./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--hp--hp100.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_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/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_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/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--hp--hp100.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/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_631d9476-2aff-44d2-b84d-de34511e9717/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 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 --- 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 17:37:23,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:23,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:23,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:23,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:23,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:23,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:23,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:23,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:23,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:23,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:23,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:23,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:23,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:23,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:23,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:23,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:23,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:23,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:23,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:23,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:23,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:23,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:23,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:23,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:23,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:23,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:23,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:23,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:23,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:23,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:23,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:23,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:23,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:23,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:23,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:23,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:23,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:23,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:23,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:23,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:23,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:37:23,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:23,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:23,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:23,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:23,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:23,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:23,316 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:23,316 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:23,317 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:23,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:23,318 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:23,318 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:23,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:23,319 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:23,319 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:23,319 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:23,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:23,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:23,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:23,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:23,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:23,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:23,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:23,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:23,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:23,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:23,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:23,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:23,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:23,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:23,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:23,325 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:23,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:23,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:23,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:23,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:23,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:23,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:23,326 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_631d9476-2aff-44d2-b84d-de34511e9717/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 [2022-10-17 17:37:23,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:23,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:23,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:23,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:23,729 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:23,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-10-17 17:37:23,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/data/582ea543c/f38d8df855bf429f8e0338fcbca54675/FLAGc840be849 [2022-10-17 17:37:24,788 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:24,789 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-10-17 17:37:24,837 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/data/582ea543c/f38d8df855bf429f8e0338fcbca54675/FLAGc840be849 [2022-10-17 17:37:25,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/data/582ea543c/f38d8df855bf429f8e0338fcbca54675 [2022-10-17 17:37:25,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:25,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:25,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:25,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:25,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:25,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:25" (1/1) ... [2022-10-17 17:37:25,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9eddce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:25, skipping insertion in model container [2022-10-17 17:37:25,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:25" (1/1) ... [2022-10-17 17:37:25,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:25,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:27,542 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_631d9476-2aff-44d2-b84d-de34511e9717/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2022-10-17 17:37:27,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:27,656 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:28,043 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_631d9476-2aff-44d2-b84d-de34511e9717/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2022-10-17 17:37:28,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:28,205 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:28,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28 WrapperNode [2022-10-17 17:37:28,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:28,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:28,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:28,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:28,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,557 INFO L138 Inliner]: procedures = 225, calls = 1448, calls flagged for inlining = 103, calls inlined = 100, statements flattened = 3781 [2022-10-17 17:37:28,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:28,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:28,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:28,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:28,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,855 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:28,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:28,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:28,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:28,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (1/1) ... [2022-10-17 17:37:28,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:28,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:29,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631d9476-2aff-44d2-b84d-de34511e9717/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2022-10-17 17:37:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2022-10-17 17:37:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:37:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:37:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:37:29,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:37:29,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:37:29,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:37:29,047 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-10-17 17:37:29,047 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-10-17 17:37:29,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-10-17 17:37:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-10-17 17:37:29,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:37:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:37:29,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:37:29,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:37:29,049 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-10-17 17:37:29,049 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-10-17 17:37:29,049 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-10-17 17:37:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-10-17 17:37:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:37:29,050 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:37:29,050 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:37:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:37:29,051 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-10-17 17:37:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-10-17 17:37:29,051 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2022-10-17 17:37:29,051 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2022-10-17 17:37:29,052 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2022-10-17 17:37:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2022-10-17 17:37:29,052 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-10-17 17:37:29,052 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-10-17 17:37:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:37:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 17:37:29,053 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2022-10-17 17:37:29,053 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2022-10-17 17:37:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-10-17 17:37:29,054 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-10-17 17:37:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:37:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_get_stats [2022-10-17 17:37:29,054 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_get_stats [2022-10-17 17:37:29,054 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-10-17 17:37:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-10-17 17:37:29,055 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-10-17 17:37:29,055 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-10-17 17:37:29,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-10-17 17:37:29,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-10-17 17:37:29,056 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:37:29,057 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:37:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-10-17 17:37:29,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-10-17 17:37:29,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:37:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-10-17 17:37:29,059 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-10-17 17:37:29,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:37:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-10-17 17:37:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-10-17 17:37:29,060 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-10-17 17:37:29,060 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-10-17 17:37:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-10-17 17:37:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-10-17 17:37:29,061 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-17 17:37:29,061 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-17 17:37:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-10-17 17:37:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-10-17 17:37:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-17 17:37:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-17 17:37:29,062 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 17:37:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 17:37:29,063 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-10-17 17:37:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-10-17 17:37:29,063 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2022-10-17 17:37:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2022-10-17 17:37:29,063 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2022-10-17 17:37:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2022-10-17 17:37:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:37:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-10-17 17:37:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-10-17 17:37:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:37:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2022-10-17 17:37:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2022-10-17 17:37:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-10-17 17:37:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-10-17 17:37:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:37:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-10-17 17:37:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-10-17 17:37:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-10-17 17:37:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-10-17 17:37:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:37:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:37:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2022-10-17 17:37:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2022-10-17 17:37:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2022-10-17 17:37:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2022-10-17 17:37:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-17 17:37:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-17 17:37:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2022-10-17 17:37:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2022-10-17 17:37:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-10-17 17:37:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-10-17 17:37:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-10-17 17:37:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-10-17 17:37:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2022-10-17 17:37:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2022-10-17 17:37:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:37:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-10-17 17:37:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-10-17 17:37:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure dev_consume_skb_any [2022-10-17 17:37:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_consume_skb_any [2022-10-17 17:37:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-10-17 17:37:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-10-17 17:37:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:37:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:37:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2022-10-17 17:37:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2022-10-17 17:37:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 17:37:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 17:37:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2022-10-17 17:37:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2022-10-17 17:37:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-10-17 17:37:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-10-17 17:37:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2022-10-17 17:37:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2022-10-17 17:37:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:37:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2022-10-17 17:37:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2022-10-17 17:37:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-10-17 17:37:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-10-17 17:37:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-10-17 17:37:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-10-17 17:37:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:37:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 17:37:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-10-17 17:37:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-10-17 17:37:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2022-10-17 17:37:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2022-10-17 17:37:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2022-10-17 17:37:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2022-10-17 17:37:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2022-10-17 17:37:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2022-10-17 17:37:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-10-17 17:37:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-10-17 17:37:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-10-17 17:37:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-10-17 17:37:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2022-10-17 17:37:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2022-10-17 17:37:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-10-17 17:37:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-10-17 17:37:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:37:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-10-17 17:37:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-10-17 17:37:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2022-10-17 17:37:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2022-10-17 17:37:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-10-17 17:37:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-10-17 17:37:29,976 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:29,980 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:37:30,651 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:37:36,318 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 17:37:36,594 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == (if 0 == ~tmp___4~7#1 then 0 else (if 1 == ~tmp___4~7#1 then 0 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616; [2022-10-17 17:37:36,594 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == (if 0 == ~tmp___4~7#1 then 0 else (if 1 == ~tmp___4~7#1 then 0 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616); [2022-10-17 17:37:36,595 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189-1: assume -9223372036854775808 <= #t~ret673#1 && #t~ret673#1 <= 9223372036854775807;havoc #t~ret673#1; [2022-10-17 17:37:36,595 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189: SUMMARY for call #t~ret673#1 := schedule_timeout_interruptible(1); srcloc: null [2022-10-17 17:37:36,595 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8192: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2022-10-17 17:37:36,595 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8192: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2022-10-17 17:37:36,718 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:37:38,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:37:38,035 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 17:37:38,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:38 BoogieIcfgContainer [2022-10-17 17:37:38,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:37:38,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:37:38,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:37:38,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:37:38,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:25" (1/3) ... [2022-10-17 17:37:38,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc41e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:38, skipping insertion in model container [2022-10-17 17:37:38,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:28" (2/3) ... [2022-10-17 17:37:38,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc41e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:38, skipping insertion in model container [2022-10-17 17:37:38,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:38" (3/3) ... [2022-10-17 17:37:38,053 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-10-17 17:37:38,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:37:38,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:37:38,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:37:38,196 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;@252a29be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:37:38,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:37:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 1366 states, 762 states have (on average 1.3648293963254594) internal successors, (1040), 816 states have internal predecessors, (1040), 535 states have call successors, (535), 70 states have call predecessors, (535), 69 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) [2022-10-17 17:37:38,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-17 17:37:38,257 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:38,258 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-10-17 17:37:38,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:38,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash 384579112, now seen corresponding path program 1 times [2022-10-17 17:37:38,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:38,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149463421] [2022-10-17 17:37:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:38,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-10-17 17:37:39,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:39,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149463421] [2022-10-17 17:37:39,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149463421] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:39,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:39,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:37:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370810352] [2022-10-17 17:37:39,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:39,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:37:39,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:37:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:37:39,652 INFO L87 Difference]: Start difference. First operand has 1366 states, 762 states have (on average 1.3648293963254594) internal successors, (1040), 816 states have internal predecessors, (1040), 535 states have call successors, (535), 70 states have call predecessors, (535), 69 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-10-17 17:37:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:43,097 INFO L93 Difference]: Finished difference Result 4042 states and 6298 transitions. [2022-10-17 17:37:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:37:43,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-10-17 17:37:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:43,146 INFO L225 Difference]: With dead ends: 4042 [2022-10-17 17:37:43,147 INFO L226 Difference]: Without dead ends: 2671 [2022-10-17 17:37:43,165 INFO L412 NwaCegarLoop]: 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 [2022-10-17 17:37:43,169 INFO L413 NwaCegarLoop]: 2767 mSDtfsCounter, 2052 mSDsluCounter, 7911 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 10208 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:43,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 10208 Invalid, 665 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-10-17 17:37:43,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2022-10-17 17:37:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2661. [2022-10-17 17:37:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 1488 states have (on average 1.3541666666666667) internal successors, (2015), 1578 states have internal predecessors, (2015), 1037 states have call successors, (1037), 137 states have call predecessors, (1037), 135 states have return successors, (1036), 1001 states have call predecessors, (1036), 1036 states have call successors, (1036) [2022-10-17 17:37:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4088 transitions. [2022-10-17 17:37:43,553 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4088 transitions. Word has length 131 [2022-10-17 17:37:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:43,554 INFO L495 AbstractCegarLoop]: Abstraction has 2661 states and 4088 transitions. [2022-10-17 17:37:43,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-10-17 17:37:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4088 transitions. [2022-10-17 17:37:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-10-17 17:37:43,568 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:43,568 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-10-17 17:37:43,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:37:43,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:43,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:43,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1406971933, now seen corresponding path program 1 times [2022-10-17 17:37:43,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:43,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015406137] [2022-10-17 17:37:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:43,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-10-17 17:37:44,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015406137] [2022-10-17 17:37:44,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015406137] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:44,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:44,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:37:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253102326] [2022-10-17 17:37:44,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:44,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:37:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:37:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:37:44,262 INFO L87 Difference]: Start difference. First operand 2661 states and 4088 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-10-17 17:37:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:48,013 INFO L93 Difference]: Finished difference Result 6635 states and 10195 transitions. [2022-10-17 17:37:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:37:48,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 130 [2022-10-17 17:37:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:48,055 INFO L225 Difference]: With dead ends: 6635 [2022-10-17 17:37:48,055 INFO L226 Difference]: Without dead ends: 3993 [2022-10-17 17:37:48,076 INFO L412 NwaCegarLoop]: 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 [2022-10-17 17:37:48,078 INFO L413 NwaCegarLoop]: 2948 mSDtfsCounter, 2033 mSDsluCounter, 8271 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 10733 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:48,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 10733 Invalid, 693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-17 17:37:48,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3993 states. [2022-10-17 17:37:48,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3993 to 3970. [2022-10-17 17:37:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 2220 states have (on average 1.3558558558558558) internal successors, (3010), 2359 states have internal predecessors, (3010), 1547 states have call successors, (1547), 205 states have call predecessors, (1547), 202 states have return successors, (1546), 1489 states have call predecessors, (1546), 1546 states have call successors, (1546) [2022-10-17 17:37:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 6103 transitions. [2022-10-17 17:37:48,469 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 6103 transitions. Word has length 130 [2022-10-17 17:37:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:48,470 INFO L495 AbstractCegarLoop]: Abstraction has 3970 states and 6103 transitions. [2022-10-17 17:37:48,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-10-17 17:37:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 6103 transitions. [2022-10-17 17:37:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-10-17 17:37:48,482 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:48,482 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-10-17 17:37:48,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:37:48,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:48,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2074135467, now seen corresponding path program 1 times [2022-10-17 17:37:48,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:48,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180663065] [2022-10-17 17:37:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:48,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-10-17 17:37:49,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180663065] [2022-10-17 17:37:49,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180663065] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:49,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:49,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:37:49,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310804730] [2022-10-17 17:37:49,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:49,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:37:49,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:49,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:37:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:37:49,045 INFO L87 Difference]: Start difference. First operand 3970 states and 6103 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16)