./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-08_1a-drivers--mtd--mtd.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/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_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/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_f3461447-5859-45ea-885b-ba1082c51da0/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 cd8248f52e54312770460b05c349f71bb63d094ef2f9e53f87d753bfc5b43661 --- 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 07:14:02,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:14:02,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:14:02,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:14:02,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:14:02,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:14:02,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:14:02,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:14:02,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:14:02,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:14:02,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:14:02,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:14:02,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:14:02,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:14:02,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:14:02,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:14:02,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:14:02,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:14:02,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:14:02,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:14:02,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:14:02,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:14:02,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:14:02,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:14:02,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:14:02,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:14:02,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:14:02,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:14:02,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:14:02,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:14:02,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:14:02,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:14:02,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:14:02,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:14:02,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:14:02,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:14:02,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:14:02,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:14:02,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:14:02,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:14:02,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:14:02,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:14:02,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:14:02,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:14:02,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:14:02,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:14:02,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:14:02,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:14:02,476 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:14:02,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:14:02,476 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:14:02,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:14:02,478 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:14:02,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:14:02,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:14:02,478 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:14:02,478 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:14:02,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:14:02,479 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:14:02,479 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:14:02,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:14:02,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:14:02,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:14:02,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:14:02,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:14:02,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:14:02,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:14:02,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:14:02,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:14:02,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:14:02,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:14:02,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:14:02,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:14:02,484 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:14:02,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:14:02,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:14:02,485 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:14:02,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:14:02,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:14:02,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:14:02,486 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_f3461447-5859-45ea-885b-ba1082c51da0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8248f52e54312770460b05c349f71bb63d094ef2f9e53f87d753bfc5b43661 [2022-11-19 07:14:02,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:14:02,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:14:02,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:14:02,777 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:14:02,777 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:14:02,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2022-11-19 07:14:02,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/data/0b7f82f09/7d25ba6ab6304fc0ae5d4f214913411c/FLAG4f07d1afb [2022-11-19 07:14:03,824 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:14:03,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2022-11-19 07:14:03,884 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/data/0b7f82f09/7d25ba6ab6304fc0ae5d4f214913411c/FLAG4f07d1afb [2022-11-19 07:14:04,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/data/0b7f82f09/7d25ba6ab6304fc0ae5d4f214913411c [2022-11-19 07:14:04,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:14:04,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:14:04,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:14:04,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:14:04,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:14:04,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:14:04" (1/1) ... [2022-11-19 07:14:04,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ce7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:04, skipping insertion in model container [2022-11-19 07:14:04,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:14:04" (1/1) ... [2022-11-19 07:14:04,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:14:04,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:14:07,127 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_f3461447-5859-45ea-885b-ba1082c51da0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i[372693,372706] [2022-11-19 07:14:07,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:14:07,347 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:14:08,091 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_f3461447-5859-45ea-885b-ba1082c51da0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i[372693,372706] [2022-11-19 07:14:08,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:14:08,305 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:14:08,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08 WrapperNode [2022-11-19 07:14:08,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:14:08,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:14:08,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:14:08,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:14:08,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:08,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:08,765 INFO L138 Inliner]: procedures = 352, calls = 5400, calls flagged for inlining = 117, calls inlined = 101, statements flattened = 8651 [2022-11-19 07:14:08,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:14:08,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:14:08,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:14:08,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:14:08,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:08,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:08,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:08,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:09,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:09,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:09,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:09,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:09,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:14:09,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:14:09,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:14:09,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:14:09,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (1/1) ... [2022-11-19 07:14:09,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:14:09,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:09,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:14:09,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:14:09,586 INFO L130 BoogieDeclarations]: Found specification of procedure part_get_fact_prot_info [2022-11-19 07:14:09,586 INFO L138 BoogieDeclarations]: Found implementation of procedure part_get_fact_prot_info [2022-11-19 07:14:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_mmap [2022-11-19 07:14:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_mmap [2022-11-19 07:14:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-11-19 07:14:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-11-19 07:14:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure part_write_oob [2022-11-19 07:14:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write_oob [2022-11-19 07:14:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_markbad [2022-11-19 07:14:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_markbad [2022-11-19 07:14:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-11-19 07:14:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-11-19 07:14:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_oob [2022-11-19 07:14:09,588 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_oob [2022-11-19 07:14:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-19 07:14:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_suspend [2022-11-19 07:14:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_suspend [2022-11-19 07:14:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:14:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:14:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:14:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:14:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_ecc_stats_errors_show [2022-11-19 07:14:09,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_ecc_stats_errors_show [2022-11-19 07:14:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:14:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:14:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_size_show [2022-11-19 07:14:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_size_show [2022-11-19 07:14:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 07:14:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 07:14:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 07:14:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 07:14:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:14:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:14:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_numeraseregions_show [2022-11-19 07:14:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_numeraseregions_show [2022-11-19 07:14:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure put_mtd_device [2022-11-19 07:14:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure put_mtd_device [2022-11-19 07:14:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_proc_open [2022-11-19 07:14:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_proc_open [2022-11-19 07:14:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-19 07:14:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-19 07:14:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_writeoob [2022-11-19 07:14:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_writeoob [2022-11-19 07:14:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2022-11-19 07:14:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2022-11-19 07:14:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure part_write_user_prot_reg [2022-11-19 07:14:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write_user_prot_reg [2022-11-19 07:14:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_get_user_prot_info [2022-11-19 07:14:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_get_user_prot_info [2022-11-19 07:14:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2022-11-19 07:14:09,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2022-11-19 07:14:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_flags_show [2022-11-19 07:14:09,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_flags_show [2022-11-19 07:14:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure part_read [2022-11-19 07:14:09,596 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read [2022-11-19 07:14:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure concat_write_oob [2022-11-19 07:14:09,596 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_write_oob [2022-11-19 07:14:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:14:09,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:14:09,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:14:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:14:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure vm_iomap_memory [2022-11-19 07:14:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_user_prot_reg [2022-11-19 07:14:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_user_prot_reg [2022-11-19 07:14:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure part_panic_write [2022-11-19 07:14:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure part_panic_write [2022-11-19 07:14:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_ecc_step_size_show [2022-11-19 07:14:09,599 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_ecc_step_size_show [2022-11-19 07:14:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure concat_unlock [2022-11-19 07:14:09,599 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_unlock [2022-11-19 07:14:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:14:09,600 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:14:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_name_show [2022-11-19 07:14:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_name_show [2022-11-19 07:14:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~int~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:14:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~int~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:14:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:14:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:14:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_bbtblocks_show [2022-11-19 07:14:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_bbtblocks_show [2022-11-19 07:14:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-19 07:14:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-19 07:14:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip_or_eccerr [2022-11-19 07:14:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip_or_eccerr [2022-11-19 07:14:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure concat_sync [2022-11-19 07:14:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_sync [2022-11-19 07:14:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_locked [2022-11-19 07:14:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_locked [2022-11-19 07:14:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_partition_offset_show [2022-11-19 07:14:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_partition_offset_show [2022-11-19 07:14:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_isreserved [2022-11-19 07:14:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_isreserved [2022-11-19 07:14:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:14:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_open [2022-11-19 07:14:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_open [2022-11-19 07:14:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure concat_write [2022-11-19 07:14:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_write [2022-11-19 07:14:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_kmalloc_up_to [2022-11-19 07:14:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_kmalloc_up_to [2022-11-19 07:14:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~$Pointer$~TO~int [2022-11-19 07:14:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~$Pointer$~TO~int [2022-11-19 07:14:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_readoob [2022-11-19 07:14:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_readoob [2022-11-19 07:14:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip [2022-11-19 07:14:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip [2022-11-19 07:14:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure part_is_locked [2022-11-19 07:14:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure part_is_locked [2022-11-19 07:14:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_write [2022-11-19 07:14:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_write [2022-11-19 07:14:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:14:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure get_mtd_device [2022-11-19 07:14:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure get_mtd_device [2022-11-19 07:14:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-19 07:14:09,614 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-19 07:14:09,614 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_markbad [2022-11-19 07:14:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_markbad [2022-11-19 07:14:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure concat_resume [2022-11-19 07:14:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_resume [2022-11-19 07:14:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_ioctl [2022-11-19 07:14:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_ioctl [2022-11-19 07:14:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure part_unlock [2022-11-19 07:14:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure part_unlock [2022-11-19 07:14:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:14:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:14:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_fact_prot_reg [2022-11-19 07:14:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_fact_prot_reg [2022-11-19 07:14:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_sync [2022-11-19 07:14:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_sync [2022-11-19 07:14:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_ecc_stats_corrected_show [2022-11-19 07:14:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_ecc_stats_corrected_show [2022-11-19 07:14:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_div_by_ws [2022-11-19 07:14:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_div_by_ws [2022-11-19 07:14:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:14:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:14:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_unpoint [2022-11-19 07:14:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_unpoint [2022-11-19 07:14:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure __chk_range_not_ok [2022-11-19 07:14:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __chk_range_not_ok [2022-11-19 07:14:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_eccerr [2022-11-19 07:14:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_eccerr [2022-11-19 07:14:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-19 07:14:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-19 07:14:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 07:14:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 07:14:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure free_partition [2022-11-19 07:14:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure free_partition [2022-11-19 07:14:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:14:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:14:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:14:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:14:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure concat_erase [2022-11-19 07:14:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_erase [2022-11-19 07:14:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_erase_callback [2022-11-19 07:14:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_erase_callback [2022-11-19 07:14:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 07:14:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 07:14:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_isreserved [2022-11-19 07:14:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_isreserved [2022-11-19 07:14:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-11-19 07:14:09,628 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-11-19 07:14:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_fact_prot_reg [2022-11-19 07:14:09,629 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_fact_prot_reg [2022-11-19 07:14:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:14:09,629 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:14:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-19 07:14:09,629 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-19 07:14:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_resume [2022-11-19 07:14:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_resume [2022-11-19 07:14:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:14:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_subpagesize_show [2022-11-19 07:14:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_subpagesize_show [2022-11-19 07:14:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_cls_resume [2022-11-19 07:14:09,630 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_cls_resume [2022-11-19 07:14:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_add_partition_attrs [2022-11-19 07:14:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_add_partition_attrs [2022-11-19 07:14:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-19 07:14:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-19 07:14:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure add_mtd_device [2022-11-19 07:14:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure add_mtd_device [2022-11-19 07:14:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:14:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write_oob [2022-11-19 07:14:09,632 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write_oob [2022-11-19 07:14:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_type_show [2022-11-19 07:14:09,632 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_type_show [2022-11-19 07:14:09,632 INFO L130 BoogieDeclarations]: Found specification of procedure part_write [2022-11-19 07:14:09,633 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write [2022-11-19 07:14:09,633 INFO L130 BoogieDeclarations]: Found specification of procedure concat_lock [2022-11-19 07:14:09,633 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_lock [2022-11-19 07:14:09,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:14:09,633 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:14:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure register_mtd_user [2022-11-19 07:14:09,634 INFO L138 BoogieDeclarations]: Found implementation of procedure register_mtd_user [2022-11-19 07:14:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_oobsize_show [2022-11-19 07:14:09,634 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_oobsize_show [2022-11-19 07:14:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_lock_user_prot_reg [2022-11-19 07:14:09,634 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_lock_user_prot_reg [2022-11-19 07:14:09,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:14:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:14:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_partition [2022-11-19 07:14:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_partition [2022-11-19 07:14:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure concat_block_isbad [2022-11-19 07:14:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_block_isbad [2022-11-19 07:14:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_close [2022-11-19 07:14:09,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_close [2022-11-19 07:14:09,635 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:14:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:14:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write [2022-11-19 07:14:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write [2022-11-19 07:14:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_badblocks_show [2022-11-19 07:14:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_badblocks_show [2022-11-19 07:14:09,636 INFO L130 BoogieDeclarations]: Found specification of procedure part_sync [2022-11-19 07:14:09,636 INFO L138 BoogieDeclarations]: Found implementation of procedure part_sync [2022-11-19 07:14:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure concat_suspend [2022-11-19 07:14:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_suspend [2022-11-19 07:14:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:14:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 07:14:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 07:14:09,637 INFO L130 BoogieDeclarations]: Found specification of procedure __get_mtd_device [2022-11-19 07:14:09,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_mtd_device [2022-11-19 07:14:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_oob [2022-11-19 07:14:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_oob [2022-11-19 07:14:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-19 07:14:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-19 07:14:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2022-11-19 07:14:09,638 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2022-11-19 07:14:09,638 INFO L130 BoogieDeclarations]: Found specification of procedure kill_mtd_super [2022-11-19 07:14:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_mtd_super [2022-11-19 07:14:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:14:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:14:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-19 07:14:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-19 07:14:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_writesize_show [2022-11-19 07:14:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_writesize_show [2022-11-19 07:14:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_isbad [2022-11-19 07:14:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_isbad [2022-11-19 07:14:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:14:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:14:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:14:09,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:14:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-19 07:14:09,645 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-19 07:14:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:14:09,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:14:09,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:14:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2022-11-19 07:14:09,646 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2022-11-19 07:14:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_erase [2022-11-19 07:14:09,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_erase [2022-11-19 07:14:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 07:14:09,648 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 07:14:09,648 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_erasesize_show [2022-11-19 07:14:09,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_erasesize_show [2022-11-19 07:14:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:14:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure concat_read [2022-11-19 07:14:09,649 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_read [2022-11-19 07:14:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure concat_read_oob [2022-11-19 07:14:09,649 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_read_oob [2022-11-19 07:14:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:14:09,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:14:09,650 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_destroy [2022-11-19 07:14:09,650 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_destroy [2022-11-19 07:14:09,650 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:14:09,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:14:09,650 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_release [2022-11-19 07:14:09,650 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_release [2022-11-19 07:14:09,650 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-19 07:14:09,650 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-19 07:14:09,651 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:14:09,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:14:09,651 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 07:14:09,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 07:14:09,651 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_bitflip_threshold_show [2022-11-19 07:14:09,651 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_bitflip_threshold_show [2022-11-19 07:14:09,651 INFO L130 BoogieDeclarations]: Found specification of procedure __put_mtd_device [2022-11-19 07:14:09,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __put_mtd_device [2022-11-19 07:14:09,652 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_mod_by_eb [2022-11-19 07:14:09,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_mod_by_eb [2022-11-19 07:14:09,652 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 07:14:09,652 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 07:14:09,652 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_get_fact_prot_info [2022-11-19 07:14:09,652 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_get_fact_prot_info [2022-11-19 07:14:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-19 07:14:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-19 07:14:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_unlock [2022-11-19 07:14:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_unlock [2022-11-19 07:14:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure part_suspend [2022-11-19 07:14:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure part_suspend [2022-11-19 07:14:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-19 07:14:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-19 07:14:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure part_unpoint [2022-11-19 07:14:09,654 INFO L138 BoogieDeclarations]: Found implementation of procedure part_unpoint [2022-11-19 07:14:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_isbad [2022-11-19 07:14:09,654 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_isbad [2022-11-19 07:14:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read [2022-11-19 07:14:09,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read [2022-11-19 07:14:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure otp_select_filemode [2022-11-19 07:14:09,655 INFO L138 BoogieDeclarations]: Found implementation of procedure otp_select_filemode [2022-11-19 07:14:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_user_prot_reg [2022-11-19 07:14:09,655 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_user_prot_reg [2022-11-19 07:14:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure __mtd_next_device [2022-11-19 07:14:09,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __mtd_next_device [2022-11-19 07:14:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_lock [2022-11-19 07:14:09,655 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_lock [2022-11-19 07:14:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure del_mtd_device [2022-11-19 07:14:09,656 INFO L138 BoogieDeclarations]: Found implementation of procedure del_mtd_device [2022-11-19 07:14:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~int~TO~int [2022-11-19 07:14:09,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~int~TO~int [2022-11-19 07:14:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_partition [2022-11-19 07:14:09,656 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_partition [2022-11-19 07:14:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure part_erase [2022-11-19 07:14:09,656 INFO L138 BoogieDeclarations]: Found implementation of procedure part_erase [2022-11-19 07:14:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure concat_block_markbad [2022-11-19 07:14:09,657 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_block_markbad [2022-11-19 07:14:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure concat_dev_erase [2022-11-19 07:14:09,657 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_dev_erase [2022-11-19 07:14:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~TO~int [2022-11-19 07:14:09,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~TO~int [2022-11-19 07:14:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-11-19 07:14:09,657 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-11-19 07:14:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure part_resume [2022-11-19 07:14:09,658 INFO L138 BoogieDeclarations]: Found implementation of procedure part_resume [2022-11-19 07:14:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_cls_suspend [2022-11-19 07:14:09,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_cls_suspend [2022-11-19 07:14:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure part_lock_user_prot_reg [2022-11-19 07:14:09,658 INFO L138 BoogieDeclarations]: Found implementation of procedure part_lock_user_prot_reg [2022-11-19 07:14:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:14:09,659 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:14:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:14:09,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:14:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2022-11-19 07:14:09,659 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2022-11-19 07:14:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure part_lock [2022-11-19 07:14:09,659 INFO L138 BoogieDeclarations]: Found implementation of procedure part_lock [2022-11-19 07:14:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-19 07:14:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-19 07:14:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_panic_write [2022-11-19 07:14:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_panic_write [2022-11-19 07:14:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:14:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~~uint64_t~0~TO~int [2022-11-19 07:14:09,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~~uint64_t~0~TO~int [2022-11-19 07:14:09,660 INFO L130 BoogieDeclarations]: Found specification of procedure part_get_user_prot_info [2022-11-19 07:14:09,661 INFO L138 BoogieDeclarations]: Found implementation of procedure part_get_user_prot_info [2022-11-19 07:14:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write_user_prot_reg [2022-11-19 07:14:09,661 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write_user_prot_reg [2022-11-19 07:14:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:14:09,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:14:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_ecc_strength_show [2022-11-19 07:14:09,661 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_ecc_strength_show [2022-11-19 07:14:09,661 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:14:09,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:14:10,957 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:14:10,961 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:14:11,529 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:14:26,592 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:14:29,564 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:14:29,565 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:14:29,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:14:29 BoogieIcfgContainer [2022-11-19 07:14:29,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:14:29,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:14:29,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:14:29,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:14:29,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:14:04" (1/3) ... [2022-11-19 07:14:29,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eaba861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:14:29, skipping insertion in model container [2022-11-19 07:14:29,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:08" (2/3) ... [2022-11-19 07:14:29,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eaba861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:14:29, skipping insertion in model container [2022-11-19 07:14:29,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:14:29" (3/3) ... [2022-11-19 07:14:29,580 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2022-11-19 07:14:29,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:14:29,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:14:29,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:14:29,697 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;@638487ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:14:29,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:14:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 2232 states, 1455 states have (on average 1.3993127147766322) internal successors, (2036), 1506 states have internal predecessors, (2036), 611 states have call successors, (611), 165 states have call predecessors, (611), 164 states have return successors, (588), 577 states have call predecessors, (588), 588 states have call successors, (588) [2022-11-19 07:14:29,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-11-19 07:14:29,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:29,776 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 50, 50, 50, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:29,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -242108408, now seen corresponding path program 1 times [2022-11-19 07:14:29,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:29,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271489190] [2022-11-19 07:14:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:29,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12292 trivial. 0 not checked. [2022-11-19 07:14:32,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:32,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271489190] [2022-11-19 07:14:32,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271489190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:32,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:32,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:14:32,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076184218] [2022-11-19 07:14:32,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:14:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:32,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:14:32,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:14:32,750 INFO L87 Difference]: Start difference. First operand has 2232 states, 1455 states have (on average 1.3993127147766322) internal successors, (2036), 1506 states have internal predecessors, (2036), 611 states have call successors, (611), 165 states have call predecessors, (611), 164 states have return successors, (588), 577 states have call predecessors, (588), 588 states have call successors, (588) Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 07:14:34,109 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 07:14:38,229 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 07:14:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:38,508 INFO L93 Difference]: Finished difference Result 6390 states and 9461 transitions. [2022-11-19 07:14:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:14:38,511 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), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 658 [2022-11-19 07:14:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:38,558 INFO L225 Difference]: With dead ends: 6390 [2022-11-19 07:14:38,558 INFO L226 Difference]: Without dead ends: 4201 [2022-11-19 07:14:38,577 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 07:14:38,581 INFO L413 NwaCegarLoop]: 4886 mSDtfsCounter, 2986 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 7699 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:38,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2987 Valid, 7699 Invalid, 800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 797 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-19 07:14:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2022-11-19 07:14:38,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 4188. [2022-11-19 07:14:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 2769 states have (on average 1.3875045142650777) internal successors, (3842), 2820 states have internal predecessors, (3842), 1097 states have call successors, (1097), 323 states have call predecessors, (1097), 321 states have return successors, (1156), 1071 states have call predecessors, (1156), 1095 states have call successors, (1156) [2022-11-19 07:14:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 6095 transitions. [2022-11-19 07:14:38,965 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 6095 transitions. Word has length 658 [2022-11-19 07:14:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:38,975 INFO L495 AbstractCegarLoop]: Abstraction has 4188 states and 6095 transitions. [2022-11-19 07:14:38,975 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), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 07:14:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 6095 transitions. [2022-11-19 07:14:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2022-11-19 07:14:39,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:39,005 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 50, 50, 50, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:39,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:14:39,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:39,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:39,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1467195683, now seen corresponding path program 1 times [2022-11-19 07:14:39,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:39,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411522587] [2022-11-19 07:14:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:39,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12292 trivial. 0 not checked. [2022-11-19 07:14:40,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:40,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411522587] [2022-11-19 07:14:40,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411522587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:40,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:40,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:14:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932455959] [2022-11-19 07:14:40,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:40,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:14:40,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:40,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:14:40,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:14:40,506 INFO L87 Difference]: Start difference. First operand 4188 states and 6095 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-19 07:14:41,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:45,243 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 07:14:46,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:46,071 INFO L93 Difference]: Finished difference Result 12141 states and 17617 transitions. [2022-11-19 07:14:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:14:46,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 672 [2022-11-19 07:14:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:46,131 INFO L225 Difference]: With dead ends: 12141 [2022-11-19 07:14:46,131 INFO L226 Difference]: Without dead ends: 8062 [2022-11-19 07:14:46,157 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 07:14:46,158 INFO L413 NwaCegarLoop]: 3671 mSDtfsCounter, 3023 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3024 SdHoareTripleChecker+Valid, 6351 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:46,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3024 Valid, 6351 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 670 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-19 07:14:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8062 states. [2022-11-19 07:14:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8062 to 8052. [2022-11-19 07:14:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8052 states, 5323 states have (on average 1.3873755401089611) internal successors, (7385), 5425 states have internal predecessors, (7385), 2093 states have call successors, (2093), 638 states have call predecessors, (2093), 635 states have return successors, (2196), 2040 states have call predecessors, (2196), 2091 states have call successors, (2196) [2022-11-19 07:14:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8052 states to 8052 states and 11674 transitions. [2022-11-19 07:14:46,683 INFO L78 Accepts]: Start accepts. Automaton has 8052 states and 11674 transitions. Word has length 672 [2022-11-19 07:14:46,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:46,685 INFO L495 AbstractCegarLoop]: Abstraction has 8052 states and 11674 transitions. [2022-11-19 07:14:46,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-19 07:14:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 8052 states and 11674 transitions. [2022-11-19 07:14:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2022-11-19 07:14:46,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:46,712 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:46,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:14:46,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash 934123490, now seen corresponding path program 1 times [2022-11-19 07:14:46,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:46,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420685873] [2022-11-19 07:14:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:46,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16005 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16002 trivial. 0 not checked. [2022-11-19 07:14:48,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:48,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420685873] [2022-11-19 07:14:48,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420685873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:48,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:48,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:14:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624631066] [2022-11-19 07:14:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:48,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:14:48,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:48,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:14:48,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:14:48,177 INFO L87 Difference]: Start difference. First operand 8052 states and 11674 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-19 07:14:52,608 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 07:14:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:53,670 INFO L93 Difference]: Finished difference Result 19925 states and 28883 transitions. [2022-11-19 07:14:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:14:53,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 774 [2022-11-19 07:14:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:53,776 INFO L225 Difference]: With dead ends: 19925 [2022-11-19 07:14:53,776 INFO L226 Difference]: Without dead ends: 11982 [2022-11-19 07:14:53,820 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 07:14:53,821 INFO L413 NwaCegarLoop]: 5445 mSDtfsCounter, 2894 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2895 SdHoareTripleChecker+Valid, 8283 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:53,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2895 Valid, 8283 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 899 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-19 07:14:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11982 states. [2022-11-19 07:14:54,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11982 to 11972. [2022-11-19 07:14:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11972 states, 7933 states have (on average 1.3896382200932813) internal successors, (11024), 8086 states have internal predecessors, (11024), 3089 states have call successors, (3089), 953 states have call predecessors, (3089), 949 states have return successors, (3236), 3009 states have call predecessors, (3236), 3087 states have call successors, (3236) [2022-11-19 07:14:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11972 states to 11972 states and 17349 transitions. [2022-11-19 07:14:54,444 INFO L78 Accepts]: Start accepts. Automaton has 11972 states and 17349 transitions. Word has length 774 [2022-11-19 07:14:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:54,446 INFO L495 AbstractCegarLoop]: Abstraction has 11972 states and 17349 transitions. [2022-11-19 07:14:54,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-19 07:14:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 11972 states and 17349 transitions. [2022-11-19 07:14:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2022-11-19 07:14:54,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:54,473 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 55, 55, 55, 55, 55, 55, 12, 12, 12, 12, 12, 12, 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, 1, 1, 1, 1, 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 07:14:54,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:14:54,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:54,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash 269419726, now seen corresponding path program 1 times [2022-11-19 07:14:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:54,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535799655] [2022-11-19 07:14:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:54,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15314 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15314 trivial. 0 not checked. [2022-11-19 07:14:55,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:55,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535799655] [2022-11-19 07:14:55,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535799655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:55,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:55,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:14:55,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682976755] [2022-11-19 07:14:55,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:55,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:14:55,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:14:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:14:55,973 INFO L87 Difference]: Start difference. First operand 11972 states and 17349 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, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-19 07:15:01,029 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 07:15:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:01,279 INFO L93 Difference]: Finished difference Result 26488 states and 38292 transitions. [2022-11-19 07:15:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:01,280 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, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 811 [2022-11-19 07:15:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:01,373 INFO L225 Difference]: With dead ends: 26488 [2022-11-19 07:15:01,373 INFO L226 Difference]: Without dead ends: 14625 [2022-11-19 07:15:01,422 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 07:15:01,423 INFO L413 NwaCegarLoop]: 3351 mSDtfsCounter, 1107 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 6019 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:01,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 6019 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 702 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-19 07:15:01,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14625 states. [2022-11-19 07:15:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14625 to 14611. [2022-11-19 07:15:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14611 states, 9791 states have (on average 1.3970993769788582) internal successors, (13679), 9998 states have internal predecessors, (13679), 3612 states have call successors, (3612), 1212 states have call predecessors, (3612), 1207 states have return successors, (3796), 3504 states have call predecessors, (3796), 3610 states have call successors, (3796) [2022-11-19 07:15:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14611 states to 14611 states and 21087 transitions. [2022-11-19 07:15:02,078 INFO L78 Accepts]: Start accepts. Automaton has 14611 states and 21087 transitions. Word has length 811 [2022-11-19 07:15:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:02,079 INFO L495 AbstractCegarLoop]: Abstraction has 14611 states and 21087 transitions. [2022-11-19 07:15:02,080 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, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-19 07:15:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 14611 states and 21087 transitions. [2022-11-19 07:15:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2022-11-19 07:15:02,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:02,094 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:02,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:15:02,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:02,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1058355942, now seen corresponding path program 1 times [2022-11-19 07:15:02,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:02,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171073761] [2022-11-19 07:15:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:02,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16015 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16000 trivial. 0 not checked. [2022-11-19 07:15:06,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:06,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171073761] [2022-11-19 07:15:06,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171073761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:15:06,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407152601] [2022-11-19 07:15:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:06,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:06,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:06,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:15:06,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:15:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:09,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 10740 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:15:09,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16015 backedges. 3506 proven. 0 refuted. 0 times theorem prover too weak. 12509 trivial. 0 not checked. [2022-11-19 07:15:09,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:09,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407152601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:09,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:15:09,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-19 07:15:09,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344528677] [2022-11-19 07:15:09,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:09,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:15:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:15:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:15:09,504 INFO L87 Difference]: Start difference. First operand 14611 states and 21087 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-19 07:15:16,349 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 07:15:16,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:16,838 INFO L93 Difference]: Finished difference Result 43465 states and 62695 transitions. [2022-11-19 07:15:16,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:15:16,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 791 [2022-11-19 07:15:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:16,987 INFO L225 Difference]: With dead ends: 43465 [2022-11-19 07:15:16,988 INFO L226 Difference]: Without dead ends: 28856 [2022-11-19 07:15:17,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:15:17,044 INFO L413 NwaCegarLoop]: 5461 mSDtfsCounter, 2929 mSDsluCounter, 13761 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 19222 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:17,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2932 Valid, 19222 Invalid, 2107 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9 Valid, 2097 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 07:15:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28856 states. [2022-11-19 07:15:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28856 to 28794. [2022-11-19 07:15:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28794 states, 19331 states have (on average 1.398168744503647) internal successors, (27028), 19717 states have internal predecessors, (27028), 7075 states have call successors, (7075), 2396 states have call predecessors, (7075), 2387 states have return successors, (7446), 6853 states have call predecessors, (7446), 7073 states have call successors, (7446) [2022-11-19 07:15:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28794 states to 28794 states and 41549 transitions. [2022-11-19 07:15:18,813 INFO L78 Accepts]: Start accepts. Automaton has 28794 states and 41549 transitions. Word has length 791 [2022-11-19 07:15:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:18,815 INFO L495 AbstractCegarLoop]: Abstraction has 28794 states and 41549 transitions. [2022-11-19 07:15:18,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-19 07:15:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28794 states and 41549 transitions. [2022-11-19 07:15:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2022-11-19 07:15:18,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:18,831 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:18,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:19,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:19,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1360917833, now seen corresponding path program 1 times [2022-11-19 07:15:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:19,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988775379] [2022-11-19 07:15:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:19,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16015 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16000 trivial. 0 not checked. [2022-11-19 07:15:23,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:23,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988775379] [2022-11-19 07:15:23,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988775379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:15:23,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993361586] [2022-11-19 07:15:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:23,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:23,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:23,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:15:23,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:15:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:30,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 10921 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 07:15:30,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 16015 backedges. 3533 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2022-11-19 07:15:30,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:30,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993361586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:30,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:15:30,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-11-19 07:15:30,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709197745] [2022-11-19 07:15:30,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:30,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:15:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:15:30,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:15:30,336 INFO L87 Difference]: Start difference. First operand 28794 states and 41549 transitions. Second operand has 6 states, 4 states have (on average 36.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2022-11-19 07:15:37,592 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 07:15:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:38,302 INFO L93 Difference]: Finished difference Result 57538 states and 83145 transitions. [2022-11-19 07:15:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:15:38,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 36.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 800 [2022-11-19 07:15:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:38,472 INFO L225 Difference]: With dead ends: 57538 [2022-11-19 07:15:38,472 INFO L226 Difference]: Without dead ends: 28807 [2022-11-19 07:15:38,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:15:38,585 INFO L413 NwaCegarLoop]: 2841 mSDtfsCounter, 3 mSDsluCounter, 11331 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14172 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:38,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14172 Invalid, 1638 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 1624 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-19 07:15:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28807 states. [2022-11-19 07:15:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28807 to 28807. [2022-11-19 07:15:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28807 states, 19344 states have (on average 1.397901157981803) internal successors, (27041), 19730 states have internal predecessors, (27041), 7075 states have call successors, (7075), 2396 states have call predecessors, (7075), 2387 states have return successors, (7446), 6853 states have call predecessors, (7446), 7073 states have call successors, (7446) [2022-11-19 07:15:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28807 states to 28807 states and 41562 transitions. [2022-11-19 07:15:40,416 INFO L78 Accepts]: Start accepts. Automaton has 28807 states and 41562 transitions. Word has length 800 [2022-11-19 07:15:40,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:40,418 INFO L495 AbstractCegarLoop]: Abstraction has 28807 states and 41562 transitions. [2022-11-19 07:15:40,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 36.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2022-11-19 07:15:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 28807 states and 41562 transitions. [2022-11-19 07:15:40,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2022-11-19 07:15:40,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:40,434 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:40,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:40,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:40,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:40,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash 817411759, now seen corresponding path program 1 times [2022-11-19 07:15:40,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:40,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122378158] [2022-11-19 07:15:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:40,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16038 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16013 trivial. 0 not checked. [2022-11-19 07:15:44,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:44,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122378158] [2022-11-19 07:15:44,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122378158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:15:44,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658914811] [2022-11-19 07:15:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:44,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:44,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:44,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:15:44,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3461447-5859-45ea-885b-ba1082c51da0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:15:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:53,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 10983 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:15:53,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16038 backedges. 3548 proven. 1 refuted. 0 times theorem prover too weak. 12489 trivial. 0 not checked. [2022-11-19 07:15:53,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16038 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 16013 trivial. 0 not checked. [2022-11-19 07:15:54,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658914811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:54,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1075866590] [2022-11-19 07:15:54,910 INFO L159 IcfgInterpreter]: Started Sifa with 210 locations of interest [2022-11-19 07:15:54,910 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:15:54,916 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:15:54,922 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:15:54,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:16:40,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:16:41,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:16:42,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:16:42,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:16:44,075 INFO L217 Elim1Store]: Index analysis took 3526 ms [2022-11-19 07:25:24,439 WARN L233 SmtUtils]: Spent 8.67m on a formula simplification. DAG size of input: 6862 DAG size of output: 3157 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:25:24,457 INFO L321 Elim1Store]: treesize reduction 22935, result has 19.4 percent of original size [2022-11-19 07:25:24,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 268 select indices, 268 select index equivalence classes, 34724 disjoint index pairs (out of 35778 index pairs), introduced 268 new quantified variables, introduced 1322 case distinctions, treesize of input 1380 treesize of output 6361 [2022-11-19 07:25:57,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:57,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:25:58,004 INFO L217 Elim1Store]: Index analysis took 103 ms [2022-11-19 07:25:58,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 263 select indices, 263 select index equivalence classes, 35515 disjoint index pairs (out of 34453 index pairs), introduced 263 new quantified variables, introduced 0 case distinctions, treesize of input 1331 treesize of output 2125