./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P --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 3a2c6724f5301da85e20fbddd1914030623487cb494f00194a53042f01a1dafb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:16:20,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:16:20,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:16:20,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:16:20,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:16:20,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:16:20,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:16:20,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:16:20,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:16:20,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:16:20,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:16:20,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:16:20,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:16:20,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:16:20,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:16:20,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:16:20,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:16:20,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:16:20,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:16:20,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:16:20,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:16:20,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:16:20,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:16:20,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:16:20,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:16:20,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:16:20,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:16:20,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:16:20,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:16:20,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:16:20,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:16:20,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:16:20,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:16:20,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:16:20,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:16:20,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:16:20,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:16:20,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:16:20,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:16:20,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:16:20,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:16:20,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:16:20,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:16:20,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:16:20,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:16:20,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:16:20,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:16:20,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:16:20,254 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:16:20,254 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:16:20,254 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:16:20,255 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:16:20,256 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:16:20,256 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:16:20,257 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:16:20,257 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:16:20,257 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:16:20,258 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:16:20,258 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:16:20,258 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:16:20,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:16:20,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:16:20,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:16:20,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:16:20,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:16:20,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:16:20,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:16:20,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:16:20,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:16:20,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:16:20,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:16:20,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:16:20,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:16:20,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:16:20,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:16:20,264 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:16:20,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:16:20,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:16:20,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:16:20,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:16:20,265 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a2c6724f5301da85e20fbddd1914030623487cb494f00194a53042f01a1dafb [2021-11-21 01:16:20,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:16:20,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:16:20,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:16:20,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:16:20,599 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:16:20,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-21 01:16:20,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/data/a42b4701d/c65c850527ee47e8a677005391381c1c/FLAGd084fc239 [2021-11-21 01:16:21,921 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:16:21,922 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-21 01:16:22,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/data/a42b4701d/c65c850527ee47e8a677005391381c1c/FLAGd084fc239 [2021-11-21 01:16:22,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/data/a42b4701d/c65c850527ee47e8a677005391381c1c [2021-11-21 01:16:22,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:16:22,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:16:22,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:16:22,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:16:22,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:16:22,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:16:22" (1/1) ... [2021-11-21 01:16:22,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f09f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:22, skipping insertion in model container [2021-11-21 01:16:22,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:16:22" (1/1) ... [2021-11-21 01:16:22,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:16:22,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:16:25,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[325844,325857] [2021-11-21 01:16:25,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:16:25,933 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:16:26,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[325844,325857] [2021-11-21 01:16:26,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:16:26,802 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:16:26,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26 WrapperNode [2021-11-21 01:16:26,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:16:26,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:16:26,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:16:26,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:16:26,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:26,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,297 INFO L137 Inliner]: procedures = 414, calls = 2180, calls flagged for inlining = 245, calls inlined = 230, statements flattened = 5648 [2021-11-21 01:16:27,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:16:27,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:16:27,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:16:27,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:16:27,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:16:27,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:16:27,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:16:27,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:16:27,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (1/1) ... [2021-11-21 01:16:27,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:16:27,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:16:27,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:16:27,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:16:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:16:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:16:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 01:16:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 01:16:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:16:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:16:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:16:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:16:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2021-11-21 01:16:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2021-11-21 01:16:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-21 01:16:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-21 01:16:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:16:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:16:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:16:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:16:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_hwaddr [2021-11-21 01:16:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_hwaddr [2021-11-21 01:16:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_regs_len [2021-11-21 01:16:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_regs_len [2021-11-21 01:16:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:16:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:16:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2021-11-21 01:16:27,714 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2021-11-21 01:16:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:16:27,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:16:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:16:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:16:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:16:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:16:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:16:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:16:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-21 01:16:27,716 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-21 01:16:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:16:27,716 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:16:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:16:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure macb_remove [2021-11-21 01:16:27,717 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_remove [2021-11-21 01:16:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:16:27,718 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:16:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-21 01:16:27,718 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-21 01:16:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:16:27,719 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:16:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:16:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2021-11-21 01:16:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2021-11-21 01:16:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:16:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:16:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 01:16:27,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 01:16:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:16:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:16:27,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:16:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:16:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:16:27,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:16:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure macb_free_consistent [2021-11-21 01:16:27,724 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_free_consistent [2021-11-21 01:16:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:16:27,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:16:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-21 01:16:27,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-21 01:16:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2021-11-21 01:16:27,727 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2021-11-21 01:16:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:16:27,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:16:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2021-11-21 01:16:27,727 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2021-11-21 01:16:27,728 INFO L130 BoogieDeclarations]: Found specification of procedure macb_resume [2021-11-21 01:16:27,728 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_resume [2021-11-21 01:16:27,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:16:27,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-21 01:16:27,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-21 01:16:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure macb_is_gem [2021-11-21 01:16:27,730 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_is_gem [2021-11-21 01:16:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-21 01:16:27,730 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-21 01:16:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:16:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:16:27,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:16:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure macb_rx_ring_wrap [2021-11-21 01:16:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_rx_ring_wrap [2021-11-21 01:16:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:16:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:16:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:16:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:16:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:16:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-21 01:16:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-21 01:16:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:16:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:16:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:16:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:16:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:16:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:16:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2021-11-21 01:16:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2021-11-21 01:16:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-21 01:16:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-21 01:16:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:16:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:16:27,738 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:16:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:16:27,738 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-21 01:16:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-21 01:16:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:16:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:16:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:16:27,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:16:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-21 01:16:27,745 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-21 01:16:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure phy_find_first [2021-11-21 01:16:27,745 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_find_first [2021-11-21 01:16:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:16:27,746 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:16:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_ring_wrap [2021-11-21 01:16:27,748 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_ring_wrap [2021-11-21 01:16:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2021-11-21 01:16:27,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2021-11-21 01:16:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_hwaddr [2021-11-21 01:16:27,756 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_hwaddr [2021-11-21 01:16:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:16:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:16:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure macb_handle_link_change [2021-11-21 01:16:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_handle_link_change [2021-11-21 01:16:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mii_init [2021-11-21 01:16:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mii_init [2021-11-21 01:16:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_14 [2021-11-21 01:16:27,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_14 [2021-11-21 01:16:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_16 [2021-11-21 01:16:27,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_16 [2021-11-21 01:16:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_15 [2021-11-21 01:16:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_15 [2021-11-21 01:16:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure macb_close [2021-11-21 01:16:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_close [2021-11-21 01:16:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mdc_clk_div [2021-11-21 01:16:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mdc_clk_div [2021-11-21 01:16:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-21 01:16:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-21 01:16:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:16:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:16:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_19 [2021-11-21 01:16:27,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_19 [2021-11-21 01:16:27,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:16:27,761 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2021-11-21 01:16:27,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2021-11-21 01:16:27,761 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-21 01:16:27,762 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-21 01:16:27,762 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:16:27,762 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:16:27,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_21 [2021-11-21 01:16:27,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_21 [2021-11-21 01:16:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:16:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_20 [2021-11-21 01:16:27,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_20 [2021-11-21 01:16:27,763 INFO L130 BoogieDeclarations]: Found specification of procedure clk_get_rate [2021-11-21 01:16:27,763 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_get_rate [2021-11-21 01:16:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:16:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_rx_mode [2021-11-21 01:16:27,764 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_rx_mode [2021-11-21 01:16:27,764 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_desc [2021-11-21 01:16:27,764 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_desc [2021-11-21 01:16:27,765 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:16:27,765 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:16:27,765 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:16:27,766 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:16:27,766 INFO L130 BoogieDeclarations]: Found specification of procedure macb_reset_hw [2021-11-21 01:16:27,766 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_reset_hw [2021-11-21 01:16:27,766 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:16:27,766 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:16:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure macb_suspend [2021-11-21 01:16:27,767 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_suspend [2021-11-21 01:16:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure devm_clk_get [2021-11-21 01:16:27,767 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_clk_get [2021-11-21 01:16:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:16:27,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:16:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure macb_dbw [2021-11-21 01:16:27,768 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_dbw [2021-11-21 01:16:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:16:27,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:16:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 01:16:27,769 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 01:16:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:16:27,769 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:16:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:16:27,769 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:16:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure devm_pinctrl_put [2021-11-21 01:16:27,770 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_pinctrl_put [2021-11-21 01:16:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:16:27,770 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:16:27,770 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:16:27,770 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:16:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:16:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:16:27,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:16:27,771 INFO L130 BoogieDeclarations]: Found specification of procedure gem_rx_refill [2021-11-21 01:16:27,771 INFO L138 BoogieDeclarations]: Found implementation of procedure gem_rx_refill [2021-11-21 01:16:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:16:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:16:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_dma [2021-11-21 01:16:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_dma [2021-11-21 01:16:27,772 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_skb [2021-11-21 01:16:27,772 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_skb [2021-11-21 01:16:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure macb_interrupt [2021-11-21 01:16:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_interrupt [2021-11-21 01:16:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 01:16:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 01:16:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2021-11-21 01:16:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2021-11-21 01:16:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:16:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:16:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2021-11-21 01:16:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2021-11-21 01:16:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-21 01:16:27,775 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-21 01:16:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:16:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:16:27,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:16:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 01:16:27,776 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 01:16:28,816 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:16:28,823 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:16:28,972 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:16:37,697 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:16:39,029 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:16:39,030 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:16:39,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:16:39 BoogieIcfgContainer [2021-11-21 01:16:39,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:16:39,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:16:39,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:16:39,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:16:39,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:16:22" (1/3) ... [2021-11-21 01:16:39,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2cb1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:16:39, skipping insertion in model container [2021-11-21 01:16:39,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:26" (2/3) ... [2021-11-21 01:16:39,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2cb1aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:16:39, skipping insertion in model container [2021-11-21 01:16:39,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:16:39" (3/3) ... [2021-11-21 01:16:39,049 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-21 01:16:39,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:16:39,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:16:39,156 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:16:39,174 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:16:39,183 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:16:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 1435 states, 851 states have (on average 1.262044653349001) internal successors, (1074), 878 states have internal predecessors, (1074), 480 states have call successors, (480), 103 states have call predecessors, (480), 102 states have return successors, (474), 469 states have call predecessors, (474), 474 states have call successors, (474) [2021-11-21 01:16:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 01:16:39,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:39,277 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-21 01:16:39,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:16:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash -197964418, now seen corresponding path program 1 times [2021-11-21 01:16:39,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:39,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334632032] [2021-11-21 01:16:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:39,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:16:40,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334632032] [2021-11-21 01:16:40,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334632032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:40,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:40,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:16:40,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279029940] [2021-11-21 01:16:40,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:40,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:16:40,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:40,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:16:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:40,171 INFO L87 Difference]: Start difference. First operand has 1435 states, 851 states have (on average 1.262044653349001) internal successors, (1074), 878 states have internal predecessors, (1074), 480 states have call successors, (480), 103 states have call predecessors, (480), 102 states have return successors, (474), 469 states have call predecessors, (474), 474 states have call successors, (474) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:16:43,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:47,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:48,890 INFO L93 Difference]: Finished difference Result 1451 states and 2053 transitions. [2021-11-21 01:16:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:16:48,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-21 01:16:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:48,928 INFO L225 Difference]: With dead ends: 1451 [2021-11-21 01:16:48,928 INFO L226 Difference]: Without dead ends: 1427 [2021-11-21 01:16:48,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:16:48,941 INFO L933 BasicCegarLoop]: 1763 mSDtfsCounter, 2017 mSDsluCounter, 4041 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 5284 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:48,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2021 Valid, 5284 Invalid, 792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 01:16:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-21 01:16:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1427. [2021-11-21 01:16:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 850 states have (on average 1.255294117647059) internal successors, (1067), 873 states have internal predecessors, (1067), 474 states have call successors, (474), 103 states have call predecessors, (474), 102 states have return successors, (471), 466 states have call predecessors, (471), 471 states have call successors, (471) [2021-11-21 01:16:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2012 transitions. [2021-11-21 01:16:49,266 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2012 transitions. Word has length 35 [2021-11-21 01:16:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:49,271 INFO L470 AbstractCegarLoop]: Abstraction has 1427 states and 2012 transitions. [2021-11-21 01:16:49,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:16:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2012 transitions. [2021-11-21 01:16:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-21 01:16:49,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:49,276 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-21 01:16:49,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:16:49,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:16:49,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1844118802, now seen corresponding path program 1 times [2021-11-21 01:16:49,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:16:49,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650098236] [2021-11-21 01:16:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:49,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:16:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:16:49,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:49,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650098236] [2021-11-21 01:16:49,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650098236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:49,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:49,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:16:49,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086553525] [2021-11-21 01:16:49,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:49,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:16:49,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:16:49,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:49,556 INFO L87 Difference]: Start difference. First operand 1427 states and 2012 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:16:55,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:58,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:16:59,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:00,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:01,901 INFO L93 Difference]: Finished difference Result 2722 states and 3863 transitions. [2021-11-21 01:17:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:01,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 41 [2021-11-21 01:17:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:01,933 INFO L225 Difference]: With dead ends: 2722 [2021-11-21 01:17:01,933 INFO L226 Difference]: Without dead ends: 2720 [2021-11-21 01:17:01,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:17:01,943 INFO L933 BasicCegarLoop]: 2416 mSDtfsCounter, 1886 mSDsluCounter, 7384 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 8932 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:01,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1888 Valid, 8932 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1192 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2021-11-21 01:17:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-11-21 01:17:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2696. [2021-11-21 01:17:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 1603 states have (on average 1.2526512788521522) internal successors, (2008), 1650 states have internal predecessors, (2008), 893 states have call successors, (893), 201 states have call predecessors, (893), 199 states have return successors, (929), 874 states have call predecessors, (929), 887 states have call successors, (929) [2021-11-21 01:17:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 3830 transitions. [2021-11-21 01:17:02,270 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 3830 transitions. Word has length 41 [2021-11-21 01:17:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:02,274 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 3830 transitions. [2021-11-21 01:17:02,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:17:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 3830 transitions. [2021-11-21 01:17:02,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-21 01:17:02,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:02,288 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-21 01:17:02,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:17:02,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:02,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1595685962, now seen corresponding path program 1 times [2021-11-21 01:17:02,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:02,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204482933] [2021-11-21 01:17:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:02,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:17:02,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:02,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204482933] [2021-11-21 01:17:02,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204482933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:02,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:02,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:17:02,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652771820] [2021-11-21 01:17:02,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:02,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:17:02,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:17:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:02,561 INFO L87 Difference]: Start difference. First operand 2696 states and 3830 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:17:05,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:10,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:13,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:16,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:17,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:18,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:19,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:20,118 INFO L93 Difference]: Finished difference Result 5073 states and 7276 transitions. [2021-11-21 01:17:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2021-11-21 01:17:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:20,170 INFO L225 Difference]: With dead ends: 5073 [2021-11-21 01:17:20,170 INFO L226 Difference]: Without dead ends: 5069 [2021-11-21 01:17:20,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:17:20,186 INFO L933 BasicCegarLoop]: 2417 mSDtfsCounter, 1874 mSDsluCounter, 7396 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 8941 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:20,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1875 Valid, 8941 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1196 Invalid, 3 Unknown, 0 Unchecked, 17.1s Time] [2021-11-21 01:17:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2021-11-21 01:17:20,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 5035. [2021-11-21 01:17:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 2993 states have (on average 1.2502505846976277) internal successors, (3742), 3083 states have internal predecessors, (3742), 1658 states have call successors, (1658), 391 states have call predecessors, (1658), 383 states have return successors, (1828), 1614 states have call predecessors, (1828), 1646 states have call successors, (1828) [2021-11-21 01:17:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 7228 transitions. [2021-11-21 01:17:20,563 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 7228 transitions. Word has length 46 [2021-11-21 01:17:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:20,564 INFO L470 AbstractCegarLoop]: Abstraction has 5035 states and 7228 transitions. [2021-11-21 01:17:20,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:17:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 7228 transitions. [2021-11-21 01:17:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 01:17:20,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:20,568 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2021-11-21 01:17:20,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:17:20,568 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1098403758, now seen corresponding path program 1 times [2021-11-21 01:17:20,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:20,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899219402] [2021-11-21 01:17:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:20,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-21 01:17:20,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:20,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899219402] [2021-11-21 01:17:20,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899219402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:20,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:20,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:17:20,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521964265] [2021-11-21 01:17:20,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:20,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:17:20,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:20,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:17:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:20,838 INFO L87 Difference]: Start difference. First operand 5035 states and 7228 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 01:17:23,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:29,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:30,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:31,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:34,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:36,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:38,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:38,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:38,611 INFO L93 Difference]: Finished difference Result 10062 states and 14830 transitions. [2021-11-21 01:17:38,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:38,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2021-11-21 01:17:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:38,721 INFO L225 Difference]: With dead ends: 10062 [2021-11-21 01:17:38,721 INFO L226 Difference]: Without dead ends: 10003 [2021-11-21 01:17:38,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:17:38,740 INFO L933 BasicCegarLoop]: 2313 mSDtfsCounter, 2022 mSDsluCounter, 7166 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 8680 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:38,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2022 Valid, 8680 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1082 Invalid, 2 Unknown, 0 Unchecked, 17.3s Time] [2021-11-21 01:17:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10003 states. [2021-11-21 01:17:39,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10003 to 9992. [2021-11-21 01:17:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9992 states, 5942 states have (on average 1.2507573207674183) internal successors, (7432), 6122 states have internal predecessors, (7432), 3291 states have call successors, (3291), 773 states have call predecessors, (3291), 758 states have return successors, (4024), 3203 states have call predecessors, (4024), 3270 states have call successors, (4024) [2021-11-21 01:17:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9992 states to 9992 states and 14747 transitions. [2021-11-21 01:17:39,669 INFO L78 Accepts]: Start accepts. Automaton has 9992 states and 14747 transitions. Word has length 51 [2021-11-21 01:17:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:39,669 INFO L470 AbstractCegarLoop]: Abstraction has 9992 states and 14747 transitions. [2021-11-21 01:17:39,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 01:17:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9992 states and 14747 transitions. [2021-11-21 01:17:39,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-21 01:17:39,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:39,712 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:39,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:17:39,713 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:17:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2096729301, now seen corresponding path program 1 times [2021-11-21 01:17:39,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:17:39,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324780224] [2021-11-21 01:17:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:39,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:17:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-11-21 01:17:40,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:17:40,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324780224] [2021-11-21 01:17:40,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324780224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:17:40,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692982425] [2021-11-21 01:17:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:40,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:17:40,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:17:40,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:17:40,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:17:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:41,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-21 01:17:41,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-21 01:17:42,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:17:42,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692982425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:42,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:17:42,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 17 [2021-11-21 01:17:42,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824916565] [2021-11-21 01:17:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:42,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:17:42,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:17:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:17:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:17:42,984 INFO L87 Difference]: Start difference. First operand 9992 states and 14747 transitions. Second operand has 12 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) [2021-11-21 01:17:47,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:51,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:17:55,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:00,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:01,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:03,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:06,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:09,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:10,519 INFO L93 Difference]: Finished difference Result 20253 states and 30787 transitions. [2021-11-21 01:18:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:18:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) Word has length 229 [2021-11-21 01:18:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:10,615 INFO L225 Difference]: With dead ends: 20253 [2021-11-21 01:18:10,615 INFO L226 Difference]: Without dead ends: 10265 [2021-11-21 01:18:10,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:18:10,713 INFO L933 BasicCegarLoop]: 1761 mSDtfsCounter, 98 mSDsluCounter, 19982 mSDsCounter, 0 mSdLazyCounter, 3246 mSolverCounterSat, 30 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 19181 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3246 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:10,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 19181 Invalid, 3280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 3246 Invalid, 4 Unknown, 0 Unchecked, 26.7s Time] [2021-11-21 01:18:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10265 states. [2021-11-21 01:18:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10265 to 10094. [2021-11-21 01:18:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10094 states, 6009 states have (on average 1.2479613912464635) internal successors, (7499), 6189 states have internal predecessors, (7499), 3318 states have call successors, (3318), 773 states have call predecessors, (3318), 766 states have return successors, (4095), 3238 states have call predecessors, (4095), 3297 states have call successors, (4095) [2021-11-21 01:18:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10094 states to 10094 states and 14912 transitions. [2021-11-21 01:18:11,491 INFO L78 Accepts]: Start accepts. Automaton has 10094 states and 14912 transitions. Word has length 229 [2021-11-21 01:18:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:11,493 INFO L470 AbstractCegarLoop]: Abstraction has 10094 states and 14912 transitions. [2021-11-21 01:18:11,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (42), 2 states have call predecessors, (42), 5 states have return successors, (40), 7 states have call predecessors, (40), 6 states have call successors, (40) [2021-11-21 01:18:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 10094 states and 14912 transitions. [2021-11-21 01:18:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-21 01:18:11,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:11,506 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:11,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:11,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:11,727 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 476723543, now seen corresponding path program 1 times [2021-11-21 01:18:11,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:11,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963055145] [2021-11-21 01:18:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:11,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2021-11-21 01:18:12,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:12,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963055145] [2021-11-21 01:18:12,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963055145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:12,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:12,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:18:12,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227766053] [2021-11-21 01:18:12,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:12,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:18:12,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:12,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:18:12,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:18:12,434 INFO L87 Difference]: Start difference. First operand 10094 states and 14912 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (42), 4 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-21 01:18:24,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:26,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:28,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:29,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:37,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:38,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:40,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:41,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:42,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:43,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:47,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:18:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:52,417 INFO L93 Difference]: Finished difference Result 13539 states and 20252 transitions. [2021-11-21 01:18:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:18:52,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (42), 4 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 3 states have call successors, (40) Word has length 265 [2021-11-21 01:18:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:52,519 INFO L225 Difference]: With dead ends: 13539 [2021-11-21 01:18:52,519 INFO L226 Difference]: Without dead ends: 13502 [2021-11-21 01:18:52,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:18:52,530 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 5825 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 7268 mSolverCounterSat, 5308 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 12578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5308 IncrementalHoareTripleChecker+Valid, 7268 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:52,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6293 Valid, 5381 Invalid, 12578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5308 Valid, 7268 Invalid, 2 Unknown, 0 Unchecked, 39.1s Time] [2021-11-21 01:18:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13502 states. [2021-11-21 01:18:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13502 to 13291. [2021-11-21 01:18:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13291 states, 7904 states have (on average 1.243421052631579) internal successors, (9828), 8135 states have internal predecessors, (9828), 4382 states have call successors, (4382), 963 states have call predecessors, (4382), 1004 states have return successors, (5654), 4331 states have call predecessors, (5654), 4367 states have call successors, (5654) [2021-11-21 01:18:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13291 states to 13291 states and 19864 transitions. [2021-11-21 01:18:53,587 INFO L78 Accepts]: Start accepts. Automaton has 13291 states and 19864 transitions. Word has length 265 [2021-11-21 01:18:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:53,588 INFO L470 AbstractCegarLoop]: Abstraction has 13291 states and 19864 transitions. [2021-11-21 01:18:53,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (42), 4 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-21 01:18:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 13291 states and 19864 transitions. [2021-11-21 01:18:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-21 01:18:53,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:53,602 INFO L514 BasicCegarLoop]: trace histogram [14, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:53,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:18:53,602 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:18:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1143530825, now seen corresponding path program 1 times [2021-11-21 01:18:53,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:18:53,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023937373] [2021-11-21 01:18:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:53,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:18:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-21 01:18:54,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:18:54,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023937373] [2021-11-21 01:18:54,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023937373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:18:54,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:18:54,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:18:54,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873079924] [2021-11-21 01:18:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:18:54,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:18:54,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:18:54,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:18:54,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:18:54,123 INFO L87 Difference]: Start difference. First operand 13291 states and 19864 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (42), 4 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 01:18:59,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:08,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:10,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:12,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:13,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:16,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:19,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:21,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:23,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:25,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:29,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:30,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:32,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:33,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:35,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:37,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:37,260 INFO L93 Difference]: Finished difference Result 18730 states and 28168 transitions. [2021-11-21 01:19:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:19:37,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (42), 4 states have call predecessors, (42), 3 states have call successors, (42) Word has length 274 [2021-11-21 01:19:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:37,378 INFO L225 Difference]: With dead ends: 18730 [2021-11-21 01:19:37,379 INFO L226 Difference]: Without dead ends: 18695 [2021-11-21 01:19:37,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:19:37,396 INFO L933 BasicCegarLoop]: 1642 mSDtfsCounter, 5861 mSDsluCounter, 4756 mSDsCounter, 0 mSdLazyCounter, 7369 mSolverCounterSat, 5183 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6329 SdHoareTripleChecker+Valid, 5584 SdHoareTripleChecker+Invalid, 12558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5183 IncrementalHoareTripleChecker+Valid, 7369 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:37,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6329 Valid, 5584 Invalid, 12558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5183 Valid, 7369 Invalid, 6 Unknown, 0 Unchecked, 42.2s Time] [2021-11-21 01:19:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18695 states. [2021-11-21 01:19:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18695 to 18148. [2021-11-21 01:19:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18148 states, 10786 states have (on average 1.2407750788058594) internal successors, (13383), 11086 states have internal predecessors, (13383), 5967 states have call successors, (5967), 1328 states have call predecessors, (5967), 1394 states have return successors, (7878), 5915 states have call predecessors, (7878), 5952 states have call successors, (7878) [2021-11-21 01:19:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18148 states to 18148 states and 27228 transitions. [2021-11-21 01:19:38,724 INFO L78 Accepts]: Start accepts. Automaton has 18148 states and 27228 transitions. Word has length 274 [2021-11-21 01:19:38,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:38,728 INFO L470 AbstractCegarLoop]: Abstraction has 18148 states and 27228 transitions. [2021-11-21 01:19:38,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (44), 4 states have call predecessors, (44), 3 states have return successors, (42), 4 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 01:19:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 18148 states and 27228 transitions. [2021-11-21 01:19:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-21 01:19:38,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:38,763 INFO L514 BasicCegarLoop]: trace histogram [15, 9, 9, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:38,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:19:38,764 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:38,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1880002811, now seen corresponding path program 1 times [2021-11-21 01:19:38,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:38,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349847140] [2021-11-21 01:19:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:38,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2021-11-21 01:19:39,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349847140] [2021-11-21 01:19:39,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349847140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:39,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358167364] [2021-11-21 01:19:39,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:39,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:39,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:39,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:39,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6ecb6b-31c1-4161-a818-ab67ba0a263d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:19:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:40,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 3201 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-21 01:19:40,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2021-11-21 01:19:41,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:19:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 23 proven. 14 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2021-11-21 01:19:42,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358167364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:19:42,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1948573713] [2021-11-21 01:19:42,233 INFO L159 IcfgInterpreter]: Started Sifa with 164 locations of interest [2021-11-21 01:19:42,233 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:19:42,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:19:42,245 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:19:42,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs