [2022-11-19 08:05:48,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:05:48,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:05:48,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:05:48,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:05:48,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:05:48,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:05:48,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:05:48,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:05:48,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (1/1) ... [2022-11-19 08:05:48,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:05:48,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:48,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:05:48,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:05:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:05:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:05:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:05:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:05:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:05:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:05:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 08:05:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 08:05:48,865 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-19 08:05:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-19 08:05:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:05:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:05:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2022-11-19 08:05:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2022-11-19 08:05:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 08:05:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 08:05:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-19 08:05:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-19 08:05:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 08:05:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 08:05:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2022-11-19 08:05:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2022-11-19 08:05:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-19 08:05:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-19 08:05:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-19 08:05:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-19 08:05:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2022-11-19 08:05:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2022-11-19 08:05:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:05:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:05:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:05:48,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:05:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:05:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:05:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2022-11-19 08:05:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2022-11-19 08:05:48,870 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2022-11-19 08:05:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2022-11-19 08:05:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:05:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:05:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2022-11-19 08:05:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2022-11-19 08:05:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-11-19 08:05:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-11-19 08:05:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:05:48,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:05:48,874 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-19 08:05:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-19 08:05:48,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-19 08:05:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-19 08:05:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 08:05:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 08:05:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:05:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:05:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:05:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:05:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2022-11-19 08:05:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2022-11-19 08:05:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:05:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:05:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:05:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:05:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-19 08:05:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-19 08:05:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 08:05:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 08:05:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-19 08:05:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-19 08:05:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:05:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2022-11-19 08:05:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2022-11-19 08:05:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:05:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:05:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2022-11-19 08:05:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2022-11-19 08:05:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:05:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:05:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:05:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2022-11-19 08:05:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2022-11-19 08:05:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2022-11-19 08:05:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2022-11-19 08:05:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 08:05:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 08:05:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:05:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2022-11-19 08:05:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2022-11-19 08:05:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-19 08:05:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-19 08:05:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:05:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:05:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-19 08:05:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2022-11-19 08:05:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 08:05:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 08:05:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2022-11-19 08:05:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2022-11-19 08:05:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2022-11-19 08:05:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2022-11-19 08:05:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:05:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2022-11-19 08:05:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2022-11-19 08:05:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2022-11-19 08:05:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2022-11-19 08:05:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:05:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:05:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2022-11-19 08:05:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2022-11-19 08:05:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:05:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 08:05:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 08:05:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:05:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:05:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-19 08:05:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-19 08:05:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-19 08:05:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-19 08:05:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2022-11-19 08:05:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2022-11-19 08:05:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:05:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:05:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:05:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:05:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:05:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:05:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-19 08:05:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-19 08:05:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:05:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:05:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:05:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:05:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2022-11-19 08:05:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2022-11-19 08:05:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 08:05:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 08:05:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2022-11-19 08:05:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2022-11-19 08:05:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:05:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:05:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-19 08:05:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-19 08:05:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:05:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:05:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:05:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:05:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2022-11-19 08:05:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2022-11-19 08:05:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2022-11-19 08:05:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2022-11-19 08:05:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:05:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-19 08:05:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-19 08:05:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2022-11-19 08:05:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2022-11-19 08:05:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-19 08:05:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-19 08:05:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:05:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:05:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:05:48,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:05:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:05:48,911 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:05:49,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:05:49,752 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:05:50,468 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:06:53,595 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:06:54,972 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:06:57,127 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:06:57,128 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:06:57,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:57 BoogieIcfgContainer [2022-11-19 08:06:57,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:06:57,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:06:57,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:06:57,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:06:57,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:45" (1/3) ... [2022-11-19 08:06:57,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320e0efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:57, skipping insertion in model container [2022-11-19 08:06:57,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:48" (2/3) ... [2022-11-19 08:06:57,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320e0efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:57, skipping insertion in model container [2022-11-19 08:06:57,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:57" (3/3) ... [2022-11-19 08:06:57,144 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2022-11-19 08:06:57,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:06:57,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:06:57,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:06:57,323 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;@32448be5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:06:57,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:06:57,337 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) [2022-11-19 08:06:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-19 08:06:57,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:57,375 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] [2022-11-19 08:06:57,376 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] === [2022-11-19 08:06:57,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:57,382 INFO L85 PathProgramCache]: Analyzing trace with hash 814290345, now seen corresponding path program 1 times [2022-11-19 08:06:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:57,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609001593] [2022-11-19 08:06:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:57,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:06:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-19 08:06:59,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:06:59,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609001593] [2022-11-19 08:06:59,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609001593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:06:59,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:06:59,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:06:59,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781415693] [2022-11-19 08:06:59,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:06:59,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:06:59,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:59,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:06:59,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:06:59,067 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) [2022-11-19 08:07:01,160 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 [] [2022-11-19 08:07:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:05,458 INFO L93 Difference]: Finished difference Result 3072 states and 4472 transitions. [2022-11-19 08:07:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:05,461 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 [2022-11-19 08:07:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:05,521 INFO L225 Difference]: With dead ends: 3072 [2022-11-19 08:07:05,521 INFO L226 Difference]: Without dead ends: 2017 [2022-11-19 08:07:05,535 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 [2022-11-19 08:07:05,539 INFO L413 NwaCegarLoop]: 1609 mSDtfsCounter, 1437 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s 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, 6.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:05,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2868 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 502 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-19 08:07:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-11-19 08:07:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2022-11-19 08:07:05,789 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) [2022-11-19 08:07:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2916 transitions. [2022-11-19 08:07:05,816 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2916 transitions. Word has length 135 [2022-11-19 08:07:05,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:05,818 INFO L495 AbstractCegarLoop]: Abstraction has 2017 states and 2916 transitions. [2022-11-19 08:07:05,819 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) [2022-11-19 08:07:05,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2916 transitions. [2022-11-19 08:07:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-19 08:07:05,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:05,844 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] [2022-11-19 08:07:05,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:07:05,845 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] === [2022-11-19 08:07:05,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:05,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1312621556, now seen corresponding path program 1 times [2022-11-19 08:07:05,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:05,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860658335] [2022-11-19 08:07:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:05,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-19 08:07:07,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:07,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860658335] [2022-11-19 08:07:07,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860658335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:07,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:07,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:07:07,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541059715] [2022-11-19 08:07:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:07,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:07:07,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:07,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:07:07,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:07,777 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) [2022-11-19 08:07:09,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:07:16,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:07:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:18,294 INFO L93 Difference]: Finished difference Result 4015 states and 5841 transitions. [2022-11-19 08:07:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:07:18,295 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 [2022-11-19 08:07:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:18,327 INFO L225 Difference]: With dead ends: 4015 [2022-11-19 08:07:18,327 INFO L226 Difference]: Without dead ends: 4011 [2022-11-19 08:07:18,331 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 [2022-11-19 08:07:18,332 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 1466 mSDsluCounter, 4607 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 6281 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:18,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 6281 Invalid, 1020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1016 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-19 08:07:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-11-19 08:07:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 4007. [2022-11-19 08:07:18,554 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) [2022-11-19 08:07:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5834 transitions. [2022-11-19 08:07:18,593 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5834 transitions. Word has length 178 [2022-11-19 08:07:18,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:18,595 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 5834 transitions. [2022-11-19 08:07:18,596 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) [2022-11-19 08:07:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5834 transitions. [2022-11-19 08:07:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-19 08:07:18,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:18,605 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:18,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:07:18,606 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] === [2022-11-19 08:07:18,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1840161608, now seen corresponding path program 1 times [2022-11-19 08:07:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:18,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188434498] [2022-11-19 08:07:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-19 08:07:20,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188434498] [2022-11-19 08:07:20,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188434498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:20,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:20,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:07:20,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099620358] [2022-11-19 08:07:20,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:20,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:07:20,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:20,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:07:20,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:20,184 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) [2022-11-19 08:07:22,260 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 [] [2022-11-19 08:07:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:28,329 INFO L93 Difference]: Finished difference Result 4013 states and 5839 transitions. [2022-11-19 08:07:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:07:28,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 183 [2022-11-19 08:07:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:28,364 INFO L225 Difference]: With dead ends: 4013 [2022-11-19 08:07:28,365 INFO L226 Difference]: Without dead ends: 3984 [2022-11-19 08:07:28,370 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 [2022-11-19 08:07:28,377 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 1463 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s 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, 7.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:28,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 3813 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 723 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-19 08:07:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2022-11-19 08:07:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3984. [2022-11-19 08:07:28,733 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) [2022-11-19 08:07:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5802 transitions. [2022-11-19 08:07:28,774 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5802 transitions. Word has length 183 [2022-11-19 08:07:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:28,776 INFO L495 AbstractCegarLoop]: Abstraction has 3984 states and 5802 transitions. [2022-11-19 08:07:28,777 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) [2022-11-19 08:07:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5802 transitions. [2022-11-19 08:07:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-19 08:07:28,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:28,805 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:28,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:07:28,805 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] === [2022-11-19 08:07:28,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash 15510845, now seen corresponding path program 1 times [2022-11-19 08:07:28,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:28,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476147669] [2022-11-19 08:07:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:28,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-11-19 08:07:29,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:29,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476147669] [2022-11-19 08:07:29,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476147669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:29,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:29,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:07:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270831274] [2022-11-19 08:07:29,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:29,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:29,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:29,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:29,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:07:29,967 INFO L87 Difference]: Start difference. First operand 3984 states and 5802 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 08:07:32,047 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 [] [2022-11-19 08:07:37,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:37,112 INFO L93 Difference]: Finished difference Result 11470 states and 16658 transitions. [2022-11-19 08:07:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:37,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 272 [2022-11-19 08:07:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:37,179 INFO L225 Difference]: With dead ends: 11470 [2022-11-19 08:07:37,179 INFO L226 Difference]: Without dead ends: 7509 [2022-11-19 08:07:37,203 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 [2022-11-19 08:07:37,204 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1234 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:37,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2769 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 562 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-19 08:07:37,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2022-11-19 08:07:37,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 7493. [2022-11-19 08:07:37,758 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) [2022-11-19 08:07:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7493 states to 7493 states and 10763 transitions. [2022-11-19 08:07:37,803 INFO L78 Accepts]: Start accepts. Automaton has 7493 states and 10763 transitions. Word has length 272 [2022-11-19 08:07:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:37,804 INFO L495 AbstractCegarLoop]: Abstraction has 7493 states and 10763 transitions. [2022-11-19 08:07:37,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 08:07:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 7493 states and 10763 transitions. [2022-11-19 08:07:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-19 08:07:37,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:37,836 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] [2022-11-19 08:07:37,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:07:37,837 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] === [2022-11-19 08:07:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash 643674347, now seen corresponding path program 1 times [2022-11-19 08:07:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:37,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357047584] [2022-11-19 08:07:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:37,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2022-11-19 08:07:38,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357047584] [2022-11-19 08:07:38,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357047584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:38,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:38,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:07:38,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551873425] [2022-11-19 08:07:38,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:38,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:38,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:38,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:38,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:07:38,639 INFO L87 Difference]: Start difference. First operand 7493 states and 10763 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, (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) [2022-11-19 08:07:40,726 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 [] [2022-11-19 08:07:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:45,350 INFO L93 Difference]: Finished difference Result 16615 states and 23779 transitions. [2022-11-19 08:07:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:45,351 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, (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 [2022-11-19 08:07:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:45,420 INFO L225 Difference]: With dead ends: 16615 [2022-11-19 08:07:45,420 INFO L226 Difference]: Without dead ends: 9145 [2022-11-19 08:07:45,462 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 [2022-11-19 08:07:45,462 INFO L413 NwaCegarLoop]: 1682 mSDtfsCounter, 1377 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 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 [2022-11-19 08:07:45,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 2926 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 08:07:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9145 states. [2022-11-19 08:07:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9145 to 9129. [2022-11-19 08:07:46,095 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) [2022-11-19 08:07:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9129 states to 9129 states and 12975 transitions. [2022-11-19 08:07:46,144 INFO L78 Accepts]: Start accepts. Automaton has 9129 states and 12975 transitions. Word has length 284 [2022-11-19 08:07:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:46,145 INFO L495 AbstractCegarLoop]: Abstraction has 9129 states and 12975 transitions. [2022-11-19 08:07:46,146 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, (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) [2022-11-19 08:07:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9129 states and 12975 transitions. [2022-11-19 08:07:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-19 08:07:46,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:46,176 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, 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] [2022-11-19 08:07:46,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:07:46,176 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] === [2022-11-19 08:07:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:46,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1726133790, now seen corresponding path program 1 times [2022-11-19 08:07:46,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:46,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035564823] [2022-11-19 08:07:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:46,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-11-19 08:07:46,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:46,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035564823] [2022-11-19 08:07:46,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035564823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:46,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:46,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:07:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255363195] [2022-11-19 08:07:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:46,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:07:46,918 INFO L87 Difference]: Start difference. First operand 9129 states and 12975 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-19 08:07:48,996 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 [] [2022-11-19 08:07:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:54,053 INFO L93 Difference]: Finished difference Result 25383 states and 36106 transitions. [2022-11-19 08:07:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:07:54,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 266 [2022-11-19 08:07:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:54,177 INFO L225 Difference]: With dead ends: 25383 [2022-11-19 08:07:54,177 INFO L226 Difference]: Without dead ends: 16277 [2022-11-19 08:07:54,237 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 [2022-11-19 08:07:54,238 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1412 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:54,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 2909 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 525 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-19 08:07:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16277 states. [2022-11-19 08:07:55,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16277 to 16259. [2022-11-19 08:07:55,544 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) [2022-11-19 08:07:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16259 states to 16259 states and 23058 transitions. [2022-11-19 08:07:55,639 INFO L78 Accepts]: Start accepts. Automaton has 16259 states and 23058 transitions. Word has length 266 [2022-11-19 08:07:55,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:55,642 INFO L495 AbstractCegarLoop]: Abstraction has 16259 states and 23058 transitions. [2022-11-19 08:07:55,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-19 08:07:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 16259 states and 23058 transitions. [2022-11-19 08:07:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-19 08:07:55,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:55,696 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, 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] [2022-11-19 08:07:55,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:07:55,697 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] === [2022-11-19 08:07:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1952207145, now seen corresponding path program 1 times [2022-11-19 08:07:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:55,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947322012] [2022-11-19 08:07:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-11-19 08:07:56,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:07:56,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947322012] [2022-11-19 08:07:56,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947322012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:56,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:56,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:07:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397066944] [2022-11-19 08:07:56,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:56,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:07:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:07:56,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:07:56,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:07:56,511 INFO L87 Difference]: Start difference. First operand 16259 states and 23058 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2022-11-19 08:07:58,579 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 [] [2022-11-19 08:08:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:03,956 INFO L93 Difference]: Finished difference Result 38165 states and 54242 transitions. [2022-11-19 08:08:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:03,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 271 [2022-11-19 08:08:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:04,107 INFO L225 Difference]: With dead ends: 38165 [2022-11-19 08:08:04,107 INFO L226 Difference]: Without dead ends: 23473 [2022-11-19 08:08:04,178 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 [2022-11-19 08:08:04,179 INFO L413 NwaCegarLoop]: 2269 mSDtfsCounter, 1404 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s 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, 6.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:04,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 3518 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 651 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-19 08:08:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23473 states. [2022-11-19 08:08:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23473 to 23455. [2022-11-19 08:08:05,814 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) [2022-11-19 08:08:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 33258 transitions. [2022-11-19 08:08:05,975 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 33258 transitions. Word has length 271 [2022-11-19 08:08:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:05,976 INFO L495 AbstractCegarLoop]: Abstraction has 23455 states and 33258 transitions. [2022-11-19 08:08:05,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2022-11-19 08:08:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 33258 transitions. [2022-11-19 08:08:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-19 08:08:06,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:06,072 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] [2022-11-19 08:08:06,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:08:06,072 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] === [2022-11-19 08:08:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:06,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1057717736, now seen corresponding path program 1 times [2022-11-19 08:08:06,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:08:06,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61681279] [2022-11-19 08:08:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:06,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:08:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2022-11-19 08:08:07,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:08:07,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61681279] [2022-11-19 08:08:07,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61681279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:07,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:08:07,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:08:07,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631967827] [2022-11-19 08:08:07,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:07,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:07,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:08:07,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:08:07,569 INFO L87 Difference]: Start difference. First operand 23455 states and 33258 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-11-19 08:08:09,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:08:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:15,488 INFO L93 Difference]: Finished difference Result 64471 states and 91240 transitions. [2022-11-19 08:08:15,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:15,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 [2022-11-19 08:08:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:15,749 INFO L225 Difference]: With dead ends: 64471 [2022-11-19 08:08:15,749 INFO L226 Difference]: Without dead ends: 41039 [2022-11-19 08:08:15,844 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 [2022-11-19 08:08:15,844 INFO L413 NwaCegarLoop]: 1903 mSDtfsCounter, 1362 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:15,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 3146 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 558 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-19 08:08:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41039 states. [2022-11-19 08:08:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41039 to 40983. [2022-11-19 08:08:18,646 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) [2022-11-19 08:08:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40983 states to 40983 states and 57711 transitions. [2022-11-19 08:08:18,928 INFO L78 Accepts]: Start accepts. Automaton has 40983 states and 57711 transitions. Word has length 282 [2022-11-19 08:08:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:18,929 INFO L495 AbstractCegarLoop]: Abstraction has 40983 states and 57711 transitions. [2022-11-19 08:08:18,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-11-19 08:08:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 40983 states and 57711 transitions. [2022-11-19 08:08:19,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-19 08:08:19,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:19,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:19,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:08:19,038 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] === [2022-11-19 08:08:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash 230858009, now seen corresponding path program 1 times [2022-11-19 08:08:19,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:08:19,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238700147] [2022-11-19 08:08:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:19,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:08:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2022-11-19 08:08:19,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:08:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238700147] [2022-11-19 08:08:19,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238700147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:19,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:08:19,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:08:19,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380700294] [2022-11-19 08:08:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:19,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:08:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:08:19,921 INFO L87 Difference]: Start difference. First operand 40983 states and 57711 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-11-19 08:08:22,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:08:29,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:29,632 INFO L93 Difference]: Finished difference Result 100571 states and 141761 transitions. [2022-11-19 08:08:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:29,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 305 [2022-11-19 08:08:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:30,168 INFO L225 Difference]: With dead ends: 100571 [2022-11-19 08:08:30,168 INFO L226 Difference]: Without dead ends: 60035 [2022-11-19 08:08:30,325 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 [2022-11-19 08:08:30,328 INFO L413 NwaCegarLoop]: 2428 mSDtfsCounter, 1382 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s 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, 6.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:30,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 3670 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-19 08:08:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60035 states. [2022-11-19 08:08:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60035 to 59979. [2022-11-19 08:08:33,848 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) [2022-11-19 08:08:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59979 states to 59979 states and 84364 transitions. [2022-11-19 08:08:34,213 INFO L78 Accepts]: Start accepts. Automaton has 59979 states and 84364 transitions. Word has length 305 [2022-11-19 08:08:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:34,213 INFO L495 AbstractCegarLoop]: Abstraction has 59979 states and 84364 transitions. [2022-11-19 08:08:34,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-11-19 08:08:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 59979 states and 84364 transitions. [2022-11-19 08:08:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-19 08:08:34,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:34,305 INFO L195 NwaCegarLoop]: trace histogram [21, 13, 13, 13, 13, 13, 13, 7, 7, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:34,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:08:34,306 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] === [2022-11-19 08:08:34,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:34,307 INFO L85 PathProgramCache]: Analyzing trace with hash 397688452, now seen corresponding path program 1 times [2022-11-19 08:08:34,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:08:34,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299588469] [2022-11-19 08:08:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:34,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:08:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-11-19 08:08:36,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:08:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299588469] [2022-11-19 08:08:36,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299588469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:08:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933378931] [2022-11-19 08:08:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:36,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:08:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:08:36,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:08:36,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:08:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:38,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 4125 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:08:38,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2022-11-19 08:08:39,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:08:39,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933378931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:39,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:08:39,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 08:08:39,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583829055] [2022-11-19 08:08:39,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:39,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:08:39,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:08:39,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:08:39,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:08:39,073 INFO L87 Difference]: Start difference. First operand 59979 states and 84364 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-19 08:08:41,132 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 [] [2022-11-19 08:08:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:08:49,481 INFO L93 Difference]: Finished difference Result 147279 states and 207244 transitions. [2022-11-19 08:08:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:08:49,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 299 [2022-11-19 08:08:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:08:50,130 INFO L225 Difference]: With dead ends: 147279 [2022-11-19 08:08:50,131 INFO L226 Difference]: Without dead ends: 87747 [2022-11-19 08:08:50,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:08:50,447 INFO L413 NwaCegarLoop]: 1874 mSDtfsCounter, 1383 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:08:50,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 3105 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 555 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-19 08:08:50,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87747 states. [2022-11-19 08:08:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87747 to 87667. [2022-11-19 08:08:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87667 states, 53452 states have (on average 1.2769213499962584) internal successors, (68254), 55924 states have internal predecessors, (68254), 27151 states have call successors, (27151), 7101 states have call predecessors, (27151), 7063 states have return successors, (27693), 25784 states have call predecessors, (27693), 27147 states have call successors, (27693) [2022-11-19 08:08:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87667 states to 87667 states and 123098 transitions. [2022-11-19 08:08:55,726 INFO L78 Accepts]: Start accepts. Automaton has 87667 states and 123098 transitions. Word has length 299 [2022-11-19 08:08:55,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:08:55,727 INFO L495 AbstractCegarLoop]: Abstraction has 87667 states and 123098 transitions. [2022-11-19 08:08:55,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-19 08:08:55,728 INFO L276 IsEmpty]: Start isEmpty. Operand 87667 states and 123098 transitions. [2022-11-19 08:08:55,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-19 08:08:55,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:08:55,852 INFO L195 NwaCegarLoop]: trace histogram [22, 13, 13, 13, 13, 13, 13, 10, 10, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:08:55,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:08:56,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72ccf8d-c403-4637-827e-d95b53135047/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 08:08:56,068 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:08:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:08:56,068 INFO L85 PathProgramCache]: Analyzing trace with hash 262877023, now seen corresponding path program 1 times [2022-11-19 08:08:56,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:08:56,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259416813] [2022-11-19 08:08:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:56,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:08:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1073 trivial. 0 not checked. [2022-11-19 08:08:59,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:08:59,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259416813] [2022-11-19 08:08:59,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259416813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:08:59,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:08:59,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:08:59,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194400949] [2022-11-19 08:08:59,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:08:59,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:08:59,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:08:59,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:08:59,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:08:59,093 INFO L87 Difference]: Start difference. First operand 87667 states and 123098 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-19 08:09:01,172 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 []