./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta --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 f79f3d9139777b1f3fad73d9402dfb981cfc6913b7a8d2e7fbb1388b638a27b1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:39:01,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:39:01,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:39:01,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:39:01,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:39:01,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:39:01,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:39:01,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:39:01,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:39:01,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:39:01,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:39:01,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:39:01,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:39:01,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:39:01,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:39:01,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:39:01,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:39:01,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:39:01,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:39:01,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:39:01,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:39:01,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:39:01,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:39:01,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:39:01,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:39:01,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:39:01,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:39:01,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:39:01,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:39:01,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:39:01,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:39:01,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:39:01,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:39:01,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:39:01,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:39:01,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:39:01,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:39:01,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:39:01,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:39:01,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:39:01,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:39:01,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:39:02,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:39:02,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:39:02,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:39:02,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:39:02,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:39:02,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:39:02,029 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:39:02,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:39:02,029 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:39:02,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:39:02,031 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:39:02,031 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:39:02,032 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:39:02,032 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:39:02,032 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:39:02,033 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:39:02,033 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:39:02,033 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:39:02,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:39:02,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:39:02,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:39:02,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:39:02,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:39:02,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:39:02,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:39:02,036 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:39:02,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:39:02,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:39:02,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:39:02,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:02,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:39:02,039 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:39:02,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:39:02,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:39:02,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:39:02,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:39:02,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:39:02,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:39:02,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f79f3d9139777b1f3fad73d9402dfb981cfc6913b7a8d2e7fbb1388b638a27b1 [2022-10-17 17:39:02,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:39:02,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:39:02,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:39:02,423 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:39:02,424 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:39:02,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i [2022-10-17 17:39:02,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/data/eee09c109/c556b002d897462cb76cdb96153c2de5/FLAG3b94f5e86 [2022-10-17 17:39:03,631 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:39:03,633 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i [2022-10-17 17:39:03,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/data/eee09c109/c556b002d897462cb76cdb96153c2de5/FLAG3b94f5e86 [2022-10-17 17:39:03,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/data/eee09c109/c556b002d897462cb76cdb96153c2de5 [2022-10-17 17:39:03,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:39:03,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:39:03,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:03,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:39:03,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:39:03,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:04,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ef61a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:04, skipping insertion in model container [2022-10-17 17:39:04,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:39:03" (1/1) ... [2022-10-17 17:39:04,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:39:04,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:39:06,464 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_4bc2266a-dbd4-4317-aa81-6b1498186527/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i[262495,262508] [2022-10-17 17:39:06,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:06,560 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:39:06,885 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_4bc2266a-dbd4-4317-aa81-6b1498186527/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i[262495,262508] [2022-10-17 17:39:06,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:39:07,121 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:39:07,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07 WrapperNode [2022-10-17 17:39:07,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:39:07,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:07,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:39:07,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:39:07,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,463 INFO L138 Inliner]: procedures = 264, calls = 1348, calls flagged for inlining = 129, calls inlined = 124, statements flattened = 3695 [2022-10-17 17:39:07,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:39:07,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:39:07,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:39:07,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:39:07,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,686 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:39:07,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:39:07,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:39:07,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:39:07,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (1/1) ... [2022-10-17 17:39:07,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:39:07,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:39:07,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:39:07,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc2266a-dbd4-4317-aa81-6b1498186527/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:39:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure kick_tx [2022-10-17 17:39:07,863 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_tx [2022-10-17 17:39:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_set_multicast [2022-10-17 17:39:07,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_set_multicast [2022-10-17 17:39:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:39:07,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:39:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:39:07,864 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:39:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-10-17 17:39:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-10-17 17:39:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_rx_kick [2022-10-17 17:39:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_rx_kick [2022-10-17 17:39:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-10-17 17:39:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-10-17 17:39:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_do_reset [2022-10-17 17:39:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_do_reset [2022-10-17 17:39:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-10-17 17:39:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-10-17 17:39:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:39:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:39:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-10-17 17:39:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-10-17 17:39:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-10-17 17:39:07,868 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-10-17 17:39:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-10-17 17:39:07,868 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-10-17 17:39:07,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:39:07,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:39:07,869 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-10-17 17:39:07,869 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-10-17 17:39:07,870 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-10-17 17:39:07,870 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-10-17 17:39:07,870 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-10-17 17:39:07,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-10-17 17:39:07,871 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-10-17 17:39:07,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-10-17 17:39:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-10-17 17:39:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-10-17 17:39:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:39:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:39:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:39:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:39:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-17 17:39:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-17 17:39:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-10-17 17:39:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-10-17 17:39:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-10-17 17:39:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-10-17 17:39:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:39:07,877 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:39:07,877 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_update_stats [2022-10-17 17:39:07,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_update_stats [2022-10-17 17:39:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2022-10-17 17:39:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2022-10-17 17:39:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-10-17 17:39:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-10-17 17:39:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:39:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure queue_refill [2022-10-17 17:39:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_refill [2022-10-17 17:39:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-10-17 17:39:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-10-17 17:39:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:39:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-10-17 17:39:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-10-17 17:39:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-10-17 17:39:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-10-17 17:39:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-10-17 17:39:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-10-17 17:39:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-10-17 17:39:07,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-10-17 17:39:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:39:07,885 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:39:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-10-17 17:39:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-10-17 17:39:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:39:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-10-17 17:39:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-10-17 17:39:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:39:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-10-17 17:39:07,887 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-10-17 17:39:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-10-17 17:39:07,888 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-10-17 17:39:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-10-17 17:39:07,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-10-17 17:39:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-17 17:39:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-17 17:39:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_get_stats [2022-10-17 17:39:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_get_stats [2022-10-17 17:39:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 17:39:07,891 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 17:39:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_tx_timeout [2022-10-17 17:39:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_tx_timeout [2022-10-17 17:39:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-10-17 17:39:07,893 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-10-17 17:39:07,894 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-10-17 17:39:07,894 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-10-17 17:39:07,894 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-17 17:39:07,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-17 17:39:07,895 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_3 [2022-10-17 17:39:07,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_3 [2022-10-17 17:39:07,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:39:07,895 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-10-17 17:39:07,895 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-10-17 17:39:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-10-17 17:39:07,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-10-17 17:39:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2022-10-17 17:39:07,897 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2022-10-17 17:39:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-17 17:39:07,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-17 17:39:07,898 INFO L130 BoogieDeclarations]: Found specification of procedure build_rx_desc [2022-10-17 17:39:07,899 INFO L138 BoogieDeclarations]: Found implementation of procedure build_rx_desc [2022-10-17 17:39:07,902 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-10-17 17:39:07,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-10-17 17:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-10-17 17:39:07,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-10-17 17:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:39:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-10-17 17:39:07,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-10-17 17:39:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-10-17 17:39:07,907 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-10-17 17:39:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_change_mtu [2022-10-17 17:39:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_change_mtu [2022-10-17 17:39:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-10-17 17:39:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-10-17 17:39:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:39:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:39:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 17:39:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 17:39:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_run_bist [2022-10-17 17:39:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_run_bist [2022-10-17 17:39:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:39:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:39:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:39:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure clear_rx_desc [2022-10-17 17:39:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_rx_desc [2022-10-17 17:39:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure phy_intr [2022-10-17 17:39:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_intr [2022-10-17 17:39:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-10-17 17:39:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-10-17 17:39:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-10-17 17:39:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-10-17 17:39:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-10-17 17:39:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-10-17 17:39:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-17 17:39:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-17 17:39:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-10-17 17:39:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-10-17 17:39:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-10-17 17:39:07,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-10-17 17:39:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure rx_irq [2022-10-17 17:39:07,919 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_irq [2022-10-17 17:39:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-10-17 17:39:07,920 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-10-17 17:39:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure do_tx_done [2022-10-17 17:39:07,920 INFO L138 BoogieDeclarations]: Found implementation of procedure do_tx_done [2022-10-17 17:39:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_disable_interrupts [2022-10-17 17:39:07,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_disable_interrupts [2022-10-17 17:39:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure kick_rx [2022-10-17 17:39:07,921 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_rx [2022-10-17 17:39:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-17 17:39:07,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-17 17:39:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-10-17 17:39:07,922 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-10-17 17:39:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-10-17 17:39:07,922 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-10-17 17:39:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-10-17 17:39:07,923 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-10-17 17:39:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:39:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure rx_refill [2022-10-17 17:39:07,923 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_refill [2022-10-17 17:39:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:39:07,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:39:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_stop [2022-10-17 17:39:07,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_stop [2022-10-17 17:39:08,939 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:39:08,943 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:39:09,800 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:39:12,450 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:39:14,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:39:14,407 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:39:14,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:14 BoogieIcfgContainer [2022-10-17 17:39:14,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:39:14,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:39:14,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:39:14,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:39:14,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:39:03" (1/3) ... [2022-10-17 17:39:14,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b281c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:14, skipping insertion in model container [2022-10-17 17:39:14,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:39:07" (2/3) ... [2022-10-17 17:39:14,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b281c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:39:14, skipping insertion in model container [2022-10-17 17:39:14,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:39:14" (3/3) ... [2022-10-17 17:39:14,431 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--natsemi--ns83820.ko-entry_point.cil.out.i [2022-10-17 17:39:14,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:39:14,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:39:14,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:39:14,544 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5bfcc710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:39:14,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:39:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 1126 states, 656 states have (on average 1.2804878048780488) internal successors, (840), 695 states have internal predecessors, (840), 388 states have call successors, (388), 81 states have call predecessors, (388), 80 states have return successors, (380), 378 states have call predecessors, (380), 380 states have call successors, (380) [2022-10-17 17:39:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-17 17:39:14,577 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:14,578 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:14,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:14,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:14,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2042217077, now seen corresponding path program 1 times [2022-10-17 17:39:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:14,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560070161] [2022-10-17 17:39:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-17 17:39:15,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560070161] [2022-10-17 17:39:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560070161] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:15,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:15,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:15,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569016335] [2022-10-17 17:39:15,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:15,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:15,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:15,428 INFO L87 Difference]: Start difference. First operand has 1126 states, 656 states have (on average 1.2804878048780488) internal successors, (840), 695 states have internal predecessors, (840), 388 states have call successors, (388), 81 states have call predecessors, (388), 80 states have return successors, (380), 378 states have call predecessors, (380), 380 states have call successors, (380) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 17:39:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:17,569 INFO L93 Difference]: Finished difference Result 2202 states and 3153 transitions. [2022-10-17 17:39:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:39:17,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-10-17 17:39:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:17,608 INFO L225 Difference]: With dead ends: 2202 [2022-10-17 17:39:17,612 INFO L226 Difference]: Without dead ends: 1066 [2022-10-17 17:39:17,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:17,633 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 1535 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:17,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 1369 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 17:39:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2022-10-17 17:39:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2022-10-17 17:39:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 623 states have (on average 1.2487961476725522) internal successors, (778), 651 states have internal predecessors, (778), 365 states have call successors, (365), 78 states have call predecessors, (365), 77 states have return successors, (364), 362 states have call predecessors, (364), 364 states have call successors, (364) [2022-10-17 17:39:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1507 transitions. [2022-10-17 17:39:17,801 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1507 transitions. Word has length 85 [2022-10-17 17:39:17,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:17,803 INFO L495 AbstractCegarLoop]: Abstraction has 1066 states and 1507 transitions. [2022-10-17 17:39:17,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-17 17:39:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1507 transitions. [2022-10-17 17:39:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 17:39:17,814 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:17,814 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:17,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:39:17,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:17,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:17,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1954404377, now seen corresponding path program 1 times [2022-10-17 17:39:17,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:17,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960303178] [2022-10-17 17:39:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:17,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 17:39:18,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:18,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960303178] [2022-10-17 17:39:18,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960303178] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:18,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:18,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:18,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402257752] [2022-10-17 17:39:18,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:18,125 INFO L87 Difference]: Start difference. First operand 1066 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:39:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:19,702 INFO L93 Difference]: Finished difference Result 2038 states and 2866 transitions. [2022-10-17 17:39:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:39:19,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-10-17 17:39:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:19,711 INFO L225 Difference]: With dead ends: 2038 [2022-10-17 17:39:19,711 INFO L226 Difference]: Without dead ends: 983 [2022-10-17 17:39:19,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:19,718 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 1368 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:19,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1208 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 17:39:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-10-17 17:39:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 983. [2022-10-17 17:39:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 573 states have (on average 1.237347294938918) internal successors, (709), 595 states have internal predecessors, (709), 333 states have call successors, (333), 77 states have call predecessors, (333), 76 states have return successors, (332), 330 states have call predecessors, (332), 332 states have call successors, (332) [2022-10-17 17:39:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1374 transitions. [2022-10-17 17:39:19,818 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1374 transitions. Word has length 104 [2022-10-17 17:39:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:19,820 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1374 transitions. [2022-10-17 17:39:19,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 17:39:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1374 transitions. [2022-10-17 17:39:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-17 17:39:19,826 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:19,826 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:19,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:39:19,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2117287502, now seen corresponding path program 1 times [2022-10-17 17:39:19,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:19,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522330212] [2022-10-17 17:39:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:19,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 17:39:20,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:20,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522330212] [2022-10-17 17:39:20,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522330212] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:20,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:20,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:20,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865665427] [2022-10-17 17:39:20,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:20,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:20,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:20,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:20,070 INFO L87 Difference]: Start difference. First operand 983 states and 1374 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 17:39:22,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:22,441 INFO L93 Difference]: Finished difference Result 2644 states and 3666 transitions. [2022-10-17 17:39:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:39:22,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2022-10-17 17:39:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:22,460 INFO L225 Difference]: With dead ends: 2644 [2022-10-17 17:39:22,460 INFO L226 Difference]: Without dead ends: 1672 [2022-10-17 17:39:22,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:22,473 INFO L413 NwaCegarLoop]: 1451 mSDtfsCounter, 938 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:22,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2591 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 17:39:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-10-17 17:39:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1669. [2022-10-17 17:39:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 974 states have (on average 1.2320328542094456) internal successors, (1200), 1013 states have internal predecessors, (1200), 553 states have call successors, (553), 142 states have call predecessors, (553), 141 states have return successors, (552), 548 states have call predecessors, (552), 552 states have call successors, (552) [2022-10-17 17:39:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2305 transitions. [2022-10-17 17:39:22,729 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2305 transitions. Word has length 110 [2022-10-17 17:39:22,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:22,730 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2305 transitions. [2022-10-17 17:39:22,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-17 17:39:22,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2305 transitions. [2022-10-17 17:39:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-10-17 17:39:22,742 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:22,742 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-10-17 17:39:22,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:39:22,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash -380122179, now seen corresponding path program 1 times [2022-10-17 17:39:22,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:22,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045105896] [2022-10-17 17:39:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:22,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-10-17 17:39:23,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:23,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045105896] [2022-10-17 17:39:23,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045105896] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:23,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:23,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175702784] [2022-10-17 17:39:23,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:23,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:23,043 INFO L87 Difference]: Start difference. First operand 1669 states and 2305 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:39:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:24,620 INFO L93 Difference]: Finished difference Result 2998 states and 4156 transitions. [2022-10-17 17:39:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:39:24,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 156 [2022-10-17 17:39:24,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:24,633 INFO L225 Difference]: With dead ends: 2998 [2022-10-17 17:39:24,633 INFO L226 Difference]: Without dead ends: 1343 [2022-10-17 17:39:24,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:24,646 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 1258 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:24,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1116 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 17:39:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-10-17 17:39:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2022-10-17 17:39:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 787 states have (on average 1.236340533672173) internal successors, (973), 812 states have internal predecessors, (973), 448 states have call successors, (448), 108 states have call predecessors, (448), 107 states have return successors, (447), 443 states have call predecessors, (447), 447 states have call successors, (447) [2022-10-17 17:39:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1868 transitions. [2022-10-17 17:39:24,783 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1868 transitions. Word has length 156 [2022-10-17 17:39:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:24,786 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1868 transitions. [2022-10-17 17:39:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:39:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1868 transitions. [2022-10-17 17:39:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-10-17 17:39:24,793 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:24,794 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 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] [2022-10-17 17:39:24,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:39:24,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:24,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2035168362, now seen corresponding path program 1 times [2022-10-17 17:39:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:24,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279425013] [2022-10-17 17:39:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:24,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-10-17 17:39:25,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:25,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279425013] [2022-10-17 17:39:25,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279425013] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:25,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:25,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:25,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347533126] [2022-10-17 17:39:25,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:25,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:25,310 INFO L87 Difference]: Start difference. First operand 1343 states and 1868 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-10-17 17:39:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:39:27,655 INFO L93 Difference]: Finished difference Result 3246 states and 4517 transitions. [2022-10-17 17:39:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:39:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2022-10-17 17:39:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:39:27,673 INFO L225 Difference]: With dead ends: 3246 [2022-10-17 17:39:27,673 INFO L226 Difference]: Without dead ends: 1916 [2022-10-17 17:39:27,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:27,680 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 773 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:39:27,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 2727 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 17:39:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-10-17 17:39:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1916. [2022-10-17 17:39:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1131 states have (on average 1.2316534040671971) internal successors, (1393), 1165 states have internal predecessors, (1393), 628 states have call successors, (628), 157 states have call predecessors, (628), 156 states have return successors, (627), 621 states have call predecessors, (627), 627 states have call successors, (627) [2022-10-17 17:39:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2648 transitions. [2022-10-17 17:39:27,894 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2648 transitions. Word has length 169 [2022-10-17 17:39:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:39:27,895 INFO L495 AbstractCegarLoop]: Abstraction has 1916 states and 2648 transitions. [2022-10-17 17:39:27,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-10-17 17:39:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2648 transitions. [2022-10-17 17:39:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 17:39:27,905 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:39:27,905 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:39:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:39:27,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:39:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:39:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1902686486, now seen corresponding path program 1 times [2022-10-17 17:39:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:39:27,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296164081] [2022-10-17 17:39:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:39:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:39:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:39:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-10-17 17:39:28,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:39:28,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296164081] [2022-10-17 17:39:28,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296164081] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:39:28,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:39:28,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:39:28,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36147392] [2022-10-17 17:39:28,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:39:28,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:39:28,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:39:28,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:39:28,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:39:28,535 INFO L87 Difference]: Start difference. First operand 1916 states and 2648 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)