./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--thunderbolt--thunderbolt.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/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 d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:12:17,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:12:17,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:12:17,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:12:17,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:12:17,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:12:17,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:12:17,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:12:17,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:12:17,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:12:17,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:12:17,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:12:17,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:12:17,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:12:17,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:12:17,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:12:17,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:12:17,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:12:17,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:12:17,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:12:17,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:12:17,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:12:17,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:12:17,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:12:17,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:12:17,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:12:17,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:12:17,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:12:17,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:12:17,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:12:17,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:12:17,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:12:17,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:12:17,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:12:17,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:12:17,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:12:17,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:12:17,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:12:17,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:12:17,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:12:17,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:12:17,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:12:17,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:12:17,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:12:17,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:12:17,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:12:17,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:12:17,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:12:17,472 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:12:17,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:12:17,473 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:12:17,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:12:17,474 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:12:17,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:12:17,475 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:12:17,475 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:12:17,475 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:12:17,475 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:12:17,476 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:12:17,476 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:12:17,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:12:17,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:12:17,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:12:17,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:12:17,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:12:17,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:12:17,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:12:17,478 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:12:17,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:12:17,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:12:17,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:12:17,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:12:17,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:12:17,480 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:12:17,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:12:17,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:12:17,481 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:12:17,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:12:17,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:12:17,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:12:17,482 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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 [2022-11-03 02:12:17,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:12:17,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:12:17,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:12:17,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:12:17,837 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:12:17,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-03 02:12:17,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data/6b9d21639/67749cd8d04f4f73bb91c61bfd7d8f24/FLAGa3325c952 [2022-11-03 02:12:19,008 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:12:19,008 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-03 02:12:19,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data/6b9d21639/67749cd8d04f4f73bb91c61bfd7d8f24/FLAGa3325c952 [2022-11-03 02:12:19,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data/6b9d21639/67749cd8d04f4f73bb91c61bfd7d8f24 [2022-11-03 02:12:19,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:12:19,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:12:19,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:12:19,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:12:19,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:12:19,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:12:19" (1/1) ... [2022-11-03 02:12:19,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2936aa31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:19, skipping insertion in model container [2022-11-03 02:12:19,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:12:19" (1/1) ... [2022-11-03 02:12:19,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:12:19,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:12:22,492 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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-03 02:12:22,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:12:22,744 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:12:23,380 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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-03 02:12:23,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:12:23,578 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:12:23,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23 WrapperNode [2022-11-03 02:12:23,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:12:23,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:12:23,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:12:23,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:12:23,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:23,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:23,950 INFO L138 Inliner]: procedures = 480, calls = 3867, calls flagged for inlining = 166, calls inlined = 158, statements flattened = 7270 [2022-11-03 02:12:23,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:12:23,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:12:23,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:12:23,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:12:23,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:23,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:24,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:24,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:24,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:24,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:24,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:24,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:24,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:12:24,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:12:24,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:12:24,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:12:24,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (1/1) ... [2022-11-03 02:12:24,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:12:24,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:12:24,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:12:24,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:12:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-03 02:12:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-03 02:12:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2022-11-03 02:12:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2022-11-03 02:12:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2022-11-03 02:12:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2022-11-03 02:12:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:12:24,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:12:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:12:24,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:12:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2022-11-03 02:12:24,543 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2022-11-03 02:12:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2022-11-03 02:12:24,544 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2022-11-03 02:12:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 02:12:24,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 02:12:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2022-11-03 02:12:24,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2022-11-03 02:12:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2022-11-03 02:12:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2022-11-03 02:12:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2022-11-03 02:12:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2022-11-03 02:12:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2022-11-03 02:12:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2022-11-03 02:12:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2022-11-03 02:12:24,546 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2022-11-03 02:12:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2022-11-03 02:12:24,546 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2022-11-03 02:12:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 02:12:24,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 02:12:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2022-11-03 02:12:24,547 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2022-11-03 02:12:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:12:24,547 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:12:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:12:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:12:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-03 02:12:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-03 02:12:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2022-11-03 02:12:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2022-11-03 02:12:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:12:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2022-11-03 02:12:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2022-11-03 02:12:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2022-11-03 02:12:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2022-11-03 02:12:24,550 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:12:24,550 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:12:24,550 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2022-11-03 02:12:24,551 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2022-11-03 02:12:24,552 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2022-11-03 02:12:24,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2022-11-03 02:12:24,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:12:24,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:12:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2022-11-03 02:12:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2022-11-03 02:12:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-03 02:12:24,553 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-03 02:12:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2022-11-03 02:12:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2022-11-03 02:12:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb [2022-11-03 02:12:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb [2022-11-03 02:12:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:12:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2022-11-03 02:12:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2022-11-03 02:12:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:12:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:12:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2022-11-03 02:12:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2022-11-03 02:12:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-03 02:12:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-03 02:12:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-11-03 02:12:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-11-03 02:12:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2022-11-03 02:12:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2022-11-03 02:12:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2022-11-03 02:12:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2022-11-03 02:12:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2022-11-03 02:12:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2022-11-03 02:12:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2022-11-03 02:12:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2022-11-03 02:12:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 02:12:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 02:12:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2022-11-03 02:12:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2022-11-03 02:12:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:12:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:12:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2022-11-03 02:12:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2022-11-03 02:12:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:12:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2022-11-03 02:12:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2022-11-03 02:12:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:12:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:12:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:12:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:12:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2022-11-03 02:12:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2022-11-03 02:12:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2022-11-03 02:12:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2022-11-03 02:12:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2022-11-03 02:12:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2022-11-03 02:12:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:12:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:12:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:12:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:12:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 02:12:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 02:12:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb [2022-11-03 02:12:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb [2022-11-03 02:12:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2022-11-03 02:12:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2022-11-03 02:12:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:12:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:12:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:12:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:12:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2022-11-03 02:12:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2022-11-03 02:12:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2022-11-03 02:12:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2022-11-03 02:12:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:12:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:12:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2022-11-03 02:12:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2022-11-03 02:12:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2022-11-03 02:12:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2022-11-03 02:12:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:12:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:12:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:12:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:12:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2022-11-03 02:12:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2022-11-03 02:12:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2022-11-03 02:12:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2022-11-03 02:12:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2022-11-03 02:12:24,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2022-11-03 02:12:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2022-11-03 02:12:24,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2022-11-03 02:12:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2022-11-03 02:12:24,584 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2022-11-03 02:12:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2022-11-03 02:12:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2022-11-03 02:12:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2022-11-03 02:12:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2022-11-03 02:12:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 02:12:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 02:12:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2022-11-03 02:12:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2022-11-03 02:12:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:12:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:12:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:12:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:12:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2022-11-03 02:12:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2022-11-03 02:12:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2022-11-03 02:12:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2022-11-03 02:12:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-03 02:12:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-03 02:12:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:12:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:12:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2022-11-03 02:12:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2022-11-03 02:12:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2022-11-03 02:12:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2022-11-03 02:12:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2022-11-03 02:12:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2022-11-03 02:12:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:12:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:12:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2022-11-03 02:12:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2022-11-03 02:12:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2022-11-03 02:12:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2022-11-03 02:12:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2022-11-03 02:12:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2022-11-03 02:12:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:12:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:12:24,589 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2022-11-03 02:12:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2022-11-03 02:12:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:12:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:12:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:12:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2022-11-03 02:12:24,590 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2022-11-03 02:12:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2022-11-03 02:12:24,591 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2022-11-03 02:12:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2022-11-03 02:12:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2022-11-03 02:12:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:12:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-03 02:12:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-03 02:12:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-03 02:12:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-03 02:12:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:12:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2022-11-03 02:12:24,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2022-11-03 02:12:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2022-11-03 02:12:24,594 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2022-11-03 02:12:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2022-11-03 02:12:24,594 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2022-11-03 02:12:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:12:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:12:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:12:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:12:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 02:12:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 02:12:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2022-11-03 02:12:24,595 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2022-11-03 02:12:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:12:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:12:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2022-11-03 02:12:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2022-11-03 02:12:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 02:12:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 02:12:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2022-11-03 02:12:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2022-11-03 02:12:24,597 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2022-11-03 02:12:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2022-11-03 02:12:24,597 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2022-11-03 02:12:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2022-11-03 02:12:24,597 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2022-11-03 02:12:24,597 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2022-11-03 02:12:24,597 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:12:24,598 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:12:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2022-11-03 02:12:24,598 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2022-11-03 02:12:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2022-11-03 02:12:24,598 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2022-11-03 02:12:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2022-11-03 02:12:24,598 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2022-11-03 02:12:24,598 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2022-11-03 02:12:24,599 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2022-11-03 02:12:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:12:24,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:12:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2022-11-03 02:12:24,599 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2022-11-03 02:12:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:12:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:12:24,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:12:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2022-11-03 02:12:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2022-11-03 02:12:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2022-11-03 02:12:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2022-11-03 02:12:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2022-11-03 02:12:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2022-11-03 02:12:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2022-11-03 02:12:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2022-11-03 02:12:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2022-11-03 02:12:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2022-11-03 02:12:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2022-11-03 02:12:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2022-11-03 02:12:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2022-11-03 02:12:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2022-11-03 02:12:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2022-11-03 02:12:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2022-11-03 02:12:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2022-11-03 02:12:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2022-11-03 02:12:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2022-11-03 02:12:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2022-11-03 02:12:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2022-11-03 02:12:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2022-11-03 02:12:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2022-11-03 02:12:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2022-11-03 02:12:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:12:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:12:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2022-11-03 02:12:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2022-11-03 02:12:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-03 02:12:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-03 02:12:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2022-11-03 02:12:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2022-11-03 02:12:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2022-11-03 02:12:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2022-11-03 02:12:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2022-11-03 02:12:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2022-11-03 02:12:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2022-11-03 02:12:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2022-11-03 02:12:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-03 02:12:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-03 02:12:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:12:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2022-11-03 02:12:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2022-11-03 02:12:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-03 02:12:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-03 02:12:25,898 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:12:25,905 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:12:26,524 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:12:47,277 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:12:49,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:12:49,147 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:12:49,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:12:49 BoogieIcfgContainer [2022-11-03 02:12:49,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:12:49,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:12:49,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:12:49,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:12:49,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:12:19" (1/3) ... [2022-11-03 02:12:49,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a294de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:12:49, skipping insertion in model container [2022-11-03 02:12:49,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:23" (2/3) ... [2022-11-03 02:12:49,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a294de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:12:49, skipping insertion in model container [2022-11-03 02:12:49,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:12:49" (3/3) ... [2022-11-03 02:12:49,163 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-03 02:12:49,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:12:49,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:12:49,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:12:49,314 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;@1c84f9f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:12:49,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:12:49,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 2147 states, 1312 states have (on average 1.3201219512195121) internal successors, (1732), 1359 states have internal predecessors, (1732), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) [2022-11-03 02:12:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:12:49,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:49,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 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 02:12:49,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash -313975836, now seen corresponding path program 1 times [2022-11-03 02:12:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:49,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077347713] [2022-11-03 02:12:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:49,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:12:50,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:50,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077347713] [2022-11-03 02:12:50,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077347713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:50,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:50,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:12:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759838473] [2022-11-03 02:12:50,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:50,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:12:50,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:50,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:12:50,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:50,324 INFO L87 Difference]: Start difference. First operand has 2147 states, 1312 states have (on average 1.3201219512195121) internal successors, (1732), 1359 states have internal predecessors, (1732), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:12:52,964 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 02:12:55,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:59,983 WARN L539 Checker$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 02:13:01,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:02,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:02,689 INFO L93 Difference]: Finished difference Result 5606 states and 8537 transitions. [2022-11-03 02:13:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:02,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-11-03 02:13:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:02,745 INFO L225 Difference]: With dead ends: 5606 [2022-11-03 02:13:02,746 INFO L226 Difference]: Without dead ends: 3446 [2022-11-03 02:13:02,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 02:13:02,869 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 2916 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2918 SdHoareTripleChecker+Valid, 5313 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:02,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2918 Valid, 5313 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 447 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2022-11-03 02:13:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2022-11-03 02:13:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 3437. [2022-11-03 02:13:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 2107 states have (on average 1.31656383483626) internal successors, (2774), 2177 states have internal predecessors, (2774), 1107 states have call successors, (1107), 231 states have call predecessors, (1107), 222 states have return successors, (1174), 1069 states have call predecessors, (1174), 1096 states have call successors, (1174) [2022-11-03 02:13:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5055 transitions. [2022-11-03 02:13:03,244 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5055 transitions. Word has length 26 [2022-11-03 02:13:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:03,245 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 5055 transitions. [2022-11-03 02:13:03,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:13:03,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5055 transitions. [2022-11-03 02:13:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 02:13:03,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:03,251 INFO L195 NwaCegarLoop]: trace histogram [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 02:13:03,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:13:03,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash -516013163, now seen corresponding path program 1 times [2022-11-03 02:13:03,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:03,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653420573] [2022-11-03 02:13:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:03,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653420573] [2022-11-03 02:13:03,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653420573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:03,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:03,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127821071] [2022-11-03 02:13:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:03,528 INFO L87 Difference]: Start difference. First operand 3437 states and 5055 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:13:05,984 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 02:13:08,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:14,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:15,189 INFO L93 Difference]: Finished difference Result 10250 states and 15081 transitions. [2022-11-03 02:13:15,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:15,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-03 02:13:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:15,244 INFO L225 Difference]: With dead ends: 10250 [2022-11-03 02:13:15,244 INFO L226 Difference]: Without dead ends: 6816 [2022-11-03 02:13:15,267 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 02:13:15,268 INFO L413 NwaCegarLoop]: 3527 mSDtfsCounter, 3036 mSDsluCounter, 3082 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3040 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:15,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3040 Valid, 6367 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 502 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 02:13:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6816 states. [2022-11-03 02:13:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6816 to 6808. [2022-11-03 02:13:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6808 states, 4178 states have (on average 1.3147438966012446) internal successors, (5493), 4307 states have internal predecessors, (5493), 2185 states have call successors, (2185), 461 states have call predecessors, (2185), 444 states have return successors, (2339), 2121 states have call predecessors, (2339), 2174 states have call successors, (2339) [2022-11-03 02:13:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6808 states to 6808 states and 10017 transitions. [2022-11-03 02:13:15,946 INFO L78 Accepts]: Start accepts. Automaton has 6808 states and 10017 transitions. Word has length 24 [2022-11-03 02:13:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:15,949 INFO L495 AbstractCegarLoop]: Abstraction has 6808 states and 10017 transitions. [2022-11-03 02:13:15,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:13:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6808 states and 10017 transitions. [2022-11-03 02:13:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:13:15,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:15,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 02:13:15,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:13:15,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:15,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash 492728314, now seen corresponding path program 1 times [2022-11-03 02:13:15,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:15,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460163836] [2022-11-03 02:13:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:15,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:16,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:16,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460163836] [2022-11-03 02:13:16,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460163836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:16,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:16,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:16,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831345632] [2022-11-03 02:13:16,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:16,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:16,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:16,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:16,193 INFO L87 Difference]: Start difference. First operand 6808 states and 10017 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:13:19,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:22,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:25,370 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 02:13:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:25,984 INFO L93 Difference]: Finished difference Result 18181 states and 26618 transitions. [2022-11-03 02:13:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:25,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-11-03 02:13:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:26,071 INFO L225 Difference]: With dead ends: 18181 [2022-11-03 02:13:26,071 INFO L226 Difference]: Without dead ends: 11376 [2022-11-03 02:13:26,114 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 02:13:26,115 INFO L413 NwaCegarLoop]: 3750 mSDtfsCounter, 2138 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 6593 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:26,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2140 Valid, 6593 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 546 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 02:13:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2022-11-03 02:13:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 11352. [2022-11-03 02:13:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11352 states, 6970 states have (on average 1.3103299856527977) internal successors, (9133), 7169 states have internal predecessors, (9133), 3589 states have call successors, (3589), 827 states have call predecessors, (3589), 792 states have return successors, (3849), 3483 states have call predecessors, (3849), 3578 states have call successors, (3849) [2022-11-03 02:13:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11352 states to 11352 states and 16571 transitions. [2022-11-03 02:13:27,043 INFO L78 Accepts]: Start accepts. Automaton has 11352 states and 16571 transitions. Word has length 30 [2022-11-03 02:13:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:27,043 INFO L495 AbstractCegarLoop]: Abstraction has 11352 states and 16571 transitions. [2022-11-03 02:13:27,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:13:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 11352 states and 16571 transitions. [2022-11-03 02:13:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:13:27,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:27,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 02:13:27,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:13:27,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:27,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash 186063483, now seen corresponding path program 1 times [2022-11-03 02:13:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:27,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006867888] [2022-11-03 02:13:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:27,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:27,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006867888] [2022-11-03 02:13:27,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006867888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:27,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:27,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52665244] [2022-11-03 02:13:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:27,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:27,482 INFO L87 Difference]: Start difference. First operand 11352 states and 16571 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:13:30,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:34,212 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 02:13:35,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:35,971 INFO L93 Difference]: Finished difference Result 12388 states and 17855 transitions. [2022-11-03 02:13:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:35,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-11-03 02:13:35,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:36,158 INFO L225 Difference]: With dead ends: 12388 [2022-11-03 02:13:36,158 INFO L226 Difference]: Without dead ends: 12384 [2022-11-03 02:13:36,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 02:13:36,168 INFO L413 NwaCegarLoop]: 2985 mSDtfsCounter, 2760 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2764 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:36,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2764 Valid, 3793 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 346 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:13:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2022-11-03 02:13:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 12380. [2022-11-03 02:13:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 7564 states have (on average 1.300370174510841) internal successors, (9836), 7772 states have internal predecessors, (9836), 3863 states have call successors, (3863), 991 states have call predecessors, (3863), 952 states have return successors, (4140), 3755 states have call predecessors, (4140), 3854 states have call successors, (4140) [2022-11-03 02:13:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 17839 transitions. [2022-11-03 02:13:37,083 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 17839 transitions. Word has length 29 [2022-11-03 02:13:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:37,084 INFO L495 AbstractCegarLoop]: Abstraction has 12380 states and 17839 transitions. [2022-11-03 02:13:37,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:13:37,084 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 17839 transitions. [2022-11-03 02:13:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 02:13:37,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:37,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 02:13:37,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:13:37,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1556024915, now seen corresponding path program 1 times [2022-11-03 02:13:37,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:37,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343576375] [2022-11-03 02:13:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:37,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:37,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:37,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343576375] [2022-11-03 02:13:37,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343576375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:37,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:37,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:37,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695315997] [2022-11-03 02:13:37,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:37,295 INFO L87 Difference]: Start difference. First operand 12380 states and 17839 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:13:42,090 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 02:13:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:43,423 INFO L93 Difference]: Finished difference Result 12466 states and 17914 transitions. [2022-11-03 02:13:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:43,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-11-03 02:13:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:43,491 INFO L225 Difference]: With dead ends: 12466 [2022-11-03 02:13:43,491 INFO L226 Difference]: Without dead ends: 12463 [2022-11-03 02:13:43,499 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 02:13:43,500 INFO L413 NwaCegarLoop]: 2978 mSDtfsCounter, 3051 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3053 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:43,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3053 Valid, 3513 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 02:13:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12463 states. [2022-11-03 02:13:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12463 to 12459. [2022-11-03 02:13:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12459 states, 7609 states have (on average 1.298856617163885) internal successors, (9883), 7815 states have internal predecessors, (9883), 3873 states have call successors, (3873), 1016 states have call predecessors, (3873), 976 states have return successors, (4151), 3766 states have call predecessors, (4151), 3865 states have call successors, (4151) [2022-11-03 02:13:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12459 states to 12459 states and 17907 transitions. [2022-11-03 02:13:44,371 INFO L78 Accepts]: Start accepts. Automaton has 12459 states and 17907 transitions. Word has length 29 [2022-11-03 02:13:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:44,371 INFO L495 AbstractCegarLoop]: Abstraction has 12459 states and 17907 transitions. [2022-11-03 02:13:44,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:13:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 12459 states and 17907 transitions. [2022-11-03 02:13:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:13:44,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:44,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 02:13:44,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:13:44,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash 990949031, now seen corresponding path program 1 times [2022-11-03 02:13:44,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:44,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106801263] [2022-11-03 02:13:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:44,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:44,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:44,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106801263] [2022-11-03 02:13:44,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106801263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:44,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:44,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:44,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237560245] [2022-11-03 02:13:44,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:44,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:44,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:44,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:44,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:44,546 INFO L87 Difference]: Start difference. First operand 12459 states and 17907 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:13:47,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:49,228 WARN L539 Checker$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 02:13:51,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:57,140 WARN L539 Checker$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 02:13:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:57,647 INFO L93 Difference]: Finished difference Result 14048 states and 19869 transitions. [2022-11-03 02:13:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:57,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-03 02:13:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:57,712 INFO L225 Difference]: With dead ends: 14048 [2022-11-03 02:13:57,712 INFO L226 Difference]: Without dead ends: 14044 [2022-11-03 02:13:57,718 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 02:13:57,718 INFO L413 NwaCegarLoop]: 3028 mSDtfsCounter, 886 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 5485 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:57,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 5485 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 454 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2022-11-03 02:13:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14044 states. [2022-11-03 02:13:58,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14044 to 14029. [2022-11-03 02:13:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14029 states, 8513 states have (on average 1.2892047456830729) internal successors, (10975), 8753 states have internal predecessors, (10975), 4291 states have call successors, (4291), 1270 states have call predecessors, (4291), 1224 states have return successors, (4571), 4176 states have call predecessors, (4571), 4285 states have call successors, (4571) [2022-11-03 02:13:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14029 states to 14029 states and 19837 transitions. [2022-11-03 02:13:58,523 INFO L78 Accepts]: Start accepts. Automaton has 14029 states and 19837 transitions. Word has length 30 [2022-11-03 02:13:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:58,524 INFO L495 AbstractCegarLoop]: Abstraction has 14029 states and 19837 transitions. [2022-11-03 02:13:58,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:13:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14029 states and 19837 transitions. [2022-11-03 02:13:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 02:13:58,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:58,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:58,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:13:58,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:58,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash 882554201, now seen corresponding path program 1 times [2022-11-03 02:13:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:58,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821476105] [2022-11-03 02:13:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:58,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:13:58,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:58,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821476105] [2022-11-03 02:13:58,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821476105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:58,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:58,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:58,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730019282] [2022-11-03 02:13:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:58,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:58,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:58,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:58,711 INFO L87 Difference]: Start difference. First operand 14029 states and 19837 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:14:01,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:03,344 WARN L539 Checker$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 02:14:07,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:08,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:09,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:09,085 INFO L93 Difference]: Finished difference Result 14049 states and 19863 transitions. [2022-11-03 02:14:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-03 02:14:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:09,155 INFO L225 Difference]: With dead ends: 14049 [2022-11-03 02:14:09,155 INFO L226 Difference]: Without dead ends: 14040 [2022-11-03 02:14:09,165 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 02:14:09,165 INFO L413 NwaCegarLoop]: 2974 mSDtfsCounter, 3037 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:09,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3518 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 312 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 02:14:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14040 states. [2022-11-03 02:14:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14040 to 14036. [2022-11-03 02:14:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14036 states, 8517 states have (on average 1.2887166842785018) internal successors, (10976), 8758 states have internal predecessors, (10976), 4291 states have call successors, (4291), 1271 states have call predecessors, (4291), 1227 states have return successors, (4578), 4177 states have call predecessors, (4578), 4286 states have call successors, (4578) [2022-11-03 02:14:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14036 states to 14036 states and 19845 transitions. [2022-11-03 02:14:10,011 INFO L78 Accepts]: Start accepts. Automaton has 14036 states and 19845 transitions. Word has length 33 [2022-11-03 02:14:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:10,011 INFO L495 AbstractCegarLoop]: Abstraction has 14036 states and 19845 transitions. [2022-11-03 02:14:10,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:14:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 14036 states and 19845 transitions. [2022-11-03 02:14:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 02:14:10,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:10,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:10,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:14:10,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:10,014 INFO L85 PathProgramCache]: Analyzing trace with hash 836554313, now seen corresponding path program 1 times [2022-11-03 02:14:10,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:10,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21895374] [2022-11-03 02:14:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:10,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:10,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:10,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21895374] [2022-11-03 02:14:10,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21895374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:10,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:10,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:10,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986977898] [2022-11-03 02:14:10,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:10,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:10,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:10,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:10,316 INFO L87 Difference]: Start difference. First operand 14036 states and 19845 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:14:13,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:15,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:18,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:21,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:22,330 INFO L93 Difference]: Finished difference Result 14042 states and 19849 transitions. [2022-11-03 02:14:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:22,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-11-03 02:14:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:22,392 INFO L225 Difference]: With dead ends: 14042 [2022-11-03 02:14:22,392 INFO L226 Difference]: Without dead ends: 14039 [2022-11-03 02:14:22,400 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 02:14:22,400 INFO L413 NwaCegarLoop]: 2868 mSDtfsCounter, 340 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 5435 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:22,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 5435 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 496 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2022-11-03 02:14:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14039 states. [2022-11-03 02:14:23,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14039 to 14035. [2022-11-03 02:14:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14035 states, 8517 states have (on average 1.2870729129975342) internal successors, (10962), 8757 states have internal predecessors, (10962), 4290 states have call successors, (4290), 1271 states have call predecessors, (4290), 1227 states have return successors, (4578), 4177 states have call predecessors, (4578), 4286 states have call successors, (4578) [2022-11-03 02:14:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14035 states to 14035 states and 19830 transitions. [2022-11-03 02:14:23,338 INFO L78 Accepts]: Start accepts. Automaton has 14035 states and 19830 transitions. Word has length 42 [2022-11-03 02:14:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:23,339 INFO L495 AbstractCegarLoop]: Abstraction has 14035 states and 19830 transitions. [2022-11-03 02:14:23,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:14:23,339 INFO L276 IsEmpty]: Start isEmpty. Operand 14035 states and 19830 transitions. [2022-11-03 02:14:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 02:14:23,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:23,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:23,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:14:23,345 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1951618222, now seen corresponding path program 1 times [2022-11-03 02:14:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:23,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964779415] [2022-11-03 02:14:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:23,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:14:23,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:23,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964779415] [2022-11-03 02:14:23,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964779415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:23,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:23,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950514836] [2022-11-03 02:14:23,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:23,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:23,645 INFO L87 Difference]: Start difference. First operand 14035 states and 19830 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:14:26,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:31,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:33,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:34,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:34,093 INFO L93 Difference]: Finished difference Result 14215 states and 19968 transitions. [2022-11-03 02:14:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:34,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-11-03 02:14:34,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:34,175 INFO L225 Difference]: With dead ends: 14215 [2022-11-03 02:14:34,175 INFO L226 Difference]: Without dead ends: 14212 [2022-11-03 02:14:34,188 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 02:14:34,189 INFO L413 NwaCegarLoop]: 2840 mSDtfsCounter, 253 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 5448 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:34,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 5448 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 02:14:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14212 states. [2022-11-03 02:14:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14212 to 14212. [2022-11-03 02:14:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14212 states, 8614 states have (on average 1.2832598096122592) internal successors, (11054), 8853 states have internal predecessors, (11054), 4305 states have call successors, (4305), 1336 states have call predecessors, (4305), 1292 states have return successors, (4594), 4193 states have call predecessors, (4594), 4302 states have call successors, (4594) [2022-11-03 02:14:35,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14212 states to 14212 states and 19953 transitions. [2022-11-03 02:14:35,098 INFO L78 Accepts]: Start accepts. Automaton has 14212 states and 19953 transitions. Word has length 46 [2022-11-03 02:14:35,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:35,098 INFO L495 AbstractCegarLoop]: Abstraction has 14212 states and 19953 transitions. [2022-11-03 02:14:35,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:14:35,098 INFO L276 IsEmpty]: Start isEmpty. Operand 14212 states and 19953 transitions. [2022-11-03 02:14:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 02:14:35,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:35,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:35,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:14:35,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:35,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2041219337, now seen corresponding path program 1 times [2022-11-03 02:14:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:35,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896841269] [2022-11-03 02:14:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:35,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:14:35,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:35,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896841269] [2022-11-03 02:14:35,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896841269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:35,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:35,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601627848] [2022-11-03 02:14:35,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:35,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:35,287 INFO L87 Difference]: Start difference. First operand 14212 states and 19953 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:14:38,099 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 02:14:43,736 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 02:14:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:44,279 INFO L93 Difference]: Finished difference Result 24474 states and 34309 transitions. [2022-11-03 02:14:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-03 02:14:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:44,333 INFO L225 Difference]: With dead ends: 24474 [2022-11-03 02:14:44,334 INFO L226 Difference]: Without dead ends: 10263 [2022-11-03 02:14:44,401 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 02:14:44,402 INFO L413 NwaCegarLoop]: 2840 mSDtfsCounter, 8 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5669 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:44,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5669 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 02:14:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10263 states. [2022-11-03 02:14:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10263 to 10254. [2022-11-03 02:14:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10254 states, 6208 states have (on average 1.2799613402061856) internal successors, (7946), 6377 states have internal predecessors, (7946), 3101 states have call successors, (3101), 978 states have call predecessors, (3101), 944 states have return successors, (3299), 3020 states have call predecessors, (3299), 3098 states have call successors, (3299) [2022-11-03 02:14:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10254 states to 10254 states and 14346 transitions. [2022-11-03 02:14:44,967 INFO L78 Accepts]: Start accepts. Automaton has 10254 states and 14346 transitions. Word has length 68 [2022-11-03 02:14:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:44,968 INFO L495 AbstractCegarLoop]: Abstraction has 10254 states and 14346 transitions. [2022-11-03 02:14:44,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:14:44,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10254 states and 14346 transitions. [2022-11-03 02:14:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:14:44,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:44,974 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:14:44,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:14:44,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash 989123745, now seen corresponding path program 1 times [2022-11-03 02:14:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:44,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371962516] [2022-11-03 02:14:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:14:45,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:45,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371962516] [2022-11-03 02:14:45,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371962516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:45,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:45,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:14:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445653319] [2022-11-03 02:14:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:45,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:14:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:14:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:14:45,508 INFO L87 Difference]: Start difference. First operand 10254 states and 14346 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 02:14:48,742 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 02:14:50,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:56,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:59,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:15:00,003 INFO L93 Difference]: Finished difference Result 20908 states and 29256 transitions. [2022-11-03 02:15:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:15:00,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2022-11-03 02:15:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:15:00,076 INFO L225 Difference]: With dead ends: 20908 [2022-11-03 02:15:00,076 INFO L226 Difference]: Without dead ends: 13351 [2022-11-03 02:15:00,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:15:00,113 INFO L413 NwaCegarLoop]: 3759 mSDtfsCounter, 3336 mSDsluCounter, 6162 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 122 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 9473 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:15:00,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3355 Valid, 9473 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 827 Invalid, 3 Unknown, 0 Unchecked, 13.6s Time] [2022-11-03 02:15:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13351 states. [2022-11-03 02:15:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13351 to 13314. [2022-11-03 02:15:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13314 states, 8062 states have (on average 1.2805755395683454) internal successors, (10324), 8287 states have internal predecessors, (10324), 4020 states have call successors, (4020), 1276 states have call predecessors, (4020), 1231 states have return successors, (4284), 3913 states have call predecessors, (4284), 4017 states have call successors, (4284) [2022-11-03 02:15:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13314 states to 13314 states and 18628 transitions. [2022-11-03 02:15:00,984 INFO L78 Accepts]: Start accepts. Automaton has 13314 states and 18628 transitions. Word has length 80 [2022-11-03 02:15:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:15:00,984 INFO L495 AbstractCegarLoop]: Abstraction has 13314 states and 18628 transitions. [2022-11-03 02:15:00,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 02:15:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 13314 states and 18628 transitions. [2022-11-03 02:15:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:15:00,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:00,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-03 02:15:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:15:00,992 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:00,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash 637117756, now seen corresponding path program 1 times [2022-11-03 02:15:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:00,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002775188] [2022-11-03 02:15:00,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:00,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-03 02:15:01,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:01,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002775188] [2022-11-03 02:15:01,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002775188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:15:01,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:15:01,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:15:01,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565791640] [2022-11-03 02:15:01,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:15:01,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:15:01,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:01,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:15:01,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:15:01,311 INFO L87 Difference]: Start difference. First operand 13314 states and 18628 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:15:04,042 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 02:15:07,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:09,658 WARN L539 Checker$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 02:15:11,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:15:11,102 INFO L93 Difference]: Finished difference Result 13319 states and 18631 transitions. [2022-11-03 02:15:11,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:15:11,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-03 02:15:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:15:11,148 INFO L225 Difference]: With dead ends: 13319 [2022-11-03 02:15:11,149 INFO L226 Difference]: Without dead ends: 13316 [2022-11-03 02:15:11,156 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 02:15:11,156 INFO L413 NwaCegarLoop]: 3214 mSDtfsCounter, 2596 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:15:11,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2598 Valid, 4306 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 02:15:11,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13316 states. [2022-11-03 02:15:12,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13316 to 13313. [2022-11-03 02:15:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13313 states, 8062 states have (on average 1.2795832299677499) internal successors, (10316), 8286 states have internal predecessors, (10316), 4019 states have call successors, (4019), 1276 states have call predecessors, (4019), 1231 states have return successors, (4284), 3913 states have call predecessors, (4284), 4017 states have call successors, (4284) [2022-11-03 02:15:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 18619 transitions. [2022-11-03 02:15:12,090 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 18619 transitions. Word has length 87 [2022-11-03 02:15:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:15:12,090 INFO L495 AbstractCegarLoop]: Abstraction has 13313 states and 18619 transitions. [2022-11-03 02:15:12,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:15:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 18619 transitions. [2022-11-03 02:15:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-03 02:15:12,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:12,166 INFO L195 NwaCegarLoop]: trace histogram [22, 15, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:12,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:15:12,167 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash 643552114, now seen corresponding path program 1 times [2022-11-03 02:15:12,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:12,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960336396] [2022-11-03 02:15:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2022-11-03 02:15:15,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:15,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960336396] [2022-11-03 02:15:15,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960336396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:15:15,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:15:15,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:15:15,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818478299] [2022-11-03 02:15:15,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:15:15,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:15:15,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:15:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:15:15,162 INFO L87 Difference]: Start difference. First operand 13313 states and 18619 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 02:15:18,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:20,314 WARN L539 Checker$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 02:15:24,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:26,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:28,360 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 02:15:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:15:29,028 INFO L93 Difference]: Finished difference Result 30985 states and 43157 transitions. [2022-11-03 02:15:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:15:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 476 [2022-11-03 02:15:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:15:29,102 INFO L225 Difference]: With dead ends: 30985 [2022-11-03 02:15:29,102 INFO L226 Difference]: Without dead ends: 17675 [2022-11-03 02:15:29,145 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 02:15:29,146 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 2693 mSDsluCounter, 3045 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 7151 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:15:29,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 7151 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 601 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2022-11-03 02:15:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17675 states. [2022-11-03 02:15:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17675 to 17605. [2022-11-03 02:15:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17605 states, 10645 states have (on average 1.276561766087365) internal successors, (13589), 10949 states have internal predecessors, (13589), 5269 states have call successors, (5269), 1744 states have call predecessors, (5269), 1690 states have return successors, (5593), 5136 states have call predecessors, (5593), 5267 states have call successors, (5593) [2022-11-03 02:15:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17605 states to 17605 states and 24451 transitions. [2022-11-03 02:15:30,373 INFO L78 Accepts]: Start accepts. Automaton has 17605 states and 24451 transitions. Word has length 476 [2022-11-03 02:15:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:15:30,373 INFO L495 AbstractCegarLoop]: Abstraction has 17605 states and 24451 transitions. [2022-11-03 02:15:30,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 02:15:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 17605 states and 24451 transitions. [2022-11-03 02:15:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-03 02:15:30,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:30,449 INFO L195 NwaCegarLoop]: trace histogram [20, 15, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:30,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:15:30,449 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:30,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 449813256, now seen corresponding path program 1 times [2022-11-03 02:15:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:30,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935638575] [2022-11-03 02:15:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-03 02:15:33,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:33,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935638575] [2022-11-03 02:15:33,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935638575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:15:33,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:15:33,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:15:33,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283307049] [2022-11-03 02:15:33,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:15:33,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:15:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:15:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:15:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:15:33,800 INFO L87 Difference]: Start difference. First operand 17605 states and 24451 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-03 02:15:37,274 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 02:15:39,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:45,230 WARN L539 Checker$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 02:15:47,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:15:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:15:48,391 INFO L93 Difference]: Finished difference Result 41517 states and 57708 transitions. [2022-11-03 02:15:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:15:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 495 [2022-11-03 02:15:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:15:48,495 INFO L225 Difference]: With dead ends: 41517 [2022-11-03 02:15:48,495 INFO L226 Difference]: Without dead ends: 24366 [2022-11-03 02:15:48,541 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 02:15:48,542 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 2718 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:15:48,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 7002 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 611 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2022-11-03 02:15:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24366 states. [2022-11-03 02:15:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24366 to 24296. [2022-11-03 02:15:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24296 states, 14746 states have (on average 1.2804150278041502) internal successors, (18881), 15163 states have internal predecessors, (18881), 7207 states have call successors, (7207), 2416 states have call predecessors, (7207), 2342 states have return successors, (7643), 7026 states have call predecessors, (7643), 7205 states have call successors, (7643) [2022-11-03 02:15:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24296 states to 24296 states and 33731 transitions. [2022-11-03 02:15:50,202 INFO L78 Accepts]: Start accepts. Automaton has 24296 states and 33731 transitions. Word has length 495 [2022-11-03 02:15:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:15:50,203 INFO L495 AbstractCegarLoop]: Abstraction has 24296 states and 33731 transitions. [2022-11-03 02:15:50,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-03 02:15:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 24296 states and 33731 transitions. [2022-11-03 02:15:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-11-03 02:15:50,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:15:50,266 INFO L195 NwaCegarLoop]: trace histogram [20, 15, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:50,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:15:50,266 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:15:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:15:50,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1842138625, now seen corresponding path program 1 times [2022-11-03 02:15:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:15:50,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717060387] [2022-11-03 02:15:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:15:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:15:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2022-11-03 02:16:00,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717060387] [2022-11-03 02:16:00,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717060387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853372709] [2022-11-03 02:16:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:00,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:00,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:00,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:00,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:16:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:06,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 17446 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:16:06,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2022-11-03 02:16:07,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:16:07,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853372709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:07,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:16:07,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-03 02:16:07,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478526717] [2022-11-03 02:16:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:07,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:16:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:16:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:16:07,020 INFO L87 Difference]: Start difference. First operand 24296 states and 33731 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-03 02:16:09,701 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 02:16:15,794 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 02:16:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:16,629 INFO L93 Difference]: Finished difference Result 48153 states and 66937 transitions. [2022-11-03 02:16:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:16:16,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 513 [2022-11-03 02:16:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:16,719 INFO L225 Difference]: With dead ends: 48153 [2022-11-03 02:16:16,719 INFO L226 Difference]: Without dead ends: 24311 [2022-11-03 02:16:16,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:16:16,803 INFO L413 NwaCegarLoop]: 2832 mSDtfsCounter, 1 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:16,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5661 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 499 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 02:16:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24311 states. [2022-11-03 02:16:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24311 to 24301. [2022-11-03 02:16:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24301 states, 14751 states have (on average 1.2803199783065555) internal successors, (18886), 15168 states have internal predecessors, (18886), 7207 states have call successors, (7207), 2416 states have call predecessors, (7207), 2342 states have return successors, (7643), 7026 states have call predecessors, (7643), 7205 states have call successors, (7643) [2022-11-03 02:16:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24301 states to 24301 states and 33736 transitions. [2022-11-03 02:16:18,493 INFO L78 Accepts]: Start accepts. Automaton has 24301 states and 33736 transitions. Word has length 513 [2022-11-03 02:16:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:18,494 INFO L495 AbstractCegarLoop]: Abstraction has 24301 states and 33736 transitions. [2022-11-03 02:16:18,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-03 02:16:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 24301 states and 33736 transitions. [2022-11-03 02:16:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-11-03 02:16:18,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:18,583 INFO L195 NwaCegarLoop]: trace histogram [22, 15, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:18,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:16:18,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 02:16:18,799 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1485300515, now seen corresponding path program 1 times [2022-11-03 02:16:18,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:18,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538325257] [2022-11-03 02:16:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:18,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-03 02:16:26,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:26,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538325257] [2022-11-03 02:16:26,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538325257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:26,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675719924] [2022-11-03 02:16:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:26,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:26,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:26,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:26,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:16:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:33,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 17654 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:16:33,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 200 proven. 1 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2022-11-03 02:16:33,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:16:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2022-11-03 02:16:34,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675719924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:16:34,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [741465870] [2022-11-03 02:16:34,514 INFO L159 IcfgInterpreter]: Started Sifa with 305 locations of interest [2022-11-03 02:16:34,514 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:16:34,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:16:34,525 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:16:34,526 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:16:37,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 02:16:38,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 02:16:38,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 02:16:38,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 02:16:38,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 02:16:39,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 02:16:39,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 02:16:42,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:16:42,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:16:42,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 02:16:44,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:44,549 INFO L244 Elim1Store]: Index analysis took 162 ms [2022-11-03 02:16:44,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 65 select indices, 65 select index equivalence classes, 307 disjoint index pairs (out of 2080 index pairs), introduced 65 new quantified variables, introduced 0 case distinctions, treesize of input 510 treesize of output 196 [2022-11-03 02:16:48,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:16:48,814 INFO L244 Elim1Store]: Index analysis took 165 ms [2022-11-03 02:16:48,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 65 select indices, 65 select index equivalence classes, 307 disjoint index pairs (out of 2080 index pairs), introduced 65 new quantified variables, introduced 0 case distinctions, treesize of input 510 treesize of output 196 [2022-11-03 02:16:52,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:16:52,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:16:52,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:16:53,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:16:53,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:16:53,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:16:55,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:16:55,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:16:56,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:16:57,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:16:57,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:16:57,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:16,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:16,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:16,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:17:17,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:17,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:17:17,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:19,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:17:19,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:19,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:20,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:17:20,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:20,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:17:48,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:17:48,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:17:48,196 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:17:48,201 INFO L158 Benchmark]: Toolchain (without parser) took 328883.83ms. Allocated memory was 113.2MB in the beginning and 5.2GB in the end (delta: 5.1GB). Free memory was 82.0MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2022-11-03 02:17:48,201 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:17:48,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4259.86ms. Allocated memory was 113.2MB in the beginning and 270.5MB in the end (delta: 157.3MB). Free memory was 81.8MB in the beginning and 188.7MB in the end (delta: -106.9MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. [2022-11-03 02:17:48,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 371.52ms. Allocated memory is still 270.5MB. Free memory was 188.7MB in the beginning and 146.8MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-03 02:17:48,202 INFO L158 Benchmark]: Boogie Preprocessor took 514.00ms. Allocated memory is still 270.5MB. Free memory was 146.8MB in the beginning and 158.4MB in the end (delta: -11.6MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. [2022-11-03 02:17:48,202 INFO L158 Benchmark]: RCFGBuilder took 24686.03ms. Allocated memory was 270.5MB in the beginning and 945.8MB in the end (delta: 675.3MB). Free memory was 158.4MB in the beginning and 503.8MB in the end (delta: -345.5MB). Peak memory consumption was 498.7MB. Max. memory is 16.1GB. [2022-11-03 02:17:48,203 INFO L158 Benchmark]: TraceAbstraction took 299044.34ms. Allocated memory was 945.8MB in the beginning and 5.2GB in the end (delta: 4.2GB). Free memory was 502.8MB in the beginning and 3.7GB in the end (delta: -3.2GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2022-11-03 02:17:48,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4259.86ms. Allocated memory was 113.2MB in the beginning and 270.5MB in the end (delta: 157.3MB). Free memory was 81.8MB in the beginning and 188.7MB in the end (delta: -106.9MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 371.52ms. Allocated memory is still 270.5MB. Free memory was 188.7MB in the beginning and 146.8MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 514.00ms. Allocated memory is still 270.5MB. Free memory was 146.8MB in the beginning and 158.4MB in the end (delta: -11.6MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. * RCFGBuilder took 24686.03ms. Allocated memory was 270.5MB in the beginning and 945.8MB in the end (delta: 675.3MB). Free memory was 158.4MB in the beginning and 503.8MB in the end (delta: -345.5MB). Peak memory consumption was 498.7MB. Max. memory is 16.1GB. * TraceAbstraction took 299044.34ms. Allocated memory was 945.8MB in the beginning and 5.2GB in the end (delta: 4.2GB). Free memory was 502.8MB in the beginning and 3.7GB in the end (delta: -3.2GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:17:48,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/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 d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:17:50,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:17:50,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:17:50,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:17:50,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:17:50,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:17:50,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:17:50,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:17:50,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:17:50,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:17:50,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:17:50,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:17:50,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:17:50,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:17:50,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:17:50,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:17:50,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:17:50,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:17:50,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:17:50,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:17:50,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:17:50,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:17:50,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:17:50,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:17:50,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:17:50,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:17:50,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:17:50,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:17:50,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:17:50,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:17:50,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:17:50,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:17:50,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:17:50,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:17:50,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:17:50,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:17:51,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:17:51,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:17:51,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:17:51,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:17:51,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:17:51,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:17:51,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:17:51,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:17:51,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:17:51,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:17:51,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:17:51,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:17:51,055 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:17:51,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:17:51,056 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:17:51,056 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:17:51,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:17:51,058 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:17:51,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:17:51,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:17:51,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:17:51,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:17:51,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:17:51,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:17:51,061 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:17:51,061 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:17:51,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:17:51,062 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:17:51,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:17:51,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:17:51,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:17:51,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:17:51,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:17:51,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:17:51,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:17:51,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:17:51,064 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:17:51,065 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:17:51,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:17:51,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:17:51,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:17:51,066 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 [2022-11-03 02:17:51,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:17:51,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:17:51,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:17:51,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:17:51,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:17:51,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-03 02:17:51,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data/73a554f23/0ffabaa309924dffb0b46daaeac9c205/FLAG963aca1a5 [2022-11-03 02:17:52,611 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:17:52,612 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-03 02:17:52,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data/73a554f23/0ffabaa309924dffb0b46daaeac9c205/FLAG963aca1a5 [2022-11-03 02:17:53,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/data/73a554f23/0ffabaa309924dffb0b46daaeac9c205 [2022-11-03 02:17:53,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:17:53,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:17:53,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:17:53,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:17:53,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:17:53,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:53" (1/1) ... [2022-11-03 02:17:53,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d26440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:53, skipping insertion in model container [2022-11-03 02:17:53,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:17:53" (1/1) ... [2022-11-03 02:17:53,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:17:53,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:17:55,972 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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-03 02:17:56,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:56,283 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:17:56,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:17:56,808 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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-03 02:17:56,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:56,849 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:17:57,704 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_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2022-11-03 02:17:57,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:17:57,880 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:17:57,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57 WrapperNode [2022-11-03 02:17:57,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:17:57,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:17:57,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:17:57,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:17:57,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,292 INFO L138 Inliner]: procedures = 494, calls = 3867, calls flagged for inlining = 166, calls inlined = 158, statements flattened = 7084 [2022-11-03 02:17:58,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:17:58,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:17:58,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:17:58,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:17:58,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:17:58,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:17:58,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:17:58,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:17:58,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (1/1) ... [2022-11-03 02:17:58,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:17:58,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:17:58,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:17:58,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:17:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-03 02:17:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-03 02:17:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2022-11-03 02:17:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2022-11-03 02:17:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2022-11-03 02:17:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2022-11-03 02:17:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:17:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:17:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:17:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:17:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2022-11-03 02:17:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2022-11-03 02:17:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2022-11-03 02:17:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2022-11-03 02:17:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 02:17:58,860 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 02:17:58,860 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2022-11-03 02:17:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2022-11-03 02:17:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2022-11-03 02:17:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2022-11-03 02:17:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2022-11-03 02:17:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2022-11-03 02:17:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2022-11-03 02:17:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2022-11-03 02:17:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2022-11-03 02:17:58,862 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2022-11-03 02:17:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2022-11-03 02:17:58,862 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2022-11-03 02:17:58,862 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 02:17:58,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 02:17:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2022-11-03 02:17:58,863 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2022-11-03 02:17:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:17:58,863 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:17:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 02:17:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 02:17:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-03 02:17:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-03 02:17:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2022-11-03 02:17:58,865 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2022-11-03 02:17:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:17:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2022-11-03 02:17:58,865 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2022-11-03 02:17:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2022-11-03 02:17:58,865 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2022-11-03 02:17:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:17:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 02:17:58,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 02:17:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:17:58,868 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:17:58,868 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2022-11-03 02:17:58,869 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2022-11-03 02:17:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2022-11-03 02:17:58,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2022-11-03 02:17:58,869 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2022-11-03 02:17:58,869 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2022-11-03 02:17:58,870 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-03 02:17:58,870 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-03 02:17:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2022-11-03 02:17:58,874 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2022-11-03 02:17:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb [2022-11-03 02:17:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb [2022-11-03 02:17:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2022-11-03 02:17:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2022-11-03 02:17:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:17:58,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:17:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2022-11-03 02:17:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2022-11-03 02:17:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-03 02:17:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-03 02:17:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-11-03 02:17:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-11-03 02:17:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2022-11-03 02:17:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2022-11-03 02:17:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2022-11-03 02:17:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2022-11-03 02:17:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2022-11-03 02:17:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2022-11-03 02:17:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2022-11-03 02:17:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2022-11-03 02:17:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 02:17:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 02:17:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2022-11-03 02:17:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2022-11-03 02:17:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:17:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:17:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2022-11-03 02:17:58,879 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2022-11-03 02:17:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:17:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2022-11-03 02:17:58,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2022-11-03 02:17:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:17:58,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:17:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:17:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:17:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 02:17:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 02:17:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 02:17:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2022-11-03 02:17:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2022-11-03 02:17:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2022-11-03 02:17:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2022-11-03 02:17:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2022-11-03 02:17:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2022-11-03 02:17:58,881 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:17:58,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:17:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:17:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:17:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 02:17:58,882 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 02:17:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 02:17:58,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb [2022-11-03 02:17:58,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb [2022-11-03 02:17:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2022-11-03 02:17:58,883 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2022-11-03 02:17:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:17:58,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:17:58,883 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:17:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:17:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2022-11-03 02:17:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2022-11-03 02:17:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:17:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2022-11-03 02:17:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2022-11-03 02:17:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:17:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:17:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2022-11-03 02:17:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2022-11-03 02:17:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2022-11-03 02:17:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2022-11-03 02:17:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 02:17:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:17:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:17:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 02:17:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:17:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:17:58,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:17:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2022-11-03 02:17:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2022-11-03 02:17:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2022-11-03 02:17:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2022-11-03 02:17:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2022-11-03 02:17:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2022-11-03 02:17:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2022-11-03 02:17:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2022-11-03 02:17:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2022-11-03 02:17:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2022-11-03 02:17:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2022-11-03 02:17:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2022-11-03 02:17:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2022-11-03 02:17:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2022-11-03 02:17:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 02:17:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 02:17:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2022-11-03 02:17:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2022-11-03 02:17:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:17:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:17:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:17:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:17:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2022-11-03 02:17:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2022-11-03 02:17:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2022-11-03 02:17:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2022-11-03 02:17:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-03 02:17:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-03 02:17:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:17:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:17:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2022-11-03 02:17:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2022-11-03 02:17:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2022-11-03 02:17:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2022-11-03 02:17:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2022-11-03 02:17:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2022-11-03 02:17:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 02:17:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 02:17:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2022-11-03 02:17:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2022-11-03 02:17:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2022-11-03 02:17:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2022-11-03 02:17:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2022-11-03 02:17:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2022-11-03 02:17:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:17:58,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:17:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2022-11-03 02:17:58,893 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2022-11-03 02:17:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:17:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:17:58,893 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:17:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2022-11-03 02:17:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2022-11-03 02:17:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2022-11-03 02:17:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2022-11-03 02:17:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2022-11-03 02:17:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2022-11-03 02:17:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:17:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-03 02:17:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-03 02:17:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-03 02:17:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-03 02:17:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 02:17:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 02:17:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 02:17:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:17:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:17:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2022-11-03 02:17:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2022-11-03 02:17:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2022-11-03 02:17:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2022-11-03 02:17:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2022-11-03 02:17:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2022-11-03 02:17:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:17:58,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:17:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:17:58,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:17:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 02:17:58,897 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 02:17:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2022-11-03 02:17:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2022-11-03 02:17:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:17:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:17:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2022-11-03 02:17:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2022-11-03 02:17:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 02:17:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 02:17:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2022-11-03 02:17:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2022-11-03 02:17:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2022-11-03 02:17:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2022-11-03 02:17:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2022-11-03 02:17:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2022-11-03 02:17:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2022-11-03 02:17:58,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2022-11-03 02:17:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:17:58,900 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:17:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2022-11-03 02:17:58,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2022-11-03 02:17:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2022-11-03 02:17:58,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2022-11-03 02:17:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2022-11-03 02:17:58,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2022-11-03 02:17:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2022-11-03 02:17:58,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2022-11-03 02:17:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:17:58,901 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:17:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2022-11-03 02:17:58,902 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2022-11-03 02:17:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 02:17:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 02:17:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 02:17:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 02:17:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:17:58,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:17:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2022-11-03 02:17:58,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2022-11-03 02:17:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2022-11-03 02:17:58,903 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2022-11-03 02:17:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2022-11-03 02:17:58,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2022-11-03 02:17:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2022-11-03 02:17:58,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2022-11-03 02:17:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2022-11-03 02:17:58,904 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2022-11-03 02:17:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2022-11-03 02:17:58,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2022-11-03 02:17:58,904 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2022-11-03 02:17:58,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2022-11-03 02:17:58,905 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2022-11-03 02:17:58,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2022-11-03 02:17:58,905 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2022-11-03 02:17:58,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2022-11-03 02:17:58,905 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2022-11-03 02:17:58,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2022-11-03 02:17:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2022-11-03 02:17:58,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2022-11-03 02:17:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2022-11-03 02:17:58,906 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2022-11-03 02:17:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:17:58,906 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:17:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2022-11-03 02:17:58,906 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2022-11-03 02:17:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-03 02:17:58,907 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-03 02:17:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2022-11-03 02:17:58,907 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2022-11-03 02:17:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2022-11-03 02:17:58,907 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2022-11-03 02:17:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2022-11-03 02:17:58,908 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2022-11-03 02:17:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2022-11-03 02:17:58,908 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2022-11-03 02:17:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-03 02:17:58,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-03 02:17:58,908 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2022-11-03 02:17:58,908 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2022-11-03 02:17:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-03 02:17:58,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-03 02:18:00,328 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:18:00,336 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:18:01,568 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:20:00,539 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:20:00,565 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:20:00,566 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:20:00,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:00 BoogieIcfgContainer [2022-11-03 02:20:00,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:20:00,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:20:00,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:20:00,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:20:00,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:17:53" (1/3) ... [2022-11-03 02:20:00,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d1621a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:00, skipping insertion in model container [2022-11-03 02:20:00,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:17:57" (2/3) ... [2022-11-03 02:20:00,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d1621a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:00, skipping insertion in model container [2022-11-03 02:20:00,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:00" (3/3) ... [2022-11-03 02:20:00,580 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-03 02:20:00,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:20:00,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:20:00,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:20:00,788 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;@28cb9221, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:20:00,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:20:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 2542 states, 1707 states have (on average 1.328646748681898) internal successors, (2268), 1754 states have internal predecessors, (2268), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) [2022-11-03 02:20:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:20:00,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:00,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:00,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:00,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1765604170, now seen corresponding path program 1 times [2022-11-03 02:20:00,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:00,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625842247] [2022-11-03 02:20:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:00,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:00,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:00,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:00,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:20:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:02,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:20:02,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:02,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:02,190 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:02,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625842247] [2022-11-03 02:20:02,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625842247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:02,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:02,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:20:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751017411] [2022-11-03 02:20:02,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:02,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:20:02,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:20:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:20:02,234 INFO L87 Difference]: Start difference. First operand has 2542 states, 1707 states have (on average 1.328646748681898) internal successors, (2268), 1754 states have internal predecessors, (2268), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:02,470 INFO L93 Difference]: Finished difference Result 5079 states and 7591 transitions. [2022-11-03 02:20:02,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:20:02,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-03 02:20:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:02,500 INFO L225 Difference]: With dead ends: 5079 [2022-11-03 02:20:02,501 INFO L226 Difference]: Without dead ends: 2529 [2022-11-03 02:20:02,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:20:02,526 INFO L413 NwaCegarLoop]: 3650 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:02,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3650 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:20:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2022-11-03 02:20:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2529. [2022-11-03 02:20:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 1702 states have (on average 1.3243243243243243) internal successors, (2254), 1741 states have internal predecessors, (2254), 695 states have call successors, (695), 132 states have call predecessors, (695), 131 states have return successors, (684), 680 states have call predecessors, (684), 684 states have call successors, (684) [2022-11-03 02:20:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 3633 transitions. [2022-11-03 02:20:02,741 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 3633 transitions. Word has length 35 [2022-11-03 02:20:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:02,742 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 3633 transitions. [2022-11-03 02:20:02,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 3633 transitions. [2022-11-03 02:20:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:20:02,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:02,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:02,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:02,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:02,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1899617676, now seen corresponding path program 1 times [2022-11-03 02:20:02,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:02,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667347677] [2022-11-03 02:20:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:02,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:02,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:02,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:03,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:20:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:04,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:04,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:04,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:04,503 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:04,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667347677] [2022-11-03 02:20:04,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667347677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:04,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:04,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:04,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947717608] [2022-11-03 02:20:04,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:04,507 INFO L87 Difference]: Start difference. First operand 2529 states and 3633 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:05,233 INFO L93 Difference]: Finished difference Result 7515 states and 10870 transitions. [2022-11-03 02:20:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-03 02:20:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:05,267 INFO L225 Difference]: With dead ends: 7515 [2022-11-03 02:20:05,267 INFO L226 Difference]: Without dead ends: 4994 [2022-11-03 02:20:05,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:05,285 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 3540 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3540 SdHoareTripleChecker+Valid, 7968 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:05,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3540 Valid, 7968 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4994 states. [2022-11-03 02:20:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4994 to 4972. [2022-11-03 02:20:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4972 states, 3348 states have (on average 1.3255675029868579) internal successors, (4438), 3420 states have internal predecessors, (4438), 1366 states have call successors, (1366), 263 states have call predecessors, (1366), 257 states have return successors, (1380), 1338 states have call predecessors, (1380), 1355 states have call successors, (1380) [2022-11-03 02:20:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 7184 transitions. [2022-11-03 02:20:05,628 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 7184 transitions. Word has length 35 [2022-11-03 02:20:05,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:05,629 INFO L495 AbstractCegarLoop]: Abstraction has 4972 states and 7184 transitions. [2022-11-03 02:20:05,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 7184 transitions. [2022-11-03 02:20:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 02:20:05,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:05,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:05,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:05,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:05,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:05,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2138293771, now seen corresponding path program 1 times [2022-11-03 02:20:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:05,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739938069] [2022-11-03 02:20:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:05,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:05,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:05,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:20:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:06,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:06,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:07,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:07,245 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:07,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739938069] [2022-11-03 02:20:07,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739938069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:07,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:07,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847885017] [2022-11-03 02:20:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:07,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:07,247 INFO L87 Difference]: Start difference. First operand 4972 states and 7184 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:08,091 INFO L93 Difference]: Finished difference Result 12447 states and 18110 transitions. [2022-11-03 02:20:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-03 02:20:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:08,150 INFO L225 Difference]: With dead ends: 12447 [2022-11-03 02:20:08,151 INFO L226 Difference]: Without dead ends: 7483 [2022-11-03 02:20:08,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:08,185 INFO L413 NwaCegarLoop]: 4343 mSDtfsCounter, 3608 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 7994 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:08,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3608 Valid, 7994 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7483 states. [2022-11-03 02:20:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7483 to 7461. [2022-11-03 02:20:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7461 states, 5027 states have (on average 1.324447980903123) internal successors, (6658), 5128 states have internal predecessors, (6658), 2045 states have call successors, (2045), 394 states have call predecessors, (2045), 388 states have return successors, (2122), 2013 states have call predecessors, (2122), 2034 states have call successors, (2122) [2022-11-03 02:20:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 10825 transitions. [2022-11-03 02:20:08,747 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 10825 transitions. Word has length 36 [2022-11-03 02:20:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:08,748 INFO L495 AbstractCegarLoop]: Abstraction has 7461 states and 10825 transitions. [2022-11-03 02:20:08,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 10825 transitions. [2022-11-03 02:20:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 02:20:08,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:08,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:08,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:08,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:08,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:08,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2064385685, now seen corresponding path program 1 times [2022-11-03 02:20:08,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:08,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094264196] [2022-11-03 02:20:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:08,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:08,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:09,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:20:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:10,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:10,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:10,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:10,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094264196] [2022-11-03 02:20:10,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094264196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:10,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:10,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:10,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129944982] [2022-11-03 02:20:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:10,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:10,432 INFO L87 Difference]: Start difference. First operand 7461 states and 10825 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:11,321 INFO L93 Difference]: Finished difference Result 17422 states and 25485 transitions. [2022-11-03 02:20:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:11,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-03 02:20:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:11,398 INFO L225 Difference]: With dead ends: 17422 [2022-11-03 02:20:11,398 INFO L226 Difference]: Without dead ends: 9969 [2022-11-03 02:20:11,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:11,446 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 3609 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 7961 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:11,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3609 Valid, 7961 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2022-11-03 02:20:12,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9947. [2022-11-03 02:20:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9947 states, 6705 states have (on average 1.3237882177479492) internal successors, (8876), 6835 states have internal predecessors, (8876), 2722 states have call successors, (2722), 525 states have call predecessors, (2722), 519 states have return successors, (2887), 2686 states have call predecessors, (2887), 2711 states have call successors, (2887) [2022-11-03 02:20:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9947 states to 9947 states and 14485 transitions. [2022-11-03 02:20:12,165 INFO L78 Accepts]: Start accepts. Automaton has 9947 states and 14485 transitions. Word has length 37 [2022-11-03 02:20:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:12,166 INFO L495 AbstractCegarLoop]: Abstraction has 9947 states and 14485 transitions. [2022-11-03 02:20:12,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 9947 states and 14485 transitions. [2022-11-03 02:20:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 02:20:12,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:12,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:12,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:12,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:12,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash 267621922, now seen corresponding path program 1 times [2022-11-03 02:20:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:12,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218453525] [2022-11-03 02:20:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:12,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:12,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:12,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:12,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:20:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:13,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:13,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:13,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:13,935 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:13,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218453525] [2022-11-03 02:20:13,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218453525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:13,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:13,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:13,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097894993] [2022-11-03 02:20:13,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:13,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:13,937 INFO L87 Difference]: Start difference. First operand 9947 states and 14485 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:14,932 INFO L93 Difference]: Finished difference Result 22272 states and 32683 transitions. [2022-11-03 02:20:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-03 02:20:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:15,020 INFO L225 Difference]: With dead ends: 22272 [2022-11-03 02:20:15,020 INFO L226 Difference]: Without dead ends: 12333 [2022-11-03 02:20:15,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:15,069 INFO L413 NwaCegarLoop]: 4309 mSDtfsCounter, 3610 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3610 SdHoareTripleChecker+Valid, 7960 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:15,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3610 Valid, 7960 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12333 states. [2022-11-03 02:20:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12333 to 12311. [2022-11-03 02:20:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12311 states, 8301 states have (on average 1.3232140705939044) internal successors, (10984), 8457 states have internal predecessors, (10984), 3361 states have call successors, (3361), 654 states have call predecessors, (3361), 648 states have return successors, (3583), 3322 states have call predecessors, (3583), 3350 states have call successors, (3583) [2022-11-03 02:20:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 17928 transitions. [2022-11-03 02:20:16,063 INFO L78 Accepts]: Start accepts. Automaton has 12311 states and 17928 transitions. Word has length 38 [2022-11-03 02:20:16,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:16,064 INFO L495 AbstractCegarLoop]: Abstraction has 12311 states and 17928 transitions. [2022-11-03 02:20:16,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 12311 states and 17928 transitions. [2022-11-03 02:20:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 02:20:16,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:16,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:16,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-03 02:20:16,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:16,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash 98713607, now seen corresponding path program 1 times [2022-11-03 02:20:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:16,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644656993] [2022-11-03 02:20:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:16,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:16,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:16,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:16,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:20:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:17,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:17,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:17,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:17,718 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:17,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644656993] [2022-11-03 02:20:17,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644656993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:17,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:17,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98489274] [2022-11-03 02:20:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:17,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:17,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:17,720 INFO L87 Difference]: Start difference. First operand 12311 states and 17928 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:19,424 INFO L93 Difference]: Finished difference Result 36838 states and 53658 transitions. [2022-11-03 02:20:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:19,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-03 02:20:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:19,631 INFO L225 Difference]: With dead ends: 36838 [2022-11-03 02:20:19,631 INFO L226 Difference]: Without dead ends: 24535 [2022-11-03 02:20:19,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:19,683 INFO L413 NwaCegarLoop]: 4564 mSDtfsCounter, 3591 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 8171 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:19,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3591 Valid, 8171 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:20:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24535 states. [2022-11-03 02:20:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24535 to 24527. [2022-11-03 02:20:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24527 states, 16530 states have (on average 1.3225650332728374) internal successors, (21862), 16832 states have internal predecessors, (21862), 6700 states have call successors, (6700), 1307 states have call predecessors, (6700), 1296 states have return successors, (7155), 6633 states have call predecessors, (7155), 6689 states have call successors, (7155) [2022-11-03 02:20:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24527 states to 24527 states and 35717 transitions. [2022-11-03 02:20:21,970 INFO L78 Accepts]: Start accepts. Automaton has 24527 states and 35717 transitions. Word has length 36 [2022-11-03 02:20:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:21,971 INFO L495 AbstractCegarLoop]: Abstraction has 24527 states and 35717 transitions. [2022-11-03 02:20:21,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 24527 states and 35717 transitions. [2022-11-03 02:20:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 02:20:21,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:21,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:21,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-03 02:20:22,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:22,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1619670549, now seen corresponding path program 1 times [2022-11-03 02:20:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:22,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763454192] [2022-11-03 02:20:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:22,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:22,191 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:22,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:20:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:23,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:23,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:23,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:23,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:23,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763454192] [2022-11-03 02:20:23,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763454192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:23,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:23,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:23,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081125400] [2022-11-03 02:20:23,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:23,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:23,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:23,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:23,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:23,509 INFO L87 Difference]: Start difference. First operand 24527 states and 35717 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:24,961 INFO L93 Difference]: Finished difference Result 49026 states and 71375 transitions. [2022-11-03 02:20:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:24,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-03 02:20:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:25,104 INFO L225 Difference]: With dead ends: 49026 [2022-11-03 02:20:25,105 INFO L226 Difference]: Without dead ends: 24507 [2022-11-03 02:20:25,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:25,205 INFO L413 NwaCegarLoop]: 3628 mSDtfsCounter, 3618 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:25,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3618 Valid, 3628 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:25,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24507 states. [2022-11-03 02:20:27,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24507 to 24507. [2022-11-03 02:20:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24507 states, 16520 states have (on average 1.3221549636803873) internal successors, (21842), 16822 states have internal predecessors, (21842), 6690 states have call successors, (6690), 1307 states have call predecessors, (6690), 1296 states have return successors, (7125), 6623 states have call predecessors, (7125), 6679 states have call successors, (7125) [2022-11-03 02:20:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24507 states to 24507 states and 35657 transitions. [2022-11-03 02:20:27,706 INFO L78 Accepts]: Start accepts. Automaton has 24507 states and 35657 transitions. Word has length 38 [2022-11-03 02:20:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:27,709 INFO L495 AbstractCegarLoop]: Abstraction has 24507 states and 35657 transitions. [2022-11-03 02:20:27,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 24507 states and 35657 transitions. [2022-11-03 02:20:27,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 02:20:27,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:27,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:27,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:27,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:27,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:27,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 131108824, now seen corresponding path program 1 times [2022-11-03 02:20:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:27,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510386520] [2022-11-03 02:20:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:27,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:27,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:27,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:27,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:20:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:29,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:29,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:29,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:29,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:29,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510386520] [2022-11-03 02:20:29,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510386520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:29,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:29,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261729333] [2022-11-03 02:20:29,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:29,496 INFO L87 Difference]: Start difference. First operand 24507 states and 35657 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:30,961 INFO L93 Difference]: Finished difference Result 48986 states and 71255 transitions. [2022-11-03 02:20:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:30,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-03 02:20:30,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:31,096 INFO L225 Difference]: With dead ends: 48986 [2022-11-03 02:20:31,096 INFO L226 Difference]: Without dead ends: 24487 [2022-11-03 02:20:31,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:31,210 INFO L413 NwaCegarLoop]: 3624 mSDtfsCounter, 3613 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:31,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3613 Valid, 3624 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24487 states. [2022-11-03 02:20:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24487 to 24487. [2022-11-03 02:20:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24487 states, 16510 states have (on average 1.3217443973349485) internal successors, (21822), 16812 states have internal predecessors, (21822), 6680 states have call successors, (6680), 1307 states have call predecessors, (6680), 1296 states have return successors, (7095), 6613 states have call predecessors, (7095), 6669 states have call successors, (7095) [2022-11-03 02:20:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24487 states to 24487 states and 35597 transitions. [2022-11-03 02:20:33,409 INFO L78 Accepts]: Start accepts. Automaton has 24487 states and 35597 transitions. Word has length 39 [2022-11-03 02:20:33,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:33,409 INFO L495 AbstractCegarLoop]: Abstraction has 24487 states and 35597 transitions. [2022-11-03 02:20:33,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:33,410 INFO L276 IsEmpty]: Start isEmpty. Operand 24487 states and 35597 transitions. [2022-11-03 02:20:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 02:20:33,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:33,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:33,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:33,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:33,626 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:33,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1163074537, now seen corresponding path program 1 times [2022-11-03 02:20:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:33,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598351717] [2022-11-03 02:20:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:33,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:33,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:33,631 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:33,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:20:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:35,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:35,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:35,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:35,401 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:35,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598351717] [2022-11-03 02:20:35,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598351717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:35,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:35,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:35,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049175894] [2022-11-03 02:20:35,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:35,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:35,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:35,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:35,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:35,403 INFO L87 Difference]: Start difference. First operand 24487 states and 35597 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:20:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:38,401 INFO L93 Difference]: Finished difference Result 66377 states and 96024 transitions. [2022-11-03 02:20:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:38,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-03 02:20:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:38,592 INFO L225 Difference]: With dead ends: 66377 [2022-11-03 02:20:38,592 INFO L226 Difference]: Without dead ends: 41898 [2022-11-03 02:20:38,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:38,687 INFO L413 NwaCegarLoop]: 5069 mSDtfsCounter, 2567 mSDsluCounter, 3601 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 8670 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:38,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 8670 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:20:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41898 states. [2022-11-03 02:20:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41898 to 41873. [2022-11-03 02:20:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41873 states, 28223 states have (on average 1.3192431704638061) internal successors, (37233), 28735 states have internal predecessors, (37233), 11275 states have call successors, (11275), 2395 states have call predecessors, (11275), 2374 states have return successors, (11890), 11154 states have call predecessors, (11890), 11264 states have call successors, (11890) [2022-11-03 02:20:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41873 states to 41873 states and 60398 transitions. [2022-11-03 02:20:42,199 INFO L78 Accepts]: Start accepts. Automaton has 41873 states and 60398 transitions. Word has length 41 [2022-11-03 02:20:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:42,199 INFO L495 AbstractCegarLoop]: Abstraction has 41873 states and 60398 transitions. [2022-11-03 02:20:42,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:20:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 41873 states and 60398 transitions. [2022-11-03 02:20:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:20:42,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:42,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:42,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:42,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:42,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1958220894, now seen corresponding path program 1 times [2022-11-03 02:20:42,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:42,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354745068] [2022-11-03 02:20:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:42,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:42,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:42,422 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:42,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:20:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:43,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:43,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:43,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:43,906 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:43,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354745068] [2022-11-03 02:20:43,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354745068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:43,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:43,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:43,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334204452] [2022-11-03 02:20:43,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:43,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:43,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:43,909 INFO L87 Difference]: Start difference. First operand 41873 states and 60398 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:46,755 INFO L93 Difference]: Finished difference Result 83698 states and 120687 transitions. [2022-11-03 02:20:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:46,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-03 02:20:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:46,933 INFO L225 Difference]: With dead ends: 83698 [2022-11-03 02:20:46,934 INFO L226 Difference]: Without dead ends: 41833 [2022-11-03 02:20:47,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:47,260 INFO L413 NwaCegarLoop]: 3620 mSDtfsCounter, 3608 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:47,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3608 Valid, 3620 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41833 states. [2022-11-03 02:20:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41833 to 41833. [2022-11-03 02:20:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41833 states, 28203 states have (on average 1.3187604155586286) internal successors, (37193), 28715 states have internal predecessors, (37193), 11255 states have call successors, (11255), 2395 states have call predecessors, (11255), 2374 states have return successors, (11830), 11134 states have call predecessors, (11830), 11244 states have call successors, (11830) [2022-11-03 02:20:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41833 states to 41833 states and 60278 transitions. [2022-11-03 02:20:50,248 INFO L78 Accepts]: Start accepts. Automaton has 41833 states and 60278 transitions. Word has length 40 [2022-11-03 02:20:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:50,249 INFO L495 AbstractCegarLoop]: Abstraction has 41833 states and 60278 transitions. [2022-11-03 02:20:50,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:20:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 41833 states and 60278 transitions. [2022-11-03 02:20:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 02:20:50,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:50,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:50,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:20:50,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:20:50,450 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:50,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1463119151, now seen corresponding path program 1 times [2022-11-03 02:20:50,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:20:50,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352385868] [2022-11-03 02:20:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:50,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:20:50,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:20:50,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:20:50,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37374ac0-7fa2-4bb4-80b2-a64f5b9f1137/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:20:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:51,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:20:51,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:20:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:51,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:20:51,881 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:20:51,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352385868] [2022-11-03 02:20:51,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352385868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:51,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:51,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:51,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394736879] [2022-11-03 02:20:51,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:51,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:51,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:20:51,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:51,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:51,884 INFO L87 Difference]: Start difference. First operand 41833 states and 60278 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)