./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--be2iscsi--be2iscsi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--be2iscsi--be2iscsi.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI --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 420af474850d23f3f2d1eaddb78c478fb6a14fcff2ada80d9108d342279e18ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:16:16,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:16:16,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:16:16,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:16:16,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:16:16,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:16:16,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:16:16,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:16:16,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:16:16,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:16:16,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:16:16,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:16:16,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:16:16,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:16:16,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:16:16,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:16:16,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:16:16,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:16:16,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:16:16,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:16:16,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:16:16,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:16:16,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:16:16,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:16:16,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:16:16,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:16:16,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:16:16,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:16:16,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:16:16,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:16:16,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:16:16,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:16:16,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:16:16,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:16:16,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:16:16,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:16:16,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:16:16,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:16:16,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:16:16,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:16:16,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:16:16,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:16:16,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:16:16,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:16:16,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:16:16,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:16:16,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:16:16,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:16:16,349 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:16:16,349 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:16:16,349 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:16:16,349 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:16:16,350 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:16:16,350 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:16:16,350 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:16:16,350 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:16:16,351 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:16:16,351 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:16:16,351 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:16:16,351 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:16:16,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:16:16,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:16:16,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:16:16,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:16:16,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:16:16,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:16:16,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:16:16,358 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:16:16,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:16:16,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:16:16,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:16:16,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:16:16,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:16:16,361 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:16:16,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:16:16,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:16:16,361 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:16:16,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:16:16,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:16:16,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:16:16,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 420af474850d23f3f2d1eaddb78c478fb6a14fcff2ada80d9108d342279e18ba [2022-11-03 02:16:16,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:16:16,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:16:16,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:16:16,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:16:16,703 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:16:16,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--be2iscsi--be2iscsi.ko-entry_point.cil.out.i [2022-11-03 02:16:16,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/data/e4a738ad7/2846dfbe7470419c953a5c80b19ef01a/FLAGfcd28d9b9 [2022-11-03 02:16:18,010 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:16:18,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--be2iscsi--be2iscsi.ko-entry_point.cil.out.i [2022-11-03 02:16:18,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/data/e4a738ad7/2846dfbe7470419c953a5c80b19ef01a/FLAGfcd28d9b9 [2022-11-03 02:16:18,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/data/e4a738ad7/2846dfbe7470419c953a5c80b19ef01a [2022-11-03 02:16:18,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:16:18,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:16:18,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:16:18,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:16:18,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:16:18,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:16:18" (1/1) ... [2022-11-03 02:16:18,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35cfb277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:18, skipping insertion in model container [2022-11-03 02:16:18,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:16:18" (1/1) ... [2022-11-03 02:16:18,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:16:18,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:16:25,765 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_696de13b-1e4b-4d64-af5f-3e070d6eed78/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--be2iscsi--be2iscsi.ko-entry_point.cil.out.i[772843,772856] [2022-11-03 02:16:25,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:16:25,929 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:16:27,141 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_696de13b-1e4b-4d64-af5f-3e070d6eed78/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--be2iscsi--be2iscsi.ko-entry_point.cil.out.i[772843,772856] [2022-11-03 02:16:27,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:16:27,498 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:16:27,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27 WrapperNode [2022-11-03 02:16:27,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:16:27,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:16:27,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:16:27,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:16:27,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:27,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:28,329 INFO L138 Inliner]: procedures = 634, calls = 9066, calls flagged for inlining = 273, calls inlined = 265, statements flattened = 20690 [2022-11-03 02:16:28,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:16:28,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:16:28,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:16:28,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:16:28,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:28,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:28,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:28,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:28,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:29,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:29,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:29,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:29,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:16:29,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:16:29,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:16:29,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:16:29,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (1/1) ... [2022-11-03 02:16:29,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:16:29,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:29,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:16:29,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:16:29,537 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_compl_use [2022-11-03 02:16:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_compl_use [2022-11-03 02:16:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure __iscsi_complete_pdu [2022-11-03 02:16:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __iscsi_complete_pdu [2022-11-03 02:16:29,538 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:16:29,538 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:16:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:16:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:16:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure free_io_sgl_handle [2022-11-03 02:16:29,539 INFO L138 BoogieDeclarations]: Found implementation of procedure free_io_sgl_handle [2022-11-03 02:16:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure be_mbox_notify_wait [2022-11-03 02:16:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mbox_notify_wait [2022-11-03 02:16:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-03 02:16:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-03 02:16:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:16:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:16:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:16:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:16:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_purge_eq [2022-11-03 02:16:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_purge_eq [2022-11-03 02:16:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-11-03 02:16:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-11-03 02:16:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure amap_get [2022-11-03 02:16:29,557 INFO L138 BoogieDeclarations]: Found implementation of procedure amap_get [2022-11-03 02:16:29,558 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:16:29,558 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:16:29,558 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-03 02:16:29,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-03 02:16:29,558 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_mcc_tag [2022-11-03 02:16:29,559 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_mcc_tag [2022-11-03 02:16:29,559 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_6 [2022-11-03 02:16:29,559 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_6 [2022-11-03 02:16:29,559 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:16:29,559 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:16:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_compl_is_new [2022-11-03 02:16:29,560 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_compl_is_new [2022-11-03 02:16:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_exec_nonemb_cmd [2022-11-03 02:16:29,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_exec_nonemb_cmd [2022-11-03 02:16:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-03 02:16:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-03 02:16:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_ue_detect [2022-11-03 02:16:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_ue_detect [2022-11-03 02:16:29,561 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 02:16:29,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 02:16:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:16:29,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:16:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_session_get_param [2022-11-03 02:16:29,562 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_session_get_param [2022-11-03 02:16:29,562 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-03 02:16:29,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-03 02:16:29,563 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_session_create [2022-11-03 02:16:29,563 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_session_create [2022-11-03 02:16:29,563 INFO L130 BoogieDeclarations]: Found specification of procedure swap_dws [2022-11-03 02:16:29,563 INFO L138 BoogieDeclarations]: Found implementation of procedure swap_dws [2022-11-03 02:16:29,564 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_process_all_cqs [2022-11-03 02:16:29,564 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_process_all_cqs [2022-11-03 02:16:29,564 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:16:29,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:16:29,564 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:16:29,564 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:16:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_page_addrs_prepare [2022-11-03 02:16:29,565 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_page_addrs_prepare [2022-11-03 02:16:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure free_mcc_tag [2022-11-03 02:16:29,565 INFO L138 BoogieDeclarations]: Found implementation of procedure free_mcc_tag [2022-11-03 02:16:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_enable_intr [2022-11-03 02:16:29,566 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_enable_intr [2022-11-03 02:16:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_session_destroy [2022-11-03 02:16:29,566 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_session_destroy [2022-11-03 02:16:29,566 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:16:29,566 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:16:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_cmd_reset_function [2022-11-03 02:16:29,567 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_cmd_reset_function [2022-11-03 02:16:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_free_mem [2022-11-03 02:16:29,567 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_free_mem [2022-11-03 02:16:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_conn_get_param [2022-11-03 02:16:29,567 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_conn_get_param [2022-11-03 02:16:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:16:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:16:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:16:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure nla_find [2022-11-03 02:16:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_find [2022-11-03 02:16:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_get_async_busy_list [2022-11-03 02:16:29,569 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_get_async_busy_list [2022-11-03 02:16:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_session_teardown [2022-11-03 02:16:29,569 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_session_teardown [2022-11-03 02:16:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:16:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:16:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_conn_stop [2022-11-03 02:16:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_conn_stop [2022-11-03 02:16:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:16:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:16:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_init_irqs [2022-11-03 02:16:29,571 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_init_irqs [2022-11-03 02:16:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure __rounddown_pow_of_two [2022-11-03 02:16:29,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __rounddown_pow_of_two [2022-11-03 02:16:29,571 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:16:29,571 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:16:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 02:16:29,572 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 02:16:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_cleanup_task [2022-11-03 02:16:29,572 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_cleanup_task [2022-11-03 02:16:29,572 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_conn_send_pdu [2022-11-03 02:16:29,573 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_conn_send_pdu [2022-11-03 02:16:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_eeh_err_detected [2022-11-03 02:16:29,573 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_eeh_err_detected [2022-11-03 02:16:29,573 INFO L130 BoogieDeclarations]: Found specification of procedure be_queue_free [2022-11-03 02:16:29,573 INFO L138 BoogieDeclarations]: Found implementation of procedure be_queue_free [2022-11-03 02:16:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-03 02:16:29,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-03 02:16:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:16:29,574 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_process_cq [2022-11-03 02:16:29,574 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_process_cq [2022-11-03 02:16:29,575 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-03 02:16:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-03 02:16:29,575 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:16:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:16:29,575 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:16:29,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:16:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:16:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure index_inc [2022-11-03 02:16:29,589 INFO L138 BoogieDeclarations]: Found implementation of procedure index_inc [2022-11-03 02:16:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_mgmt_sgl_handle [2022-11-03 02:16:29,590 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_mgmt_sgl_handle [2022-11-03 02:16:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure be_wrb_hdr_prepare [2022-11-03 02:16:29,590 INFO L138 BoogieDeclarations]: Found implementation of procedure be_wrb_hdr_prepare [2022-11-03 02:16:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2022-11-03 02:16:29,591 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2022-11-03 02:16:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:16:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure blk_iopoll_init [2022-11-03 02:16:29,591 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_iopoll_init [2022-11-03 02:16:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:16:29,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:16:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:16:29,592 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:16:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_hw_health_check [2022-11-03 02:16:29,592 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_hw_health_check [2022-11-03 02:16:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-11-03 02:16:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-11-03 02:16:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:16:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:16:29,593 INFO L130 BoogieDeclarations]: Found specification of procedure wrb_from_mccq [2022-11-03 02:16:29,593 INFO L138 BoogieDeclarations]: Found implementation of procedure wrb_from_mccq [2022-11-03 02:16:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_set_static_ip [2022-11-03 02:16:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_set_static_ip [2022-11-03 02:16:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-03 02:16:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-03 02:16:29,594 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-03 02:16:29,594 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-03 02:16:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure be_sgl_destroy_contiguous [2022-11-03 02:16:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure be_sgl_destroy_contiguous [2022-11-03 02:16:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure be2iscsi_iface_get_param [2022-11-03 02:16:29,595 INFO L138 BoogieDeclarations]: Found implementation of procedure be2iscsi_iface_get_param [2022-11-03 02:16:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure amap_set [2022-11-03 02:16:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure amap_set [2022-11-03 02:16:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 02:16:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 02:16:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:16:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:16:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:16:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:16:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_get [2022-11-03 02:16:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_get [2022-11-03 02:16:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_is_host_device [2022-11-03 02:16:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_is_host_device [2022-11-03 02:16:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-11-03 02:16:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-11-03 02:16:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_free_ep [2022-11-03 02:16:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_free_ep [2022-11-03 02:16:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_compl_process [2022-11-03 02:16:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_compl_process [2022-11-03 02:16:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_parse_pdu [2022-11-03 02:16:29,599 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_parse_pdu [2022-11-03 02:16:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_target [2022-11-03 02:16:29,599 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_target [2022-11-03 02:16:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_mccq_compl [2022-11-03 02:16:29,599 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_mccq_compl [2022-11-03 02:16:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:16:29,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:16:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_unmap_pci_function [2022-11-03 02:16:29,600 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_unmap_pci_function [2022-11-03 02:16:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:16:29,601 INFO L130 BoogieDeclarations]: Found specification of procedure embedded_payload [2022-11-03 02:16:29,601 INFO L138 BoogieDeclarations]: Found implementation of procedure embedded_payload [2022-11-03 02:16:29,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2022-11-03 02:16:29,601 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_build_be_sgl_arr [2022-11-03 02:16:29,601 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_build_be_sgl_arr [2022-11-03 02:16:29,601 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:16:29,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:16:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:16:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_task_xmit [2022-11-03 02:16:29,602 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_task_xmit [2022-11-03 02:16:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_conn_start [2022-11-03 02:16:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_conn_start [2022-11-03 02:16:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:16:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:16:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure fls_long [2022-11-03 02:16:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure fls_long [2022-11-03 02:16:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:16:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure nonembedded_sgl [2022-11-03 02:16:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure nonembedded_sgl [2022-11-03 02:16:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-03 02:16:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-03 02:16:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure queue_tail_inc [2022-11-03 02:16:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_tail_inc [2022-11-03 02:16:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_modify_gateway [2022-11-03 02:16:29,605 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_modify_gateway [2022-11-03 02:16:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_get_macaddr [2022-11-03 02:16:29,615 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_get_macaddr [2022-11-03 02:16:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-03 02:16:29,616 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-03 02:16:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_conn_get_stats [2022-11-03 02:16:29,616 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_conn_get_stats [2022-11-03 02:16:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure be_sgl_create_contiguous [2022-11-03 02:16:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure be_sgl_create_contiguous [2022-11-03 02:16:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_get_all_if_id [2022-11-03 02:16:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_get_all_if_id [2022-11-03 02:16:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_clean_port [2022-11-03 02:16:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_clean_port [2022-11-03 02:16:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_cmd_cq_create [2022-11-03 02:16:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_cmd_cq_create [2022-11-03 02:16:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure be_chk_reset_complete [2022-11-03 02:16:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure be_chk_reset_complete [2022-11-03 02:16:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:16:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:16:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:16:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:16:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_boot_destroy_kset [2022-11-03 02:16:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_boot_destroy_kset [2022-11-03 02:16:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure free_mgmt_sgl_handle [2022-11-03 02:16:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure free_mgmt_sgl_handle [2022-11-03 02:16:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure be_mbox_notify [2022-11-03 02:16:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mbox_notify [2022-11-03 02:16:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-03 02:16:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-03 02:16:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_alloc_cmd_data [2022-11-03 02:16:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_alloc_cmd_data [2022-11-03 02:16:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure be2iscsi_attr_is_visible [2022-11-03 02:16:29,621 INFO L138 BoogieDeclarations]: Found implementation of procedure be2iscsi_attr_is_visible [2022-11-03 02:16:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_bsg_request [2022-11-03 02:16:29,621 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_bsg_request [2022-11-03 02:16:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 02:16:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 02:16:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure be_queue_alloc [2022-11-03 02:16:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure be_queue_alloc [2022-11-03 02:16:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-03 02:16:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-03 02:16:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-03 02:16:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-03 02:16:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_create_iface [2022-11-03 02:16:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_create_iface [2022-11-03 02:16:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure queue_tail_node [2022-11-03 02:16:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_tail_node [2022-11-03 02:16:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-03 02:16:29,624 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-03 02:16:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:16:29,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:16:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 02:16:29,625 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 02:16:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:16:29,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:16:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:16:29,625 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:16:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:16:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:16:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_get_host_param [2022-11-03 02:16:29,626 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_get_host_param [2022-11-03 02:16:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:16:29,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:16:29,627 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_init_controller [2022-11-03 02:16:29,627 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_init_controller [2022-11-03 02:16:29,627 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_cleanup [2022-11-03 02:16:29,627 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_cleanup [2022-11-03 02:16:29,627 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 02:16:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 02:16:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure is_link_state_evt [2022-11-03 02:16:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure is_link_state_evt [2022-11-03 02:16:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_free_async_msg [2022-11-03 02:16:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_free_async_msg [2022-11-03 02:16:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 02:16:29,629 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 02:16:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_hdr_prepare [2022-11-03 02:16:29,629 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_hdr_prepare [2022-11-03 02:16:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_msix_enable [2022-11-03 02:16:29,629 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_msix_enable [2022-11-03 02:16:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-11-03 02:16:29,630 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-11-03 02:16:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_invalidate_icds [2022-11-03 02:16:29,630 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_invalidate_icds [2022-11-03 02:16:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:16:29,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:16:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-03 02:16:29,631 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-03 02:16:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:16:29,631 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:16:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:16:29,631 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:16:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-11-03 02:16:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-11-03 02:16:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure be2iscsi_iface_set_param [2022-11-03 02:16:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure be2iscsi_iface_set_param [2022-11-03 02:16:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:16:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:16:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2022-11-03 02:16:29,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2022-11-03 02:16:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_set_vlan [2022-11-03 02:16:29,633 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_set_vlan [2022-11-03 02:16:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_update_async_writables [2022-11-03 02:16:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_update_async_writables [2022-11-03 02:16:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 02:16:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 02:16:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_alloc_pdu [2022-11-03 02:16:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_alloc_pdu [2022-11-03 02:16:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 02:16:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 02:16:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_ep_connect [2022-11-03 02:16:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_ep_connect [2022-11-03 02:16:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_session_recovery_timedout [2022-11-03 02:16:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_session_recovery_timedout [2022-11-03 02:16:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_unregister_transport [2022-11-03 02:16:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_unregister_transport [2022-11-03 02:16:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:16:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:16:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:16:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 02:16:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 02:16:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_quiesce [2022-11-03 02:16:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_quiesce [2022-11-03 02:16:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure blk_iopoll_enable [2022-11-03 02:16:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_iopoll_enable [2022-11-03 02:16:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_6 [2022-11-03 02:16:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_6 [2022-11-03 02:16:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:16:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:16:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:16:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure blk_iopoll_disable [2022-11-03 02:16:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_iopoll_disable [2022-11-03 02:16:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_host_for_each_session [2022-11-03 02:16:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_host_for_each_session [2022-11-03 02:16:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_get_gateway [2022-11-03 02:16:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_get_gateway [2022-11-03 02:16:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_conn_create [2022-11-03 02:16:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_conn_create [2022-11-03 02:16:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_get_if_info [2022-11-03 02:16:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_get_if_info [2022-11-03 02:16:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_wrb_handle [2022-11-03 02:16:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_wrb_handle [2022-11-03 02:16:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure blk_iopoll_sched_prep [2022-11-03 02:16:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_iopoll_sched_prep [2022-11-03 02:16:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:16:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_error [2022-11-03 02:16:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_error [2022-11-03 02:16:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure be_fill_queue [2022-11-03 02:16:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure be_fill_queue [2022-11-03 02:16:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_get_params [2022-11-03 02:16:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_get_params [2022-11-03 02:16:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_notify [2022-11-03 02:16:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_notify [2022-11-03 02:16:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_async_link_state_process [2022-11-03 02:16:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_async_link_state_process [2022-11-03 02:16:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure nla_data [2022-11-03 02:16:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_data [2022-11-03 02:16:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 02:16:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 02:16:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:16:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:16:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_setup_boot_info [2022-11-03 02:16:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_setup_boot_info [2022-11-03 02:16:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:16:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:16:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_set_ip [2022-11-03 02:16:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_set_ip [2022-11-03 02:16:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_ring_cq_db [2022-11-03 02:16:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_ring_cq_db [2022-11-03 02:16:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_write_buffer [2022-11-03 02:16:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_write_buffer [2022-11-03 02:16:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dma_unmap [2022-11-03 02:16:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dma_unmap [2022-11-03 02:16:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_format_mac [2022-11-03 02:16:29,646 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_format_mac [2022-11-03 02:16:29,646 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:16:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:16:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_set_param [2022-11-03 02:16:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_set_param [2022-11-03 02:16:29,647 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_get_async_handle [2022-11-03 02:16:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_get_async_handle [2022-11-03 02:16:29,648 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_destroy_iface [2022-11-03 02:16:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_destroy_iface [2022-11-03 02:16:29,648 INFO L130 BoogieDeclarations]: Found specification of procedure free_wrb_handle [2022-11-03 02:16:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure free_wrb_handle [2022-11-03 02:16:29,648 INFO L130 BoogieDeclarations]: Found specification of procedure be_mbox_db_ready_wait [2022-11-03 02:16:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mbox_db_ready_wait [2022-11-03 02:16:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2022-11-03 02:16:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2022-11-03 02:16:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_cmd_q_destroy [2022-11-03 02:16:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_cmd_q_destroy [2022-11-03 02:16:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:16:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:16:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_post_async_buffers [2022-11-03 02:16:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_post_async_buffers [2022-11-03 02:16:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:16:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2022-11-03 02:16:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2022-11-03 02:16:29,651 INFO L130 BoogieDeclarations]: Found specification of procedure be_complete_nopin_resp [2022-11-03 02:16:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure be_complete_nopin_resp [2022-11-03 02:16:29,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:16:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:16:29,651 INFO L130 BoogieDeclarations]: Found specification of procedure find_num_cpus [2022-11-03 02:16:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure find_num_cpus [2022-11-03 02:16:29,652 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_eeh_reset [2022-11-03 02:16:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_eeh_reset [2022-11-03 02:16:29,652 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_ep_get_param [2022-11-03 02:16:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_ep_get_param [2022-11-03 02:16:29,652 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2022-11-03 02:16:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2022-11-03 02:16:29,653 INFO L130 BoogieDeclarations]: Found specification of procedure __ilog2_u32 [2022-11-03 02:16:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __ilog2_u32 [2022-11-03 02:16:29,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:16:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:16:29,653 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_ring_eq_db [2022-11-03 02:16:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_ring_eq_db [2022-11-03 02:16:29,654 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 02:16:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 02:16:29,654 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_host_free [2022-11-03 02:16:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_host_free [2022-11-03 02:16:29,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:16:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:16:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_3 [2022-11-03 02:16:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_3 [2022-11-03 02:16:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_create_ipv4_iface [2022-11-03 02:16:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_create_ipv4_iface [2022-11-03 02:16:29,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-03 02:16:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-03 02:16:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_shost [2022-11-03 02:16:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_shost [2022-11-03 02:16:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:16:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:16:29,656 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_destroy_endpoint [2022-11-03 02:16:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_destroy_endpoint [2022-11-03 02:16:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_9 [2022-11-03 02:16:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_9 [2022-11-03 02:16:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_6 [2022-11-03 02:16:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_6 [2022-11-03 02:16:29,657 INFO L130 BoogieDeclarations]: Found specification of procedure iscsi_conn_teardown [2022-11-03 02:16:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsi_conn_teardown [2022-11-03 02:16:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure blk_iopoll_sched [2022-11-03 02:16:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_iopoll_sched [2022-11-03 02:16:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_ep_poll [2022-11-03 02:16:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_ep_poll [2022-11-03 02:16:29,658 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_conn_bind [2022-11-03 02:16:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_conn_bind [2022-11-03 02:16:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure wrb_from_mbox [2022-11-03 02:16:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure wrb_from_mbox [2022-11-03 02:16:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure amap_mask [2022-11-03 02:16:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure amap_mask [2022-11-03 02:16:29,659 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_create_ipv6_iface [2022-11-03 02:16:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_create_ipv6_iface [2022-11-03 02:16:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_create_default_pdu_queue [2022-11-03 02:16:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_create_default_pdu_queue [2022-11-03 02:16:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 02:16:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 02:16:29,660 INFO L130 BoogieDeclarations]: Found specification of procedure be_encoded_q_len [2022-11-03 02:16:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure be_encoded_q_len [2022-11-03 02:16:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_fwd_async_msg [2022-11-03 02:16:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_fwd_async_msg [2022-11-03 02:16:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure mgmt_static_ip_modify [2022-11-03 02:16:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure mgmt_static_ip_modify [2022-11-03 02:16:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure hwi_process_default_pdu_ring [2022-11-03 02:16:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure hwi_process_default_pdu_ring [2022-11-03 02:16:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:16:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:16:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:16:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:16:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:16:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 02:16:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 02:16:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure beiscsi_free_mgmt_task_handles [2022-11-03 02:16:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure beiscsi_free_mgmt_task_handles [2022-11-03 02:16:29,663 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-03 02:16:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-03 02:16:32,026 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:16:32,032 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:16:32,551 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:17:03,164 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:17:14,676 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:17:14,676 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:17:14,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:14 BoogieIcfgContainer [2022-11-03 02:17:14,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:17:14,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:17:14,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:17:14,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:17:14,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:16:18" (1/3) ... [2022-11-03 02:17:14,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206b9514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:14, skipping insertion in model container [2022-11-03 02:17:14,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:27" (2/3) ... [2022-11-03 02:17:14,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206b9514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:17:14, skipping insertion in model container [2022-11-03 02:17:14,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:17:14" (3/3) ... [2022-11-03 02:17:14,701 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--be2iscsi--be2iscsi.ko-entry_point.cil.out.i [2022-11-03 02:17:14,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:17:14,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:17:14,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:17:14,884 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f08d012, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:17:14,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:17:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 4680 states, 2801 states have (on average 1.3106033559443055) internal successors, (3671), 2901 states have internal predecessors, (3671), 1648 states have call successors, (1648), 231 states have call predecessors, (1648), 230 states have return successors, (1626), 1612 states have call predecessors, (1626), 1626 states have call successors, (1626) [2022-11-03 02:17:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2022-11-03 02:17:15,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:15,135 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:15,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 890750779, now seen corresponding path program 1 times [2022-11-03 02:17:15,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:15,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905920706] [2022-11-03 02:17:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:15,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9685 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9685 trivial. 0 not checked. [2022-11-03 02:17:19,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:19,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905920706] [2022-11-03 02:17:19,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905920706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:19,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:19,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:17:19,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506190735] [2022-11-03 02:17:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:19,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:17:19,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:19,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:17:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:19,248 INFO L87 Difference]: Start difference. First operand has 4680 states, 2801 states have (on average 1.3106033559443055) internal successors, (3671), 2901 states have internal predecessors, (3671), 1648 states have call successors, (1648), 231 states have call predecessors, (1648), 230 states have return successors, (1626), 1612 states have call predecessors, (1626), 1626 states have call successors, (1626) Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2022-11-03 02:17:21,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:23,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:32,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:38,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:17:40,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:17:43,707 INFO L93 Difference]: Finished difference Result 12358 states and 18513 transitions. [2022-11-03 02:17:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:17:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 734 [2022-11-03 02:17:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:17:43,808 INFO L225 Difference]: With dead ends: 12358 [2022-11-03 02:17:43,808 INFO L226 Difference]: Without dead ends: 7748 [2022-11-03 02:17:43,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:17:43,860 INFO L413 NwaCegarLoop]: 7427 mSDtfsCounter, 4590 mSDsluCounter, 6774 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4590 SdHoareTripleChecker+Valid, 13543 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:17:43,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4590 Valid, 13543 Invalid, 1504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1497 Invalid, 4 Unknown, 0 Unchecked, 23.7s Time] [2022-11-03 02:17:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7748 states. [2022-11-03 02:17:44,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7748 to 7743. [2022-11-03 02:17:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7743 states, 4665 states have (on average 1.3016077170418006) internal successors, (6072), 4796 states have internal predecessors, (6072), 2672 states have call successors, (2672), 406 states have call predecessors, (2672), 405 states have return successors, (2671), 2650 states have call predecessors, (2671), 2671 states have call successors, (2671) [2022-11-03 02:17:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 11415 transitions. [2022-11-03 02:17:44,655 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 11415 transitions. Word has length 734 [2022-11-03 02:17:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:17:44,667 INFO L495 AbstractCegarLoop]: Abstraction has 7743 states and 11415 transitions. [2022-11-03 02:17:44,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2022-11-03 02:17:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 11415 transitions. [2022-11-03 02:17:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2022-11-03 02:17:44,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:17:44,716 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:17:44,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:17:44,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:17:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:17:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash -698541587, now seen corresponding path program 1 times [2022-11-03 02:17:44,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:17:44,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294186386] [2022-11-03 02:17:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:17:44,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:17:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:17:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9685 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9685 trivial. 0 not checked. [2022-11-03 02:17:48,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:17:48,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294186386] [2022-11-03 02:17:48,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294186386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:17:48,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:17:48,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:17:48,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611174155] [2022-11-03 02:17:48,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:17:48,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:17:48,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:17:48,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:17:48,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:17:48,127 INFO L87 Difference]: Start difference. First operand 7743 states and 11415 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2022-11-03 02:17:50,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:54,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:57,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:17:58,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:06,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:09,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:14,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:18:16,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:19,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 02:18:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:20,811 INFO L93 Difference]: Finished difference Result 15479 states and 22844 transitions. [2022-11-03 02:18:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:18:20,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 771 [2022-11-03 02:18:20,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:20,874 INFO L225 Difference]: With dead ends: 15479 [2022-11-03 02:18:20,874 INFO L226 Difference]: Without dead ends: 7871 [2022-11-03 02:18:20,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:20,914 INFO L413 NwaCegarLoop]: 6227 mSDtfsCounter, 124 mSDsluCounter, 13694 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 23 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 18619 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:20,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 18619 Invalid, 2004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1975 Invalid, 6 Unknown, 0 Unchecked, 32.2s Time] [2022-11-03 02:18:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7871 states. [2022-11-03 02:18:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7871 to 7747. [2022-11-03 02:18:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7747 states, 4669 states have (on average 1.3013493253373314) internal successors, (6076), 4800 states have internal predecessors, (6076), 2672 states have call successors, (2672), 406 states have call predecessors, (2672), 405 states have return successors, (2671), 2650 states have call predecessors, (2671), 2671 states have call successors, (2671) [2022-11-03 02:18:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7747 states to 7747 states and 11419 transitions. [2022-11-03 02:18:21,374 INFO L78 Accepts]: Start accepts. Automaton has 7747 states and 11419 transitions. Word has length 771 [2022-11-03 02:18:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:21,379 INFO L495 AbstractCegarLoop]: Abstraction has 7747 states and 11419 transitions. [2022-11-03 02:18:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2022-11-03 02:18:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 7747 states and 11419 transitions. [2022-11-03 02:18:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2022-11-03 02:18:21,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:21,400 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 26, 26, 26, 26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:21,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:18:21,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:21,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash -11251508, now seen corresponding path program 1 times [2022-11-03 02:18:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:21,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847258955] [2022-11-03 02:18:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9697 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9697 trivial. 0 not checked. [2022-11-03 02:18:23,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:23,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847258955] [2022-11-03 02:18:23,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847258955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:23,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:23,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:18:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146212596] [2022-11-03 02:18:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:18:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:18:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:18:23,958 INFO L87 Difference]: Start difference. First operand 7747 states and 11419 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2022-11-03 02:18:26,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:29,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:39,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:43,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:48,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:18:50,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:18:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:52,141 INFO L93 Difference]: Finished difference Result 15487 states and 22852 transitions. [2022-11-03 02:18:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:18:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 807 [2022-11-03 02:18:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:52,187 INFO L225 Difference]: With dead ends: 15487 [2022-11-03 02:18:52,188 INFO L226 Difference]: Without dead ends: 7875 [2022-11-03 02:18:52,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:18:52,224 INFO L413 NwaCegarLoop]: 6227 mSDtfsCounter, 124 mSDsluCounter, 13698 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 25 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 18619 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:52,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 18619 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1978 Invalid, 5 Unknown, 0 Unchecked, 27.8s Time] [2022-11-03 02:18:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2022-11-03 02:18:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 7747. [2022-11-03 02:18:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7747 states, 4669 states have (on average 1.3013493253373314) internal successors, (6076), 4800 states have internal predecessors, (6076), 2672 states have call successors, (2672), 406 states have call predecessors, (2672), 405 states have return successors, (2671), 2650 states have call predecessors, (2671), 2671 states have call successors, (2671) [2022-11-03 02:18:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7747 states to 7747 states and 11419 transitions. [2022-11-03 02:18:52,664 INFO L78 Accepts]: Start accepts. Automaton has 7747 states and 11419 transitions. Word has length 807 [2022-11-03 02:18:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:52,667 INFO L495 AbstractCegarLoop]: Abstraction has 7747 states and 11419 transitions. [2022-11-03 02:18:52,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2022-11-03 02:18:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7747 states and 11419 transitions. [2022-11-03 02:18:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2022-11-03 02:18:52,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:52,687 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 26, 26, 26, 26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:52,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:18:52,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 533981021, now seen corresponding path program 1 times [2022-11-03 02:18:52,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:52,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909143622] [2022-11-03 02:18:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9697 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9694 trivial. 0 not checked. [2022-11-03 02:18:54,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:54,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909143622] [2022-11-03 02:18:54,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909143622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:54,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:54,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:54,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865651162] [2022-11-03 02:18:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:54,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:54,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:54,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:54,925 INFO L87 Difference]: Start difference. First operand 7747 states and 11419 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (85), 3 states have call predecessors, (85), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-03 02:18:57,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:00,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:03,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:05,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:14,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:19:16,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:18,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:18,391 INFO L93 Difference]: Finished difference Result 10521 states and 15416 transitions. [2022-11-03 02:19:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:18,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (85), 3 states have call predecessors, (85), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 808 [2022-11-03 02:19:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:18,476 INFO L225 Difference]: With dead ends: 10521 [2022-11-03 02:19:18,476 INFO L226 Difference]: Without dead ends: 10518 [2022-11-03 02:19:18,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:18,487 INFO L413 NwaCegarLoop]: 7665 mSDtfsCounter, 5213 mSDsluCounter, 4328 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5213 SdHoareTripleChecker+Valid, 11619 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:18,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5213 Valid, 11619 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1178 Invalid, 3 Unknown, 0 Unchecked, 23.1s Time] [2022-11-03 02:19:18,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10518 states. [2022-11-03 02:19:19,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10518 to 10410. [2022-11-03 02:19:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10410 states, 6398 states have (on average 1.3185370428258831) internal successors, (8436), 6602 states have internal predecessors, (8436), 3358 states have call successors, (3358), 665 states have call predecessors, (3358), 653 states have return successors, (3449), 3284 states have call predecessors, (3449), 3357 states have call successors, (3449) [2022-11-03 02:19:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10410 states to 10410 states and 15243 transitions. [2022-11-03 02:19:19,096 INFO L78 Accepts]: Start accepts. Automaton has 10410 states and 15243 transitions. Word has length 808 [2022-11-03 02:19:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:19,098 INFO L495 AbstractCegarLoop]: Abstraction has 10410 states and 15243 transitions. [2022-11-03 02:19:19,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (85), 3 states have call predecessors, (85), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-03 02:19:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 10410 states and 15243 transitions. [2022-11-03 02:19:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2022-11-03 02:19:19,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:19,132 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 26, 26, 26, 26, 26, 26, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:19,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:19:19,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1087921535, now seen corresponding path program 1 times [2022-11-03 02:19:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:19,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790334604] [2022-11-03 02:19:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:19,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12649 trivial. 0 not checked. [2022-11-03 02:19:22,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:22,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790334604] [2022-11-03 02:19:22,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790334604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:22,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:22,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:19:22,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381677841] [2022-11-03 02:19:22,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:22,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:19:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:22,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:19:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:19:22,105 INFO L87 Difference]: Start difference. First operand 10410 states and 15243 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2022-11-03 02:19:24,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:27,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:30,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:32,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:36,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:19:40,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:44,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:48,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:19:51,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:19:53,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:53,431 INFO L93 Difference]: Finished difference Result 20697 states and 30302 transitions. [2022-11-03 02:19:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:19:53,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 857 [2022-11-03 02:19:53,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:53,567 INFO L225 Difference]: With dead ends: 20697 [2022-11-03 02:19:53,567 INFO L226 Difference]: Without dead ends: 10410 [2022-11-03 02:19:53,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:19:53,608 INFO L413 NwaCegarLoop]: 6205 mSDtfsCounter, 3 mSDsluCounter, 13721 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18610 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:53,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18610 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1983 Invalid, 6 Unknown, 0 Unchecked, 30.9s Time] [2022-11-03 02:19:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10410 states. [2022-11-03 02:19:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10410 to 10410. [2022-11-03 02:19:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10410 states, 6398 states have (on average 1.3179118474523288) internal successors, (8432), 6602 states have internal predecessors, (8432), 3358 states have call successors, (3358), 665 states have call predecessors, (3358), 653 states have return successors, (3449), 3284 states have call predecessors, (3449), 3357 states have call successors, (3449) [2022-11-03 02:19:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10410 states to 10410 states and 15239 transitions. [2022-11-03 02:19:54,114 INFO L78 Accepts]: Start accepts. Automaton has 10410 states and 15239 transitions. Word has length 857 [2022-11-03 02:19:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:54,115 INFO L495 AbstractCegarLoop]: Abstraction has 10410 states and 15239 transitions. [2022-11-03 02:19:54,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2022-11-03 02:19:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10410 states and 15239 transitions. [2022-11-03 02:19:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2022-11-03 02:19:54,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:54,147 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 26, 26, 26, 26, 26, 26, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:54,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:19:54,147 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:54,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:54,148 INFO L85 PathProgramCache]: Analyzing trace with hash 977718290, now seen corresponding path program 1 times [2022-11-03 02:19:54,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:54,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505090350] [2022-11-03 02:19:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:54,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13116 trivial. 0 not checked. [2022-11-03 02:19:57,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:57,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505090350] [2022-11-03 02:19:57,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505090350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:57,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:57,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460184096] [2022-11-03 02:19:57,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:57,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:57,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:57,481 INFO L87 Difference]: Start difference. First operand 10410 states and 15239 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-03 02:19:59,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:02,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:08,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:14,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:20:17,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:18,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:19,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:19,674 INFO L93 Difference]: Finished difference Result 15768 states and 23127 transitions. [2022-11-03 02:20:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:19,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 870 [2022-11-03 02:20:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:19,859 INFO L225 Difference]: With dead ends: 15768 [2022-11-03 02:20:19,859 INFO L226 Difference]: Without dead ends: 15765 [2022-11-03 02:20:19,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:19,871 INFO L413 NwaCegarLoop]: 7211 mSDtfsCounter, 5247 mSDsluCounter, 4693 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5247 SdHoareTripleChecker+Valid, 11454 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:19,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5247 Valid, 11454 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1184 Invalid, 4 Unknown, 0 Unchecked, 21.8s Time] [2022-11-03 02:20:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15765 states. [2022-11-03 02:20:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15765 to 15620. [2022-11-03 02:20:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15620 states, 9815 states have (on average 1.3384615384615384) internal successors, (13137), 10157 states have internal predecessors, (13137), 4751 states have call successors, (4751), 1089 states have call predecessors, (4751), 1053 states have return successors, (5019), 4575 states have call predecessors, (5019), 4750 states have call successors, (5019) [2022-11-03 02:20:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15620 states to 15620 states and 22907 transitions. [2022-11-03 02:20:20,683 INFO L78 Accepts]: Start accepts. Automaton has 15620 states and 22907 transitions. Word has length 870 [2022-11-03 02:20:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:20,684 INFO L495 AbstractCegarLoop]: Abstraction has 15620 states and 22907 transitions. [2022-11-03 02:20:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-03 02:20:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 15620 states and 22907 transitions. [2022-11-03 02:20:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2022-11-03 02:20:20,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:20,750 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 26, 26, 26, 26, 26, 26, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:20,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:20:20,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:20,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash 480035297, now seen corresponding path program 1 times [2022-11-03 02:20:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:20,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431429571] [2022-11-03 02:20:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13158 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13158 trivial. 0 not checked. [2022-11-03 02:20:24,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:24,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431429571] [2022-11-03 02:20:24,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431429571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:24,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:24,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:24,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916707206] [2022-11-03 02:20:24,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:24,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:24,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:24,180 INFO L87 Difference]: Start difference. First operand 15620 states and 22907 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2022-11-03 02:20:26,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:29,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:31,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:32,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:34,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:38,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:20:41,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:45,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:20:48,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:51,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:20:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:53,551 INFO L93 Difference]: Finished difference Result 18331 states and 26879 transitions. [2022-11-03 02:20:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:53,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 933 [2022-11-03 02:20:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:53,648 INFO L225 Difference]: With dead ends: 18331 [2022-11-03 02:20:53,648 INFO L226 Difference]: Without dead ends: 18328 [2022-11-03 02:20:53,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:53,660 INFO L413 NwaCegarLoop]: 7197 mSDtfsCounter, 5269 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5271 SdHoareTripleChecker+Valid, 11440 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:53,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5271 Valid, 11440 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1177 Invalid, 6 Unknown, 0 Unchecked, 28.8s Time] [2022-11-03 02:20:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18328 states. [2022-11-03 02:20:54,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18328 to 18152. [2022-11-03 02:20:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18152 states, 11473 states have (on average 1.3436764577704174) internal successors, (15416), 11881 states have internal predecessors, (15416), 5423 states have call successors, (5423), 1302 states have call predecessors, (5423), 1255 states have return successors, (5778), 5199 states have call predecessors, (5778), 5422 states have call successors, (5778) [2022-11-03 02:20:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18152 states to 18152 states and 26617 transitions. [2022-11-03 02:20:54,552 INFO L78 Accepts]: Start accepts. Automaton has 18152 states and 26617 transitions. Word has length 933 [2022-11-03 02:20:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:54,553 INFO L495 AbstractCegarLoop]: Abstraction has 18152 states and 26617 transitions. [2022-11-03 02:20:54,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 3 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2022-11-03 02:20:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 18152 states and 26617 transitions. [2022-11-03 02:20:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2022-11-03 02:20:54,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:54,668 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 27, 27, 26, 26, 26, 26, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:54,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:20:54,669 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash -149953771, now seen corresponding path program 1 times [2022-11-03 02:20:54,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:54,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882077511] [2022-11-03 02:20:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:54,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:55,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:20:55,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815396516] [2022-11-03 02:20:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:55,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:20:55,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:55,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:20:55,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:21:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:01,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 18464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:01,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9939 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 9852 trivial. 0 not checked. [2022-11-03 02:21:01,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:01,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:01,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882077511] [2022-11-03 02:21:01,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:21:01,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815396516] [2022-11-03 02:21:01,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815396516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:01,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:01,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:01,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976872989] [2022-11-03 02:21:01,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:01,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:01,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:01,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:01,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:01,851 INFO L87 Difference]: Start difference. First operand 18152 states and 26617 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2022-11-03 02:21:04,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:09,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:14,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:17,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:19,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:27,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:21:29,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:31,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 02:21:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:33,708 INFO L93 Difference]: Finished difference Result 51768 states and 75992 transitions. [2022-11-03 02:21:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:33,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 1089 [2022-11-03 02:21:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:33,951 INFO L225 Difference]: With dead ends: 51768 [2022-11-03 02:21:33,951 INFO L226 Difference]: Without dead ends: 33751 [2022-11-03 02:21:34,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1088 GetRequests, 1087 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:34,074 INFO L413 NwaCegarLoop]: 9200 mSDtfsCounter, 5972 mSDsluCounter, 6852 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5975 SdHoareTripleChecker+Valid, 15396 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:34,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5975 Valid, 15396 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1555 Invalid, 5 Unknown, 0 Unchecked, 30.7s Time] [2022-11-03 02:21:34,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33751 states. [2022-11-03 02:21:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33751 to 33719. [2022-11-03 02:21:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33719 states, 21401 states have (on average 1.3487220223354048) internal successors, (28864), 22166 states have internal predecessors, (28864), 9965 states have call successors, (9965), 2445 states have call predecessors, (9965), 2352 states have return successors, (10685), 9538 states have call predecessors, (10685), 9964 states have call successors, (10685) [2022-11-03 02:21:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33719 states to 33719 states and 49514 transitions. [2022-11-03 02:21:36,191 INFO L78 Accepts]: Start accepts. Automaton has 33719 states and 49514 transitions. Word has length 1089 [2022-11-03 02:21:36,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:36,192 INFO L495 AbstractCegarLoop]: Abstraction has 33719 states and 49514 transitions. [2022-11-03 02:21:36,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2022-11-03 02:21:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 33719 states and 49514 transitions. [2022-11-03 02:21:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1124 [2022-11-03 02:21:36,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:36,428 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 27, 27, 26, 26, 26, 26, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:36,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:36,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:36,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:36,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:36,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1893835725, now seen corresponding path program 1 times [2022-11-03 02:21:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:36,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119993445] [2022-11-03 02:21:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:36,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:38,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:21:38,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258309475] [2022-11-03 02:21:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:38,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:38,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:38,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:38,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:21:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:44,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 18674 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:21:44,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10362 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 9892 trivial. 0 not checked. [2022-11-03 02:21:45,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:21:45,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:45,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119993445] [2022-11-03 02:21:45,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:21:45,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258309475] [2022-11-03 02:21:45,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258309475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:45,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:45,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:21:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377888615] [2022-11-03 02:21:45,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:45,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:45,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:45,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:45,991 INFO L87 Difference]: Start difference. First operand 33719 states and 49514 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 3 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2022-11-03 02:21:48,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:51,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:21:56,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:01,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:03,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:05,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:22:08,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:10,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:10,991 INFO L93 Difference]: Finished difference Result 73993 states and 108761 transitions. [2022-11-03 02:22:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:10,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 3 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) Word has length 1123 [2022-11-03 02:22:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:11,262 INFO L225 Difference]: With dead ends: 73993 [2022-11-03 02:22:11,262 INFO L226 Difference]: Without dead ends: 44961 [2022-11-03 02:22:11,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 1121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:11,593 INFO L413 NwaCegarLoop]: 7398 mSDtfsCounter, 4359 mSDsluCounter, 6707 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 52 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 13451 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:11,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 13451 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1541 Invalid, 4 Unknown, 0 Unchecked, 23.6s Time] [2022-11-03 02:22:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44961 states. [2022-11-03 02:22:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44961 to 44923. [2022-11-03 02:22:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44923 states, 28761 states have (on average 1.3474844407357185) internal successors, (38755), 29771 states have internal predecessors, (38755), 13028 states have call successors, (13028), 3254 states have call predecessors, (13028), 3133 states have return successors, (13936), 12500 states have call predecessors, (13936), 13027 states have call successors, (13936) [2022-11-03 02:22:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44923 states to 44923 states and 65719 transitions. [2022-11-03 02:22:13,834 INFO L78 Accepts]: Start accepts. Automaton has 44923 states and 65719 transitions. Word has length 1123 [2022-11-03 02:22:13,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:13,836 INFO L495 AbstractCegarLoop]: Abstraction has 44923 states and 65719 transitions. [2022-11-03 02:22:13,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 3 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (126), 2 states have call predecessors, (126), 2 states have call successors, (126) [2022-11-03 02:22:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 44923 states and 65719 transitions. [2022-11-03 02:22:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1226 [2022-11-03 02:22:14,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:14,482 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 27, 27, 26, 26, 26, 26, 9, 9, 9, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:14,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:14,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:14,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1210896094, now seen corresponding path program 1 times [2022-11-03 02:22:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:14,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187290964] [2022-11-03 02:22:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:14,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:15,884 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:22:15,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958377859] [2022-11-03 02:22:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:15,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:15,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:22:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:22,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 19258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:22:22,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 13260 trivial. 0 not checked. [2022-11-03 02:22:22,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:22:22,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:22,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187290964] [2022-11-03 02:22:22,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:22:22,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958377859] [2022-11-03 02:22:22,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958377859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:22,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:22,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:22:22,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994169955] [2022-11-03 02:22:22,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:22,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:22:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:22:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:22:22,560 INFO L87 Difference]: Start difference. First operand 44923 states and 65719 transitions. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2022-11-03 02:22:24,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:32,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:22:33,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:35,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:37,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:45,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:47,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:50,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:56,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:22:58,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:00,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:10,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:23:13,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:17,295 INFO L93 Difference]: Finished difference Result 115219 states and 174665 transitions. [2022-11-03 02:23:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:23:17,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) Word has length 1225 [2022-11-03 02:23:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:17,765 INFO L225 Difference]: With dead ends: 115219 [2022-11-03 02:23:17,765 INFO L226 Difference]: Without dead ends: 74983 [2022-11-03 02:23:17,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1231 GetRequests, 1223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:23:17,914 INFO L413 NwaCegarLoop]: 7945 mSDtfsCounter, 6886 mSDsluCounter, 31702 mSDsCounter, 0 mSdLazyCounter, 3577 mSolverCounterSat, 1761 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7088 SdHoareTripleChecker+Valid, 36851 SdHoareTripleChecker+Invalid, 5345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1761 IncrementalHoareTripleChecker+Valid, 3577 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:17,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7088 Valid, 36851 Invalid, 5345 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1761 Valid, 3577 Invalid, 7 Unknown, 0 Unchecked, 51.8s Time] [2022-11-03 02:23:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74983 states. [2022-11-03 02:23:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74983 to 44947. [2022-11-03 02:23:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44947 states, 28785 states have (on average 1.3471947194719471) internal successors, (38779), 29795 states have internal predecessors, (38779), 13028 states have call successors, (13028), 3254 states have call predecessors, (13028), 3133 states have return successors, (13936), 12500 states have call predecessors, (13936), 13027 states have call successors, (13936) [2022-11-03 02:23:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44947 states to 44947 states and 65743 transitions. [2022-11-03 02:23:20,318 INFO L78 Accepts]: Start accepts. Automaton has 44947 states and 65743 transitions. Word has length 1225 [2022-11-03 02:23:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:20,320 INFO L495 AbstractCegarLoop]: Abstraction has 44947 states and 65743 transitions. [2022-11-03 02:23:20,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 2 states have call successors, (142), 2 states have call predecessors, (142), 2 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2022-11-03 02:23:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 44947 states and 65743 transitions. [2022-11-03 02:23:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2022-11-03 02:23:20,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:20,921 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 27, 27, 26, 26, 26, 26, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:21,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:21,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:23:21,148 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash 303356829, now seen corresponding path program 1 times [2022-11-03 02:23:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:21,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466696108] [2022-11-03 02:23:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:22,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:23:22,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549053877] [2022-11-03 02:23:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:22,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:22,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:22,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:23:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:28,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 19453 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:23:28,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13552 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 13280 trivial. 0 not checked. [2022-11-03 02:23:29,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:29,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:29,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466696108] [2022-11-03 02:23:29,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:23:29,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549053877] [2022-11-03 02:23:29,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549053877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:29,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:29,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:23:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463515414] [2022-11-03 02:23:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:29,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:23:29,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:29,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:23:29,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:23:29,181 INFO L87 Difference]: Start difference. First operand 44947 states and 65743 transitions. Second operand has 11 states, 10 states have (on average 31.6) internal successors, (316), 8 states have internal predecessors, (316), 3 states have call successors, (150), 2 states have call predecessors, (150), 5 states have return successors, (147), 6 states have call predecessors, (147), 3 states have call successors, (147) [2022-11-03 02:23:31,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:44,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:23:46,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:23:47,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:49,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:52,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:59,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:02,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:04,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:05,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:10,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:20,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:33,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:24:36,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:42,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:42,192 INFO L93 Difference]: Finished difference Result 88240 states and 129563 transitions. [2022-11-03 02:24:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:42,193 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 31.6) internal successors, (316), 8 states have internal predecessors, (316), 3 states have call successors, (150), 2 states have call predecessors, (150), 5 states have return successors, (147), 6 states have call predecessors, (147), 3 states have call successors, (147) Word has length 1247 [2022-11-03 02:24:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:42,440 INFO L225 Difference]: With dead ends: 88240 [2022-11-03 02:24:42,440 INFO L226 Difference]: Without dead ends: 47980 [2022-11-03 02:24:42,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1237 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:24:42,633 INFO L413 NwaCegarLoop]: 7233 mSDtfsCounter, 704 mSDsluCounter, 70542 mSDsCounter, 0 mSdLazyCounter, 7153 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 71449 SdHoareTripleChecker+Invalid, 7162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7153 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:42,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 71449 Invalid, 7162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 7153 Invalid, 7 Unknown, 0 Unchecked, 70.6s Time] [2022-11-03 02:24:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47980 states. [2022-11-03 02:24:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47980 to 44995. [2022-11-03 02:24:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44995 states, 28818 states have (on average 1.3467971406759665) internal successors, (38812), 29828 states have internal predecessors, (38812), 13031 states have call successors, (13031), 3254 states have call predecessors, (13031), 3145 states have return successors, (13999), 12515 states have call predecessors, (13999), 13030 states have call successors, (13999) [2022-11-03 02:24:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44995 states to 44995 states and 65842 transitions. [2022-11-03 02:24:44,792 INFO L78 Accepts]: Start accepts. Automaton has 44995 states and 65842 transitions. Word has length 1247 [2022-11-03 02:24:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:44,793 INFO L495 AbstractCegarLoop]: Abstraction has 44995 states and 65842 transitions. [2022-11-03 02:24:44,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 31.6) internal successors, (316), 8 states have internal predecessors, (316), 3 states have call successors, (150), 2 states have call predecessors, (150), 5 states have return successors, (147), 6 states have call predecessors, (147), 3 states have call successors, (147) [2022-11-03 02:24:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 44995 states and 65842 transitions. [2022-11-03 02:24:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1254 [2022-11-03 02:24:45,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:45,030 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 27, 27, 26, 26, 26, 26, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:45,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:45,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:24:45,233 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:45,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1613917654, now seen corresponding path program 1 times [2022-11-03 02:24:45,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:45,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817851460] [2022-11-03 02:24:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:46,663 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:24:46,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531682671] [2022-11-03 02:24:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:46,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:46,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:46,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:46,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:24:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:53,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 19462 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:24:53,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13552 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 13288 trivial. 0 not checked. [2022-11-03 02:24:53,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:53,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:53,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817851460] [2022-11-03 02:24:53,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:24:53,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531682671] [2022-11-03 02:24:53,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531682671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:53,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:53,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:24:53,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459470171] [2022-11-03 02:24:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:53,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:24:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:24:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:24:53,345 INFO L87 Difference]: Start difference. First operand 44995 states and 65842 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (149), 2 states have call predecessors, (149), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2022-11-03 02:24:55,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:58,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:25:02,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:08,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:10,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:15,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:25:17,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:19,958 INFO L93 Difference]: Finished difference Result 85465 states and 125686 transitions. [2022-11-03 02:25:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (149), 2 states have call predecessors, (149), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) Word has length 1253 [2022-11-03 02:25:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:20,170 INFO L225 Difference]: With dead ends: 85465 [2022-11-03 02:25:20,171 INFO L226 Difference]: Without dead ends: 45157 [2022-11-03 02:25:20,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:20,364 INFO L413 NwaCegarLoop]: 6220 mSDtfsCounter, 22 mSDsluCounter, 6866 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 12427 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:20,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 12427 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1322 Invalid, 6 Unknown, 0 Unchecked, 24.8s Time] [2022-11-03 02:25:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45157 states. [2022-11-03 02:25:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45157 to 45001. [2022-11-03 02:25:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45001 states, 28824 states have (on average 1.3467249514293644) internal successors, (38818), 29834 states have internal predecessors, (38818), 13031 states have call successors, (13031), 3254 states have call predecessors, (13031), 3145 states have return successors, (13999), 12515 states have call predecessors, (13999), 13030 states have call successors, (13999) [2022-11-03 02:25:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45001 states to 45001 states and 65848 transitions. [2022-11-03 02:25:22,336 INFO L78 Accepts]: Start accepts. Automaton has 45001 states and 65848 transitions. Word has length 1253 [2022-11-03 02:25:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:22,338 INFO L495 AbstractCegarLoop]: Abstraction has 45001 states and 65848 transitions. [2022-11-03 02:25:22,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (149), 2 states have call predecessors, (149), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2022-11-03 02:25:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 45001 states and 65848 transitions. [2022-11-03 02:25:22,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1259 [2022-11-03 02:25:22,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:22,568 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 27, 27, 26, 26, 26, 26, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:22,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:22,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash 527213550, now seen corresponding path program 1 times [2022-11-03 02:25:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:22,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732178109] [2022-11-03 02:25:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:22,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:23,870 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:25:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816664608] [2022-11-03 02:25:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:23,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:23,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:23,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:23,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:25:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:30,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 19483 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:25:30,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13552 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 13402 trivial. 0 not checked. [2022-11-03 02:25:30,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:30,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:30,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732178109] [2022-11-03 02:25:30,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:25:30,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816664608] [2022-11-03 02:25:30,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816664608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:30,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:30,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:30,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671558143] [2022-11-03 02:25:30,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:30,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:30,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:30,609 INFO L87 Difference]: Start difference. First operand 45001 states and 65848 transitions. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 3 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2022-11-03 02:25:32,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:37,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:25:40,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:42,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:48,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:51,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:53,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:58,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:02,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:26:04,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:08,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:10,846 INFO L93 Difference]: Finished difference Result 91327 states and 134479 transitions. [2022-11-03 02:26:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:26:10,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 3 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) Word has length 1258 [2022-11-03 02:26:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:11,090 INFO L225 Difference]: With dead ends: 91327 [2022-11-03 02:26:11,090 INFO L226 Difference]: Without dead ends: 51013 [2022-11-03 02:26:11,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1259 GetRequests, 1256 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:11,375 INFO L413 NwaCegarLoop]: 7509 mSDtfsCounter, 2112 mSDsluCounter, 15057 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 388 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 21205 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:11,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 21205 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2116 Invalid, 8 Unknown, 0 Unchecked, 37.9s Time] [2022-11-03 02:26:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51013 states. [2022-11-03 02:26:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51013 to 45010. [2022-11-03 02:26:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45010 states, 28830 states have (on average 1.3466527922303158) internal successors, (38824), 29840 states have internal predecessors, (38824), 13034 states have call successors, (13034), 3254 states have call predecessors, (13034), 3145 states have return successors, (14002), 12518 states have call predecessors, (14002), 13033 states have call successors, (14002) [2022-11-03 02:26:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45010 states to 45010 states and 65860 transitions. [2022-11-03 02:26:13,343 INFO L78 Accepts]: Start accepts. Automaton has 45010 states and 65860 transitions. Word has length 1258 [2022-11-03 02:26:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:13,345 INFO L495 AbstractCegarLoop]: Abstraction has 45010 states and 65860 transitions. [2022-11-03 02:26:13,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 3 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2022-11-03 02:26:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 45010 states and 65860 transitions. [2022-11-03 02:26:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2022-11-03 02:26:13,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:13,567 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 27, 27, 26, 26, 26, 26, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:13,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:13,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:26:13,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:13,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1644800869, now seen corresponding path program 1 times [2022-11-03 02:26:13,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:13,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030665649] [2022-11-03 02:26:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:13,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:14,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:26:14,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962308140] [2022-11-03 02:26:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:14,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:14,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:14,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:14,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:26:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:21,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 19539 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:26:21,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13552 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 13394 trivial. 0 not checked. [2022-11-03 02:26:22,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:22,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:22,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030665649] [2022-11-03 02:26:22,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:26:22,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962308140] [2022-11-03 02:26:22,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962308140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:22,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:22,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:26:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341217665] [2022-11-03 02:26:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:22,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:26:22,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:26:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:26:22,227 INFO L87 Difference]: Start difference. First operand 45010 states and 65860 transitions. Second operand has 8 states, 8 states have (on average 38.625) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (143), 4 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:26:24,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:32,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:26:34,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:26:36,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:38,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:40,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:43,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:49,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:51,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:53,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:59,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:00,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:03,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:08,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:10,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:13,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:24,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:27:26,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:30,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:32,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:34,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:35,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:37,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:41,522 INFO L93 Difference]: Finished difference Result 90958 states and 134798 transitions. [2022-11-03 02:27:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:27:41,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.625) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (143), 4 states have call predecessors, (143), 2 states have call successors, (143) Word has length 1260 [2022-11-03 02:27:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:41,743 INFO L225 Difference]: With dead ends: 90958 [2022-11-03 02:27:41,743 INFO L226 Difference]: Without dead ends: 50635 [2022-11-03 02:27:42,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1253 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:27:42,029 INFO L413 NwaCegarLoop]: 7380 mSDtfsCounter, 773 mSDsluCounter, 47570 mSDsCounter, 0 mSdLazyCounter, 5051 mSolverCounterSat, 4 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 50686 SdHoareTripleChecker+Invalid, 5066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5051 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:42,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 50686 Invalid, 5066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 5051 Invalid, 11 Unknown, 0 Unchecked, 76.9s Time] [2022-11-03 02:27:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50635 states. [2022-11-03 02:27:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50635 to 45034. [2022-11-03 02:27:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45034 states, 28851 states have (on average 1.3464004713874735) internal successors, (38845), 29855 states have internal predecessors, (38845), 13034 states have call successors, (13034), 3254 states have call predecessors, (13034), 3148 states have return successors, (14041), 12527 states have call predecessors, (14041), 13033 states have call successors, (14041) [2022-11-03 02:27:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45034 states to 45034 states and 65920 transitions. [2022-11-03 02:27:44,134 INFO L78 Accepts]: Start accepts. Automaton has 45034 states and 65920 transitions. Word has length 1260 [2022-11-03 02:27:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:44,135 INFO L495 AbstractCegarLoop]: Abstraction has 45034 states and 65920 transitions. [2022-11-03 02:27:44,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.625) internal successors, (309), 6 states have internal predecessors, (309), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (143), 4 states have call predecessors, (143), 2 states have call successors, (143) [2022-11-03 02:27:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 45034 states and 65920 transitions. [2022-11-03 02:27:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1272 [2022-11-03 02:27:44,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:44,614 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 27, 27, 26, 26, 26, 26, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:44,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:44,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 02:27:44,815 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash -836286304, now seen corresponding path program 1 times [2022-11-03 02:27:44,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:44,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679306212] [2022-11-03 02:27:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:44,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:45,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:27:45,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41749181] [2022-11-03 02:27:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:45,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:45,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:45,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:45,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:27:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:53,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 19569 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:27:53,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 13563 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 13337 trivial. 0 not checked. [2022-11-03 02:27:53,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:53,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:53,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679306212] [2022-11-03 02:27:53,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:27:53,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41749181] [2022-11-03 02:27:53,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41749181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:53,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:53,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:27:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416098635] [2022-11-03 02:27:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:53,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:27:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:27:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:27:53,543 INFO L87 Difference]: Start difference. First operand 45034 states and 65920 transitions. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 2 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2022-11-03 02:27:55,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:00,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:28:03,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:12,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:14,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:16,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:22,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:24,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:28:27,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:29,824 INFO L93 Difference]: Finished difference Result 93555 states and 138489 transitions. [2022-11-03 02:28:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:28:29,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 2 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 1271 [2022-11-03 02:28:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:30,053 INFO L225 Difference]: With dead ends: 93555 [2022-11-03 02:28:30,053 INFO L226 Difference]: Without dead ends: 53208 [2022-11-03 02:28:30,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1272 GetRequests, 1269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:28:30,336 INFO L413 NwaCegarLoop]: 7577 mSDtfsCounter, 1927 mSDsluCounter, 14114 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 626 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 20403 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:30,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 20403 Invalid, 2679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [626 Valid, 2046 Invalid, 7 Unknown, 0 Unchecked, 34.0s Time] [2022-11-03 02:28:30,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53208 states. [2022-11-03 02:28:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53208 to 45034. [2022-11-03 02:28:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45034 states, 28851 states have (on average 1.346192506325604) internal successors, (38839), 29855 states have internal predecessors, (38839), 13034 states have call successors, (13034), 3254 states have call predecessors, (13034), 3148 states have return successors, (14041), 12527 states have call predecessors, (14041), 13033 states have call successors, (14041) [2022-11-03 02:28:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45034 states to 45034 states and 65914 transitions. [2022-11-03 02:28:32,517 INFO L78 Accepts]: Start accepts. Automaton has 45034 states and 65914 transitions. Word has length 1271 [2022-11-03 02:28:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:32,518 INFO L495 AbstractCegarLoop]: Abstraction has 45034 states and 65914 transitions. [2022-11-03 02:28:32,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 2 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2022-11-03 02:28:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 45034 states and 65914 transitions. [2022-11-03 02:28:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2022-11-03 02:28:32,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:32,772 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 28, 28, 26, 26, 26, 26, 12, 12, 12, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:32,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:32,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:32,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash -552574548, now seen corresponding path program 1 times [2022-11-03 02:28:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:32,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879705919] [2022-11-03 02:28:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:32,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:34,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:28:34,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188440631] [2022-11-03 02:28:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:34,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:34,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:34,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:28:34,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:28:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:41,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 19894 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:28:41,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13748 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 13583 trivial. 0 not checked. [2022-11-03 02:28:42,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:42,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:42,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879705919] [2022-11-03 02:28:42,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:28:42,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188440631] [2022-11-03 02:28:42,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188440631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:42,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:42,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215106508] [2022-11-03 02:28:42,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:42,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:42,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:42,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:42,557 INFO L87 Difference]: Start difference. First operand 45034 states and 65914 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 3 states have call successors, (154), 3 states have call predecessors, (154), 2 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2022-11-03 02:28:44,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:49,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:28:51,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:53,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:56,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:57,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:01,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:04,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:08,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:12,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:14,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:29:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:17,383 INFO L93 Difference]: Finished difference Result 61038 states and 89116 transitions. [2022-11-03 02:29:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:17,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 3 states have call successors, (154), 3 states have call predecessors, (154), 2 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) Word has length 1309 [2022-11-03 02:29:17,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:17,391 INFO L225 Difference]: With dead ends: 61038 [2022-11-03 02:29:17,391 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:29:17,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1307 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:17,598 INFO L413 NwaCegarLoop]: 8098 mSDtfsCounter, 5158 mSDsluCounter, 5022 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5160 SdHoareTripleChecker+Valid, 12654 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:17,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5160 Valid, 12654 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1304 Invalid, 6 Unknown, 0 Unchecked, 32.5s Time] [2022-11-03 02:29:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:29:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:29:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:29:17,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1309 [2022-11-03 02:29:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:17,615 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:29:17,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 3 states have call successors, (154), 3 states have call predecessors, (154), 2 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2022-11-03 02:29:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:29:17,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:29:17,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:29:17,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:17,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696de13b-1e4b-4d64-af5f-3e070d6eed78/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:29:17,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.