./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.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_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/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_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/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_af7f117c-2123-47e7-baa9-5ff3a1f83a32/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 aaab35a91d1712a4db1ee4982d280cf380b8393a76dde8325418650d577af40c --- 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 17:23:34,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:23:34,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:23:34,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:23:34,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:23:34,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:23:34,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:23:34,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:23:34,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:23:34,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:23:34,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:23:34,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:23:34,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:23:34,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:23:34,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:23:34,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:23:34,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:23:34,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:23:34,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:23:34,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:23:34,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:23:34,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:23:34,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:23:34,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:23:34,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:23:34,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:23:34,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:23:34,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:23:34,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:23:34,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:23:34,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:23:34,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:23:34,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:23:34,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:23:34,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:23:34,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:23:34,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:23:34,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:23:34,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:23:34,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:23:34,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:23:34,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:23:34,513 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:23:34,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:23:34,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:23:34,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:23:34,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:23:34,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:23:34,516 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:23:34,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:23:34,517 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:23:34,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:23:34,518 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:23:34,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:23:34,519 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:23:34,519 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:23:34,519 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:23:34,519 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:23:34,519 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:23:34,520 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:23:34,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:23:34,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:23:34,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:23:34,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:23:34,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:23:34,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:23:34,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:23:34,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:23:34,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:23:34,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:23:34,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:23:34,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:34,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:23:34,525 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:23:34,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:23:34,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:23:34,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:23:34,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:23:34,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:23:34,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:23:34,527 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_af7f117c-2123-47e7-baa9-5ff3a1f83a32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaab35a91d1712a4db1ee4982d280cf380b8393a76dde8325418650d577af40c [2022-10-17 17:23:34,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:23:34,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:23:34,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:23:34,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:23:34,862 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:23:34,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2022-10-17 17:23:34,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/data/b233fe095/ffedda3731254b298ae6ddb1f525d893/FLAG47618f417 [2022-10-17 17:23:35,924 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:23:35,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2022-10-17 17:23:35,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/data/b233fe095/ffedda3731254b298ae6ddb1f525d893/FLAG47618f417 [2022-10-17 17:23:36,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/data/b233fe095/ffedda3731254b298ae6ddb1f525d893 [2022-10-17 17:23:36,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:23:36,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:23:36,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:36,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:23:36,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:23:36,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bd79c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:36, skipping insertion in model container [2022-10-17 17:23:36,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:23:36" (1/1) ... [2022-10-17 17:23:36,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:23:36,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:23:37,739 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_af7f117c-2123-47e7-baa9-5ff3a1f83a32/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i[168234,168247] [2022-10-17 17:23:38,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:38,625 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:38,825 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_af7f117c-2123-47e7-baa9-5ff3a1f83a32/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i[168234,168247] [2022-10-17 17:23:39,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:39,165 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:39,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39 WrapperNode [2022-10-17 17:23:39,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:39,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:39,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:39,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:39,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,423 INFO L138 Inliner]: procedures = 246, calls = 1442, calls flagged for inlining = 122, calls inlined = 104, statements flattened = 2697 [2022-10-17 17:23:39,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:39,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:39,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:39,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:39,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:39,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:39,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:39,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:39,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (1/1) ... [2022-10-17 17:23:39,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:39,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:39,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:39,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7f117c-2123-47e7-baa9-5ff3a1f83a32/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-10-17 17:23:39,773 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-10-17 17:23:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-10-17 17:23:39,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-10-17 17:23:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:23:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:23:39,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:23:39,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:23:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-10-17 17:23:39,775 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-10-17 17:23:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:23:39,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:23:39,814 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_write16 [2022-10-17 17:23:39,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_write16 [2022-10-17 17:23:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-17 17:23:39,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-17 17:23:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_select_bank [2022-10-17 17:23:39,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_select_bank [2022-10-17 17:23:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_tx_timeout [2022-10-17 17:23:39,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_tx_timeout [2022-10-17 17:23:39,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:23:39,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:23:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-10-17 17:23:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-10-17 17:23:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-10-17 17:23:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-10-17 17:23:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:23:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:23:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-17 17:23:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-17 17:23:39,816 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-10-17 17:23:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-10-17 17:23:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure dma_release_channel [2022-10-17 17:23:39,817 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_release_channel [2022-10-17 17:23:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:23:39,817 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:23:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-10-17 17:23:39,817 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-10-17 17:23:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_read16 [2022-10-17 17:23:39,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_read16 [2022-10-17 17:23:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:23:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~dma_cookie_t~0 [2022-10-17 17:23:39,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~dma_cookie_t~0 [2022-10-17 17:23:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:23:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure dmaengine_prep_slave_sg [2022-10-17 17:23:39,818 INFO L138 BoogieDeclarations]: Found implementation of procedure dmaengine_prep_slave_sg [2022-10-17 17:23:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-17 17:23:39,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-17 17:23:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-10-17 17:23:39,818 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-10-17 17:23:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-10-17 17:23:39,818 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-10-17 17:23:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure __ks8842_start_new_rx_dma [2022-10-17 17:23:39,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __ks8842_start_new_rx_dma [2022-10-17 17:23:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:23:39,819 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:23:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2022-10-17 17:23:39,819 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2022-10-17 17:23:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2022-10-17 17:23:39,819 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2022-10-17 17:23:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:23:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-10-17 17:23:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-10-17 17:23:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:23:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_tx_fifo_space [2022-10-17 17:23:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_tx_fifo_space [2022-10-17 17:23:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-10-17 17:23:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-10-17 17:23:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-10-17 17:23:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-10-17 17:23:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 17:23:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 17:23:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-17 17:23:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-17 17:23:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-17 17:23:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-17 17:23:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:23:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-17 17:23:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-17 17:23:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-10-17 17:23:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-10-17 17:23:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:23:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_reset_hw [2022-10-17 17:23:39,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_reset_hw [2022-10-17 17:23:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:23:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-10-17 17:23:39,822 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-10-17 17:23:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-10-17 17:23:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-10-17 17:23:39,830 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_request_channel [2022-10-17 17:23:39,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_request_channel [2022-10-17 17:23:39,831 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_update_link_status [2022-10-17 17:23:39,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_update_link_status [2022-10-17 17:23:39,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:23:39,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:23:39,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-10-17 17:23:39,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-10-17 17:23:39,832 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_write8 [2022-10-17 17:23:39,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_write8 [2022-10-17 17:23:39,832 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_set_mac [2022-10-17 17:23:39,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_set_mac [2022-10-17 17:23:39,832 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_stop_dma [2022-10-17 17:23:39,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_stop_dma [2022-10-17 17:23:39,833 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-10-17 17:23:39,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-10-17 17:23:39,833 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_write_mac_addr [2022-10-17 17:23:39,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_write_mac_addr [2022-10-17 17:23:39,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:23:39,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:23:39,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:23:39,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:23:39,834 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_dealloc_dma_bufs [2022-10-17 17:23:39,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_dealloc_dma_bufs [2022-10-17 17:23:39,834 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_enable_rx [2022-10-17 17:23:39,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_enable_rx [2022-10-17 17:23:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-10-17 17:23:39,835 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-10-17 17:23:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-10-17 17:23:39,835 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-10-17 17:23:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:23:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-10-17 17:23:39,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-10-17 17:23:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-10-17 17:23:39,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-10-17 17:23:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-10-17 17:23:39,837 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-10-17 17:23:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_enable_tx [2022-10-17 17:23:39,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_enable_tx [2022-10-17 17:23:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_cap_set [2022-10-17 17:23:39,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_cap_set [2022-10-17 17:23:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_resume_dma [2022-10-17 17:23:39,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_resume_dma [2022-10-17 17:23:39,838 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-17 17:23:39,838 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-17 17:23:39,838 INFO L130 BoogieDeclarations]: Found specification of procedure ks8842_enable_bits [2022-10-17 17:23:39,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8842_enable_bits [2022-10-17 17:23:39,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:23:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2022-10-17 17:23:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2022-10-17 17:23:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:40,547 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:40,551 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:40,941 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:23:43,257 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:44,040 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:44,041 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 17:23:44,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:44 BoogieIcfgContainer [2022-10-17 17:23:44,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:44,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:44,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:44,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:44,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:23:36" (1/3) ... [2022-10-17 17:23:44,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12769438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:44, skipping insertion in model container [2022-10-17 17:23:44,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:39" (2/3) ... [2022-10-17 17:23:44,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12769438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:44, skipping insertion in model container [2022-10-17 17:23:44,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:44" (3/3) ... [2022-10-17 17:23:44,057 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--micrel--ks8842.ko-entry_point.cil.out.i [2022-10-17 17:23:44,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:44,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:23:44,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:44,206 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;@1335ddc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:44,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:23:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 704 states, 420 states have (on average 1.3047619047619048) internal successors, (548), 440 states have internal predecessors, (548), 220 states have call successors, (220), 63 states have call predecessors, (220), 62 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) [2022-10-17 17:23:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 17:23:44,235 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:44,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:44,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:44,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1061627106, now seen corresponding path program 1 times [2022-10-17 17:23:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:44,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654723938] [2022-10-17 17:23:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:44,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:23:45,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:45,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654723938] [2022-10-17 17:23:45,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654723938] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:45,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:45,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:23:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477974239] [2022-10-17 17:23:45,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:45,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:23:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:45,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:23:45,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:23:45,490 INFO L87 Difference]: Start difference. First operand has 704 states, 420 states have (on average 1.3047619047619048) internal successors, (548), 440 states have internal predecessors, (548), 220 states have call successors, (220), 63 states have call predecessors, (220), 62 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 17:23:49,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:49,962 INFO L93 Difference]: Finished difference Result 2775 states and 3907 transitions. [2022-10-17 17:23:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:23:49,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-10-17 17:23:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:50,007 INFO L225 Difference]: With dead ends: 2775 [2022-10-17 17:23:50,007 INFO L226 Difference]: Without dead ends: 2043 [2022-10-17 17:23:50,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-10-17 17:23:50,027 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 2225 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:50,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 3673 Invalid, 2832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [452 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-10-17 17:23:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-10-17 17:23:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2040. [2022-10-17 17:23:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1227 states have (on average 1.2689486552567237) internal successors, (1557), 1260 states have internal predecessors, (1557), 629 states have call successors, (629), 184 states have call predecessors, (629), 183 states have return successors, (628), 619 states have call predecessors, (628), 628 states have call successors, (628) [2022-10-17 17:23:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2814 transitions. [2022-10-17 17:23:50,321 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2814 transitions. Word has length 30 [2022-10-17 17:23:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:50,321 INFO L495 AbstractCegarLoop]: Abstraction has 2040 states and 2814 transitions. [2022-10-17 17:23:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 17:23:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2814 transitions. [2022-10-17 17:23:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 17:23:50,327 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:50,327 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 17:23:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:23:50,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:50,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 61683489, now seen corresponding path program 1 times [2022-10-17 17:23:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:50,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168472148] [2022-10-17 17:23:50,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:50,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 17:23:50,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:50,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168472148] [2022-10-17 17:23:50,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168472148] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:50,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:50,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:50,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033786683] [2022-10-17 17:23:50,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:50,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:50,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:50,750 INFO L87 Difference]: Start difference. First operand 2040 states and 2814 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 17:23:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:51,765 INFO L93 Difference]: Finished difference Result 4073 states and 5654 transitions. [2022-10-17 17:23:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:23:51,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-10-17 17:23:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:51,806 INFO L225 Difference]: With dead ends: 4073 [2022-10-17 17:23:51,808 INFO L226 Difference]: Without dead ends: 4068 [2022-10-17 17:23:51,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:51,815 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 934 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:51,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 3067 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 17:23:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2022-10-17 17:23:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 4056. [2022-10-17 17:23:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 2435 states have (on average 1.268993839835729) internal successors, (3090), 2501 states have internal predecessors, (3090), 1254 states have call successors, (1254), 367 states have call predecessors, (1254), 366 states have return successors, (1289), 1235 states have call predecessors, (1289), 1253 states have call successors, (1289) [2022-10-17 17:23:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5633 transitions. [2022-10-17 17:23:52,250 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5633 transitions. Word has length 38 [2022-10-17 17:23:52,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:52,257 INFO L495 AbstractCegarLoop]: Abstraction has 4056 states and 5633 transitions. [2022-10-17 17:23:52,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 17:23:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5633 transitions. [2022-10-17 17:23:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-10-17 17:23:52,280 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:52,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:52,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:23:52,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 104368848, now seen corresponding path program 1 times [2022-10-17 17:23:52,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774824786] [2022-10-17 17:23:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:52,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 17:23:52,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:52,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774824786] [2022-10-17 17:23:52,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774824786] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:52,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:52,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070577533] [2022-10-17 17:23:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:52,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:52,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:52,623 INFO L87 Difference]: Start difference. First operand 4056 states and 5633 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-10-17 17:23:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:53,724 INFO L93 Difference]: Finished difference Result 9406 states and 12985 transitions. [2022-10-17 17:23:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2022-10-17 17:23:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:53,771 INFO L225 Difference]: With dead ends: 9406 [2022-10-17 17:23:53,772 INFO L226 Difference]: Without dead ends: 5357 [2022-10-17 17:23:53,793 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 17:23:53,797 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 316 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:53,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1680 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 17:23:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2022-10-17 17:23:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 5316. [2022-10-17 17:23:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 3237 states have (on average 1.2767995057151684) internal successors, (4133), 3333 states have internal predecessors, (4133), 1571 states have call successors, (1571), 508 states have call predecessors, (1571), 507 states have return successors, (1606), 1522 states have call predecessors, (1606), 1570 states have call successors, (1606) [2022-10-17 17:23:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 7310 transitions. [2022-10-17 17:23:54,218 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 7310 transitions. Word has length 108 [2022-10-17 17:23:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:54,219 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 7310 transitions. [2022-10-17 17:23:54,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-10-17 17:23:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 7310 transitions. [2022-10-17 17:23:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-10-17 17:23:54,239 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:54,239 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:54,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:23:54,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:54,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash 746597846, now seen corresponding path program 1 times [2022-10-17 17:23:54,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:54,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778847153] [2022-10-17 17:23:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-10-17 17:23:54,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:54,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778847153] [2022-10-17 17:23:54,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778847153] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:54,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:54,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:54,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225093981] [2022-10-17 17:23:54,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:54,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:54,669 INFO L87 Difference]: Start difference. First operand 5316 states and 7310 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-10-17 17:23:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:55,614 INFO L93 Difference]: Finished difference Result 11633 states and 15958 transitions. [2022-10-17 17:23:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:55,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 198 [2022-10-17 17:23:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:55,671 INFO L225 Difference]: With dead ends: 11633 [2022-10-17 17:23:55,671 INFO L226 Difference]: Without dead ends: 6330 [2022-10-17 17:23:55,699 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 17:23:55,703 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 778 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:55,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2178 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:23:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2022-10-17 17:23:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 6228. [2022-10-17 17:23:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 3804 states have (on average 1.2778654048370137) internal successors, (4861), 3912 states have internal predecessors, (4861), 1809 states have call successors, (1809), 615 states have call predecessors, (1809), 614 states have return successors, (1856), 1764 states have call predecessors, (1856), 1808 states have call successors, (1856) [2022-10-17 17:23:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 8526 transitions. [2022-10-17 17:23:56,237 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 8526 transitions. Word has length 198 [2022-10-17 17:23:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:56,238 INFO L495 AbstractCegarLoop]: Abstraction has 6228 states and 8526 transitions. [2022-10-17 17:23:56,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-10-17 17:23:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 8526 transitions. [2022-10-17 17:23:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-10-17 17:23:56,259 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:56,259 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:23:56,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1179188349, now seen corresponding path program 1 times [2022-10-17 17:23:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:56,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60014334] [2022-10-17 17:23:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-10-17 17:23:56,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:56,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60014334] [2022-10-17 17:23:56,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60014334] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:56,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:56,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:56,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952782691] [2022-10-17 17:23:56,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:56,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:56,693 INFO L87 Difference]: Start difference. First operand 6228 states and 8526 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-10-17 17:23:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:57,962 INFO L93 Difference]: Finished difference Result 14271 states and 19537 transitions. [2022-10-17 17:23:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:57,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 205 [2022-10-17 17:23:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:58,044 INFO L225 Difference]: With dead ends: 14271 [2022-10-17 17:23:58,045 INFO L226 Difference]: Without dead ends: 8155 [2022-10-17 17:23:58,078 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 17:23:58,079 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 396 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:58,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1895 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 17:23:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8155 states. [2022-10-17 17:23:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8155 to 8090. [2022-10-17 17:23:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 5030 states have (on average 1.2811133200795228) internal successors, (6444), 5166 states have internal predecessors, (6444), 2245 states have call successors, (2245), 815 states have call predecessors, (2245), 814 states have return successors, (2292), 2180 states have call predecessors, (2292), 2244 states have call successors, (2292) [2022-10-17 17:23:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 10981 transitions. [2022-10-17 17:23:58,740 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 10981 transitions. Word has length 205 [2022-10-17 17:23:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:58,741 INFO L495 AbstractCegarLoop]: Abstraction has 8090 states and 10981 transitions. [2022-10-17 17:23:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-10-17 17:23:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 10981 transitions. [2022-10-17 17:23:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-10-17 17:23:58,773 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:58,773 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:58,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:23:58,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:58,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1901191876, now seen corresponding path program 1 times [2022-10-17 17:23:58,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:58,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434778840] [2022-10-17 17:23:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:58,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-10-17 17:23:59,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:59,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434778840] [2022-10-17 17:23:59,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434778840] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:59,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:59,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:59,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353165348] [2022-10-17 17:23:59,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:59,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:59,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:59,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:59,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:59,174 INFO L87 Difference]: Start difference. First operand 8090 states and 10981 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-10-17 17:24:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:24:00,080 INFO L93 Difference]: Finished difference Result 12154 states and 16568 transitions. [2022-10-17 17:24:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:24:00,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 215 [2022-10-17 17:24:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:24:00,137 INFO L225 Difference]: With dead ends: 12154 [2022-10-17 17:24:00,137 INFO L226 Difference]: Without dead ends: 8106 [2022-10-17 17:24:00,161 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 17:24:00,162 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 4 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:24:00,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1672 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:24:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8106 states. [2022-10-17 17:24:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8106 to 8106. [2022-10-17 17:24:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8106 states, 5042 states have (on average 1.2804442681475605) internal successors, (6456), 5182 states have internal predecessors, (6456), 2245 states have call successors, (2245), 815 states have call predecessors, (2245), 818 states have return successors, (2296), 2180 states have call predecessors, (2296), 2244 states have call successors, (2296) [2022-10-17 17:24:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 10997 transitions. [2022-10-17 17:24:00,698 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 10997 transitions. Word has length 215 [2022-10-17 17:24:00,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:24:00,700 INFO L495 AbstractCegarLoop]: Abstraction has 8106 states and 10997 transitions. [2022-10-17 17:24:00,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-10-17 17:24:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 10997 transitions. [2022-10-17 17:24:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-10-17 17:24:00,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:24:00,734 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:24:00,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:24:00,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:24:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:24:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash -486993915, now seen corresponding path program 1 times [2022-10-17 17:24:00,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:24:00,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408498587] [2022-10-17 17:24:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:24:00,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:24:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:24:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-10-17 17:24:02,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:24:02,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408498587] [2022-10-17 17:24:02,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408498587] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:24:02,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:24:02,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 17:24:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398485308] [2022-10-17 17:24:02,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:24:02,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 17:24:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:24:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 17:24:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-17 17:24:02,205 INFO L87 Difference]: Start difference. First operand 8106 states and 10997 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 5 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29)