./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/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_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7 --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 --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:03:43,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:03:43,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:03:43,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:03:43,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:03:43,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:03:43,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:03:43,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:03:43,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:03:43,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:03:43,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:03:43,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:03:43,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:03:43,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:03:43,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:03:43,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:03:43,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:03:43,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:03:43,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:03:43,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:03:43,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:03:43,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:03:43,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:03:43,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:03:43,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:03:43,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:03:43,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:03:43,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:03:43,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:03:43,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:03:43,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:03:43,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:03:43,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:03:43,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:03:43,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:03:43,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:03:43,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:03:43,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:03:43,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:03:43,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:03:43,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:03:43,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:03:43,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:03:43,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:03:43,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:03:43,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:03:43,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:03:43,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:03:43,362 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:03:43,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:03:43,362 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:03:43,362 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:03:43,362 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:03:43,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:03:43,363 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:03:43,363 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:03:43,363 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:03:43,363 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:03:43,364 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:03:43,364 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:03:43,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:03:43,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:03:43,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:03:43,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:03:43,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:03:43,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:03:43,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:03:43,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:03:43,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:03:43,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:03:43,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:03:43,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:03:43,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:03:43,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:03:43,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:03:43,368 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:03:43,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:03:43,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:03:43,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:03:43,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:03:43,369 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8248f52e54312770460b05c349f71bb63d094ef2f9e53f87d753bfc5b43661 [2021-11-25 20:03:43,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:03:43,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:03:43,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:03:43,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:03:43,666 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:03:43,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/../../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 [2021-11-25 20:03:43,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/data/4218e9cad/66b6ecfd782a498aaba4bdb12de692b8/FLAG9bec29b46 [2021-11-25 20:03:44,708 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:03:44,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/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 [2021-11-25 20:03:44,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/data/4218e9cad/66b6ecfd782a498aaba4bdb12de692b8/FLAG9bec29b46 [2021-11-25 20:03:45,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/data/4218e9cad/66b6ecfd782a498aaba4bdb12de692b8 [2021-11-25 20:03:45,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:03:45,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:03:45,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:03:45,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:03:45,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:03:45,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:03:45" (1/1) ... [2021-11-25 20:03:45,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea630e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:45, skipping insertion in model container [2021-11-25 20:03:45,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:03:45" (1/1) ... [2021-11-25 20:03:45,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:03:45,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:03:48,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/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] [2021-11-25 20:03:48,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:03:48,512 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:03:49,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/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] [2021-11-25 20:03:49,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:03:49,478 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:03:49,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49 WrapperNode [2021-11-25 20:03:49,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:03:49,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:03:49,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:03:49,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:03:49,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:49,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:49,934 INFO L137 Inliner]: procedures = 352, calls = 5376, calls flagged for inlining = 117, calls inlined = 101, statements flattened = 8639 [2021-11-25 20:03:49,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:03:49,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:03:49,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:03:49,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:03:49,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:49,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:50,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:50,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:50,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:50,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:50,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:50,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:03:50,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:03:50,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:03:50,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:03:50,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (1/1) ... [2021-11-25 20:03:50,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:03:50,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:03:50,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:03:50,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:03:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure part_get_fact_prot_info [2021-11-25 20:03:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure part_get_fact_prot_info [2021-11-25 20:03:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_mmap [2021-11-25 20:03:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_mmap [2021-11-25 20:03:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-11-25 20:03:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-11-25 20:03:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure part_write_oob [2021-11-25 20:03:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write_oob [2021-11-25 20:03:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_markbad [2021-11-25 20:03:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_markbad [2021-11-25 20:03:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2021-11-25 20:03:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2021-11-25 20:03:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_oob [2021-11-25 20:03:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_oob [2021-11-25 20:03:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-25 20:03:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_suspend [2021-11-25 20:03:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_suspend [2021-11-25 20:03:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:03:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:03:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:03:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:03:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_ecc_stats_errors_show [2021-11-25 20:03:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_ecc_stats_errors_show [2021-11-25 20:03:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:03:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:03:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_size_show [2021-11-25 20:03:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_size_show [2021-11-25 20:03:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 20:03:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 20:03:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-25 20:03:50,524 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-25 20:03:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:03:50,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:03:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_numeraseregions_show [2021-11-25 20:03:50,525 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_numeraseregions_show [2021-11-25 20:03:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure put_mtd_device [2021-11-25 20:03:50,526 INFO L138 BoogieDeclarations]: Found implementation of procedure put_mtd_device [2021-11-25 20:03:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_proc_open [2021-11-25 20:03:50,526 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_proc_open [2021-11-25 20:03:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-25 20:03:50,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-25 20:03:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_writeoob [2021-11-25 20:03:50,527 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_writeoob [2021-11-25 20:03:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2021-11-25 20:03:50,527 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2021-11-25 20:03:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure part_write_user_prot_reg [2021-11-25 20:03:50,528 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write_user_prot_reg [2021-11-25 20:03:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_get_user_prot_info [2021-11-25 20:03:50,529 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_get_user_prot_info [2021-11-25 20:03:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2021-11-25 20:03:50,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2021-11-25 20:03:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_flags_show [2021-11-25 20:03:50,530 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_flags_show [2021-11-25 20:03:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure part_read [2021-11-25 20:03:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read [2021-11-25 20:03:50,531 INFO L130 BoogieDeclarations]: Found specification of procedure concat_write_oob [2021-11-25 20:03:50,531 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_write_oob [2021-11-25 20:03:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 20:03:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 20:03:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 20:03:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 20:03:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure vm_iomap_memory [2021-11-25 20:03:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_user_prot_reg [2021-11-25 20:03:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_user_prot_reg [2021-11-25 20:03:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure part_panic_write [2021-11-25 20:03:50,534 INFO L138 BoogieDeclarations]: Found implementation of procedure part_panic_write [2021-11-25 20:03:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_ecc_step_size_show [2021-11-25 20:03:50,534 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_ecc_step_size_show [2021-11-25 20:03:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure concat_unlock [2021-11-25 20:03:50,534 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_unlock [2021-11-25 20:03:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:03:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:03:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_name_show [2021-11-25 20:03:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_name_show [2021-11-25 20:03:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~int~X~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:03:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~int~X~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:03:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:03:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:03:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_bbtblocks_show [2021-11-25 20:03:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_bbtblocks_show [2021-11-25 20:03:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 20:03:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 20:03:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip_or_eccerr [2021-11-25 20:03:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip_or_eccerr [2021-11-25 20:03:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure concat_sync [2021-11-25 20:03:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_sync [2021-11-25 20:03:50,538 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_locked [2021-11-25 20:03:50,538 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_locked [2021-11-25 20:03:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_partition_offset_show [2021-11-25 20:03:50,539 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_partition_offset_show [2021-11-25 20:03:50,539 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_isreserved [2021-11-25 20:03:50,539 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_isreserved [2021-11-25 20:03:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:03:50,540 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_open [2021-11-25 20:03:50,540 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_open [2021-11-25 20:03:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure concat_write [2021-11-25 20:03:50,541 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_write [2021-11-25 20:03:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_kmalloc_up_to [2021-11-25 20:03:50,541 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_kmalloc_up_to [2021-11-25 20:03:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~$Pointer$~TO~int [2021-11-25 20:03:50,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~$Pointer$~TO~int [2021-11-25 20:03:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_readoob [2021-11-25 20:03:50,542 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_readoob [2021-11-25 20:03:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip [2021-11-25 20:03:50,542 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip [2021-11-25 20:03:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure part_is_locked [2021-11-25 20:03:50,543 INFO L138 BoogieDeclarations]: Found implementation of procedure part_is_locked [2021-11-25 20:03:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_write [2021-11-25 20:03:50,543 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_write [2021-11-25 20:03:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:03:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure get_mtd_device [2021-11-25 20:03:50,545 INFO L138 BoogieDeclarations]: Found implementation of procedure get_mtd_device [2021-11-25 20:03:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-11-25 20:03:50,547 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-11-25 20:03:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_markbad [2021-11-25 20:03:50,548 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_markbad [2021-11-25 20:03:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure concat_resume [2021-11-25 20:03:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_resume [2021-11-25 20:03:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_ioctl [2021-11-25 20:03:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_ioctl [2021-11-25 20:03:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure part_unlock [2021-11-25 20:03:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure part_unlock [2021-11-25 20:03:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:03:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:03:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_fact_prot_reg [2021-11-25 20:03:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_fact_prot_reg [2021-11-25 20:03:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_sync [2021-11-25 20:03:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_sync [2021-11-25 20:03:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_ecc_stats_corrected_show [2021-11-25 20:03:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_ecc_stats_corrected_show [2021-11-25 20:03:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_div_by_ws [2021-11-25 20:03:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_div_by_ws [2021-11-25 20:03:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:03:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:03:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_unpoint [2021-11-25 20:03:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_unpoint [2021-11-25 20:03:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure __chk_range_not_ok [2021-11-25 20:03:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __chk_range_not_ok [2021-11-25 20:03:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_eccerr [2021-11-25 20:03:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_eccerr [2021-11-25 20:03:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-25 20:03:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-25 20:03:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 20:03:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 20:03:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure free_partition [2021-11-25 20:03:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure free_partition [2021-11-25 20:03:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 20:03:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 20:03:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 20:03:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 20:03:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure concat_erase [2021-11-25 20:03:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_erase [2021-11-25 20:03:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_erase_callback [2021-11-25 20:03:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_erase_callback [2021-11-25 20:03:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 20:03:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 20:03:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_isreserved [2021-11-25 20:03:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_isreserved [2021-11-25 20:03:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2021-11-25 20:03:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2021-11-25 20:03:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_fact_prot_reg [2021-11-25 20:03:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_fact_prot_reg [2021-11-25 20:03:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:03:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:03:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-25 20:03:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-25 20:03:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_resume [2021-11-25 20:03:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_resume [2021-11-25 20:03:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:03:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_subpagesize_show [2021-11-25 20:03:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_subpagesize_show [2021-11-25 20:03:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_cls_resume [2021-11-25 20:03:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_cls_resume [2021-11-25 20:03:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_add_partition_attrs [2021-11-25 20:03:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_add_partition_attrs [2021-11-25 20:03:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-25 20:03:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-25 20:03:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure add_mtd_device [2021-11-25 20:03:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure add_mtd_device [2021-11-25 20:03:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:03:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write_oob [2021-11-25 20:03:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write_oob [2021-11-25 20:03:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_type_show [2021-11-25 20:03:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_type_show [2021-11-25 20:03:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure part_write [2021-11-25 20:03:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write [2021-11-25 20:03:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure concat_lock [2021-11-25 20:03:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_lock [2021-11-25 20:03:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:03:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:03:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure register_mtd_user [2021-11-25 20:03:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure register_mtd_user [2021-11-25 20:03:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_oobsize_show [2021-11-25 20:03:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_oobsize_show [2021-11-25 20:03:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_lock_user_prot_reg [2021-11-25 20:03:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_lock_user_prot_reg [2021-11-25 20:03:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:03:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:03:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_partition [2021-11-25 20:03:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_partition [2021-11-25 20:03:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure concat_block_isbad [2021-11-25 20:03:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_block_isbad [2021-11-25 20:03:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_close [2021-11-25 20:03:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_close [2021-11-25 20:03:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:03:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:03:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write [2021-11-25 20:03:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write [2021-11-25 20:03:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_badblocks_show [2021-11-25 20:03:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_badblocks_show [2021-11-25 20:03:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure part_sync [2021-11-25 20:03:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure part_sync [2021-11-25 20:03:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure concat_suspend [2021-11-25 20:03:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_suspend [2021-11-25 20:03:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:03:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 20:03:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 20:03:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure __get_mtd_device [2021-11-25 20:03:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_mtd_device [2021-11-25 20:03:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_oob [2021-11-25 20:03:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_oob [2021-11-25 20:03:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-25 20:03:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-25 20:03:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-11-25 20:03:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-11-25 20:03:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure kill_mtd_super [2021-11-25 20:03:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_mtd_super [2021-11-25 20:03:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:03:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:03:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-25 20:03:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-25 20:03:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_writesize_show [2021-11-25 20:03:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_writesize_show [2021-11-25 20:03:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_isbad [2021-11-25 20:03:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_isbad [2021-11-25 20:03:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-25 20:03:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-25 20:03:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:03:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:03:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-25 20:03:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-25 20:03:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:03:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-25 20:03:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-25 20:03:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2021-11-25 20:03:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2021-11-25 20:03:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_erase [2021-11-25 20:03:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_erase [2021-11-25 20:03:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 20:03:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 20:03:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_erasesize_show [2021-11-25 20:03:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_erasesize_show [2021-11-25 20:03:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:03:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure concat_read [2021-11-25 20:03:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_read [2021-11-25 20:03:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure concat_read_oob [2021-11-25 20:03:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_read_oob [2021-11-25 20:03:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:03:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 20:03:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_destroy [2021-11-25 20:03:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_destroy [2021-11-25 20:03:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:03:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:03:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_release [2021-11-25 20:03:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_release [2021-11-25 20:03:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-25 20:03:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-25 20:03:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:03:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:03:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 20:03:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 20:03:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_bitflip_threshold_show [2021-11-25 20:03:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_bitflip_threshold_show [2021-11-25 20:03:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure __put_mtd_device [2021-11-25 20:03:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __put_mtd_device [2021-11-25 20:03:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_mod_by_eb [2021-11-25 20:03:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_mod_by_eb [2021-11-25 20:03:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 20:03:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 20:03:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_get_fact_prot_info [2021-11-25 20:03:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_get_fact_prot_info [2021-11-25 20:03:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-25 20:03:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-25 20:03:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_unlock [2021-11-25 20:03:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_unlock [2021-11-25 20:03:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure part_suspend [2021-11-25 20:03:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure part_suspend [2021-11-25 20:03:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-25 20:03:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-25 20:03:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure part_unpoint [2021-11-25 20:03:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure part_unpoint [2021-11-25 20:03:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_isbad [2021-11-25 20:03:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_isbad [2021-11-25 20:03:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read [2021-11-25 20:03:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read [2021-11-25 20:03:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure otp_select_filemode [2021-11-25 20:03:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure otp_select_filemode [2021-11-25 20:03:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_user_prot_reg [2021-11-25 20:03:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_user_prot_reg [2021-11-25 20:03:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure __mtd_next_device [2021-11-25 20:03:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __mtd_next_device [2021-11-25 20:03:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_lock [2021-11-25 20:03:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_lock [2021-11-25 20:03:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure del_mtd_device [2021-11-25 20:03:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure del_mtd_device [2021-11-25 20:03:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~int~TO~int [2021-11-25 20:03:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~int~TO~int [2021-11-25 20:03:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_partition [2021-11-25 20:03:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_partition [2021-11-25 20:03:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure part_erase [2021-11-25 20:03:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure part_erase [2021-11-25 20:03:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure concat_block_markbad [2021-11-25 20:03:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_block_markbad [2021-11-25 20:03:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure concat_dev_erase [2021-11-25 20:03:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_dev_erase [2021-11-25 20:03:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~TO~int [2021-11-25 20:03:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~TO~int [2021-11-25 20:03:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-11-25 20:03:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-11-25 20:03:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure part_resume [2021-11-25 20:03:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure part_resume [2021-11-25 20:03:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_cls_suspend [2021-11-25 20:03:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_cls_suspend [2021-11-25 20:03:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure part_lock_user_prot_reg [2021-11-25 20:03:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure part_lock_user_prot_reg [2021-11-25 20:03:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:03:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:03:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:03:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 20:03:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2021-11-25 20:03:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2021-11-25 20:03:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure part_lock [2021-11-25 20:03:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure part_lock [2021-11-25 20:03:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 20:03:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 20:03:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_panic_write [2021-11-25 20:03:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_panic_write [2021-11-25 20:03:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:03:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~~uint64_t~0~TO~int [2021-11-25 20:03:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~~uint64_t~0~TO~int [2021-11-25 20:03:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure part_get_user_prot_info [2021-11-25 20:03:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure part_get_user_prot_info [2021-11-25 20:03:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write_user_prot_reg [2021-11-25 20:03:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write_user_prot_reg [2021-11-25 20:03:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:03:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:03:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_ecc_strength_show [2021-11-25 20:03:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_ecc_strength_show [2021-11-25 20:03:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 20:03:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 20:03:51,698 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:03:51,703 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:03:52,267 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:04:03,495 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:04:05,894 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:04:05,894 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:04:05,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:04:05 BoogieIcfgContainer [2021-11-25 20:04:05,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:04:05,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:04:05,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:04:05,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:04:05,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:03:45" (1/3) ... [2021-11-25 20:04:05,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0540cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:04:05, skipping insertion in model container [2021-11-25 20:04:05,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:03:49" (2/3) ... [2021-11-25 20:04:05,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0540cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:04:05, skipping insertion in model container [2021-11-25 20:04:05,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:04:05" (3/3) ... [2021-11-25 20:04:05,914 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2021-11-25 20:04:05,923 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:04:05,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:04:05,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:04:05,992 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:04:05,993 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:04:06,069 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) [2021-11-25 20:04:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2021-11-25 20:04:06,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:06,127 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:04:06,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2116761983, now seen corresponding path program 1 times [2021-11-25 20:04:06,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:06,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765485929] [2021-11-25 20:04:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:06,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12292 trivial. 0 not checked. [2021-11-25 20:04:08,132 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:08,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765485929] [2021-11-25 20:04:08,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765485929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:08,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:08,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:08,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485439338] [2021-11-25 20:04:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:08,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:08,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:08,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:08,193 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) [2021-11-25 20:04:10,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:14,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:14,425 INFO L93 Difference]: Finished difference Result 6390 states and 9461 transitions. [2021-11-25 20:04:14,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:14,432 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 [2021-11-25 20:04:14,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:14,630 INFO L225 Difference]: With dead ends: 6390 [2021-11-25 20:04:14,631 INFO L226 Difference]: Without dead ends: 4201 [2021-11-25 20:04:14,649 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:04:14,652 INFO L933 BasicCegarLoop]: 4880 mSDtfsCounter, 2986 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 7690 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:14,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2987 Valid, 7690 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 807 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 20:04:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-11-25 20:04:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 4188. [2021-11-25 20:04:14,994 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) [2021-11-25 20:04:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 6095 transitions. [2021-11-25 20:04:15,056 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 6095 transitions. Word has length 658 [2021-11-25 20:04:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:15,065 INFO L470 AbstractCegarLoop]: Abstraction has 4188 states and 6095 transitions. [2021-11-25 20:04:15,066 INFO L471 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) [2021-11-25 20:04:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 6095 transitions. [2021-11-25 20:04:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2021-11-25 20:04:15,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:15,097 INFO L514 BasicCegarLoop]: 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, 1] [2021-11-25 20:04:15,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:04:15,097 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:15,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash -26075436, now seen corresponding path program 1 times [2021-11-25 20:04:15,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:15,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459162985] [2021-11-25 20:04:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:15,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12292 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12292 trivial. 0 not checked. [2021-11-25 20:04:16,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:16,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459162985] [2021-11-25 20:04:16,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459162985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:16,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:16,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:16,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274532614] [2021-11-25 20:04:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:16,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:16,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:16,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:16,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:16,054 INFO L87 Difference]: Start difference. First operand 4188 states and 6095 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-25 20:04:18,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:21,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:21,949 INFO L93 Difference]: Finished difference Result 12141 states and 17617 transitions. [2021-11-25 20:04:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:21,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 673 [2021-11-25 20:04:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:22,027 INFO L225 Difference]: With dead ends: 12141 [2021-11-25 20:04:22,027 INFO L226 Difference]: Without dead ends: 8062 [2021-11-25 20:04:22,052 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:04:22,054 INFO L933 BasicCegarLoop]: 3676 mSDtfsCounter, 2862 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 6513 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:22,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2863 Valid, 6513 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 681 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2021-11-25 20:04:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8062 states. [2021-11-25 20:04:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8062 to 8052. [2021-11-25 20:04:22,631 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) [2021-11-25 20:04:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8052 states to 8052 states and 11674 transitions. [2021-11-25 20:04:22,691 INFO L78 Accepts]: Start accepts. Automaton has 8052 states and 11674 transitions. Word has length 673 [2021-11-25 20:04:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:22,694 INFO L470 AbstractCegarLoop]: Abstraction has 8052 states and 11674 transitions. [2021-11-25 20:04:22,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-25 20:04:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 8052 states and 11674 transitions. [2021-11-25 20:04:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-11-25 20:04:22,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:22,732 INFO L514 BasicCegarLoop]: 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, 1] [2021-11-25 20:04:22,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:04:22,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1869009133, now seen corresponding path program 1 times [2021-11-25 20:04:22,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:22,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073418315] [2021-11-25 20:04:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:22,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16005 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16002 trivial. 0 not checked. [2021-11-25 20:04:23,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:23,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073418315] [2021-11-25 20:04:23,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073418315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:23,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:23,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:23,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430740351] [2021-11-25 20:04:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:23,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:23,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:23,685 INFO L87 Difference]: Start difference. First operand 8052 states and 11674 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-25 20:04:25,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:28,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:29,434 INFO L93 Difference]: Finished difference Result 19925 states and 28883 transitions. [2021-11-25 20:04:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 775 [2021-11-25 20:04:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:29,548 INFO L225 Difference]: With dead ends: 19925 [2021-11-25 20:04:29,548 INFO L226 Difference]: Without dead ends: 11982 [2021-11-25 20:04:29,599 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:04:29,603 INFO L933 BasicCegarLoop]: 5439 mSDtfsCounter, 2893 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 8274 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:29,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2894 Valid, 8274 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 908 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-25 20:04:29,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11982 states. [2021-11-25 20:04:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11982 to 11972. [2021-11-25 20:04:30,225 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) [2021-11-25 20:04:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11972 states to 11972 states and 17349 transitions. [2021-11-25 20:04:30,280 INFO L78 Accepts]: Start accepts. Automaton has 11972 states and 17349 transitions. Word has length 775 [2021-11-25 20:04:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:30,282 INFO L470 AbstractCegarLoop]: Abstraction has 11972 states and 17349 transitions. [2021-11-25 20:04:30,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-25 20:04:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 11972 states and 17349 transitions. [2021-11-25 20:04:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2021-11-25 20:04:30,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:30,297 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:04:30,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:04:30,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash 649926760, now seen corresponding path program 1 times [2021-11-25 20:04:30,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:30,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525356053] [2021-11-25 20:04:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:30,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 15314 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15314 trivial. 0 not checked. [2021-11-25 20:04:31,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:31,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525356053] [2021-11-25 20:04:31,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525356053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:31,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:31,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:04:31,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595506711] [2021-11-25 20:04:31,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:31,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:04:31,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:31,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:04:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:04:31,133 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) [2021-11-25 20:04:33,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:36,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:36,653 INFO L93 Difference]: Finished difference Result 26488 states and 38292 transitions. [2021-11-25 20:04:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:04:36,654 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 [2021-11-25 20:04:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:36,749 INFO L225 Difference]: With dead ends: 26488 [2021-11-25 20:04:36,750 INFO L226 Difference]: Without dead ends: 14625 [2021-11-25 20:04:36,802 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:04:36,803 INFO L933 BasicCegarLoop]: 3348 mSDtfsCounter, 1107 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 6013 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:36,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 6013 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 708 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 20:04:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14625 states. [2021-11-25 20:04:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14625 to 14611. [2021-11-25 20:04:37,311 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) [2021-11-25 20:04:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14611 states to 14611 states and 21087 transitions. [2021-11-25 20:04:37,375 INFO L78 Accepts]: Start accepts. Automaton has 14611 states and 21087 transitions. Word has length 811 [2021-11-25 20:04:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:37,377 INFO L470 AbstractCegarLoop]: Abstraction has 14611 states and 21087 transitions. [2021-11-25 20:04:37,377 INFO L471 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) [2021-11-25 20:04:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14611 states and 21087 transitions. [2021-11-25 20:04:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2021-11-25 20:04:37,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:37,394 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 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] [2021-11-25 20:04:37,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:04:37,395 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1037890339, now seen corresponding path program 1 times [2021-11-25 20:04:37,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:37,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665420906] [2021-11-25 20:04:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:37,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16016 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16001 trivial. 0 not checked. [2021-11-25 20:04:38,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:38,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665420906] [2021-11-25 20:04:38,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665420906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:04:38,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62323215] [2021-11-25 20:04:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:38,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:04:38,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:04:38,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:04:38,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:04:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:41,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 10694 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:04:41,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16016 backedges. 3506 proven. 0 refuted. 0 times theorem prover too weak. 12510 trivial. 0 not checked. [2021-11-25 20:04:42,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:04:42,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62323215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:42,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:04:42,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-25 20:04:42,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383808249] [2021-11-25 20:04:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:42,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:04:42,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:04:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:04:42,649 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) [2021-11-25 20:04:44,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:46,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:51,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:51,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:51,778 INFO L93 Difference]: Finished difference Result 43465 states and 62695 transitions. [2021-11-25 20:04:51,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:04:51,790 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 792 [2021-11-25 20:04:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:51,941 INFO L225 Difference]: With dead ends: 43465 [2021-11-25 20:04:51,941 INFO L226 Difference]: Without dead ends: 28856 [2021-11-25 20:04:51,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:04:51,994 INFO L933 BasicCegarLoop]: 5471 mSDtfsCounter, 2929 mSDsluCounter, 15269 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 19249 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:51,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2932 Valid, 19249 Invalid, 2131 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2120 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 20:04:52,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28856 states. [2021-11-25 20:04:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28856 to 28794. [2021-11-25 20:04:53,189 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) [2021-11-25 20:04:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28794 states to 28794 states and 41549 transitions. [2021-11-25 20:04:53,310 INFO L78 Accepts]: Start accepts. Automaton has 28794 states and 41549 transitions. Word has length 792 [2021-11-25 20:04:53,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:53,312 INFO L470 AbstractCegarLoop]: Abstraction has 28794 states and 41549 transitions. [2021-11-25 20:04:53,312 INFO L471 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) [2021-11-25 20:04:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 28794 states and 41549 transitions. [2021-11-25 20:04:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2021-11-25 20:04:53,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:53,329 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:04:53,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:04:53,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:04:53,547 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash 511714010, now seen corresponding path program 1 times [2021-11-25 20:04:53,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:53,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072474897] [2021-11-25 20:04:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:53,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16015 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16000 trivial. 0 not checked. [2021-11-25 20:04:54,737 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:54,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072474897] [2021-11-25 20:04:54,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072474897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:04:54,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109478465] [2021-11-25 20:04:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:54,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:04:54,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:04:54,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:04:54,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:05:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:00,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 10871 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:05:00,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16015 backedges. 3521 proven. 0 refuted. 0 times theorem prover too weak. 12494 trivial. 0 not checked. [2021-11-25 20:05:01,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:01,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109478465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:01,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:05:01,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-25 20:05:01,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295286520] [2021-11-25 20:05:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:01,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:05:01,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:05:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:05:01,780 INFO L87 Difference]: Start difference. First operand 28794 states and 41549 transitions. Second operand has 6 states, 4 states have (on average 35.0) internal successors, (140), 6 states have internal predecessors, (140), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2021-11-25 20:05:03,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:08,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:08,499 INFO L93 Difference]: Finished difference Result 57538 states and 83145 transitions. [2021-11-25 20:05:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:05:08,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 35.0) internal successors, (140), 6 states have internal predecessors, (140), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) Word has length 800 [2021-11-25 20:05:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:08,657 INFO L225 Difference]: With dead ends: 57538 [2021-11-25 20:05:08,658 INFO L226 Difference]: Without dead ends: 28807 [2021-11-25 20:05:09,081 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:05:09,083 INFO L933 BasicCegarLoop]: 2838 mSDtfsCounter, 3 mSDsluCounter, 12549 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14160 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:09,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 14160 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1636 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 20:05:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28807 states. [2021-11-25 20:05:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28807 to 28807. [2021-11-25 20:05:10,124 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) [2021-11-25 20:05:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28807 states to 28807 states and 41562 transitions. [2021-11-25 20:05:10,253 INFO L78 Accepts]: Start accepts. Automaton has 28807 states and 41562 transitions. Word has length 800 [2021-11-25 20:05:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:10,255 INFO L470 AbstractCegarLoop]: Abstraction has 28807 states and 41562 transitions. [2021-11-25 20:05:10,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 35.0) internal successors, (140), 6 states have internal predecessors, (140), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2021-11-25 20:05:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 28807 states and 41562 transitions. [2021-11-25 20:05:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2021-11-25 20:05:10,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:10,271 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:05:10,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:10,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:10,499 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:05:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1706468736, now seen corresponding path program 1 times [2021-11-25 20:05:10,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:10,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170080599] [2021-11-25 20:05:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:10,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16038 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16013 trivial. 0 not checked. [2021-11-25 20:05:12,040 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:12,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170080599] [2021-11-25 20:05:12,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170080599] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:05:12,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417263186] [2021-11-25 20:05:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:12,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:12,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:12,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:12,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e557b51-324a-4d78-89e0-564b0e27299f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:05:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:17,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 10933 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 20:05:17,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 16038 backedges. 3546 proven. 3 refuted. 0 times theorem prover too weak. 12489 trivial. 0 not checked. [2021-11-25 20:05:18,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16038 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 16013 trivial. 0 not checked. [2021-11-25 20:05:21,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417263186] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:21,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [340931764] [2021-11-25 20:05:21,118 INFO L159 IcfgInterpreter]: Started Sifa with 210 locations of interest [2021-11-25 20:05:21,119 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:05:21,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:05:21,130 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:05:21,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:05:54,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:05:55,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:05:56,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:05:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:05:58,190 INFO L244 Elim1Store]: Index analysis took 3619 ms