./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--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f0e55ca795fc0b7479008c7c7ace6ad96366c87862ace8719a39598b92db6b60 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:36:56,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:36:56,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:36:56,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:36:56,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:36:56,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:36:56,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:36:56,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:36:56,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:36:56,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:36:56,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:36:56,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:36:56,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:36:56,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:36:56,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:36:56,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:36:56,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:36:56,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:36:56,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:36:56,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:36:56,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:36:56,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:36:56,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:36:56,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:36:56,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:36:56,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:36:56,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:36:56,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:36:56,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:36:56,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:36:56,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:36:56,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:36:56,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:36:56,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:36:56,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:36:56,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:36:56,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:36:56,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:36:56,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:36:56,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:36:56,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:36:56,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:36:56,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:36:56,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:36:56,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:36:56,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:36:56,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:36:56,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:36:56,417 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:36:56,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:36:56,417 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:36:56,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:36:56,417 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:36:56,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:36:56,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:36:56,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:36:56,418 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:36:56,418 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:36:56,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:36:56,419 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:36:56,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:36:56,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:36:56,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:36:56,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:36:56,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:36:56,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:36:56,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:36:56,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:36:56,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:36:56,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:36:56,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:36:56,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:56,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:36:56,422 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:36:56,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:36:56,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:36:56,425 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:36:56,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:36:56,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:36:56,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:36:56,427 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_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0e55ca795fc0b7479008c7c7ace6ad96366c87862ace8719a39598b92db6b60 [2022-11-19 08:36:56,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:36:56,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:36:56,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:36:56,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:36:56,749 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:36:56,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-19 08:36:56,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/data/5930f517c/0d85ee1c23d94e858117b9d828dac1dd/FLAG4862d5102 [2022-11-19 08:36:57,856 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:36:57,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-19 08:36:57,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/data/5930f517c/0d85ee1c23d94e858117b9d828dac1dd/FLAG4862d5102 [2022-11-19 08:36:58,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/data/5930f517c/0d85ee1c23d94e858117b9d828dac1dd [2022-11-19 08:36:58,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:36:58,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:36:58,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:58,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:36:58,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:36:58,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:58" (1/1) ... [2022-11-19 08:36:58,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b8ef2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:58, skipping insertion in model container [2022-11-19 08:36:58,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:58" (1/1) ... [2022-11-19 08:36:58,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:36:58,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:37:01,613 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i[373305,373318] [2022-11-19 08:37:01,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:37:01,751 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:37:02,408 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i[373305,373318] [2022-11-19 08:37:02,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:37:02,615 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:37:02,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02 WrapperNode [2022-11-19 08:37:02,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:37:02,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:37:02,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:37:02,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:37:02,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:02,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:02,984 INFO L138 Inliner]: procedures = 451, calls = 3545, calls flagged for inlining = 214, calls inlined = 200, statements flattened = 8905 [2022-11-19 08:37:02,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:37:02,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:37:02,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:37:02,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:37:03,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:37:03,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:37:03,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:37:03,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:37:03,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (1/1) ... [2022-11-19 08:37:03,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:37:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:37:03,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:37:03,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c876f88-c4d9-44da-80ca-fe97c26a20c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:37:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_get_capacity [2022-11-19 08:37:03,633 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_get_capacity [2022-11-19 08:37:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:37:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:37:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_ioctl [2022-11-19 08:37:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_ioctl [2022-11-19 08:37:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure __first_node [2022-11-19 08:37:03,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __first_node [2022-11-19 08:37:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 08:37:03,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 08:37:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:37:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:37:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-19 08:37:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-19 08:37:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_stop_hw_queues [2022-11-19 08:37:03,636 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_stop_hw_queues [2022-11-19 08:37:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 08:37:03,637 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 08:37:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:37:03,637 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:37:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:37:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:37:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_deinit_port [2022-11-19 08:37:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_deinit_port [2022-11-19 08:37:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_exec_internal_command [2022-11-19 08:37:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_exec_internal_command [2022-11-19 08:37:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 08:37:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 08:37:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_read_log_page [2022-11-19 08:37:03,639 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_read_log_page [2022-11-19 08:37:03,639 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:37:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:37:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-19 08:37:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:37:03,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:37:03,640 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:37:03,641 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:37:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 08:37:03,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 08:37:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:37:03,641 INFO L130 BoogieDeclarations]: Found specification of procedure ata_swap_string [2022-11-19 08:37:03,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ata_swap_string [2022-11-19 08:37:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-19 08:37:03,642 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-19 08:37:03,642 INFO L130 BoogieDeclarations]: Found specification of procedure __cpu_to_node [2022-11-19 08:37:03,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __cpu_to_node [2022-11-19 08:37:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2022-11-19 08:37:03,643 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2022-11-19 08:37:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-19 08:37:03,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-19 08:37:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-19 08:37:03,644 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-19 08:37:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 08:37:03,645 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 08:37:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-19 08:37:03,645 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-19 08:37:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:37:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-19 08:37:03,645 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-19 08:37:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_exit [2022-11-19 08:37:03,646 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_exit [2022-11-19 08:37:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure get_least_used_cpu_on_node [2022-11-19 08:37:03,647 INFO L138 BoogieDeclarations]: Found implementation of procedure get_least_used_cpu_on_node [2022-11-19 08:37:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:37:03,647 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:37:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:37:03,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:37:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:37:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:37:03,648 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 08:37:03,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 08:37:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:37:03,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:37:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_first [2022-11-19 08:37:03,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_first [2022-11-19 08:37:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbfx [2022-11-19 08:37:03,649 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbfx [2022-11-19 08:37:03,650 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_get_next_rr_node [2022-11-19 08:37:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_get_next_rr_node [2022-11-19 08:37:03,650 INFO L130 BoogieDeclarations]: Found specification of procedure hba_setup [2022-11-19 08:37:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure hba_setup [2022-11-19 08:37:03,650 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_enable_fis [2022-11-19 08:37:03,651 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_enable_fis [2022-11-19 08:37:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 08:37:03,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 08:37:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-19 08:37:03,652 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-19 08:37:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-19 08:37:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-19 08:37:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 08:37:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 08:37:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-11-19 08:37:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-11-19 08:37:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure pcim_iounmap_regions [2022-11-19 08:37:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure pcim_iounmap_regions [2022-11-19 08:37:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc_node [2022-11-19 08:37:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc_node [2022-11-19 08:37:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure __pcibus_to_node [2022-11-19 08:37:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __pcibus_to_node [2022-11-19 08:37:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 08:37:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 08:37:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:37:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_start_port [2022-11-19 08:37:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_start_port [2022-11-19 08:37:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:37:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:37:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:37:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:37:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-19 08:37:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-19 08:37:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 08:37:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_debugfs_exit [2022-11-19 08:37:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_debugfs_exit [2022-11-19 08:37:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-19 08:37:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-19 08:37:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:37:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:37:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:37:03,665 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:37:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 08:37:03,670 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 08:37:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-19 08:37:03,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-19 08:37:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 08:37:03,672 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 08:37:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:37:03,672 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:37:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf5 [2022-11-19 08:37:03,672 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf5 [2022-11-19 08:37:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf6 [2022-11-19 08:37:03,672 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf6 [2022-11-19 08:37:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf7 [2022-11-19 08:37:03,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf7 [2022-11-19 08:37:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_rq_from_tag [2022-11-19 08:37:03,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_rq_from_tag [2022-11-19 08:37:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf1 [2022-11-19 08:37:03,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf1 [2022-11-19 08:37:03,673 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf2 [2022-11-19 08:37:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf2 [2022-11-19 08:37:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf3 [2022-11-19 08:37:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf3 [2022-11-19 08:37:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf4 [2022-11-19 08:37:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf4 [2022-11-19 08:37:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf0 [2022-11-19 08:37:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf0 [2022-11-19 08:37:03,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:37:03,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:37:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 08:37:03,675 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 08:37:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_put_int_command [2022-11-19 08:37:03,675 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_put_int_command [2022-11-19 08:37:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:37:03,675 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:37:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hba_reset [2022-11-19 08:37:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hba_reset [2022-11-19 08:37:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:37:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:37:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure bdput [2022-11-19 08:37:03,676 INFO L138 BoogieDeclarations]: Found implementation of procedure bdput [2022-11-19 08:37:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:37:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:37:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure dmam_alloc_coherent [2022-11-19 08:37:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure dmam_alloc_coherent [2022-11-19 08:37:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_standby_immediate [2022-11-19 08:37:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_standby_immediate [2022-11-19 08:37:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-19 08:37:03,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-19 08:37:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_get [2022-11-19 08:37:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_get [2022-11-19 08:37:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-19 08:37:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-19 08:37:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 08:37:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 08:37:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 08:37:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-19 08:37:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-19 08:37:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2022-11-19 08:37:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2022-11-19 08:37:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:37:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:37:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 08:37:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 08:37:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_sectors [2022-11-19 08:37:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_sectors [2022-11-19 08:37:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 08:37:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 08:37:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure drop_cpu [2022-11-19 08:37:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_cpu [2022-11-19 08:37:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:37:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:37:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_disable_link_opts [2022-11-19 08:37:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_disable_link_opts [2022-11-19 08:37:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:37:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:37:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-19 08:37:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-19 08:37:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_cmd_from_tag [2022-11-19 08:37:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_cmd_from_tag [2022-11-19 08:37:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2022-11-19 08:37:03,682 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2022-11-19 08:37:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:37:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:37:03,682 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:37:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-19 08:37:03,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-19 08:37:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-19 08:37:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-19 08:37:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:37:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_7 [2022-11-19 08:37:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_7 [2022-11-19 08:37:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 08:37:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 08:37:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure exec_drive_taskfile [2022-11-19 08:37:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure exec_drive_taskfile [2022-11-19 08:37:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:37:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_init_port [2022-11-19 08:37:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_init_port [2022-11-19 08:37:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:37:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:37:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure ida_remove [2022-11-19 08:37:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_remove [2022-11-19 08:37:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_restart_port [2022-11-19 08:37:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_restart_port [2022-11-19 08:37:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:37:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:37:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 08:37:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 08:37:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:37:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:37:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2022-11-19 08:37:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2022-11-19 08:37:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-19 08:37:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-19 08:37:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-19 08:37:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-19 08:37:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure dmam_free_coherent [2022-11-19 08:37:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure dmam_free_coherent [2022-11-19 08:37:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_remove [2022-11-19 08:37:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_remove [2022-11-19 08:37:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_issue_ncq_command [2022-11-19 08:37:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_issue_ncq_command [2022-11-19 08:37:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_of_node [2022-11-19 08:37:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_of_node [2022-11-19 08:37:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:37:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:37:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_get_identify [2022-11-19 08:37:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_get_identify [2022-11-19 08:37:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:37:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:37:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-19 08:37:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-19 08:37:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:37:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:37:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:37:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_set_timeout [2022-11-19 08:37:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_set_timeout [2022-11-19 08:37:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_affinity_hint [2022-11-19 08:37:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_affinity_hint [2022-11-19 08:37:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_resume [2022-11-19 08:37:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_resume [2022-11-19 08:37:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 08:37:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 08:37:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 08:37:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 08:37:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-19 08:37:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-19 08:37:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_put [2022-11-19 08:37:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_put [2022-11-19 08:37:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_shutdown [2022-11-19 08:37:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_shutdown [2022-11-19 08:37:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 08:37:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 08:37:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_9 [2022-11-19 08:37:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_9 [2022-11-19 08:37:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_device_reset [2022-11-19 08:37:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_device_reset [2022-11-19 08:37:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_enable_engine [2022-11-19 08:37:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_enable_engine [2022-11-19 08:37:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_7 [2022-11-19 08:37:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_7 [2022-11-19 08:37:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure pcim_enable_device [2022-11-19 08:37:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pcim_enable_device [2022-11-19 08:37:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 08:37:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 08:37:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_check_surprise_removal [2022-11-19 08:37:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_check_surprise_removal [2022-11-19 08:37:03,698 INFO L130 BoogieDeclarations]: Found specification of procedure devm_free_irq [2022-11-19 08:37:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_free_irq [2022-11-19 08:37:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 08:37:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 08:37:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_end_request [2022-11-19 08:37:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_end_request [2022-11-19 08:37:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-19 08:37:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-19 08:37:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 08:37:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 08:37:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2022-11-19 08:37:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2022-11-19 08:37:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2022-11-19 08:37:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2022-11-19 08:37:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-19 08:37:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-19 08:37:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 08:37:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 08:37:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:37:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_dma_free [2022-11-19 08:37:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_dma_free [2022-11-19 08:37:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_block_initialize [2022-11-19 08:37:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_block_initialize [2022-11-19 08:37:04,977 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:37:04,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:37:05,313 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:37:21,593 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:37:24,277 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:37:24,277 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:37:24,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:37:24 BoogieIcfgContainer [2022-11-19 08:37:24,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:37:24,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:37:24,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:37:24,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:37:24,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:36:58" (1/3) ... [2022-11-19 08:37:24,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f5fa13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:37:24, skipping insertion in model container [2022-11-19 08:37:24,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:37:02" (2/3) ... [2022-11-19 08:37:24,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f5fa13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:37:24, skipping insertion in model container [2022-11-19 08:37:24,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:37:24" (3/3) ... [2022-11-19 08:37:24,292 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-19 08:37:24,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:37:24,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:37:24,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:37:24,404 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;@1b638831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:37:24,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:37:24,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 2326 states, 1437 states have (on average 1.3416840640222687) internal successors, (1928), 1488 states have internal predecessors, (1928), 744 states have call successors, (744), 145 states have call predecessors, (744), 144 states have return successors, (727), 727 states have call predecessors, (727), 727 states have call successors, (727) [2022-11-19 08:37:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-19 08:37:24,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:24,439 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:24,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:24,444 INFO L85 PathProgramCache]: Analyzing trace with hash -795581989, now seen corresponding path program 1 times [2022-11-19 08:37:24,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:24,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093137963] [2022-11-19 08:37:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-19 08:37:26,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:26,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093137963] [2022-11-19 08:37:26,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093137963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:26,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:26,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:37:26,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18641101] [2022-11-19 08:37:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:26,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:37:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:37:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:37:26,152 INFO L87 Difference]: Start difference. First operand has 2326 states, 1437 states have (on average 1.3416840640222687) internal successors, (1928), 1488 states have internal predecessors, (1928), 744 states have call successors, (744), 145 states have call predecessors, (744), 144 states have return successors, (727), 727 states have call predecessors, (727), 727 states have call successors, (727) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-19 08:37:28,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:30,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:33,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:35,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:37,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:40,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:43,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:37:44,444 INFO L93 Difference]: Finished difference Result 6447 states and 9461 transitions. [2022-11-19 08:37:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:37:44,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 409 [2022-11-19 08:37:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:37:44,490 INFO L225 Difference]: With dead ends: 6447 [2022-11-19 08:37:44,490 INFO L226 Difference]: Without dead ends: 4141 [2022-11-19 08:37:44,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:37:44,510 INFO L413 NwaCegarLoop]: 3676 mSDtfsCounter, 2692 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 6750 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:37:44,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 6750 Invalid, 632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 626 Invalid, 5 Unknown, 0 Unchecked, 17.9s Time] [2022-11-19 08:37:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2022-11-19 08:37:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4134. [2022-11-19 08:37:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 2575 states have (on average 1.3293203883495146) internal successors, (3423), 2633 states have internal predecessors, (3423), 1279 states have call successors, (1279), 281 states have call predecessors, (1279), 279 states have return successors, (1281), 1275 states have call predecessors, (1281), 1278 states have call successors, (1281) [2022-11-19 08:37:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 5983 transitions. [2022-11-19 08:37:44,829 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 5983 transitions. Word has length 409 [2022-11-19 08:37:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:37:44,835 INFO L495 AbstractCegarLoop]: Abstraction has 4134 states and 5983 transitions. [2022-11-19 08:37:44,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-19 08:37:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 5983 transitions. [2022-11-19 08:37:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-19 08:37:44,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:37:44,848 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:37:44,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:37:44,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:37:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:37:44,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1434753253, now seen corresponding path program 1 times [2022-11-19 08:37:44,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:37:44,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796340953] [2022-11-19 08:37:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:37:44,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:37:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:37:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-19 08:37:45,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:37:45,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796340953] [2022-11-19 08:37:45,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796340953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:37:45,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:37:45,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:37:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947295483] [2022-11-19 08:37:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:37:45,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:37:45,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:37:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:37:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:37:45,868 INFO L87 Difference]: Start difference. First operand 4134 states and 5983 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-19 08:37:47,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:50,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:52,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:55,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:37:57,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:01,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:01,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:38:01,652 INFO L93 Difference]: Finished difference Result 11817 states and 17061 transitions. [2022-11-19 08:38:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:38:01,653 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 413 [2022-11-19 08:38:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:38:01,720 INFO L225 Difference]: With dead ends: 11817 [2022-11-19 08:38:01,720 INFO L226 Difference]: Without dead ends: 7764 [2022-11-19 08:38:01,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:01,753 INFO L413 NwaCegarLoop]: 3652 mSDtfsCounter, 2613 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 6670 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:38:01,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2623 Valid, 6670 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 627 Invalid, 6 Unknown, 0 Unchecked, 15.4s Time] [2022-11-19 08:38:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7764 states. [2022-11-19 08:38:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7764 to 7744. [2022-11-19 08:38:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7744 states, 4833 states have (on average 1.3327126008690255) internal successors, (6441), 4945 states have internal predecessors, (6441), 2363 states have call successors, (2363), 549 states have call predecessors, (2363), 547 states have return successors, (2371), 2353 states have call predecessors, (2371), 2362 states have call successors, (2371) [2022-11-19 08:38:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 11175 transitions. [2022-11-19 08:38:02,403 INFO L78 Accepts]: Start accepts. Automaton has 7744 states and 11175 transitions. Word has length 413 [2022-11-19 08:38:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:38:02,407 INFO L495 AbstractCegarLoop]: Abstraction has 7744 states and 11175 transitions. [2022-11-19 08:38:02,408 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-19 08:38:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7744 states and 11175 transitions. [2022-11-19 08:38:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-19 08:38:02,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:38:02,424 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:38:02,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:38:02,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:38:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:38:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1393545609, now seen corresponding path program 1 times [2022-11-19 08:38:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:38:02,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560261420] [2022-11-19 08:38:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:02,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:38:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-19 08:38:03,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:38:03,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560261420] [2022-11-19 08:38:03,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560261420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:38:03,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:38:03,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:38:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625088085] [2022-11-19 08:38:03,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:38:03,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:38:03,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:38:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:38:03,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:03,452 INFO L87 Difference]: Start difference. First operand 7744 states and 11175 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-19 08:38:05,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:07,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:10,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:11,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:15,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:19,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:38:20,047 INFO L93 Difference]: Finished difference Result 22409 states and 32273 transitions. [2022-11-19 08:38:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:38:20,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 414 [2022-11-19 08:38:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:38:20,149 INFO L225 Difference]: With dead ends: 22409 [2022-11-19 08:38:20,149 INFO L226 Difference]: Without dead ends: 14746 [2022-11-19 08:38:20,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:20,191 INFO L413 NwaCegarLoop]: 3665 mSDtfsCounter, 2539 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 6683 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:38:20,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2549 Valid, 6683 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 636 Invalid, 5 Unknown, 0 Unchecked, 16.0s Time] [2022-11-19 08:38:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14746 states. [2022-11-19 08:38:20,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14746 to 14728. [2022-11-19 08:38:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14728 states, 9193 states have (on average 1.3337321875339934) internal successors, (12261), 9409 states have internal predecessors, (12261), 4457 states have call successors, (4457), 1079 states have call predecessors, (4457), 1077 states have return successors, (4477), 4439 states have call predecessors, (4477), 4456 states have call successors, (4477) [2022-11-19 08:38:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14728 states to 14728 states and 21195 transitions. [2022-11-19 08:38:20,986 INFO L78 Accepts]: Start accepts. Automaton has 14728 states and 21195 transitions. Word has length 414 [2022-11-19 08:38:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:38:20,989 INFO L495 AbstractCegarLoop]: Abstraction has 14728 states and 21195 transitions. [2022-11-19 08:38:20,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-19 08:38:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 14728 states and 21195 transitions. [2022-11-19 08:38:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-19 08:38:21,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:38:21,002 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2022-11-19 08:38:21,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:38:21,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:38:21,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:38:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1036396924, now seen corresponding path program 1 times [2022-11-19 08:38:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:38:21,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994694027] [2022-11-19 08:38:21,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:21,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:38:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-11-19 08:38:21,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:38:21,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994694027] [2022-11-19 08:38:21,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994694027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:38:21,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:38:22,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:38:22,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659773336] [2022-11-19 08:38:22,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:38:22,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:38:22,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:38:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:38:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:22,003 INFO L87 Difference]: Start difference. First operand 14728 states and 21195 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-19 08:38:24,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:26,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:29,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:31,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:33,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:35,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:39,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:40,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:38:40,970 INFO L93 Difference]: Finished difference Result 36631 states and 52801 transitions. [2022-11-19 08:38:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:38:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 426 [2022-11-19 08:38:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:38:41,102 INFO L225 Difference]: With dead ends: 36631 [2022-11-19 08:38:41,102 INFO L226 Difference]: Without dead ends: 21984 [2022-11-19 08:38:41,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:41,186 INFO L413 NwaCegarLoop]: 3323 mSDtfsCounter, 1461 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 6311 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:38:41,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 6311 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 653 Invalid, 6 Unknown, 0 Unchecked, 18.3s Time] [2022-11-19 08:38:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21984 states. [2022-11-19 08:38:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21984 to 21955. [2022-11-19 08:38:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21955 states, 14013 states have (on average 1.3539570398915293) internal successors, (18973), 14304 states have internal predecessors, (18973), 6340 states have call successors, (6340), 1603 states have call predecessors, (6340), 1601 states have return successors, (6376), 6297 states have call predecessors, (6376), 6339 states have call successors, (6376) [2022-11-19 08:38:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21955 states to 21955 states and 31689 transitions. [2022-11-19 08:38:42,670 INFO L78 Accepts]: Start accepts. Automaton has 21955 states and 31689 transitions. Word has length 426 [2022-11-19 08:38:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:38:42,671 INFO L495 AbstractCegarLoop]: Abstraction has 21955 states and 31689 transitions. [2022-11-19 08:38:42,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-19 08:38:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 21955 states and 31689 transitions. [2022-11-19 08:38:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-19 08:38:42,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:38:42,680 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:38:42,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:38:42,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:38:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:38:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1256258439, now seen corresponding path program 1 times [2022-11-19 08:38:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:38:42,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581842311] [2022-11-19 08:38:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:38:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-11-19 08:38:43,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:38:43,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581842311] [2022-11-19 08:38:43,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581842311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:38:43,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:38:43,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:38:43,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70282083] [2022-11-19 08:38:43,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:38:43,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:38:43,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:38:43,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:38:43,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:43,606 INFO L87 Difference]: Start difference. First operand 21955 states and 31689 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-19 08:38:45,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:47,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:49,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:53,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:55,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:58,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:38:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:38:59,362 INFO L93 Difference]: Finished difference Result 62153 states and 89351 transitions. [2022-11-19 08:38:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:38:59,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 445 [2022-11-19 08:38:59,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:38:59,573 INFO L225 Difference]: With dead ends: 62153 [2022-11-19 08:38:59,573 INFO L226 Difference]: Without dead ends: 40279 [2022-11-19 08:38:59,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:38:59,862 INFO L413 NwaCegarLoop]: 3708 mSDtfsCounter, 2495 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 6610 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:38:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2501 Valid, 6610 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 643 Invalid, 5 Unknown, 0 Unchecked, 14.7s Time] [2022-11-19 08:38:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40279 states. [2022-11-19 08:39:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40279 to 40256. [2022-11-19 08:39:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40256 states, 25632 states have (on average 1.3479244694132335) internal successors, (34550), 26195 states have internal predecessors, (34550), 11574 states have call successors, (11574), 3051 states have call predecessors, (11574), 3049 states have return successors, (11618), 11499 states have call predecessors, (11618), 11573 states have call successors, (11618) [2022-11-19 08:39:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40256 states to 40256 states and 57742 transitions. [2022-11-19 08:39:02,161 INFO L78 Accepts]: Start accepts. Automaton has 40256 states and 57742 transitions. Word has length 445 [2022-11-19 08:39:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:39:02,162 INFO L495 AbstractCegarLoop]: Abstraction has 40256 states and 57742 transitions. [2022-11-19 08:39:02,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-19 08:39:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40256 states and 57742 transitions. [2022-11-19 08:39:02,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-19 08:39:02,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:39:02,171 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 17, 17, 17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:39:02,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:39:02,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:39:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:39:02,172 INFO L85 PathProgramCache]: Analyzing trace with hash -476475415, now seen corresponding path program 1 times [2022-11-19 08:39:02,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:39:02,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475177557] [2022-11-19 08:39:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:39:02,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:39:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:39:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2981 trivial. 0 not checked. [2022-11-19 08:39:03,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:39:03,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475177557] [2022-11-19 08:39:03,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475177557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:39:03,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:39:03,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:39:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945959386] [2022-11-19 08:39:03,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:39:03,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:39:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:39:03,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:39:03,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:39:03,507 INFO L87 Difference]: Start difference. First operand 40256 states and 57742 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:39:04,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:07,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:10,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:13,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:15,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:16,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:20,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:39:20,326 INFO L93 Difference]: Finished difference Result 80433 states and 115367 transitions. [2022-11-19 08:39:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:39:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 486 [2022-11-19 08:39:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:39:20,536 INFO L225 Difference]: With dead ends: 80433 [2022-11-19 08:39:20,536 INFO L226 Difference]: Without dead ends: 40226 [2022-11-19 08:39:20,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:39:20,672 INFO L413 NwaCegarLoop]: 3028 mSDtfsCounter, 0 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6052 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:39:20,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6052 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 605 Invalid, 4 Unknown, 0 Unchecked, 15.4s Time] [2022-11-19 08:39:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40226 states. [2022-11-19 08:39:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40226 to 40146. [2022-11-19 08:39:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40146 states, 25538 states have (on average 1.347638812749628) internal successors, (34416), 26101 states have internal predecessors, (34416), 11566 states have call successors, (11566), 3043 states have call predecessors, (11566), 3041 states have return successors, (11610), 11483 states have call predecessors, (11610), 11565 states have call successors, (11610) [2022-11-19 08:39:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40146 states to 40146 states and 57592 transitions. [2022-11-19 08:39:23,163 INFO L78 Accepts]: Start accepts. Automaton has 40146 states and 57592 transitions. Word has length 486 [2022-11-19 08:39:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:39:23,165 INFO L495 AbstractCegarLoop]: Abstraction has 40146 states and 57592 transitions. [2022-11-19 08:39:23,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-19 08:39:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 40146 states and 57592 transitions. [2022-11-19 08:39:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-11-19 08:39:23,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:39:23,175 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 22, 22, 22, 22, 22, 22, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:39:23,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:39:23,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:39:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:39:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1104239590, now seen corresponding path program 1 times [2022-11-19 08:39:23,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:39:23,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022374401] [2022-11-19 08:39:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:39:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:39:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:39:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4385 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-19 08:39:24,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:39:24,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022374401] [2022-11-19 08:39:24,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022374401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:39:24,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:39:24,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:39:24,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626369086] [2022-11-19 08:39:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:39:24,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:39:24,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:39:24,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:39:24,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:39:24,671 INFO L87 Difference]: Start difference. First operand 40146 states and 57592 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 08:39:26,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:29,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:32,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:35,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:37,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:41,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:39:42,097 INFO L93 Difference]: Finished difference Result 80119 states and 114932 transitions. [2022-11-19 08:39:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:39:42,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 533 [2022-11-19 08:39:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:39:42,259 INFO L225 Difference]: With dead ends: 80119 [2022-11-19 08:39:42,259 INFO L226 Difference]: Without dead ends: 40022 [2022-11-19 08:39:42,610 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 [2022-11-19 08:39:42,611 INFO L413 NwaCegarLoop]: 3026 mSDtfsCounter, 1 mSDsluCounter, 6047 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9073 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:39:42,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9073 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 904 Invalid, 6 Unknown, 0 Unchecked, 15.8s Time] [2022-11-19 08:39:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40022 states. [2022-11-19 08:39:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40022 to 40022. [2022-11-19 08:39:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40022 states, 25471 states have (on average 1.3472969259157472) internal successors, (34317), 26027 states have internal predecessors, (34317), 11517 states have call successors, (11517), 3035 states have call predecessors, (11517), 3033 states have return successors, (11561), 11441 states have call predecessors, (11561), 11516 states have call successors, (11561) [2022-11-19 08:39:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40022 states to 40022 states and 57395 transitions. [2022-11-19 08:39:44,243 INFO L78 Accepts]: Start accepts. Automaton has 40022 states and 57395 transitions. Word has length 533 [2022-11-19 08:39:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:39:44,244 INFO L495 AbstractCegarLoop]: Abstraction has 40022 states and 57395 transitions. [2022-11-19 08:39:44,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 08:39:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 40022 states and 57395 transitions. [2022-11-19 08:39:44,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2022-11-19 08:39:44,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:39:44,254 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:39:44,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:39:44,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:39:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:39:44,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1828160731, now seen corresponding path program 1 times [2022-11-19 08:39:44,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:39:44,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801912986] [2022-11-19 08:39:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:39:44,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:39:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:39:45,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2022-11-19 08:39:45,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:39:45,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801912986] [2022-11-19 08:39:45,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801912986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:39:45,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:39:45,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:39:45,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482843019] [2022-11-19 08:39:45,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:39:45,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:39:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:39:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:39:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:39:45,314 INFO L87 Difference]: Start difference. First operand 40022 states and 57395 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-19 08:39:47,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:50,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:54,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:56,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:39:58,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:00,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:04,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:40:05,406 INFO L93 Difference]: Finished difference Result 113782 states and 162710 transitions. [2022-11-19 08:40:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:40:05,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 523 [2022-11-19 08:40:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:40:05,833 INFO L225 Difference]: With dead ends: 113782 [2022-11-19 08:40:05,833 INFO L226 Difference]: Without dead ends: 73841 [2022-11-19 08:40:05,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:40:05,958 INFO L413 NwaCegarLoop]: 4679 mSDtfsCounter, 2501 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 7577 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:40:05,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2510 Valid, 7577 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 790 Invalid, 5 Unknown, 0 Unchecked, 17.5s Time] [2022-11-19 08:40:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73841 states. [2022-11-19 08:40:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73841 to 73823. [2022-11-19 08:40:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73823 states, 47046 states have (on average 1.349955362836373) internal successors, (63510), 47994 states have internal predecessors, (63510), 20891 states have call successors, (20891), 5887 states have call predecessors, (20891), 5885 states have return successors, (20983), 20767 states have call predecessors, (20983), 20890 states have call successors, (20983) [2022-11-19 08:40:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73823 states to 73823 states and 105384 transitions. [2022-11-19 08:40:09,118 INFO L78 Accepts]: Start accepts. Automaton has 73823 states and 105384 transitions. Word has length 523 [2022-11-19 08:40:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:40:09,119 INFO L495 AbstractCegarLoop]: Abstraction has 73823 states and 105384 transitions. [2022-11-19 08:40:09,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-19 08:40:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 73823 states and 105384 transitions. [2022-11-19 08:40:09,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-11-19 08:40:09,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:40:09,135 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 22, 22, 22, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:40:09,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:40:09,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:40:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:40:09,136 INFO L85 PathProgramCache]: Analyzing trace with hash 98233024, now seen corresponding path program 1 times [2022-11-19 08:40:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:40:09,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150287648] [2022-11-19 08:40:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:40:09,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:40:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:40:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4619 trivial. 0 not checked. [2022-11-19 08:40:10,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:40:10,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150287648] [2022-11-19 08:40:10,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150287648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:40:10,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:40:10,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:40:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762190839] [2022-11-19 08:40:10,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:40:10,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:40:10,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:40:10,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:40:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:40:10,465 INFO L87 Difference]: Start difference. First operand 73823 states and 105384 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 08:40:12,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:15,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:20,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:23,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:25,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:29,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:30,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:40:30,608 INFO L93 Difference]: Finished difference Result 183881 states and 262499 transitions. [2022-11-19 08:40:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:40:30,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 565 [2022-11-19 08:40:30,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:40:31,167 INFO L225 Difference]: With dead ends: 183881 [2022-11-19 08:40:31,167 INFO L226 Difference]: Without dead ends: 110139 [2022-11-19 08:40:31,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:40:31,435 INFO L413 NwaCegarLoop]: 4111 mSDtfsCounter, 2615 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2625 SdHoareTripleChecker+Valid, 7117 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:40:31,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2625 Valid, 7117 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 678 Invalid, 6 Unknown, 0 Unchecked, 16.4s Time] [2022-11-19 08:40:31,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110139 states. [2022-11-19 08:40:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110139 to 110119. [2022-11-19 08:40:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110119 states, 70254 states have (on average 1.3496171036524611) internal successors, (94816), 71674 states have internal predecessors, (94816), 31065 states have call successors, (31065), 8801 states have call predecessors, (31065), 8799 states have return successors, (31205), 30877 states have call predecessors, (31205), 31064 states have call successors, (31205) [2022-11-19 08:40:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110119 states to 110119 states and 157086 transitions. [2022-11-19 08:40:36,591 INFO L78 Accepts]: Start accepts. Automaton has 110119 states and 157086 transitions. Word has length 565 [2022-11-19 08:40:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:40:36,592 INFO L495 AbstractCegarLoop]: Abstraction has 110119 states and 157086 transitions. [2022-11-19 08:40:36,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 08:40:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 110119 states and 157086 transitions. [2022-11-19 08:40:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-11-19 08:40:36,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:40:36,613 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 22, 22, 22, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:40:36,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:40:36,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:40:36,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:40:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1440281984, now seen corresponding path program 1 times [2022-11-19 08:40:36,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:40:36,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071086740] [2022-11-19 08:40:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:40:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:40:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:40:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4619 trivial. 0 not checked. [2022-11-19 08:40:37,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:40:37,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071086740] [2022-11-19 08:40:37,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071086740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:40:37,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:40:37,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:40:37,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252758434] [2022-11-19 08:40:37,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:40:37,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:40:37,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:40:37,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:40:37,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:40:37,505 INFO L87 Difference]: Start difference. First operand 110119 states and 157086 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 08:40:39,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:42,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:47,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:48,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:51,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:54,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:40:59,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:41:00,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:41:00,088 INFO L93 Difference]: Finished difference Result 274772 states and 392099 transitions. [2022-11-19 08:41:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:41:00,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 569 [2022-11-19 08:41:00,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted.