./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-32_7a-drivers--net--wireless--rndis_wlan.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/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_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--rndis_wlan.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/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_efbd2423-af97-476d-ab7d-4a369707c3a3/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 114d7004654a3d86a028c0b122f5dce364226bca3b84d6d8b6f812ccac52ec20 --- 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 01:57:28,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:57:28,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:57:28,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:57:28,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:57:28,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:57:28,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:57:28,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:57:28,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:57:28,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:57:28,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:57:28,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:57:28,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:57:28,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:57:28,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:57:28,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:57:28,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:57:28,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:57:28,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:57:28,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:57:28,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:57:28,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:57:28,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:57:28,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:57:28,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:57:28,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:57:28,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:57:28,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:57:28,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:57:28,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:57:28,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:57:28,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:57:28,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:57:28,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:57:28,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:57:28,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:57:28,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:57:28,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:57:28,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:57:28,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:57:28,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:57:28,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:57:28,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:57:28,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:57:28,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:57:28,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:57:28,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:57:28,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:57:28,537 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:57:28,537 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:57:28,538 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:57:28,538 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:57:28,538 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:57:28,539 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:57:28,539 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:57:28,539 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:57:28,540 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:57:28,540 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:57:28,540 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:57:28,540 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:57:28,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:57:28,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:57:28,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:57:28,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:57:28,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:57:28,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:57:28,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:57:28,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:57:28,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:57:28,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:57:28,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:57:28,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:28,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:57:28,544 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:57:28,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:57:28,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:57:28,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:57:28,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:57:28,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:57:28,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:57:28,546 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_efbd2423-af97-476d-ab7d-4a369707c3a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 114d7004654a3d86a028c0b122f5dce364226bca3b84d6d8b6f812ccac52ec20 [2022-11-03 01:57:28,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:57:28,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:57:28,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:57:28,887 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:57:28,888 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:57:28,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--rndis_wlan.ko-entry_point.cil.out.i [2022-11-03 01:57:28,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/data/13c64e952/ecafa1876f7f49f1b28dbe7cece40b06/FLAG02f314b3a [2022-11-03 01:57:30,051 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:57:30,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--rndis_wlan.ko-entry_point.cil.out.i [2022-11-03 01:57:30,119 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/data/13c64e952/ecafa1876f7f49f1b28dbe7cece40b06/FLAG02f314b3a [2022-11-03 01:57:30,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/data/13c64e952/ecafa1876f7f49f1b28dbe7cece40b06 [2022-11-03 01:57:30,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:57:30,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:57:30,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:30,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:57:30,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:57:30,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:30" (1/1) ... [2022-11-03 01:57:30,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91e420a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:30, skipping insertion in model container [2022-11-03 01:57:30,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:30" (1/1) ... [2022-11-03 01:57:30,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:57:30,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:57:34,092 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_efbd2423-af97-476d-ab7d-4a369707c3a3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--rndis_wlan.ko-entry_point.cil.out.i[447736,447749] [2022-11-03 01:57:34,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:34,461 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:57:34,960 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_efbd2423-af97-476d-ab7d-4a369707c3a3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--rndis_wlan.ko-entry_point.cil.out.i[447736,447749] [2022-11-03 01:57:34,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:35,269 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:57:35,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35 WrapperNode [2022-11-03 01:57:35,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:35,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:35,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:57:35,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:57:35,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:35,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:35,709 INFO L138 Inliner]: procedures = 361, calls = 4604, calls flagged for inlining = 125, calls inlined = 121, statements flattened = 8918 [2022-11-03 01:57:35,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:35,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:57:35,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:57:35,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:57:35,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:35,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:35,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:35,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:36,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:36,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:36,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:36,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:36,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:57:36,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:57:36,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:57:36,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:57:36,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (1/1) ... [2022-11-03 01:57:36,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:36,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:36,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:57:36,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbd2423-af97-476d-ab7d-4a369707c3a3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:57:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 01:57:36,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 01:57:36,375 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2022-11-03 01:57:36,375 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2022-11-03 01:57:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-03 01:57:36,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-03 01:57:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2022-11-03 01:57:36,376 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2022-11-03 01:57:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:57:36,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:57:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2022-11-03 01:57:36,377 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2022-11-03 01:57:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:57:36,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:57:36,377 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-03 01:57:36,377 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-03 01:57:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:57:36,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:57:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_power_mgmt [2022-11-03 01:57:36,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_power_mgmt [2022-11-03 01:57:36,378 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_get_station [2022-11-03 01:57:36,378 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_get_station [2022-11-03 01:57:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2022-11-03 01:57:36,379 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2022-11-03 01:57:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure eth_zero_addr [2022-11-03 01:57:36,379 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_zero_addr [2022-11-03 01:57:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2022-11-03 01:57:36,379 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2022-11-03 01:57:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 01:57:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 01:57:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2022-11-03 01:57:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2022-11-03 01:57:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2022-11-03 01:57:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2022-11-03 01:57:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2022-11-03 01:57:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2022-11-03 01:57:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:57:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:57:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_leave_ibss [2022-11-03 01:57:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_leave_ibss [2022-11-03 01:57:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 01:57:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 01:57:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2022-11-03 01:57:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2022-11-03 01:57:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-11-03 01:57:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-11-03 01:57:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_worker [2022-11-03 01:57:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_worker [2022-11-03 01:57:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2022-11-03 01:57:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2022-11-03 01:57:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_change_virtual_intf [2022-11-03 01:57:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_change_virtual_intf [2022-11-03 01:57:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_tx_power [2022-11-03 01:57:36,384 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_tx_power [2022-11-03 01:57:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2022-11-03 01:57:36,384 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2022-11-03 01:57:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_default_key [2022-11-03 01:57:36,384 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_default_key [2022-11-03 01:57:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_del_pmksa [2022-11-03 01:57:36,385 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_del_pmksa [2022-11-03 01:57:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2022-11-03 01:57:36,385 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2022-11-03 01:57:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:57:36,385 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:57:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:57:36,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:57:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-03 01:57:36,386 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-03 01:57:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-03 01:57:36,386 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-03 01:57:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_get_tx_power [2022-11-03 01:57:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_get_tx_power [2022-11-03 01:57:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2022-11-03 01:57:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2022-11-03 01:57:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2022-11-03 01:57:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2022-11-03 01:57:36,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:57:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:57:36,388 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_del_key [2022-11-03 01:57:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_del_key [2022-11-03 01:57:36,388 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2022-11-03 01:57:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2022-11-03 01:57:36,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:57:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:57:36,389 INFO L130 BoogieDeclarations]: Found specification of procedure eth_broadcast_addr [2022-11-03 01:57:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_broadcast_addr [2022-11-03 01:57:36,389 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:57:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:57:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2022-11-03 01:57:36,390 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2022-11-03 01:57:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 01:57:36,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 01:57:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 01:57:36,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 01:57:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_get_scan_results [2022-11-03 01:57:36,391 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_get_scan_results [2022-11-03 01:57:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:57:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:57:36,391 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:57:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_cqm_rssi_config [2022-11-03 01:57:36,391 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_cqm_rssi_config [2022-11-03 01:57:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2022-11-03 01:57:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2022-11-03 01:57:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_join_ibss [2022-11-03 01:57:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_join_ibss [2022-11-03 01:57:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2022-11-03 01:57:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2022-11-03 01:57:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2022-11-03 01:57:36,393 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2022-11-03 01:57:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2022-11-03 01:57:36,393 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2022-11-03 01:57:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-03 01:57:36,393 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-03 01:57:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:57:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2022-11-03 01:57:36,394 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2022-11-03 01:57:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_flush_pmksa [2022-11-03 01:57:36,394 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_flush_pmksa [2022-11-03 01:57:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-03 01:57:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-03 01:57:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 01:57:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 01:57:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2022-11-03 01:57:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2022-11-03 01:57:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:57:36,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:57:36,396 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2022-11-03 01:57:36,396 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2022-11-03 01:57:36,396 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2022-11-03 01:57:36,396 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2022-11-03 01:57:36,396 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 01:57:36,397 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 01:57:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:57:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:57:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-11-03 01:57:36,397 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-11-03 01:57:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2022-11-03 01:57:36,398 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2022-11-03 01:57:36,398 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2022-11-03 01:57:36,398 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2022-11-03 01:57:36,398 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2022-11-03 01:57:36,398 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2022-11-03 01:57:36,398 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 01:57:36,398 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 01:57:36,399 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2022-11-03 01:57:36,399 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2022-11-03 01:57:36,399 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:57:36,399 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:57:36,399 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 01:57:36,399 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 01:57:36,399 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:57:36,400 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:57:36,400 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2022-11-03 01:57:36,400 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2022-11-03 01:57:36,400 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2022-11-03 01:57:36,400 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2022-11-03 01:57:36,400 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 01:57:36,400 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 01:57:36,401 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2022-11-03 01:57:36,401 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2022-11-03 01:57:36,401 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2022-11-03 01:57:36,401 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2022-11-03 01:57:36,401 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 01:57:36,401 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 01:57:36,402 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2022-11-03 01:57:36,402 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2022-11-03 01:57:36,402 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 01:57:36,402 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 01:57:36,402 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-03 01:57:36,402 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-03 01:57:36,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:57:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_pmksa [2022-11-03 01:57:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_pmksa [2022-11-03 01:57:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2022-11-03 01:57:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2022-11-03 01:57:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:57:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2022-11-03 01:57:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2022-11-03 01:57:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-11-03 01:57:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-11-03 01:57:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure get_current_channel [2022-11-03 01:57:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current_channel [2022-11-03 01:57:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2022-11-03 01:57:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2022-11-03 01:57:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:57:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-03 01:57:36,405 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-03 01:57:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2022-11-03 01:57:36,405 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2022-11-03 01:57:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:57:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:57:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2022-11-03 01:57:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2022-11-03 01:57:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:57:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:57:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2022-11-03 01:57:36,407 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2022-11-03 01:57:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2022-11-03 01:57:36,407 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2022-11-03 01:57:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2022-11-03 01:57:36,407 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2022-11-03 01:57:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:57:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2022-11-03 01:57:36,408 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2022-11-03 01:57:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2022-11-03 01:57:36,408 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2022-11-03 01:57:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:57:36,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:57:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:57:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:57:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_command_lock_of_rndis_wlan_private [2022-11-03 01:57:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_command_lock_of_rndis_wlan_private [2022-11-03 01:57:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2022-11-03 01:57:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2022-11-03 01:57:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2022-11-03 01:57:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2022-11-03 01:57:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:57:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_command_lock_of_rndis_wlan_private [2022-11-03 01:57:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_command_lock_of_rndis_wlan_private [2022-11-03 01:57:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2022-11-03 01:57:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2022-11-03 01:57:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2022-11-03 01:57:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2022-11-03 01:57:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2022-11-03 01:57:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2022-11-03 01:57:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:57:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:57:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:57:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2022-11-03 01:57:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2022-11-03 01:57:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2022-11-03 01:57:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2022-11-03 01:57:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2022-11-03 01:57:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2022-11-03 01:57:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:57:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2022-11-03 01:57:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2022-11-03 01:57:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-11-03 01:57:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-11-03 01:57:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2022-11-03 01:57:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2022-11-03 01:57:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_device_poller [2022-11-03 01:57:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_device_poller [2022-11-03 01:57:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2022-11-03 01:57:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2022-11-03 01:57:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_add_key [2022-11-03 01:57:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_add_key [2022-11-03 01:57:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 01:57:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 01:57:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2022-11-03 01:57:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2022-11-03 01:57:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2022-11-03 01:57:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2022-11-03 01:57:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 01:57:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 01:57:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 01:57:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 01:57:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2022-11-03 01:57:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2022-11-03 01:57:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2022-11-03 01:57:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2022-11-03 01:57:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2022-11-03 01:57:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2022-11-03 01:57:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2022-11-03 01:57:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2022-11-03 01:57:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2022-11-03 01:57:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2022-11-03 01:57:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2022-11-03 01:57:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2022-11-03 01:57:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-03 01:57:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-03 01:57:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 01:57:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 01:57:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_scan [2022-11-03 01:57:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_scan [2022-11-03 01:57:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:57:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 01:57:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 01:57:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2022-11-03 01:57:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2022-11-03 01:57:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-03 01:57:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-03 01:57:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:57:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:57:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_dump_station [2022-11-03 01:57:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_dump_station [2022-11-03 01:57:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:57:36,421 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:57:37,674 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:57:37,683 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:57:40,310 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:58:03,104 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:58:05,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:58:05,796 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:58:05,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:58:05 BoogieIcfgContainer [2022-11-03 01:58:05,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:58:05,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:58:05,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:58:05,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:58:05,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:57:30" (1/3) ... [2022-11-03 01:58:05,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec90e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:58:05, skipping insertion in model container [2022-11-03 01:58:05,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:35" (2/3) ... [2022-11-03 01:58:05,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec90e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:58:05, skipping insertion in model container [2022-11-03 01:58:05,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:58:05" (3/3) ... [2022-11-03 01:58:05,821 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--rndis_wlan.ko-entry_point.cil.out.i [2022-11-03 01:58:05,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:58:05,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:58:05,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:58:06,008 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;@4e598094, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:58:06,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:58:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 2360 states, 1474 states have (on average 1.353459972862958) internal successors, (1995), 1502 states have internal predecessors, (1995), 749 states have call successors, (749), 136 states have call predecessors, (749), 135 states have return successors, (738), 738 states have call predecessors, (738), 738 states have call successors, (738) [2022-11-03 01:58:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-03 01:58:06,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:06,079 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:06,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:06,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1468071289, now seen corresponding path program 1 times [2022-11-03 01:58:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:06,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123360384] [2022-11-03 01:58:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3832 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3832 trivial. 0 not checked. [2022-11-03 01:58:09,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:09,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123360384] [2022-11-03 01:58:09,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123360384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:09,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:09,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:09,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687382313] [2022-11-03 01:58:09,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:09,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:09,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:09,301 INFO L87 Difference]: Start difference. First operand has 2360 states, 1474 states have (on average 1.353459972862958) internal successors, (1995), 1502 states have internal predecessors, (1995), 749 states have call successors, (749), 136 states have call predecessors, (749), 135 states have return successors, (738), 738 states have call predecessors, (738), 738 states have call successors, (738) Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2022-11-03 01:58:11,490 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 01:58:15,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:17,449 WARN L539 Checker$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 01:58:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:19,671 INFO L93 Difference]: Finished difference Result 6847 states and 10576 transitions. [2022-11-03 01:58:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:19,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 474 [2022-11-03 01:58:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:19,746 INFO L225 Difference]: With dead ends: 6847 [2022-11-03 01:58:19,746 INFO L226 Difference]: Without dead ends: 4552 [2022-11-03 01:58:19,787 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 01:58:19,791 INFO L413 NwaCegarLoop]: 3888 mSDtfsCounter, 3259 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 7042 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:19,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3269 Valid, 7042 Invalid, 632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 626 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 01:58:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2022-11-03 01:58:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4548. [2022-11-03 01:58:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 2871 states have (on average 1.3497039359108325) internal successors, (3875), 2896 states have internal predecessors, (3875), 1409 states have call successors, (1409), 268 states have call predecessors, (1409), 267 states have return successors, (1413), 1403 states have call predecessors, (1413), 1403 states have call successors, (1413) [2022-11-03 01:58:20,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 6697 transitions. [2022-11-03 01:58:20,414 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 6697 transitions. Word has length 474 [2022-11-03 01:58:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:20,416 INFO L495 AbstractCegarLoop]: Abstraction has 4548 states and 6697 transitions. [2022-11-03 01:58:20,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2022-11-03 01:58:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 6697 transitions. [2022-11-03 01:58:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-11-03 01:58:20,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:20,436 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 20, 20, 20, 20, 20, 20, 20, 20, 20, 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] [2022-11-03 01:58:20,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:58:20,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:20,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash -637324218, now seen corresponding path program 1 times [2022-11-03 01:58:20,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:20,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506405336] [2022-11-03 01:58:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3834 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3834 trivial. 0 not checked. [2022-11-03 01:58:21,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:21,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506405336] [2022-11-03 01:58:21,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506405336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:21,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:21,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713543244] [2022-11-03 01:58:21,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:21,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:21,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:21,869 INFO L87 Difference]: Start difference. First operand 4548 states and 6697 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 01:58:23,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:27,139 WARN L539 Checker$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 01:58:29,335 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 01:58:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:31,923 INFO L93 Difference]: Finished difference Result 13236 states and 19463 transitions. [2022-11-03 01:58:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:31,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 487 [2022-11-03 01:58:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:32,152 INFO L225 Difference]: With dead ends: 13236 [2022-11-03 01:58:32,152 INFO L226 Difference]: Without dead ends: 8781 [2022-11-03 01:58:32,186 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 01:58:32,188 INFO L413 NwaCegarLoop]: 3846 mSDtfsCounter, 3116 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 6896 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:32,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3126 Valid, 6896 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 707 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2022-11-03 01:58:32,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8781 states. [2022-11-03 01:58:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8781 to 8767. [2022-11-03 01:58:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 5534 states have (on average 1.3471268521864836) internal successors, (7455), 5580 states have internal predecessors, (7455), 2703 states have call successors, (2703), 530 states have call predecessors, (2703), 529 states have return successors, (2727), 2696 states have call predecessors, (2727), 2697 states have call successors, (2727) [2022-11-03 01:58:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 12885 transitions. [2022-11-03 01:58:32,757 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 12885 transitions. Word has length 487 [2022-11-03 01:58:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:32,762 INFO L495 AbstractCegarLoop]: Abstraction has 8767 states and 12885 transitions. [2022-11-03 01:58:32,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 01:58:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 12885 transitions. [2022-11-03 01:58:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-03 01:58:32,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:32,780 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 20, 20, 20, 20, 20, 20, 20, 20, 20, 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] [2022-11-03 01:58:32,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:58:32,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1422470352, now seen corresponding path program 1 times [2022-11-03 01:58:32,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395645072] [2022-11-03 01:58:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:32,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3834 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3834 trivial. 0 not checked. [2022-11-03 01:58:35,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:36,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395645072] [2022-11-03 01:58:36,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395645072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:36,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:36,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:36,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622155994] [2022-11-03 01:58:36,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:36,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:36,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:36,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:36,006 INFO L87 Difference]: Start difference. First operand 8767 states and 12885 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 01:58:38,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:41,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:44,014 WARN L539 Checker$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 01:58:46,106 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 01:58:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:48,392 INFO L93 Difference]: Finished difference Result 16988 states and 25914 transitions. [2022-11-03 01:58:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:58:48,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 490 [2022-11-03 01:58:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:48,566 INFO L225 Difference]: With dead ends: 16988 [2022-11-03 01:58:48,567 INFO L226 Difference]: Without dead ends: 16984 [2022-11-03 01:58:48,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 01:58:48,586 INFO L413 NwaCegarLoop]: 3999 mSDtfsCounter, 3426 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 6950 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:48,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3426 Valid, 6950 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 613 Invalid, 4 Unknown, 0 Unchecked, 11.7s Time] [2022-11-03 01:58:48,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16984 states. [2022-11-03 01:58:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16984 to 16982. [2022-11-03 01:58:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16982 states, 10741 states have (on average 1.351457033795736) internal successors, (14516), 10872 states have internal predecessors, (14516), 5215 states have call successors, (5215), 1034 states have call predecessors, (5215), 1025 states have return successors, (6174), 5155 states have call predecessors, (6174), 5209 states have call successors, (6174) [2022-11-03 01:58:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16982 states to 16982 states and 25905 transitions. [2022-11-03 01:58:49,822 INFO L78 Accepts]: Start accepts. Automaton has 16982 states and 25905 transitions. Word has length 490 [2022-11-03 01:58:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:49,825 INFO L495 AbstractCegarLoop]: Abstraction has 16982 states and 25905 transitions. [2022-11-03 01:58:49,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 01:58:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 16982 states and 25905 transitions. [2022-11-03 01:58:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2022-11-03 01:58:49,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:49,841 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:49,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:58:49,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:58:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash -517278418, now seen corresponding path program 1 times [2022-11-03 01:58:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:49,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338403111] [2022-11-03 01:58:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:49,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2022-11-03 01:58:51,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:51,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338403111] [2022-11-03 01:58:51,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338403111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:51,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:51,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:58:51,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937641733] [2022-11-03 01:58:51,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:51,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:58:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:58:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:58:51,167 INFO L87 Difference]: Start difference. First operand 16982 states and 25905 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:58:52,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:56,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:58:58,250 WARN L539 Checker$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 01:59:00,447 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 01:59:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:01,381 INFO L93 Difference]: Finished difference Result 17510 states and 26615 transitions. [2022-11-03 01:59:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:01,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 489 [2022-11-03 01:59:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:01,492 INFO L225 Difference]: With dead ends: 17510 [2022-11-03 01:59:01,492 INFO L226 Difference]: Without dead ends: 17507 [2022-11-03 01:59:01,506 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 01:59:01,507 INFO L413 NwaCegarLoop]: 3225 mSDtfsCounter, 3333 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3343 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:01,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3343 Valid, 3364 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 335 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2022-11-03 01:59:01,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17507 states. [2022-11-03 01:59:02,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17507 to 17494. [2022-11-03 01:59:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17494 states, 11042 states have (on average 1.3484875928273863) internal successors, (14890), 11181 states have internal predecessors, (14890), 5327 states have call successors, (5327), 1121 states have call predecessors, (5327), 1124 states have return successors, (6344), 5271 states have call predecessors, (6344), 5322 states have call successors, (6344) [2022-11-03 01:59:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17494 states to 17494 states and 26561 transitions. [2022-11-03 01:59:02,835 INFO L78 Accepts]: Start accepts. Automaton has 17494 states and 26561 transitions. Word has length 489 [2022-11-03 01:59:02,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:02,836 INFO L495 AbstractCegarLoop]: Abstraction has 17494 states and 26561 transitions. [2022-11-03 01:59:02,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:59:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 17494 states and 26561 transitions. [2022-11-03 01:59:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-03 01:59:02,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:02,854 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:02,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:59:02,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1143005219, now seen corresponding path program 1 times [2022-11-03 01:59:02,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866038350] [2022-11-03 01:59:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:02,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2022-11-03 01:59:04,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:04,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866038350] [2022-11-03 01:59:04,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866038350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:04,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:04,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:04,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474212818] [2022-11-03 01:59:04,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:04,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:04,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:04,054 INFO L87 Difference]: Start difference. First operand 17494 states and 26561 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:59:06,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:09,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:12,002 WARN L539 Checker$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 01:59:14,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:15,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:15,183 INFO L93 Difference]: Finished difference Result 17509 states and 26613 transitions. [2022-11-03 01:59:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:15,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 490 [2022-11-03 01:59:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:15,295 INFO L225 Difference]: With dead ends: 17509 [2022-11-03 01:59:15,295 INFO L226 Difference]: Without dead ends: 17506 [2022-11-03 01:59:15,309 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 01:59:15,310 INFO L413 NwaCegarLoop]: 3223 mSDtfsCounter, 3330 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:15,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3340 Valid, 3362 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 4 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 01:59:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17506 states. [2022-11-03 01:59:16,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17506 to 17493. [2022-11-03 01:59:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17493 states, 11042 states have (on average 1.348397029523637) internal successors, (14889), 11180 states have internal predecessors, (14889), 5326 states have call successors, (5326), 1121 states have call predecessors, (5326), 1124 states have return successors, (6344), 5271 states have call predecessors, (6344), 5322 states have call successors, (6344) [2022-11-03 01:59:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17493 states to 17493 states and 26559 transitions. [2022-11-03 01:59:16,580 INFO L78 Accepts]: Start accepts. Automaton has 17493 states and 26559 transitions. Word has length 490 [2022-11-03 01:59:16,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:16,581 INFO L495 AbstractCegarLoop]: Abstraction has 17493 states and 26559 transitions. [2022-11-03 01:59:16,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:59:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 17493 states and 26559 transitions. [2022-11-03 01:59:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-03 01:59:16,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:16,601 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:16,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:59:16,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:16,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1072195281, now seen corresponding path program 1 times [2022-11-03 01:59:16,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:16,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819881189] [2022-11-03 01:59:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2022-11-03 01:59:18,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:18,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819881189] [2022-11-03 01:59:18,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819881189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:18,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:18,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357211908] [2022-11-03 01:59:18,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:18,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:18,208 INFO L87 Difference]: Start difference. First operand 17493 states and 26559 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:59:20,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:23,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:25,824 WARN L539 Checker$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 01:59:28,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:29,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:29,225 INFO L93 Difference]: Finished difference Result 17508 states and 26611 transitions. [2022-11-03 01:59:29,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:29,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 491 [2022-11-03 01:59:29,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:29,325 INFO L225 Difference]: With dead ends: 17508 [2022-11-03 01:59:29,325 INFO L226 Difference]: Without dead ends: 17500 [2022-11-03 01:59:29,336 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 01:59:29,337 INFO L413 NwaCegarLoop]: 3222 mSDtfsCounter, 3327 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:29,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3337 Valid, 3361 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 4 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 01:59:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17500 states. [2022-11-03 01:59:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17500 to 17487. [2022-11-03 01:59:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17487 states, 11037 states have (on average 1.348101839267917) internal successors, (14879), 11174 states have internal predecessors, (14879), 5325 states have call successors, (5325), 1121 states have call predecessors, (5325), 1124 states have return successors, (6344), 5271 states have call predecessors, (6344), 5322 states have call successors, (6344) [2022-11-03 01:59:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17487 states to 17487 states and 26548 transitions. [2022-11-03 01:59:30,553 INFO L78 Accepts]: Start accepts. Automaton has 17487 states and 26548 transitions. Word has length 491 [2022-11-03 01:59:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:30,554 INFO L495 AbstractCegarLoop]: Abstraction has 17487 states and 26548 transitions. [2022-11-03 01:59:30,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:59:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 17487 states and 26548 transitions. [2022-11-03 01:59:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-11-03 01:59:30,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:30,715 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 20, 20, 20, 20, 20, 20, 20, 20, 20, 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] [2022-11-03 01:59:30,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:59:30,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1346136969, now seen corresponding path program 1 times [2022-11-03 01:59:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:30,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360631345] [2022-11-03 01:59:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:30,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2022-11-03 01:59:31,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:31,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360631345] [2022-11-03 01:59:31,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360631345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:31,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:31,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:31,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313819790] [2022-11-03 01:59:31,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:31,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:31,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:31,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:31,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:31,763 INFO L87 Difference]: Start difference. First operand 17487 states and 26548 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 01:59:33,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:37,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:41,855 WARN L539 Checker$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 01:59:44,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:45,098 INFO L93 Difference]: Finished difference Result 50564 states and 76595 transitions. [2022-11-03 01:59:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:45,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 510 [2022-11-03 01:59:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:45,314 INFO L225 Difference]: With dead ends: 50564 [2022-11-03 01:59:45,314 INFO L226 Difference]: Without dead ends: 33170 [2022-11-03 01:59:45,444 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 01:59:45,445 INFO L413 NwaCegarLoop]: 3966 mSDtfsCounter, 3036 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 7007 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:45,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 7007 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 710 Invalid, 4 Unknown, 0 Unchecked, 12.0s Time] [2022-11-03 01:59:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33170 states. [2022-11-03 01:59:47,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33170 to 33159. [2022-11-03 01:59:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33159 states, 20917 states have (on average 1.344695702060525) internal successors, (28127), 21166 states have internal predecessors, (28127), 10117 states have call successors, (10117), 2129 states have call predecessors, (10117), 2124 states have return successors, (11922), 10023 states have call predecessors, (11922), 10114 states have call successors, (11922) [2022-11-03 01:59:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33159 states to 33159 states and 50166 transitions. [2022-11-03 01:59:48,050 INFO L78 Accepts]: Start accepts. Automaton has 33159 states and 50166 transitions. Word has length 510 [2022-11-03 01:59:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:48,051 INFO L495 AbstractCegarLoop]: Abstraction has 33159 states and 50166 transitions. [2022-11-03 01:59:48,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 01:59:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 33159 states and 50166 transitions. [2022-11-03 01:59:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-11-03 01:59:48,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:48,064 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 20, 20, 20, 20, 20, 20, 20, 20, 20, 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] [2022-11-03 01:59:48,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:59:48,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:48,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1242697385, now seen corresponding path program 1 times [2022-11-03 01:59:48,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:48,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348571889] [2022-11-03 01:59:48,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:48,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2022-11-03 01:59:50,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:50,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348571889] [2022-11-03 01:59:50,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348571889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:50,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:50,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:59:50,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431813987] [2022-11-03 01:59:50,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:50,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:50,377 INFO L87 Difference]: Start difference. First operand 33159 states and 50166 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 01:59:52,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:56,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:59,785 WARN L539 Checker$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 02:00:01,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:02,533 INFO L93 Difference]: Finished difference Result 33241 states and 50243 transitions. [2022-11-03 02:00:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:02,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 513 [2022-11-03 02:00:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:02,757 INFO L225 Difference]: With dead ends: 33241 [2022-11-03 02:00:02,758 INFO L226 Difference]: Without dead ends: 33238 [2022-11-03 02:00:02,780 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 02:00:02,781 INFO L413 NwaCegarLoop]: 3132 mSDtfsCounter, 105 mSDsluCounter, 3319 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 6153 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:02,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 6153 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 611 Invalid, 4 Unknown, 0 Unchecked, 11.1s Time] [2022-11-03 02:00:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33238 states. [2022-11-03 02:00:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33238 to 33238. [2022-11-03 02:00:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33238 states, 20969 states have (on average 1.3444131813629643) internal successors, (28191), 21217 states have internal predecessors, (28191), 10116 states have call successors, (10116), 2157 states have call predecessors, (10116), 2152 states have return successors, (11922), 10023 states have call predecessors, (11922), 10114 states have call successors, (11922) [2022-11-03 02:00:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33238 states to 33238 states and 50229 transitions. [2022-11-03 02:00:05,367 INFO L78 Accepts]: Start accepts. Automaton has 33238 states and 50229 transitions. Word has length 513 [2022-11-03 02:00:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:05,368 INFO L495 AbstractCegarLoop]: Abstraction has 33238 states and 50229 transitions. [2022-11-03 02:00:05,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (58), 3 states have call predecessors, (58), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 02:00:05,369 INFO L276 IsEmpty]: Start isEmpty. Operand 33238 states and 50229 transitions. [2022-11-03 02:00:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-11-03 02:00:05,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:05,387 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 20, 20, 20, 20, 20, 20, 20, 20, 20, 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] [2022-11-03 02:00:05,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:00:05,388 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2093533418, now seen corresponding path program 1 times [2022-11-03 02:00:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:05,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81552461] [2022-11-03 02:00:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3843 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3843 trivial. 0 not checked. [2022-11-03 02:00:07,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:07,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81552461] [2022-11-03 02:00:07,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81552461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:07,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:07,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:07,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974919434] [2022-11-03 02:00:07,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:07,146 INFO L87 Difference]: Start difference. First operand 33238 states and 50229 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 02:00:09,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:14,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:17,167 WARN L539 Checker$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 02:00:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:19,331 INFO L93 Difference]: Finished difference Result 87200 states and 130970 transitions. [2022-11-03 02:00:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 560 [2022-11-03 02:00:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:19,722 INFO L225 Difference]: With dead ends: 87200 [2022-11-03 02:00:19,722 INFO L226 Difference]: Without dead ends: 54055 [2022-11-03 02:00:20,127 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 02:00:20,141 INFO L413 NwaCegarLoop]: 3893 mSDtfsCounter, 2109 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 6861 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:20,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 6861 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 796 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:00:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54055 states. [2022-11-03 02:00:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54055 to 54038. [2022-11-03 02:00:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54038 states, 34169 states have (on average 1.3457519974245662) internal successors, (45983), 34633 states have internal predecessors, (45983), 16068 states have call successors, (16068), 3813 states have call predecessors, (16068), 3800 states have return successors, (18782), 15879 states have call predecessors, (18782), 16066 states have call successors, (18782) [2022-11-03 02:00:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54038 states to 54038 states and 80833 transitions. [2022-11-03 02:00:23,623 INFO L78 Accepts]: Start accepts. Automaton has 54038 states and 80833 transitions. Word has length 560 [2022-11-03 02:00:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:23,624 INFO L495 AbstractCegarLoop]: Abstraction has 54038 states and 80833 transitions. [2022-11-03 02:00:23,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 02:00:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 54038 states and 80833 transitions. [2022-11-03 02:00:23,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2022-11-03 02:00:23,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:23,752 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 36, 24, 24, 24, 24, 24, 24, 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] [2022-11-03 02:00:23,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:00:23,752 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:23,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash 550874249, now seen corresponding path program 1 times [2022-11-03 02:00:23,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:23,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353596598] [2022-11-03 02:00:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:23,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8245 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8241 trivial. 0 not checked. [2022-11-03 02:00:25,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:25,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353596598] [2022-11-03 02:00:25,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353596598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:25,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:25,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:25,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370698560] [2022-11-03 02:00:25,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:25,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:25,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:25,626 INFO L87 Difference]: Start difference. First operand 54038 states and 80833 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2022-11-03 02:00:27,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:34,995 WARN L539 Checker$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 02:00:37,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:40,403 WARN L539 Checker$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 02:00:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:42,919 INFO L93 Difference]: Finished difference Result 134782 states and 202367 transitions. [2022-11-03 02:00:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:42,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 741 [2022-11-03 02:00:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:43,749 INFO L225 Difference]: With dead ends: 134782 [2022-11-03 02:00:43,750 INFO L226 Difference]: Without dead ends: 80837 [2022-11-03 02:00:44,032 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 02:00:44,033 INFO L413 NwaCegarLoop]: 5024 mSDtfsCounter, 3167 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 45 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3177 SdHoareTripleChecker+Valid, 8031 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:44,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3177 Valid, 8031 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 914 Invalid, 4 Unknown, 0 Unchecked, 13.1s Time] [2022-11-03 02:00:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80837 states. [2022-11-03 02:00:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80837 to 80827. [2022-11-03 02:00:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80827 states, 51319 states have (on average 1.342797014750872) internal successors, (68911), 51993 states have internal predecessors, (68911), 23874 states have call successors, (23874), 5659 states have call predecessors, (23874), 5633 states have return successors, (28413), 23606 states have call predecessors, (28413), 23872 states have call successors, (28413) [2022-11-03 02:00:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80827 states to 80827 states and 121198 transitions. [2022-11-03 02:00:49,108 INFO L78 Accepts]: Start accepts. Automaton has 80827 states and 121198 transitions. Word has length 741 [2022-11-03 02:00:49,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:49,109 INFO L495 AbstractCegarLoop]: Abstraction has 80827 states and 121198 transitions. [2022-11-03 02:00:49,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2022-11-03 02:00:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 80827 states and 121198 transitions. [2022-11-03 02:00:49,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-11-03 02:00:49,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:49,188 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 36, 36, 36, 24, 24, 24, 24, 24, 24, 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] [2022-11-03 02:00:49,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:00:49,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1667136517, now seen corresponding path program 1 times [2022-11-03 02:00:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:49,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119097186] [2022-11-03 02:00:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:49,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8245 trivial. 0 not checked. [2022-11-03 02:00:51,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:51,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119097186] [2022-11-03 02:00:51,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119097186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:51,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:51,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415507396] [2022-11-03 02:00:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:51,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:51,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:51,820 INFO L87 Difference]: Start difference. First operand 80827 states and 121198 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2022-11-03 02:00:53,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:59,568 WARN L539 Checker$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 02:01:02,181 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 02:01:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:05,329 INFO L93 Difference]: Finished difference Result 161536 states and 243954 transitions. [2022-11-03 02:01:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:05,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 739 [2022-11-03 02:01:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:05,913 INFO L225 Difference]: With dead ends: 161536 [2022-11-03 02:01:05,913 INFO L226 Difference]: Without dead ends: 80802 [2022-11-03 02:01:06,738 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 02:01:06,738 INFO L413 NwaCegarLoop]: 3119 mSDtfsCounter, 19 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6227 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:06,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 6227 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 613 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:01:06,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80802 states. [2022-11-03 02:01:11,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80802 to 80802. [2022-11-03 02:01:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80802 states, 51312 states have (on average 1.3403687246647957) internal successors, (68777), 51987 states have internal predecessors, (68777), 23847 states have call successors, (23847), 5659 states have call predecessors, (23847), 5642 states have return successors, (28709), 23587 states have call predecessors, (28709), 23845 states have call successors, (28709)